Bring over AABB bht work (model + validation + healer tests) from cf200f0

.metadata/.plugins/org.eclipse.core.resources/.history/9a/30233d5b506d0010133f8119b8e960f2

+package de.hft.stuttgart.citydoctor2.healer.aabb.bht;
+
+import java.util.*;
+
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing.LinearRingType;
+
+
+
+public class TestHouseAABB {
+
+	private static ConcretePolygon createTrianglePolygon(Point p1, Point p2, Point p3) {
+	    ConcretePolygon poly = new ConcretePolygon();
+	    LinearRing ring = new LinearRing(LinearRingType.EXTERIOR);
+	    ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ())); // Ring schließen
+	    poly.setExteriorRing(ring);
+	    return poly;
+	}
+
+	private static ConcretePolygon createQuadPolygon(Point p1, Point p2, Point p3, Point p4) {
+	    ConcretePolygon poly = new ConcretePolygon();
+	    LinearRing ring = new LinearRing(LinearRingType.EXTERIOR);
+	    ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ())); // Ring schließen
+	    poly.setExteriorRing(ring);
+	    return poly;
+	}
+
+}

.metadata/.plugins/org.eclipse.core.resources/.history/9a/70c98d9652e900101245d5e14ea95888

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+
+import de.hft.stuttgart.citydoctor2.datastructure.bht.*;
+import de.hft.stuttgart.citydoctor2.datastructure.*;
+import de.hft.stuttgart.citydoctor2.parser.*;
+import de.hft.stuttgart.citydoctor2.systemtest.TestUtil;
+import de.hft.stuttgart.citydoctor2.check.*;
+
+//import de.hft.stuttgart.citydoctor2.healing.*;
+
+import java.io.IOException;
+import java.util.*;
+
+//src/test/java/.../TestCityGmlAABB.java
+import java.net.URL;
+import java.nio.file.Paths;
+
+
+public class TestCityGmlAABB {
+
+    public static void main(String[] args) throws CityGmlParseException, IOException, InvalidGmlFileException {
+        
+    	
+    	
+    	
+    	System.out.println("=== CityGML AABB Test ===");
+
+        // --- 1) Ask user which test case to run ---
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter TestCase ID (e.g. PO_TWO_INNERS, SO_WRONG_POLY_ORIENTATION_SINGLE) "
+                + "or press Enter for default: ");
+                String id = sc.nextLine().trim();
+        
+                
+	     // Default wählen 
+	     String resourcePath = TestPaths.PO_TWO_INNERS;
+	
+	     if (!id.isEmpty()) {
+	         try {
+	             // Holt  TestPaths per Reflection
+	             resourcePath = (String) TestPaths.class.getField(id).get(null);
+	         } catch (ReflectiveOperationException ex) {
+	             System.out.println("Unknown testcase: " + id + " (using default)");
+	         }
+	     }
+     
+
+
+	     String filePathForParser = resolveResourceOnClasspath(resourcePath);
+	     System.out.println("Using file: " + filePathForParser);
+	
+	 
+        
+     // --- 2) Load CityGML model ---
+	    ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
+	    // TODO: Study class model
+	    CityDoctorModel model = TestUtil.loadCityModel(filePathForParser, config);
+        System.out.println("Model loaded successfully.\n");
+
+        List<Building> buildings = model.getBuildings();
+
+     // --- 3) Menu: choose granularity ---
+        System.out.println("\nChoose granularity:");
+        System.out.println("  1) Polygon-level (broad-phase)");
+        System.out.println("  2) Ring-level (EXTERIOR)");
+        System.out.println("  3) Ring-level (INTERIOR)");
+        System.out.println("  4) Vertex-level (fine-phase)");
+        System.out.println("  5) All of the above");
+        System.out.print("Your choice [1-5]: ");
+        int choice = readChoice(sc, 1, 5);
+
+        boolean doPolygon = (choice == 1 || choice == 5);
+        boolean doExtRing = (choice == 2 || choice == 5);
+        boolean doIntRing = (choice == 3 || choice == 5);
+        boolean doVertex  = (choice == 4 || choice == 5);
+
+        // --- 4) Run the selected modes ---
+        if (doPolygon) runPolygonMode(buildings);
+        if (doExtRing) runRingMode(buildings, true);
+        if (doIntRing) runRingMode(buildings, false);
+        if (doVertex)  runVertexMode(buildings);
+
+        System.out.println("\n=== Done ===");
+    }
+
+    // ---------- Modes ----------
+
+    private static void runPolygonMode(List<Building> buildings) {
+        System.out.println("\n> Polygon-level AABB (broad-phase)");
+        Set<ConcretePolygon> polys = collectAllPolygons(buildings);
+
+        AABBTree<ConcretePolygon> bvh = new AABBTree<>(
+            new ArrayList<>(polys),
+            AABBUtils::getAABB
+        );
+
+        System.out.println("Polygons: " + polys.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runRingMode(List<Building> buildings, boolean exterior) {
+        String label = exterior ? "EXTERIOR" : "INTERIOR";
+        System.out.println("\n> Ring-level AABB (" + label + ")");
+
+        Set<LinearRing> rings = exterior
+                ? collectExteriorRings(buildings)
+                : collectInteriorRings(buildings);
+
+        AABBTree<LinearRing> bvh = new AABBTree<>(
+            new ArrayList<>(rings),
+            AABBUtils::computeAABBFromRing
+        );
+
+        System.out.println(label + " rings: " + rings.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runVertexMode(List<Building> buildings) {
+        System.out.println("\n> Vertex-level AABB (fine-phase)");
+        Set<Vertex> verts = collectAllVertices(buildings);
+
+        AABBTree<Vertex> bvh = new AABBTree<>(
+            new ArrayList<>(verts),
+            AABBUtils::computeAABBFromVertex
+        );
+
+        System.out.println("Vertices: " + verts.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    // ---------- Collectors ----------
+
+    /** Collects all ConcretePolygons (unique) via visitor. */
+    private static Set<ConcretePolygon> collectAllPolygons(List<Building> buildings) {
+        Set<ConcretePolygon> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    set.add(poly.getOriginal());
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all EXTERIOR rings (unique). */
+    private static Set<LinearRing> collectExteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    LinearRing ext = poly.getOriginal().getExteriorRing();
+                    if (ext != null) set.add(ext);
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all INTERIOR rings (unique). */
+    private static Set<LinearRing> collectInteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    List<LinearRing> inner = poly.getOriginal().getInnerRings();
+                    if (inner != null && !inner.isEmpty()) {
+                        set.addAll(inner);
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all vertices (unique) from both exterior and interior rings. */
+    private static Set<Vertex> collectAllVertices(List<Building> buildings) {
+        Set<Vertex> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    ConcretePolygon cp = poly.getOriginal();
+                    LinearRing ext = cp.getExteriorRing();
+                    if (ext != null) set.addAll(ext.getVertices());
+                    List<LinearRing> inner = cp.getInnerRings();
+                    if (inner != null) {
+                        for (LinearRing lr : inner) set.addAll(lr.getVertices());
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    // ---------- Utils ----------    
+    /* Helper method reads choice of the user */
+    private static int readChoice(Scanner sc, int min, int max) {
+        while (true) {
+            String s = sc.nextLine().trim();
+            try {
+                int v = Integer.parseInt(s);
+                if (v >= min && v <= max) return v;
+            } catch (NumberFormatException ignored) {}
+            System.out.print("Please enter a number between " + min + " and " + max + ": ");
+        }
+    }
+    
+ /* Helper method Pathfinder */
+    private static String resolveResourceOnClasspath(String resourcePath) {
+        String rp = normalizeResourcePath(resourcePath);
+
+        // 1) Klassenpfad via Class.getResource
+        URL url = TestCityGmlAABB.class.getResource(rp);
+
+        // 2) Klassenpfad via Context-ClassLoader: 
+        if (url == null) {
+            ClassLoader cl = Thread.currentThread().getContextClassLoader();
+            String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+            url = cl.getResource(noSlash);
+        }
+
+        // 3) Wenn gefunden: in Pfad umwandeln
+        if (url != null) {
+            try {
+                return Paths.get(url.toURI()).toString();
+            } catch (Exception e) {
+                throw new RuntimeException("Konnte Resource-URI nicht auflösen: " + url, e);
+            }
+        }
+
+        // 4) Fallbacks: Projekt-relative Kandidaten prüfen
+        String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+        String[] candidates = {
+            "src/test/resources/" + noSlash,
+            "src/main/resources/" + noSlash,
+            resourcePath // falls bereits ein echter Dateipfad übergeben wurde
+        };
+        for (String cand : candidates) {
+            java.nio.file.Path p = java.nio.file.Paths.get(cand);
+            if (java.nio.file.Files.exists(p)) {
+                return p.toAbsolutePath().toString();
+            }
+        }
+
+        throw new IllegalArgumentException(
+            "Resource nicht im Klassenpfad gefunden: " + resourcePath + " (versucht als: " + rp + ")"
+        );
+    }
+
+    // FÜR ALLE FÄLLE zur Zeit REDUNDAD
+    private static String normalizeResourcePath(String path) { 
+        String p = path.replace('\\', '/');
+        // Quellordner-Präfixe entfernen, falls mit übergeben
+        if (p.startsWith("src/test/resources/")) {
+            p = p.substring("src/test/resources/".length());
+        } else if (p.startsWith("src/main/resources/")) {
+            p = p.substring("src/main/resources/".length());
+        }
+        // Für Class.getResource: führenden Slash setzen
+        if (!p.startsWith("/")) p = "/" + p;
+        return p;
+    }
+
+}
+
+
+

.metadata/.plugins/org.eclipse.core.resources/.history/a/507e361753e900101245d5e14ea95888

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+
+
+/**
+ * Central collection of CityGML test file paths used for AABB / healing experiments.
+ * Files are located under {@code src/test/resources} or {@code src/test/resources/bht/}
+ * ACHTUNG: mit '!!!' markierte Objekte haben einen falschen Pfad
+ */
+public final class TestPaths {
+
+    private TestPaths() {
+        // utility class
+    }
+
+    // ==================================================
+    // Schematron / Validation tests
+    // ==================================================
+
+    /**!!! Not XSD valid, namespaces removed, for schematron experiments. */
+    public static final String SCHEMATRON =
+    		"CityDoctorParent/CityDoctorValidation/target/test-classes/SimpleSolid_SrefBS-Schematron-Test.gml";
+             //CityDoctorParent
+            //"src/test/resources/bht/SimpleSolid_SrefBS-Schematron-Test.gml";
+
+
+    // ==================================================
+    // LinearRing (LR) test cases
+    // ==================================================
+
+    /**1 LinearRing has only 2 points. */
+    public static final String LR_2POINTS =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0001-T0001.gml";
+    
+    /**2 LinearRing has 3 points but is not closed. */
+    public static final String LR_NOTCLOSED =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0001-T0002.gml";
+
+    /**3 LinearRing has consecutive duplicate vertices. */
+    public static final String LR_DUPLICATE_CONSEC =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0002-T0001.gml";
+
+    /**4 LinearRing has non-consecutive duplicate vertices. */
+    public static final String LR_DUPLICATE_NONCONSEC =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0002-T0002.gml";
+
+    /**added 5 LinearRing points form a straight line. */
+    public static final String LR_LINE =
+        "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0003.gml";
+
+    /**added 6 LinearRing has consecutive points closer than 0.1. */
+    public static final String LR_TOO_CLOSE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0004.gml";
+
+    /**added 7 LinearRing has too few points and duplicate points. */
+    public static final String LR_TOO_FEW_DUP =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0005.gml";
+
+    /**8 LinearRing is not closed. */
+    public static final String LR_NOTCLOSED_2 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0003-T0001.gml";
+
+    /**added 9 LinearRing is closed but with point distance < 0.1. */
+    public static final String LR_CLOSED_SMALLDIST =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0003-T0002.gml";
+
+    /**10 LinearRing has a loop. */
+    public static final String LR_LOOP =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0004-T0004.gml";
+
+    /** 11 LinearRing point touches edge with distance < 0.1. */
+    public static final String LR_TOUCH_EDGE =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0004-T0005.gml";
+
+
+    // ==================================================
+    // Polygon (PO) test cases
+    // ==================================================
+
+    /**12 Inner ring intersects outer ring. */
+    public static final String PO_INTERSECT_OUTER =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0001.gml";
+
+    /**13 Polygon has 2 inner rings. */
+    public static final String PO_TWO_INNERS =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0002.gml";
+
+    /**14 Polygon has 2 intersecting inner rings. */
+    public static final String PO_INNER_INTERSECT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0003.gml";
+
+    /**15 Polygon has 2 inner rings; one vertex too far from the plane. */
+    public static final String PO_INNER_OFF_PLANE =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-PO-0002-T0001.gml";
+
+    /**added 16 Polygon has normal deviation error. */
+    public static final String PO_NORMAL_ERROR =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0002-T0002.gml";
+
+    /**17 Polygon has disconnected interior surface. */
+    public static final String PO_DISCONNECTED_INTERIOR_1 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0003-T0001.gml";
+
+    /**added 18 Polygon has disconnected interior surface due to two inner rings. */
+    public static final String PO_DISCONNECTED_INTERIOR_2 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0003-T0002.gml";
+
+    /** added 19 Inner ring completely outside the outer ring. */
+    public static final String PO_INNER_OUTSIDE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0004-T0001.gml";
+
+    /**added 20 Inner ring completely inside another inner ring. */
+    public static final String PO_INNER_INSIDE_ANOTHER =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0005-T0001.gml";
+
+    /**21 Two inner rings with wrong orientation. */
+    public static final String PO_TWO_INNERS_WRONG_ORIENT =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-PO-0006-T0001.gml";
+
+
+    // ==================================================
+    // Solid (SO) test cases
+    // ==================================================
+
+    /**added 22 Solid consists of only 3 polygons. */
+    public static final String SO_TOO_FEW_POLYGONS =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0001-T0001.gml";
+
+    /**added 23 Shell is not watertight. */
+    public static final String SO_NOT_WATERTIGHT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0002-T0001.gml";
+    /** 24 Two buildings connected only by a single point. */
+    public static final String SO_CONNECTED_BY_POINT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0003-T0001.gml";
+
+    /**25 Roof point slightly deviates (e.g., 10.0 14.95 2.95 vs 10.0 15.0 3.0). */
+    public static final String SO_ROOF_COORD_DEVIATION_1 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0004-T0001.gml";
+
+    /**25 Missing polygon. */
+    public static final String SO_MISSING_POLYGON =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0004-T0002.gml";
+
+    /*
+     * 
+     * komplex Data from NRW; whole Quartier
+     * */
+        /** 26added EXTRA Whole Church forum. */
+        public static final String CHURCH_FORUM =
+                "src/test/resources/bht/LoD2_32_344_5675_1_NW.gml";
+
+    /* LOST DATA 
+    /**   Slight coordinate deviations on multiple roof polygons (CityGML 2.0 only). 
+    public static final String SO_ROOF_COORD_DEVIATION_2 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0004-T0003.gml";
+     */
+    /**added 27 Solid geometry actually contains two buildings. */
+    public static final String SO_TWO_BUILDINGS_IN_ONE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0005-T0001.gml";
+
+    
+    // 
+    // Falsches Datei !!!!    
+    /**!!! 28 Self-intersecting geometry.  */
+    public static final String SO_SELF_INTERSECTING =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0003-T0001.gml";
+
+    // ACHTUNG FALSCHES LABEL 
+    /**29 Polygon with wrong orientation.  */
+    public static final String ENTER_LABEL1 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0001.gml";
+
+    /**30 Polygon with wrong orientation. ACHTUNG FALSCHES LABEL */
+    public static final String ENTER_LABEL2 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0002.gml";
+
+    /**31 Polygon with wrong orientation. ACHTUNG FALSCHES LABEL */
+    public static final String ENTER_LABEL3 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0003.gml";
+    //
+    
+    /** LOST! 33 All polygons have wrong orientation. */
+    public static final String SO_WRONG_POLY_ORIENTATION_ALL =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0008-T0001.gml";
+}

.metadata/.plugins/org.eclipse.core.resources/.history/a/50b5266078ea0010125ad88dcc4485e5

+/*-
+ *  Copyright 2020 Beuth Hochschule für Technik Berlin, Hochschule für Technik Stuttgart
+ * 
+ *  This file is part of CityDoctor2.
+ *
+ *  CityDoctor2 is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  CityDoctor2 is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with CityDoctor2.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package de.hft.stuttgart.citydoctor2.checks.bht;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import Jama.EigenvalueDecomposition;
+import de.hft.stuttgart.citydoctor2.check.Check;
+import de.hft.stuttgart.citydoctor2.check.CheckError;
+import de.hft.stuttgart.citydoctor2.check.CheckId;
+import de.hft.stuttgart.citydoctor2.check.CheckResult;
+import de.hft.stuttgart.citydoctor2.check.Requirement;
+import de.hft.stuttgart.citydoctor2.check.RequirementType;
+import de.hft.stuttgart.citydoctor2.check.ResultStatus;
+import de.hft.stuttgart.citydoctor2.check.error.DegeneratedRingError;
+import de.hft.stuttgart.citydoctor2.check.error.PointTouchesEdgeError;
+import de.hft.stuttgart.citydoctor2.check.error.RingEdgeIntersectionError;
+import de.hft.stuttgart.citydoctor2.checks.Checks;
+import de.hft.stuttgart.citydoctor2.checks.util.CollectionUtils;
+import de.hft.stuttgart.citydoctor2.datastructure.BoundingBox;
+import de.hft.stuttgart.citydoctor2.datastructure.Edge;
+import de.hft.stuttgart.citydoctor2.datastructure.Geometry;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.math.CovarianceMatrix;
+import de.hft.stuttgart.citydoctor2.math.DistanceResult;
+import de.hft.stuttgart.citydoctor2.math.Matrix3x3d;
+import de.hft.stuttgart.citydoctor2.math.OrthogonalRegressionPlane;
+import de.hft.stuttgart.citydoctor2.math.Segment3d;
+import de.hft.stuttgart.citydoctor2.math.Vector3d;
+import de.hft.stuttgart.citydoctor2.parser.ParserConfiguration;
+
+
+import de.hft.stuttgart.citydoctor2.datastructure.bht.AABB;
+
+
+/**
+ * Checks whether a ring self intersects. Also checks if a point is too close to
+ * an edge of the ring.
+ * 
+ * Axis Aligned Boundin Box Early-Out-Version of Matthias Betz's Check
+ * @author Baris Numanoglu
+ */
+public class RingSelfIntCheckAABB extends Check {
+
+	private static final String EPSILON_NAME = "minVertexDistance";
+
+	// check requirement class for default parameters
+	private double degeneratedRingTolerance = 0.01;
+	private double epsilon = Checks.MIN_VERTEX_DISTANCE_DEFAULT;
+
+	
+	private static final List<CheckId> dependencies;
+
+	static {
+		ArrayList<CheckId> deps = new ArrayList<>();
+		deps.add(CheckId.C_GE_R_TOO_FEW_POINTS);
+		deps.add(CheckId.C_GE_R_NOT_CLOSED);
+		deps.add(CheckId.C_GE_R_DUPLICATE_POINT);
+		dependencies = Collections.unmodifiableList(deps);
+	}
+
+	@Override
+	public void init(Map<String, String> parameters, ParserConfiguration config) {
+		String epsilonString = parameters.get(EPSILON_NAME);
+		if (epsilonString != null) {
+			epsilon = Double.parseDouble(epsilonString);
+		}
+		if (parameters.containsKey(Requirement.DEGENERATED_RING_TOLERANCE)) {
+			degeneratedRingTolerance = Double.parseDouble(parameters.get(Requirement.DEGENERATED_RING_TOLERANCE));
+		}
+	}
+
+	@Override
+	public void check(LinearRing lr) {
+		checkRingJava(lr);
+	}
+
+	private void checkRingJava(LinearRing lr) {
+		// keep original behavior (tiny/degenerate detection first)
+		List<Vertex> vertices = lr.getVertices();
+		Vector3d centroid = CovarianceMatrix.getCentroid(vertices);
+		EigenvalueDecomposition ed = OrthogonalRegressionPlane.decompose(vertices, centroid);
+		if (checkEigenvalues(lr, vertices, ed)) {
+			return; // error added, stop here
+		}
+		
+		List<Edge> edges = getEdgesForRing(lr);
+
+		// --- NEW: Broad-phase AABB for "point touches edge" test ---
+		// Precompute padded AABBs for all edges (padding = epsilon)
+		List<EdgeBox> edgeBoxes = new ArrayList<>(edges.size());
+		for (Edge e : edges) {
+			edgeBoxes.add(new EdgeBox(e, edgeAabb(e.getFrom(), e.getTo(), epsilon)));
+		}
+
+		// Optimized "point touches edge": first filter by padded edge AABB
+		for (EdgeBox eb : edgeBoxes) {
+			if (checkForPointsTouchingEdgeBroadPhase(lr, eb)) {
+				return;
+			}
+		}
+
+		// --- Original pairwise edge test, now with AABB early-out ---
+		for (int i = 0; i < edges.size() - 1; i++) {
+			Edge e1 = edges.get(i);
+			EdgeBox eb1 = edgeBoxes.get(i);
+
+			for (int j = i + 1; j < edges.size(); j++) {
+				Edge e2 = edges.get(j);
+
+				// share a vertex? skip
+				if (e1.getConnectionPoint(e2) != null) {
+					continue;
+				}
+
+				//skip if AABBs don't overlap
+				EdgeBox eb2 = edgeBoxes.get(j);
+				if (!overlaps(eb1.box, eb2.box)) {
+					continue;
+				}
+
+				// Narrow-phase distance test (unchanged)
+				Segment3d s1 = new Segment3d(e1.getFrom(), e1.getTo());
+				Segment3d s2 = new Segment3d(e2.getFrom(), e2.getTo());
+				DistanceResult dr = s1.getDistanceResult(s2);
+				if (dr.distance() < epsilon) {
+					CheckError err = new RingEdgeIntersectionError(lr, e1, e2, dr.point1());
+					CheckResult cr = new CheckResult(this, ResultStatus.ERROR, err);
+					lr.addCheckResult(cr);
+					return;
+				}
+			}
+		}
+
+		// no errors detected
+		CheckResult cr = new CheckResult(this, ResultStatus.OK, null);
+		lr.addCheckResult(cr);
+	}
+	
+	private boolean checkEigenvalues(LinearRing lr, List<Vertex> points, EigenvalueDecomposition ed) {
+		Matrix3x3d mat = new Matrix3x3d(ed.getV().getArray());
+		List<Vector3d> rotatedVertices = new ArrayList<>();
+		for (Vertex v : points) {
+			rotatedVertices.add(mat.mult(v));
+		}
+		BoundingBox bbox = BoundingBox.ofPoints(rotatedVertices);
+
+		int nrOfEigenvaluesBelowTolerance = 0;
+		if (bbox.getWidth() < degeneratedRingTolerance) {
+			nrOfEigenvaluesBelowTolerance++;
+		}
+		if (bbox.getHeight() < degeneratedRingTolerance) {
+			nrOfEigenvaluesBelowTolerance++;
+		}
+		if (bbox.getDepth() < degeneratedRingTolerance) {
+			nrOfEigenvaluesBelowTolerance++;
+		}
+
+		if (nrOfEigenvaluesBelowTolerance >= 2) {
+			CheckError err = new DegeneratedRingError(lr);
+			lr.addCheckResult(new CheckResult(this, ResultStatus.ERROR, err));
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Original narrow-phase "point near edge" with a broad-phase AABB filter.
+	 */
+	private boolean checkForPointsTouchingEdgeBroadPhase(LinearRing lr, EdgeBox eb) {
+		Segment3d seg = new Segment3d(eb.edge.getFrom(), eb.edge.getTo());
+
+		for (Vertex v : lr.getVertices()) {
+			// skip endpoints
+			if (v == eb.edge.getFrom() || v == eb.edge.getTo()) {
+				continue;
+			}
+			// Broad-phase: reject if vertex is outside padded edge AABB
+			if (!eb.box.encloses(v.getX(), v.getY(), v.getZ())) {
+				continue;
+			}
+			// Narrow-phase: exact segment-point distance
+			if (seg.getDistance(v) < epsilon) {
+				CheckError err = new PointTouchesEdgeError(lr, eb.edge, v);
+				CheckResult cr = new CheckResult(this, ResultStatus.ERROR, err);
+				lr.addCheckResult(cr);
+				return true;
+			}
+		}
+		return false;
+	}
+
+	private List<Edge> getEdgesForRing(LinearRing lr) {
+		List<Edge> edges = new ArrayList<>();
+		Geometry geom = lr.getParent().getParent();
+		for (int i = 0; i < lr.getVertices().size() - 1; i++) {
+			Vertex v1 = lr.getVertices().get(i);
+			Vertex v2 = lr.getVertices().get(i + 1);
+			Edge e = geom.getEdge(v1, v2);
+			if (e == null) {
+				throw new IllegalStateException("Edge between v1=" + v1 + " to v2=" + v2 + " is missing");
+			}
+			edges.add(e);
+		}
+		return edges;
+	}
+
+	@Override
+	public List<CheckId> getDependencies() {
+		return dependencies;
+	}
+
+	@Override
+	public Set<Requirement> appliesToRequirements() {
+		return CollectionUtils.singletonSet(Requirement.R_GE_R_SELF_INTERSECTION);
+	}
+
+	@Override
+	public RequirementType getType() {
+		return RequirementType.GEOMETRY;
+	}
+
+	@Override
+	public Check createNewInstance() {
+		return new RingSelfIntCheckAABB();
+	}
+
+	@Override
+	public CheckId getCheckId() {
+		return CheckId.C_GE_R_SELF_INTERSECTION;
+	}
+
+	//  TODO AUSLAGERN!!!
+	/* ======== AABB helpers (broad-phase) ======== */
+
+	private static final class EdgeBox {
+		final Edge edge;
+		final AABB box;
+		EdgeBox(Edge edge, AABB box) {
+			this.edge = edge;
+			this.box = box;
+		}
+	}
+
+	/** Builds a padded AABB around a segment (two vertices). */
+	private static AABB edgeAabb(Vertex a, Vertex b, double pad) {
+		double minX = Math.min(a.getX(), b.getX()) - pad;
+		double minY = Math.min(a.getY(), b.getY()) - pad;
+		double minZ = Math.min(a.getZ(), b.getZ()) - pad;
+		double maxX = Math.max(a.getX(), b.getX()) + pad;
+		double maxY = Math.max(a.getY(), b.getY()) + pad;
+		double maxZ = Math.max(a.getZ(), b.getZ()) + pad;
+		return new AABB(minX, minY, minZ, maxX, maxY, maxZ);
+	}
+
+	/** Returns true if two AABBs overlap (inclusive). */
+	private static boolean overlaps(AABB a, AABB b) {
+		return !(a.getMaxX() < b.getMinX() ||
+				 a.getMinX() > b.getMaxX() ||
+				 a.getMaxY() < b.getMinY() ||
+				 a.getMinY() > b.getMaxY() ||
+				 a.getMaxZ() < b.getMinZ() ||
+				 a.getMinZ() > b.getMaxZ());
+	}
+}

.metadata/.plugins/org.eclipse.core.resources/.history/a3/40d4c0da7cea0010125ad88dcc4485e5

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.function.Function;
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+public class BVHStructures {
+
+	/**
+	 * Generic node used in BVH tree
+	 */
+	public static class Node<E> {
+	    public List<Node<E>> children = new ArrayList<>();
+	    public AABB aabb;
+	    public E element;
+
+	    public Node() {
+	    	// Anchor-3DPoint given by means of its coords
+	        double zeroX = 0;
+	        double zeroY = 0;
+	        double zeroZ = 0;
+	        this.aabb = new AABB(zeroX, zeroY, zeroZ, zeroX, zeroY, zeroZ);
+	        this.element = null;
+	    }
+
+	    public boolean isLeaf() {
+	        return children.isEmpty() && element != null;
+	    }
+	}
+
+	/**
+	 * Represents a pair of geometry lists resulting from a split
+	 */
+	public static class SplitStruct<E> {
+	    public List<E> list1 = new ArrayList<>();
+	    public List<E> list2 = new ArrayList<>();
+	}
+
+	/**
+	 * Stack element used during recursive BVH tree construction
+	 */
+	public static class StackElement<E> {
+	    public int level;
+	    public Node<E> node;
+	    public List<E> elements = new ArrayList<>();
+
+	    public StackElement(int level, Node<E> node, List<E> elements) {
+	        this.level = level;
+	        this.node = node;
+	        this.elements = elements;
+	    }
+	}
+
+	/**
+	 * Pair of AABBs and polygon lists used during splitting
+	 */
+	public static class SplitStructB<E> {
+	    public AABB box1, box2;
+	    public List<E> list1 = new ArrayList<>();
+	    public List<E> list2 = new ArrayList<>();
+	}
+
+	/**
+	 * Generic array-based BVH node.
+	 * Stores an AABB and an associated element (typically a leaf object).
+	 */
+	public static class NodeB_Ar<E> {
+	    public AABB aabb;
+	    public E element;
+
+	    public NodeB_Ar(AABB aabb, E element) {
+	        this.aabb = aabb;
+	        this.element = element;
+	    }
+	}
+
+	/**
+	 * Stack element used for array-based BVH construction
+	 */
+	public static class StackElementAr {
+	    public int arrayIndex;
+	    public int level;
+	    public AABB aabb;
+	    public List<ConcretePolygon> polygons = new ArrayList<>();
+
+	    public StackElementAr(int arrayIndex, int level, AABB aabb, List<ConcretePolygon> polygons) {
+	        this.arrayIndex = arrayIndex;
+	        this.level = level;
+	        this.aabb = aabb;
+	        this.polygons = polygons;
+	    }
+	}
+
+	/**
+	 * Creates a comparator to sort elements by their AABB center X coordinate.
+	 */
+	public static <E> Comparator<E> compareCenterX(Function<E, AABB> aabbGetter) {
+	    return Comparator.comparingDouble(e -> {
+	        AABB box = aabbGetter.apply(e);
+	        return (box.getMinX() + box.getMaxX()) / 2.0;
+	    });
+	}
+
+	/**
+	 * Creates a comparator to sort elements by their AABB center Y coordinate.
+	 */
+	public static <E> Comparator<E> compareCenterY(Function<E, AABB> aabbGetter) {
+	    return Comparator.comparingDouble(e -> {
+	        AABB box = aabbGetter.apply(e);
+	        return (box.getMinY() + box.getMaxY()) / 2.0;
+	    });
+	}
+
+	/**
+	 * Creates a comparator to sort elements by their AABB center Z coordinate.
+	 */
+	public static <E> Comparator<E> compareCenterZ(Function<E, AABB> aabbGetter) {
+	    return Comparator.comparingDouble(e -> {
+	        AABB box = aabbGetter.apply(e);
+	        return (box.getMinZ() + box.getMaxZ()) / 2.0;
+	    });
+	}
+
+	/**
+	 * Sorts elements by AABB center along specified axis.
+	 *
+	 * @param elements   the list to sort
+	 * @param axis       0 = X, 1 = Y, 2 = Z
+	 * @param aabbGetter a function to extract the AABB from an element
+	 */
+	public static <E> void sortElementsByCenterAxis(List<E> elements, int axis, Function<E, AABB> aabbGetter) {
+	    switch (axis) {
+	        case 0 -> elements.sort(compareCenterX(aabbGetter));
+	        case 1 -> elements.sort(compareCenterY(aabbGetter));
+	        case 2 -> elements.sort(compareCenterZ(aabbGetter));
+	        default -> throw new IllegalArgumentException("Invalid axis index: " + axis);
+	    }
+	}
+
+	/**
+	 * Returns the index of the longest axis in the AABB
+	 */
+	public static int findLongestAxis(AABB aabb) {
+	    double x = aabb.getMaxX() - aabb.getMinX();
+	    double y = aabb.getMaxY() - aabb.getMinY();
+	    double z = aabb.getMaxZ() - aabb.getMinZ();
+
+	    if (x > y && x > z) return 0;
+	    if (y > x && y > z) return 1;
+	    return 2;
+	}
+
+	
+	    public static <E> AABB getAggregateAABB(List<E> elements, Function<E, AABB> aabbFunc) {
+	    double minX = Double.POSITIVE_INFINITY, minY = Double.POSITIVE_INFINITY, minZ = Double.POSITIVE_INFINITY;
+	    double maxX = Double.NEGATIVE_INFINITY, maxY = Double.NEGATIVE_INFINITY, maxZ = Double.NEGATIVE_INFINITY;
+
+	    for (E e : elements) {
+	        AABB aabb = aabbFunc.apply(e);
+	        minX = Math.min(minX, aabb.getMinX());
+	        minY = Math.min(minY, aabb.getMinY());
+	        minZ = Math.min(minZ, aabb.getMinZ());
+	        maxX = Math.max(maxX, aabb.getMaxX());
+	        maxY = Math.max(maxY, aabb.getMaxY());
+	        maxZ = Math.max(maxZ, aabb.getMaxZ());
+	    }
+
+	    return new AABB(minX, minY, minZ, maxX, maxY, maxZ);
+	}
+
+}	
\ No newline at end of file

.metadata/.plugins/org.eclipse.core.resources/.history/a9/f0bc3f46f1e800101776afd2c6cb3760

+<?xml version="1.0" encoding="utf-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>de.hft.stuttgart</groupId>
+		<artifactId>CityDoctorParent</artifactId>
+		<version>3.17.2</version>
+	</parent>
+	<properties>
+		<versionString>${project.version}-${git.commit.id.abbrev}</versionString>
+	</properties>
+	<artifactId>CityDoctorModel</artifactId>
+	<name>CityDoctorModel</name>
+	<dependencies>
+		<dependency>
+			<groupId>org.citygml4j</groupId>
+			<artifactId>citygml4j-core</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.citygml4j</groupId>
+			<artifactId>citygml4j-xml</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>de.hft.stuttgart</groupId>
+			<artifactId>citygml4j-quality-ade</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>gov.nist.math</groupId>
+			<artifactId>jama</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.jogamp.gluegen</groupId>
+			<artifactId>gluegen-rt-main</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.jogamp.jogl</groupId>
+			<artifactId>jogl-all-main</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-api</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-core</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.yaml</groupId>
+			<artifactId>snakeyaml</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.locationtech.proj4j</groupId>
+			<artifactId>proj4j</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.locationtech.proj4j</groupId>
+			<artifactId>proj4j-epsg</artifactId>
+		</dependency>
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <scope>compile</scope>
+        </dependency>
+		<dependency>
+			<groupId>org.locationtech.jts</groupId>
+			<artifactId>jts-core</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>io.github.earcut4j</groupId>
+			<artifactId>earcut4j</artifactId>
+		</dependency>
+	</dependencies>
+	<build>
+		<resources>
+			<resource>
+				<directory>src/main/resources</directory>
+				<filtering>true</filtering>
+			</resource>
+		</resources>
+		<plugins>
+			<plugin>
+				<groupId>pl.project13.maven</groupId>
+				<artifactId>git-commit-id-plugin</artifactId>
+				<version>4.9.10</version>
+				<executions>
+					<execution>
+						<id>get-the-git-infos</id>
+						<goals>
+							<goal>revision</goal>
+						</goals>
+					</execution>
+				</executions>
+				<configuration>
+					<dotGitDirectory>${project.basedir}/../../.git</dotGitDirectory>
+					<prefix>git</prefix>
+					<verbose>false</verbose>
+					<generateGitPropertiesFile>true</generateGitPropertiesFile>
+					<generateGitPropertiesFilename>
+						${project.build.outputDirectory}/git.properties</generateGitPropertiesFilename>
+					<gitDescribe>
+						<skip>false</skip>
+						<always>false</always>
+					</gitDescribe>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project>
\ No newline at end of file

.metadata/.plugins/org.eclipse.core.resources/.history/ab/c07a27be71e900101245d5e14ea95888

+package de.hft.stuttgart.citydoctor2.healing.bht;
+
+
+import de.hft.stuttgart.citydoctor2.datastructure.bht.*;
+import de.hft.stuttgart.citydoctor2.datastructure.*;
+import de.hft.stuttgart.citydoctor2.parser.*;
+import de.hft.stuttgart.citydoctor2.systemtest.TestUtil;
+import de.hft.stuttgart.citydoctor2.healing.*;
+
+import de.hft.stuttgart.citydoctor2.check.*;
+
+//import de.hft.stuttgart.citydoctor2.healing.*;
+
+import java.io.IOException;
+import java.util.*;
+
+//src/test/java/.../TestCityGmlAABB.java
+import java.net.URL;
+import java.nio.file.Paths;
+
+
+public class TestCityGmlAABB {
+
+    public static void main(String[] args) throws CityGmlParseException, IOException, InvalidGmlFileException {
+        
+    	
+    	
+    	
+    	System.out.println("=== CityGML AABB Test ===");
+
+        // --- 1) Ask user which test case to run ---
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter TestCase ID (e.g. PO_TWO_INNERS, SO_WRONG_POLY_ORIENTATION_SINGLE) "
+                + "or press Enter for default: ");
+                String id = sc.nextLine().trim();
+        
+                
+	     // Default wählen 
+	     String resourcePath = TestPaths.PO_TWO_INNERS;
+	
+	     if (!id.isEmpty()) {
+	         try {
+	             // Holt  TestPaths per Reflection
+	             resourcePath = (String) TestPaths.class.getField(id).get(null);
+	         } catch (ReflectiveOperationException ex) {
+	             System.out.println("Unknown testcase: " + id + " (using default)");
+	         }
+	     }
+     
+
+
+	     String filePathForParser = resolveResourceOnClasspath(resourcePath);
+	     System.out.println("Using file: " + filePathForParser);
+	
+	 
+        
+     // --- 2) Load CityGML model ---
+	    ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
+	    // TODO: Study class model
+	    CityDoctorModel model = de.hft.stuttgart.citydoctor2.healing.TestUtil.loadCityModel(filePathForParser, config);
+        System.out.println("Model loaded successfully.\n");
+
+        List<Building> buildings = model.getBuildings();
+
+     // --- 3) Menu: choose granularity ---
+        System.out.println("\nChoose granularity:");
+        System.out.println("  1) Polygon-level (broad-phase)");
+        System.out.println("  2) Ring-level (EXTERIOR)");
+        System.out.println("  3) Ring-level (INTERIOR)");
+        System.out.println("  4) Vertex-level (fine-phase)");
+        System.out.println("  5) All of the above");
+        System.out.print("Your choice [1-5]: ");
+        int choice = readChoice(sc, 1, 5);
+
+        boolean doPolygon = (choice == 1 || choice == 5);
+        boolean doExtRing = (choice == 2 || choice == 5);
+        boolean doIntRing = (choice == 3 || choice == 5);
+        boolean doVertex  = (choice == 4 || choice == 5);
+
+        // --- 4) Run the selected modes ---
+        if (doPolygon) runPolygonMode(buildings);
+        if (doExtRing) runRingMode(buildings, true);
+        if (doIntRing) runRingMode(buildings, false);
+        if (doVertex)  runVertexMode(buildings);
+
+        System.out.println("\n=== Done ===");
+    }
+
+    // ---------- Modes ----------
+
+    private static void runPolygonMode(List<Building> buildings) {
+        System.out.println("\n> Polygon-level AABB (broad-phase)");
+        Set<ConcretePolygon> polys = collectAllPolygons(buildings);
+
+        AABBTree<ConcretePolygon> bvh = new AABBTree<>(
+            new ArrayList<>(polys),
+            AABBUtils::getAABB
+        );
+
+        System.out.println("Polygons: " + polys.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runRingMode(List<Building> buildings, boolean exterior) {
+        String label = exterior ? "EXTERIOR" : "INTERIOR";
+        System.out.println("\n> Ring-level AABB (" + label + ")");
+
+        Set<LinearRing> rings = exterior
+                ? collectExteriorRings(buildings)
+                : collectInteriorRings(buildings);
+
+        AABBTree<LinearRing> bvh = new AABBTree<>(
+            new ArrayList<>(rings),
+            AABBUtils::computeAABBFromRing
+        );
+
+        System.out.println(label + " rings: " + rings.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runVertexMode(List<Building> buildings) {
+        System.out.println("\n> Vertex-level AABB (fine-phase)");
+        Set<Vertex> verts = collectAllVertices(buildings);
+
+        AABBTree<Vertex> bvh = new AABBTree<>(
+            new ArrayList<>(verts),
+            AABBUtils::computeAABBFromVertex
+        );
+
+        System.out.println("Vertices: " + verts.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    // ---------- Collectors ----------
+
+    /** Collects all ConcretePolygons (unique) via visitor. */
+    private static Set<ConcretePolygon> collectAllPolygons(List<Building> buildings) {
+        Set<ConcretePolygon> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    set.add(poly.getOriginal());
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all EXTERIOR rings (unique). */
+    private static Set<LinearRing> collectExteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    LinearRing ext = poly.getOriginal().getExteriorRing();
+                    if (ext != null) set.add(ext);
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all INTERIOR rings (unique). */
+    private static Set<LinearRing> collectInteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    List<LinearRing> inner = poly.getOriginal().getInnerRings();
+                    if (inner != null && !inner.isEmpty()) {
+                        set.addAll(inner);
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all vertices (unique) from both exterior and interior rings. */
+    private static Set<Vertex> collectAllVertices(List<Building> buildings) {
+        Set<Vertex> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    ConcretePolygon cp = poly.getOriginal();
+                    LinearRing ext = cp.getExteriorRing();
+                    if (ext != null) set.addAll(ext.getVertices());
+                    List<LinearRing> inner = cp.getInnerRings();
+                    if (inner != null) {
+                        for (LinearRing lr : inner) set.addAll(lr.getVertices());
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    // ---------- Utils ----------    
+    /* Helper method reads choice of the user */
+    private static int readChoice(Scanner sc, int min, int max) {
+        while (true) {
+            String s = sc.nextLine().trim();
+            try {
+                int v = Integer.parseInt(s);
+                if (v >= min && v <= max) return v;
+            } catch (NumberFormatException ignored) {}
+            System.out.print("Please enter a number between " + min + " and " + max + ": ");
+        }
+    }
+    
+ /* Helper method Pathfinder */
+    private static String resolveResourceOnClasspath(String resourcePath) {
+        String rp = normalizeResourcePath(resourcePath);
+
+        // 1) Klassenpfad via Class.getResource
+        URL url = TestCityGmlAABB.class.getResource(rp);
+
+        // 2) Klassenpfad via Context-ClassLoader: 
+        if (url == null) {
+            ClassLoader cl = Thread.currentThread().getContextClassLoader();
+            String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+            url = cl.getResource(noSlash);
+        }
+
+        // 3) Wenn gefunden: in Pfad umwandeln
+        if (url != null) {
+            try {
+                return Paths.get(url.toURI()).toString();
+            } catch (Exception e) {
+                throw new RuntimeException("Konnte Resource-URI nicht auflösen: " + url, e);
+            }
+        }
+
+        // 4) Fallbacks: Projekt-relative Kandidaten prüfen
+        String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+        String[] candidates = {
+            "src/test/resources/" + noSlash,
+            "src/main/resources/" + noSlash,
+            resourcePath // falls bereits ein echter Dateipfad übergeben wurde
+        };
+        for (String cand : candidates) {
+            java.nio.file.Path p = java.nio.file.Paths.get(cand);
+            if (java.nio.file.Files.exists(p)) {
+                return p.toAbsolutePath().toString();
+            }
+        }
+
+        throw new IllegalArgumentException(
+            "Resource nicht im Klassenpfad gefunden: " + resourcePath + " (versucht als: " + rp + ")"
+        );
+    }
+
+    // FÜR ALLE FÄLLE zur Zeit REDUNDAD
+    private static String normalizeResourcePath(String path) { 
+        String p = path.replace('\\', '/');
+        // Quellordner-Präfixe entfernen, falls mit übergeben
+        if (p.startsWith("src/test/resources/")) {
+            p = p.substring("src/test/resources/".length());
+        } else if (p.startsWith("src/main/resources/")) {
+            p = p.substring("src/main/resources/".length());
+        }
+        // Für Class.getResource: führenden Slash setzen
+        if (!p.startsWith("/")) p = "/" + p;
+        return p;
+    }
+
+}
+
+
+

.metadata/.plugins/org.eclipse.core.resources/.history/ae/300a0879f1e700101110d31642d3da88

+package de.hft.stuttgart.citydoctor2.checks.bht;
+
+
+
+/**
+ * Central collection of CityGML test file paths used for AABB / healing experiments.
+ * Files are located under {@code src/test/resources} or {@code src/test/resources/bht/}
+ * ACHTUNG: mit '!!!' markierte Objekte haben einen falschen Pfad
+ */
+public final class TestPaths {
+
+    private TestPaths() {
+        // utility class
+    }
+
+    // ==================================================
+    // Schematron / Validation tests
+    // ==================================================
+
+    /**!!! Not XSD valid, namespaces removed, for schematron experiments. */
+    public static final String SCHEMATRON =
+    		"CityDoctorParent/CityDoctorValidation/target/test-classes/SimpleSolid_SrefBS-Schematron-Test.gml";
+             //CityDoctorParent
+            //"src/test/resources/bht/SimpleSolid_SrefBS-Schematron-Test.gml";
+
+
+    // ==================================================
+    // LinearRing (LR) test cases
+    // ==================================================
+
+    /**1 LinearRing has only 2 points. */
+    public static final String LR_2POINTS =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0001-T0001.gml";
+    
+    /**2 LinearRing has 3 points but is not closed. */
+    public static final String LR_NOTCLOSED =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0001-T0002.gml";
+
+    /**3 LinearRing has consecutive duplicate vertices. */
+    public static final String LR_DUPLICATE_CONSEC =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0002-T0001.gml";
+
+    /**4 LinearRing has non-consecutive duplicate vertices. */
+    public static final String LR_DUPLICATE_NONCONSEC =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0002-T0002.gml";
+
+    /**added 5 LinearRing points form a straight line. */
+    public static final String LR_LINE =
+        "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0003.gml";
+
+    /**added 6 LinearRing has consecutive points closer than 0.1. */
+    public static final String LR_TOO_CLOSE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0004.gml";
+
+    /**added 7 LinearRing has too few points and duplicate points. */
+    public static final String LR_TOO_FEW_DUP =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0005.gml";
+
+    /**8 LinearRing is not closed. */
+    public static final String LR_NOTCLOSED_2 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0003-T0001.gml";
+
+    /**added 9 LinearRing is closed but with point distance < 0.1. */
+    public static final String LR_CLOSED_SMALLDIST =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0003-T0002.gml";
+
+    /**10 LinearRing has a loop. */
+    public static final String LR_LOOP =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0004-T0004.gml";
+
+    /** 11 LinearRing point touches edge with distance < 0.1. */
+    public static final String LR_TOUCH_EDGE =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0004-T0005.gml";
+
+
+    // ==================================================
+    // Polygon (PO) test cases
+    // ==================================================
+
+    /**12 Inner ring intersects outer ring. */
+    public static final String PO_INTERSECT_OUTER =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0001.gml";
+
+    /**13 Polygon has 2 inner rings. */
+    public static final String PO_TWO_INNERS =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0002.gml";
+
+    /**14 Polygon has 2 intersecting inner rings. */
+    public static final String PO_INNER_INTERSECT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0003.gml";
+
+    /**15 Polygon has 2 inner rings; one vertex too far from the plane. */
+    public static final String PO_INNER_OFF_PLANE =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-PO-0002-T0001.gml";
+
+    /**added 16 Polygon has normal deviation error. */
+    public static final String PO_NORMAL_ERROR =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0002-T0002.gml";
+
+    /**17 Polygon has disconnected interior surface. */
+    public static final String PO_DISCONNECTED_INTERIOR_1 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0003-T0001.gml";
+
+    /**added 18 Polygon has disconnected interior surface due to two inner rings. */
+    public static final String PO_DISCONNECTED_INTERIOR_2 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0003-T0002.gml";
+
+    /** added 19 Inner ring completely outside the outer ring. */
+    public static final String PO_INNER_OUTSIDE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0004-T0001.gml";
+
+    /**added 20 Inner ring completely inside another inner ring. */
+    public static final String PO_INNER_INSIDE_ANOTHER =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0005-T0001.gml";
+
+    /**21 Two inner rings with wrong orientation. */
+    public static final String PO_TWO_INNERS_WRONG_ORIENT =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-PO-0006-T0001.gml";
+
+
+    // ==================================================
+    // Solid (SO) test cases
+    // ==================================================
+
+    /**added 22 Solid consists of only 3 polygons. */
+    public static final String SO_TOO_FEW_POLYGONS =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0001-T0001.gml";
+
+    /**added 23 Shell is not watertight. */
+    public static final String SO_NOT_WATERTIGHT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0002-T0001.gml";
+    /** 24 Two buildings connected only by a single point. */
+    public static final String SO_CONNECTED_BY_POINT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0003-T0001.gml";
+
+    /**25 Roof point slightly deviates (e.g., 10.0 14.95 2.95 vs 10.0 15.0 3.0). */
+    public static final String SO_ROOF_COORD_DEVIATION_1 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0004-T0001.gml";
+
+    /**25 Missing polygon. */
+    public static final String SO_MISSING_POLYGON =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0004-T0002.gml";
+
+    /*
+     * 
+     * komplex Data from NRW; whole Quartier
+     * */
+        /** 26added EXTRA Whole Church forum. */
+        public static final String CHURCH_FORUM =
+                "src/test/resources/bht/LoD2_32_344_5675_1_NW.gml";
+
+    /* LOST DATA 
+    /**   Slight coordinate deviations on multiple roof polygons (CityGML 2.0 only). 
+    public static final String SO_ROOF_COORD_DEVIATION_2 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0004-T0003.gml";
+     */
+    /**added 27 Solid geometry actually contains two buildings. */
+    public static final String SO_TWO_BUILDINGS_IN_ONE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0005-T0001.gml";
+
+    
+    // 
+    // Falsches Datei !!!!    
+    /**!!! 28 Self-intersecting geometry.  */
+    public static final String SO_SELF_INTERSECTING =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0003-T0001.gml";
+
+    // ACHTUNG FALSCHES LABEL 
+    /**29 Polygon with wrong orientation.  */
+    public static final String ENTER_LABEL1 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0001.gml";
+
+    /**30 Polygon with wrong orientation. ACHTUNG FALSCHES LABEL */
+    public static final String ENTER_LABEL2 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0002.gml";
+
+    /**31 Polygon with wrong orientation. ACHTUNG FALSCHES LABEL */
+    public static final String ENTER_LABEL3 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0003.gml";
+    //
+    
+    /** LOST! 33 All polygons have wrong orientation. */
+    public static final String SO_WRONG_POLY_ORIENTATION_ALL =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0008-T0001.gml";
+}

.metadata/.plugins/org.eclipse.core.resources/.history/af/80f574e75fea0010125ad88dcc4485e5

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+import java.util.*;
+
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing.LinearRingType;
+
+
+public class Main {
+	/**
+	 * Entry point for AABB testing
+	 */
+	public static void main(String[] args) {
+	    System.out.println("=== AABB TEST ===");
+
+	    ConcretePolygon polygon = new ConcretePolygon();
+	    LinearRing exterior = new LinearRing(LinearRingType.EXTERIOR);
+
+	    exterior.addVertex(new Vertex(0, 0, 0));
+	    exterior.addVertex(new Vertex(1, 0, 0));
+	    exterior.addVertex(new Vertex(0, 1, 0));
+	    exterior.addVertex(new Vertex(0, 0, 0));
+
+	    polygon.setExteriorRing(exterior);
+
+	    // Define points of a tetrahedron
+	    Point p1 = new Point(0, 0, 0);
+	    Point p2 = new Point(1, 0, 0);
+	    Point p3 = new Point(0.5, 1, 0);
+	    Point p4 = new Point(0.5, 0.5, 1);
+
+	    // Define triangle faces of the tetrahedron
+	    ConcretePolygon base = new ConcretePolygon();
+	    LinearRing baseRing = new LinearRing(LinearRingType.EXTERIOR);
+	    baseRing.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    baseRing.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    baseRing.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    baseRing.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    base.setExteriorRing(baseRing);
+
+	    ConcretePolygon side1 = new ConcretePolygon();
+	    LinearRing ring1 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring1.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring1.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring1.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring1.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    side1.setExteriorRing(ring1);
+
+	    ConcretePolygon side2 = new ConcretePolygon();
+	    LinearRing ring2 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring2.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring2.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring2.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring2.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    side2.setExteriorRing(ring2);
+
+	    ConcretePolygon side3 = new ConcretePolygon();
+	    LinearRing ring3 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring3.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring3.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring3.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring3.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    side3.setExteriorRing(ring3);
+
+	    List<ConcretePolygon> poly = Arrays.asList(base, side1, side2, side3);
+
+	    AABB aabb = BVHStructures.getAggregateAABB(poly);
+	    System.out.println("\nComputed AABB:");
+	    aabb.print();
+        
+	    /*** 3D-Point-coords with Test Properties  ***/ 
+	    // Inside laying Point
+	    double testInsideX = 0.5; 
+	    double testInsideY = 0.5;
+	    double testInsideZ = 0.3;
+	    // Outside laying Point
+	    double testOutsideX = 2.0; 
+	    double testOutsideY = 2.0;
+	    double testOutsideZ = 2.0;
+	    // On edge laying Point
+	    double testOnEdgeX = 1.0;
+	    double testOnEdgeY = 1.0;
+	    double testOnEdgeZ = 0.0;
+	    
+	    System.out.println("\nTest point (inside): " + testInsideX + " " + testInsideY + " " + testInsideZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testInsideX, testInsideY, testInsideZ));
+
+	    System.out.println("\nTest point (outside): " + testOutsideX + " " + testOutsideY + " " + testOutsideZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testOutsideX, testOutsideY, testOutsideZ));
+
+	    System.out.println("\nTest point (on edge): " + testOnEdgeX + " " + testOnEdgeY + " " + testOnEdgeZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testOnEdgeX, testOnEdgeY, testOnEdgeZ));
+	}
+	}

.metadata/.plugins/org.eclipse.core.resources/.history/b5/605de4fbf0e700101110d31642d3da88

+package de.hft.stuttgart.citydoctor2.checks.aabb;
+
+import java.util.*;
+
+import de.hft.stuttgart.citydoctor2.checks.aabb.AABB;
+import de.hft.stuttgart.citydoctor2.checks.aabb.BVHStructures;
+import de.hft.stuttgart.citydoctor2.checks.aabb.Point;
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing.LinearRingType;
+
+
+public class TestDummyAABB {
+	/**
+	 * Entry point for AABB testing
+	 */
+	public static void main(String[] args) {
+	    System.out.println("=== AABB TEST ===");
+
+	    ConcretePolygon polygon = new ConcretePolygon();
+	    LinearRing exterior = new LinearRing(LinearRingType.EXTERIOR);
+
+	    exterior.addVertex(new Vertex(0, 0, 0));
+	    exterior.addVertex(new Vertex(1, 0, 0));
+	    exterior.addVertex(new Vertex(0, 1, 0));
+	    exterior.addVertex(new Vertex(0, 0, 0));
+
+	    polygon.setExteriorRing(exterior);
+
+	    // Define points of a tetrahedron
+	    Point p1 = new Point(0, 0, 0);
+	    Point p2 = new Point(1, 0, 0);
+	    Point p3 = new Point(0.5, 1, 0);
+	    Point p4 = new Point(0.5, 0.5, 1);
+
+	    // Define triangle faces of the tetrahedron
+	    ConcretePolygon base = new ConcretePolygon();
+	    LinearRing baseRing = new LinearRing(LinearRingType.EXTERIOR);
+	    baseRing.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    baseRing.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    baseRing.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    baseRing.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    base.setExteriorRing(baseRing);
+
+	    ConcretePolygon side1 = new ConcretePolygon();
+	    LinearRing ring1 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring1.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring1.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring1.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring1.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    side1.setExteriorRing(ring1);
+
+	    ConcretePolygon side2 = new ConcretePolygon();
+	    LinearRing ring2 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring2.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring2.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring2.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring2.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    side2.setExteriorRing(ring2);
+
+	    ConcretePolygon side3 = new ConcretePolygon();
+	    LinearRing ring3 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring3.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring3.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring3.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring3.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    side3.setExteriorRing(ring3);
+
+	    List<ConcretePolygon> poly = Arrays.asList(base, side1, side2, side3);
+
+	    AABB aabb = BVHStructures.getAggregateAABB(poly);
+	    System.out.println("\nComputed AABB:");
+	    aabb.print();
+        
+	    /*** 3D-Point-coords with Test Properties  ***/ 
+	    // Inside laying Point
+	    double testInsideX = 0.5; 
+	    double testInsideY = 0.5;
+	    double testInsideZ = 0.3;
+	    // Outside laying Point
+	    double testOutsideX = 2.0; 
+	    double testOutsideY = 2.0;
+	    double testOutsideZ = 2.0;
+	    // On edge laying Point
+	    double testOnEdgeX = 1.0;
+	    double testOnEdgeY = 1.0;
+	    double testOnEdgeZ = 0.0;
+	    
+	    System.out.println("\nTest point (inside): " + testInsideX + " " + testInsideY + " " + testInsideZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testInsideX, testInsideY, testInsideZ));
+
+	    System.out.println("\nTest point (outside): " + testOutsideX + " " + testOutsideY + " " + testOutsideZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testOutsideX, testOutsideY, testOutsideZ));
+
+	    System.out.println("\nTest point (on edge): " + testOnEdgeX + " " + testOnEdgeY + " " + testOnEdgeZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testOnEdgeX, testOnEdgeY, testOnEdgeZ));
+	}
+	}

.metadata/.plugins/org.eclipse.core.resources/.history/b5/d04bfe656bea0010125ad88dcc4485e5

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+
+import java.util.*;
+
+//import java.util.List;
+
+
+/**
+ * @author Baris Numanoglu
+ * 
+ * Utility class providing AABB-related helper methods.
+ * 
+ * Contains functionality for computing axis-aligned bounding boxes (AABBs)
+ * from geometric data structures such as {@link ConcretePolygon} or {@link LinearRing}.
+ * 
+ * All methods are static.
+ */
+	public class AABBUtils {
+
+    public static AABB getAABB(ConcretePolygon poly) {
+        LinearRing ring = poly.getExteriorRing();
+        if (ring == null) return null;
+        return computeAABBFromRing(ring);
+    }
+    
+    /**
+     * Computes an AABB from a LinearRing by iterating over its vertices.
+     *
+     * @param ring the LinearRing whose vertices define the AABB
+     * @return AABB enclosing the ring; returns an empty AABB if the ring has no vertices
+     */
+    public static AABB computeAABBFromRing(LinearRing ring) {
+        if (ring == null || ring.getVertices() == null || ring.getVertices().isEmpty()) {
+            return new AABB(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
+                            Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
+        }
+
+        double minX = Double.POSITIVE_INFINITY;
+        double minY = Double.POSITIVE_INFINITY;
+        double minZ = Double.POSITIVE_INFINITY;
+        double maxX = Double.NEGATIVE_INFINITY;
+        double maxY = Double.NEGATIVE_INFINITY;
+        double maxZ = Double.NEGATIVE_INFINITY;
+
+        for (Vertex v : ring.getVertices()) {
+            double x = v.getX();
+            double y = v.getY();
+            double z = v.getZ();
+
+            minX = Math.min(minX, x);
+            minY = Math.min(minY, y);
+            minZ = Math.min(minZ, z);
+            maxX = Math.max(maxX, x);
+            maxY = Math.max(maxY, y);
+            maxZ = Math.max(maxZ, z);
+        }
+
+        return new AABB(minX, minY, minZ, maxX, maxY, maxZ);
+    }    
+    /**
+     * PREMORDIAL: substitutes the earlier semantic of AABB-Point-Init. 
+     * Computes the min and max bounds (6 doubles) from two points.
+     * 
+     * @param p1 the first point
+     * @param p2 the second point
+     * @return an array of 6 doubles: [minX, minY, minZ, maxX, maxY, maxZ]
+     */
+    public static double[] extractBoundsFromPoints(Point p1, Point p2) {
+        double minX = Math.min(p1.getX(), p2.getX());
+        double minY = Math.min(p1.getY(), p2.getY());
+        double minZ = Math.min(p1.getZ(), p2.getZ());
+        double maxX = Math.max(p1.getX(), p2.getX());
+        double maxY = Math.max(p1.getY(), p2.getY());
+        double maxZ = Math.max(p1.getZ(), p2.getZ());
+
+        return new double[] { minX, minY, minZ, maxX, maxY, maxZ };
+    }
+    
+    
+    ////////////////////////////////////////////////////////////////////////////////////////////
+    /**
+     * Computes an AABB for a single vertex (degenerate AABB with min=max=vertex coordinates).
+     *
+     * @param vertex the vertex to wrap in an AABB
+     * @return AABB centered at the vertex position
+     */
+    public static AABB computeAABBFromVertex(Vertex vertex) {
+        if (vertex == null) {
+            // Return a degenerate AABB with infinite bounds if vertex is null
+            return new AABB(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
+                            Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
+        }
+
+        double x = vertex.getX();
+        double y = vertex.getY();
+        double z = vertex.getZ();
+
+        // AABB is degenerate here: min=max=(x,y,z)
+        return new AABB(x, y, z, x, y, z);
+    }
+    
+    /** Returns true if the AABB is (nearly) flat in at least two axes. */
+    public static boolean isDegenerate(AABB aabb, double tol) {
+        double dx = aabb.getMaxX() - aabb.getMinX();
+        double dy = aabb.getMaxY() - aabb.getMinY();
+        double dz = aabb.getMaxZ() - aabb.getMinZ();
+        int flatAxes = 0;
+        if (dx <= tol) flatAxes++;
+        if (dy <= tol) flatAxes++;
+        if (dz <= tol) flatAxes++;
+        return flatAxes >= 2; // cannot host 3 distinct points in 3D
+    }
+
+    /**
+     * Counts distinct vertices of a ring using a tolerance.
+     * Implementation: uniform quantization (grid hashing) for speed and determinism.
+     */
+    public static int countDistinctVertices(LinearRing ring, double tol) {
+        if (ring == null || ring.getVertices() == null) return 0;
+        // Use a quantization resolution based on tol (avoid div by zero).
+        final double q = (tol > 0) ? tol : 1e-9;
+
+        // Hash set of quantized integer triplets "ix|iy|iz"
+        Set<Long> buckets = new HashSet<>(ring.getVertices().size() * 2);
+        for (Vertex v : ring.getVertices()) {
+            long ix = Math.round(v.getX() / q);
+            long iy = Math.round(v.getY() / q);
+            long iz = Math.round(v.getZ() / q);
+            // pack into a 64-bit key (simple mixing; safe if ranges are reasonable)
+            long key = mix3(ix, iy, iz);
+            buckets.add(key);
+        }
+        return buckets.size();
+    }
+
+    // TODO replace with older hash functions from project
+    // Simple 3D integer mix to a 64-bit key (Xorshift-ish) from JavaDoc
+    private static long mix3(long x, long y, long z) {
+        long h = x * 73856093L ^ y * 19349663L ^ z * 83492791L;
+        // final avalanche
+        h ^= (h >>> 33);
+        h *= 0xff51afd7ed558ccdL;
+        h ^= (h >>> 33);
+        h *= 0xc4ceb9fe1a85ec53L;
+        h ^= (h >>> 33);
+        return h;
+    }
+    
+    
+  /* COMING SOON */
+
+}

.metadata/.plugins/org.eclipse.core.resources/.history/b6/80ee5ae452e900101245d5e14ea95888

+package de.hft.stuttgart.citydoctor2.checks.bht;
+
+import java.io.IOException;
+//import java.io.InputStream; //new
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.Scanner; //new
+
+import org.junit.Test;
+
+import de.hft.stuttgart.citydoctor2.check.CheckableUtilsVisitor;
+import de.hft.stuttgart.citydoctor2.check.CheckableVisitor;
+import de.hft.stuttgart.citydoctor2.check.Check;
+import de.hft.stuttgart.citydoctor2.check.ValidationConfiguration;
+import de.hft.stuttgart.citydoctor2.datastructure.Building;
+import de.hft.stuttgart.citydoctor2.datastructure.CityDoctorModel;
+import de.hft.stuttgart.citydoctor2.datastructure.CityObject;
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.Geometry;
+import de.hft.stuttgart.citydoctor2.datastructure.Polygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing.LinearRingType;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.exceptions.CityDoctorWriteException;
+import de.hft.stuttgart.citydoctor2.healing.TestUtil;
+import de.hft.stuttgart.citydoctor2.parser.CityGmlParseException;
+import de.hft.stuttgart.citydoctor2.parser.InvalidGmlFileException;
+
+public class TestExample {
+	
+
+//	InputStream inStream = getClass().getClassLoader().getResourceAsStream("SimpleSolid_SrefBS.gml"); //new
+//	//if you want to load a src/test/resources file out of a different package
+	
+	public static void main(String[] args) throws CityGmlParseException, IOException, InvalidGmlFileException {
+		System.out.println("Start TestExample... \n"); //new
+		
+//		String path = args[0];		
+//		String path = "src/test/resources/SimpleSolid_SrefBS.gml"; //new valid LoD2 model
+//		String path = "src/test/resources/TestBuilding1.gml"; //new block model
+		
+		//new valid model with inner rings
+		String path = "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0002.gml"; 
+		
+		// too big, main gets terminated
+//		String path = "src/test/resources/bht/KreishausFeuerwache.gml"; 
+//		String path = "src/test/resources/bht/TestBuilding_SelfInt.gml";
+		
+		ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
+		CityDoctorModel model = TestUtil.loadCityModel(path, config);
+		
+		System.out.println("\nModel has been loaded..."); //new
+		
+		// visitor
+		// filter duplicate polygons out
+		Set<ConcretePolygon> allBuildingPolygons = new HashSet<>();
+		for (Building b : model.getBuildings()) {
+			b.accept(new CheckableUtilsVisitor() {
+				public void check(Polygon poly) {
+					allBuildingPolygons.add(poly.getOriginal());
+				}
+			});
+		}
+		System.out.println("\nPolygons via visitor:" + allBuildingPolygons); //new
+		
+		
+//		// for loop
+		List<Polygon> allBuildingPolygons2 = new ArrayList<>();
+		for (Building b : model.getBuildings()) {
+			for (Geometry geom : b.getGeometries()) {
+				for (Polygon p : geom.getPolygons()) {
+					allBuildingPolygons2.add(p);
+					allBuildingPolygons2.add(p.getOriginal()); //new
+				}
+			}
+		}
+		System.out.println("\nPolygon List:" + allBuildingPolygons2); //new
+		
+		
+		// new: LinearRings
+		// visitor
+		// filter duplicate linear rings out
+		Set<LinearRing> allBuildingLinearRings = new HashSet<>();
+		for (Building b : model.getBuildings()) {
+			b.accept(new CheckableUtilsVisitor() {
+				public void check(LinearRing ring) {
+					allBuildingLinearRings.add(ring);
+				}
+					
+			});
+		}
+		System.out.println("\nLinearRings via visitor:" + allBuildingLinearRings); //new
+			
+		
+		// new: ExteriorRings
+		// visitor
+		// filter duplicate exterior rings out
+		Set<LinearRing> allBuildingExteriorRings = new HashSet<>();
+		for (Building b : model.getBuildings()) {
+			b.accept(new CheckableUtilsVisitor() {
+				public void check(LinearRing ring) {
+					allBuildingExteriorRings.add(ring.getParent().getExteriorRing()); // ACHTUNG getParent
+				}
+			});
+		}
+		System.out.println("\nExteriorRings via visitor:" + allBuildingExteriorRings); //new
+		
+		
+//		// new: ExteriorRings (List)
+//		// for loop
+//		List<LinearRing> allBuildingExteriorRings2 = new ArrayList<>();
+//		for (Building b : model.getBuildings()) {
+//			for (Geometry geom : b.getGeometries()) {
+//				for (Polygon p : geom.getPolygons()) {
+//					allBuildingExteriorRings2.add(p.getOriginal().getExteriorRing());
+//				}
+//			}
+//		}
+//		System.out.println("\nExteriorRing List:" + allBuildingExteriorRings2); //new
+				
+		
+		// new: InnerRings
+		// visitor
+		// filter duplicate inner rings out
+		Set<LinearRing> allBuildingInnerRings = new HashSet<>();
+		for (Building b : model.getBuildings()) {
+			b.accept(new CheckableUtilsVisitor() {
+				public void check(Polygon poly) {
+					allBuildingInnerRings.addAll(poly.getOriginal().getInnerRings());// ACHTUNG getOriginal
+				}
+			});
+		}
+		System.out.println("\nInnerRings via visitor:" + allBuildingInnerRings); //new
+		
+		
+//		// new: InnerRings (List)
+//		// for loop
+//		List<LinearRing> allBuildingInnerRings2 = new ArrayList<>();
+//		for (Building b : model.getBuildings()) {
+//			for (Geometry geom : b.getGeometries()) {
+//				for (Polygon p : geom.getPolygons()) {
+//					for (LinearRing lr : p.getInnerRings()) {
+//						allBuildingInnerRings2.add(lr);
+//					}
+//
+//				}
+//			}
+//		}
+//		System.out.println("\nInnerRing List:" + allBuildingInnerRings2); //new
+		
+		
+//		// get Vertices for LinearRing, ExteriorRing and InteriorRing
+		
+//		// new: LinearRingVertices
+//		// visitor
+//		// filter duplicate linear rings out
+//		Set<Vertex> allBuildingLinearRingVertices = new HashSet<>();
+//		for (Building b : model.getBuildings()) {
+//			b.accept(new CheckableUtilsVisitor() {
+//				public void check(LinearRing ring) {
+//					allBuildingLinearRingVertices.addAll(ring.getVertices());
+//				}
+//					
+//			});
+//		}
+//		System.out.println("\nLinearRingVertices via visitor:" + allBuildingLinearRingVertices); //new
+
+		
+//		// new: ExteriorRingVertices
+//		// visitor
+//		// filter duplicate exterior rings out
+//		Set<Vertex> allBuildingExteriorRingVertices = new HashSet<>();
+//		for (Building b : model.getBuildings()) {
+//			b.accept(new CheckableUtilsVisitor() {
+//				public void check(LinearRing ring) {
+//					allBuildingExteriorRingVertices.addAll(ring.getParent().getOriginal().getExteriorRing().getVertices()); 
+//				}
+//					
+//			});
+//		}
+//		System.out.println("\nExteriorRingVertices via visitor:" + allBuildingExteriorRingVertices); //new
+
+
+//		// new: ExteriorRingVertices (List)
+//		// for loop
+//		List<Vertex> allBuildingExteriorRingVertices2 = new ArrayList<>();
+//		for (Building b : model.getBuildings()) {
+//			for (Geometry geom : b.getGeometries()) {
+//				for (Polygon p : geom.getPolygons()) {
+//						for (Vertex v : p.getOriginal().getExteriorRing().getVertices()) {
+//							allBuildingExteriorRingVertices2.add(v); 
+//						}
+//				}
+//			}
+//		}
+//		System.out.println("\nExteriorRingVertices List:" + allBuildingExteriorRingVertices2); //new
+		
+//		// new: InnerRingVertices
+//		// visitor
+//		// filter duplicate linear vertices out
+//		Set<Vertex> allBuildingInnerRingVertices = new HashSet<>();
+//		for (Building b : model.getBuildings()) {
+//			b.accept(new CheckableUtilsVisitor() {
+//				public void check(Polygon poly) {
+//					poly.getOriginal().getInnerRings().forEach(ring->allBuildingInnerRingVertices.addAll(ring.getVertices()));
+//				}
+//			});
+//		}
+//		System.out.println("\nInnerRingVertices via visitor:" + allBuildingInnerRingVertices); //new
+		
+		
+//		// new: InnerRingVertices (List)
+//		// for loop
+//		List<Vertex> allInnerRingVertices2 = new ArrayList<>();
+//		for (Building b : model.getBuildings()) {
+//			for (Geometry geom : b.getGeometries()) {
+//				for (Polygon p : geom.getPolygons()) {
+//					for (LinearRing lr : p.getInnerRings()) {
+//						for (Vertex v : lr.getVertices()) {
+//							allInnerRingVertices2.add(v); 
+//						}
+//					}
+//
+//				}
+//			}
+//		}
+//		System.out.println("\nInnerRingVertices List:" + allInnerRingVertices2); //new
+	
+//		// TODO: HashMap to show Ring and gmlId		
+//		Map<LinearRing, Set<Vertex>> test = new HashMap<>();
+
+		
+	}
+	
+}

.metadata/.plugins/org.eclipse.core.resources/.history/b7/30af50337eea0010125ad88dcc4485e5

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+import java.io.PrintStream;
+// TODO: Change Point-Init semantics to Double-Init
+/**
+ * Represents a 3D line segment defined by a start and end point.
+ * Useful for geometric computations like intersection tests,
+ * ray casting, or clipping against bounding volumes such as AABBs.
+ */
+public class Line {
+    private Point start;
+    private Point end;
+
+    public Line() {
+        this.start = new Point();
+        this.end = new Point();
+    }
+ 
+    public Line(Point start, Point end) {
+        this.start = start;
+        this.end = end;
+    }
+
+    public Point getStart() {
+        return start;
+    }
+
+    public Point getEnd() {
+        return end;
+    }
+
+    // Calculates Bounding Box for this Line
+    public AABB getAABB() {
+    	// return new AABB(start, end)
+        return new AABB(start.getX(),start.getY(),start.getZ(), end.getX(), end.getY(), end.getZ());
+    }
+
+    /*
+     * calculates the square of length of the line
+     * to avoid squarerooth-operation
+     * */  
+    public double getLengthSquared() {
+        double dx = end.getX() - start.getX();
+        double dy = end.getY() - start.getY();
+        double dz = end.getZ() - start.getZ();
+        return dx * dx + dy * dy + dz * dz;
+    }
+
+    // Direction vector
+    public Point getDir() {
+        return new Point(
+            end.getX() - start.getX(),
+            end.getY() - start.getY(),
+            end.getZ() - start.getZ()
+        );
+    }
+
+    // Normal vector
+    public Point getNormDir() {
+        double length = Math.sqrt(getLengthSquared());
+        if (length == 0) {
+            return new Point(0, 0, 0);
+        }
+        return new Point(
+            (end.getX() - start.getX()) / length,
+            (end.getY() - start.getY()) / length,
+            (end.getZ() - start.getZ()) / length
+        );
+    }
+
+    public void print() {
+        System.out.println("Line from " + start + " to " + end);
+    }
+
+}

.metadata/.plugins/org.eclipse.core.resources/.history/bc/305422177eea0010125ad88dcc4485e5

+package de.hft.stuttgart.citydoctor2.checks.bht;
+
+
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import java.util.Arrays;
+import java.util.List;
+
+//import de.hft.stuttgart.citydoctor2.checks.geometry.*;
+//import de.hft.stuttgart.citydoctor2.checks.aabb.*; //<-evtl *geomCheks hier verlagern
+import de.hft.stuttgart.citydoctor2.datastructure.*;
+
+/**
+ * Manual test runner for basic geometry checks with AABB involvement.
+ * Without JUnit: prints results directly to the console.
+ */
+public class GeometryChecksWithAABBTest {
+
+    public static void main(String[] args) {
+        System.out.println("=== Geometry Checks with AABB – Manual Test Runner ===");
+
+        //testTooFewPoints();
+        testNestedRings();
+        testRingSelfIntersection();
+        testSolidSelfIntersection();
+
+        System.out.println("\n=== Test run finished ===");
+    }
+
+    
+    // --------------------------------------------------------------
+    // NestedRingsCheck
+    // --------------------------------------------------------------
+    private static void testNestedRings() {
+        System.out.println("\n[TEST] NestedRingsCheck");
+
+        // outer ring
+        LinearRing outer = new LinearRing(LinearRing.LinearRingType.EXTERIOR);
+        outer.addAllVertices(Arrays.asList(
+            new Vertex(0,0,0),
+            new Vertex(1,0,0),
+            new Vertex(1,1,0),
+            new Vertex(0,1,0),
+            new Vertex(0,0,0)
+        ));
+
+        ConcretePolygon p = new ConcretePolygon();
+        p.setExteriorRing(outer);
+
+        // inner ring 1
+        LinearRing inner1 = new LinearRing(LinearRing.LinearRingType.INTERIOR);
+        inner1.addAllVertices(Arrays.asList(
+            new Vertex(0.2,0.2,0),
+            new Vertex(0.8,0.2,0),
+            new Vertex(0.8,0.8,0),
+            new Vertex(0.2,0.8,0),
+            new Vertex(0.2,0.2,0)
+        ));
+
+        // inner ring 2 inside inner ring 1
+        LinearRing inner2 = new LinearRing(LinearRing.LinearRingType.INTERIOR);
+        inner2.addAllVertices(Arrays.asList(
+            new Vertex(0.4,0.4,0),
+            new Vertex(0.6,0.4,0),
+            new Vertex(0.6,0.6,0),
+            new Vertex(0.4,0.6,0),
+            new Vertex(0.4,0.4,0)
+        ));
+
+        p.addInteriorRing(inner1);
+        p.addInteriorRing(inner2);
+
+        NestedRingsCheckAABB check = new NestedRingsCheckAABB();
+        check.check(p);
+
+        System.out.println(" - Should detect nested rings: " + p.containsAnyError());
+    }
+
+    // --------------------------------------------------------------
+    // RingSelfIntCheck
+    // --------------------------------------------------------------
+    private static void testRingSelfIntersection() {
+        System.out.println("\n[TEST] RingSelfIntCheck");
+
+        LinearRing ring = new LinearRing(LinearRing.LinearRingType.EXTERIOR);
+        ring.addAllVertices(Arrays.asList(
+            new Vertex(0,0,0),
+            new Vertex(1,1,0),
+            new Vertex(1,0,0),
+            new Vertex(0,1,0),
+            new Vertex(0,0,0)
+        ));
+
+        ConcretePolygon p = new ConcretePolygon();
+        p.setExteriorRing(ring);
+
+        Geometry g = new Geometry(GeometryType.SOLID, Lod.LOD2);
+        g.addPolygon(p);   // ensures parent links exist
+        
+        g.updateEdgesAndVertices();
+
+        RingSelfIntCheckAABB check = new RingSelfIntCheckAABB();
+        check.check(ring);
+
+        System.out.println(" - Should detect self-intersection: " + ring.containsAnyError());
+    }
+
+    // --------------------------------------------------------------
+    // SolidSelfIntCheck
+    // --------------------------------------------------------------
+    private static void testSolidSelfIntersection() {
+        System.out.println("\n[TEST] SolidSelfIntCheck");
+
+        // first triangle
+        ConcretePolygon p1 = new ConcretePolygon();
+        LinearRing r1 = new LinearRing(LinearRing.LinearRingType.EXTERIOR);
+        r1.addAllVertices(Arrays.asList(
+            new Vertex(0,0,0),
+            new Vertex(1,0,0),
+            new Vertex(1,1,0),
+            new Vertex(0,0,0)
+        ));
+        p1.setExteriorRing(r1);
+
+        // second triangle overlapping the first
+        ConcretePolygon p2 = new ConcretePolygon();
+        LinearRing r2 = new LinearRing(LinearRing.LinearRingType.EXTERIOR);
+        r2.addAllVertices(Arrays.asList(
+            new Vertex(0,0,0),
+            new Vertex(1,1,0),
+            new Vertex(0,1,0),
+            new Vertex(0,0,0)
+        ));
+        p2.setExteriorRing(r2);
+
+        Geometry solid = new Geometry(GeometryType.SOLID, Lod.LOD2);
+        solid.getPolygons().addAll(List.of(p1, p2));
+
+        SolidSelfIntCheckAABB check = new SolidSelfIntCheckAABB();
+        check.check(solid);
+
+        System.out.println(" - Should detect solid self-intersection: " + solid.containsAnyError());
+    }
+}

.metadata/.plugins/org.eclipse.core.resources/.history/bc/906d2f05d5e700101110d31642d3da88

+package de.hft.stuttgart.citydoctor2.checks.bht;
+
+import de.hft.stuttgart.citydoctor2.healer.aabb.bht.*;
+import de.hft.stuttgart.citydoctor2.datastructure.*;
+import de.hft.stuttgart.citydoctor2.parser.*;
+import de.hft.stuttgart.citydoctor2.check.*;
+
+import java.io.IOException;
+import java.util.*;
+
+//src/test/java/.../TestCityGmlAABB.java
+import java.net.URL;
+import java.nio.file.Paths;
+
+
+public class TestCityGmlAABB {
+
+    public static void main(String[] args) throws CityGmlParseException, IOException, InvalidGmlFileException {
+        
+    	
+    	
+    	
+    	System.out.println("=== CityGML AABB Test ===");
+
+        // --- 1) Ask user which test case to run ---
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter TestCase ID (e.g. PO_TWO_INNERS, SO_WRONG_POLY_ORIENTATION_SINGLE) "
+                + "or press Enter for default: ");
+                String id = sc.nextLine().trim();
+        
+                
+	     // Default wählen 
+	     String resourcePath = TestPaths.PO_TWO_INNERS;
+	
+	     if (!id.isEmpty()) {
+	         try {
+	             // Holt  TestPaths per Reflection
+	             resourcePath = (String) TestPaths.class.getField(id).get(null);
+	         } catch (ReflectiveOperationException ex) {
+	             System.out.println("Unknown testcase: " + id + " (using default)");
+	         }
+	     }
+     
+
+
+	     String filePathForParser = resolveResourceOnClasspath(resourcePath);
+	     System.out.println("Using file: " + filePathForParser);
+	
+	 
+        
+     // --- 2) Load CityGML model ---
+	    ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
+	    // TODO: Study class model
+	    CityDoctorModel model = de.hft.stuttgart.citydoctor2.healing.TestUtil.loadCityModel(filePathForParser, config);
+        System.out.println("Model loaded successfully.\n");
+
+        List<Building> buildings = model.getBuildings();
+
+     // --- 3) Menu: choose granularity ---
+        System.out.println("\nChoose granularity:");
+        System.out.println("  1) Polygon-level (broad-phase)");
+        System.out.println("  2) Ring-level (EXTERIOR)");
+        System.out.println("  3) Ring-level (INTERIOR)");
+        System.out.println("  4) Vertex-level (fine-phase)");
+        System.out.println("  5) All of the above");
+        System.out.print("Your choice [1-5]: ");
+        int choice = readChoice(sc, 1, 5);
+
+        boolean doPolygon = (choice == 1 || choice == 5);
+        boolean doExtRing = (choice == 2 || choice == 5);
+        boolean doIntRing = (choice == 3 || choice == 5);
+        boolean doVertex  = (choice == 4 || choice == 5);
+
+        // --- 4) Run the selected modes ---
+        if (doPolygon) runPolygonMode(buildings);
+        if (doExtRing) runRingMode(buildings, true);
+        if (doIntRing) runRingMode(buildings, false);
+        if (doVertex)  runVertexMode(buildings);
+
+        System.out.println("\n=== Done ===");
+    }
+
+    // ---------- Modes ----------
+
+    private static void runPolygonMode(List<Building> buildings) {
+        System.out.println("\n> Polygon-level AABB (broad-phase)");
+        Set<ConcretePolygon> polys = collectAllPolygons(buildings);
+
+        AABBTree<ConcretePolygon> bvh = new AABBTree<>(
+            new ArrayList<>(polys),
+            AABBUtils::getAABB
+        );
+
+        System.out.println("Polygons: " + polys.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runRingMode(List<Building> buildings, boolean exterior) {
+        String label = exterior ? "EXTERIOR" : "INTERIOR";
+        System.out.println("\n> Ring-level AABB (" + label + ")");
+
+        Set<LinearRing> rings = exterior
+                ? collectExteriorRings(buildings)
+                : collectInteriorRings(buildings);
+
+        AABBTree<LinearRing> bvh = new AABBTree<>(
+            new ArrayList<>(rings),
+            AABBUtils::computeAABBFromRing
+        );
+
+        System.out.println(label + " rings: " + rings.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runVertexMode(List<Building> buildings) {
+        System.out.println("\n> Vertex-level AABB (fine-phase)");
+        Set<Vertex> verts = collectAllVertices(buildings);
+
+        AABBTree<Vertex> bvh = new AABBTree<>(
+            new ArrayList<>(verts),
+            AABBUtils::computeAABBFromVertex
+        );
+
+        System.out.println("Vertices: " + verts.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    // ---------- Collectors ----------
+
+    /** Collects all ConcretePolygons (unique) via visitor. */
+    private static Set<ConcretePolygon> collectAllPolygons(List<Building> buildings) {
+        Set<ConcretePolygon> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    set.add(poly.getOriginal());
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all EXTERIOR rings (unique). */
+    private static Set<LinearRing> collectExteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    LinearRing ext = poly.getOriginal().getExteriorRing();
+                    if (ext != null) set.add(ext);
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all INTERIOR rings (unique). */
+    private static Set<LinearRing> collectInteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    List<LinearRing> inner = poly.getOriginal().getInnerRings();
+                    if (inner != null && !inner.isEmpty()) {
+                        set.addAll(inner);
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all vertices (unique) from both exterior and interior rings. */
+    private static Set<Vertex> collectAllVertices(List<Building> buildings) {
+        Set<Vertex> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    ConcretePolygon cp = poly.getOriginal();
+                    LinearRing ext = cp.getExteriorRing();
+                    if (ext != null) set.addAll(ext.getVertices());
+                    List<LinearRing> inner = cp.getInnerRings();
+                    if (inner != null) {
+                        for (LinearRing lr : inner) set.addAll(lr.getVertices());
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    // ---------- Utils ----------    
+    /* Helper method reads choice of the user */
+    private static int readChoice(Scanner sc, int min, int max) {
+        while (true) {
+            String s = sc.nextLine().trim();
+            try {
+                int v = Integer.parseInt(s);
+                if (v >= min && v <= max) return v;
+            } catch (NumberFormatException ignored) {}
+            System.out.print("Please enter a number between " + min + " and " + max + ": ");
+        }
+    }
+    
+ /* Helper method Pathfinder */
+    private static String resolveResourceOnClasspath(String resourcePath) {
+        String rp = normalizeResourcePath(resourcePath);
+
+        // 1) Klassenpfad via Class.getResource
+        URL url = TestCityGmlAABB.class.getResource(rp);
+
+        // 2) Klassenpfad via Context-ClassLoader: 
+        if (url == null) {
+            ClassLoader cl = Thread.currentThread().getContextClassLoader();
+            String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+            url = cl.getResource(noSlash);
+        }
+
+        // 3) Wenn gefunden: in Pfad umwandeln
+        if (url != null) {
+            try {
+                return Paths.get(url.toURI()).toString();
+            } catch (Exception e) {
+                throw new RuntimeException("Konnte Resource-URI nicht auflösen: " + url, e);
+            }
+        }
+
+        // 4) Fallbacks: Projekt-relative Kandidaten prüfen
+        String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+        String[] candidates = {
+            "src/test/resources/" + noSlash,
+            "src/main/resources/" + noSlash,
+            resourcePath // falls bereits ein echter Dateipfad übergeben wurde
+        };
+        for (String cand : candidates) {
+            java.nio.file.Path p = java.nio.file.Paths.get(cand);
+            if (java.nio.file.Files.exists(p)) {
+                return p.toAbsolutePath().toString();
+            }
+        }
+
+        throw new IllegalArgumentException(
+            "Resource nicht im Klassenpfad gefunden: " + resourcePath + " (versucht als: " + rp + ")"
+        );
+    }
+
+    // FÜR ALLE FÄLLE zur Zeit REDUNDAD
+    private static String normalizeResourcePath(String path) { 
+        String p = path.replace('\\', '/');
+        // Quellordner-Präfixe entfernen, falls mit übergeben
+        if (p.startsWith("src/test/resources/")) {
+            p = p.substring("src/test/resources/".length());
+        } else if (p.startsWith("src/main/resources/")) {
+            p = p.substring("src/main/resources/".length());
+        }
+        // Für Class.getResource: führenden Slash setzen
+        if (!p.startsWith("/")) p = "/" + p;
+        return p;
+    }
+
+}
+
+
+

.metadata/.plugins/org.eclipse.core.resources/.history/c/70da4f49f1e700101110d31642d3da88

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+import de.hft.stuttgart.citydoctor2.checks.aabb.*;
+import java.io.IOException;
+import java.util.*;
+
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.parser.CityGmlParseException;
+import de.hft.stuttgart.citydoctor2.parser.InvalidGmlFileException;
+
+
+
+public class TestHouseAABB {
+
+    public static void main(String[] args) throws CityGmlParseException, IOException, InvalidGmlFileException {
+        System.out.println("===TestHouseAABB===");
+     /*
+      * 3D House of St.Niclas
+      * 
+      * */   
+     // Haus-Basis: Würfelgröße 2x2x2, Dachhöhe +1
+        double baseSize = 2.0;
+        double height = 2.0;
+        double roofHeight = 1.0;
+
+        // Bodenpunkte (unten)
+        Point b1 = new Point(0, 0, 0);
+        Point b2 = new Point(baseSize, 0, 0);
+        Point b3 = new Point(baseSize, baseSize, 0);
+        Point b4 = new Point(0, baseSize, 0);
+
+        // Deckpunkte (oben)
+        Point t1 = new Point(0, 0, height);
+        Point t2 = new Point(baseSize, 0, height);
+        Point t3 = new Point(baseSize, baseSize, height);
+        Point t4 = new Point(0, baseSize, height);
+
+        // Dachspitze (Prisma in Mitte der oberen Fläche)
+        Point roofPeak1 = new Point(baseSize/2, -0.2, height + roofHeight); // vorne
+        Point roofPeak2 = new Point(baseSize/2, baseSize + 0.2, height + roofHeight); // hinten
+
+        List<ConcretePolygon> house = new ArrayList<>();
+
+        // Boden (b1,b2,b3,b4)
+        house.add(createQuadPolygon(b1, b2, b3, b4));
+
+        // Wände
+        house.add(createQuadPolygon(b1, b2, t2, t1)); // vorne
+        house.add(createQuadPolygon(b2, b3, t3, t2)); // rechts
+        house.add(createQuadPolygon(b3, b4, t4, t3)); // hinten
+        house.add(createQuadPolygon(b4, b1, t1, t4)); // links
+
+        // Decke unter Dach
+        house.add(createQuadPolygon(t1, t2, t3, t4));
+
+        // Dach: zwei Dreiecksseiten (links/rechts)
+        house.add(createTrianglePolygon(t1, t2, roofPeak1));
+        house.add(createTrianglePolygon(t4, t3, roofPeak2));
+        // Dach: Vorder- und Rückfläche (Prisma)
+        house.add(createQuadPolygon(t2, t3, roofPeak2, roofPeak1));
+        house.add(createQuadPolygon(t1, t4, roofPeak2, roofPeak1));
+        
+        // 
+        AABB houseAABB = BVHStructures.getAggregateAABB(house);
+        houseAABB.print();
+
+        // Define test points PS wegen lesbarkeit als Liste von Koord. vorerst
+        double[] insidePoint = {1.0, 1.0, 1.0};    // clearly inside (center of the base cube)
+        double[] roofPoint = {1.0, 1.0, 2.8};      // inside roof area but near the top
+        double[] outsidePoint = {3.0, 3.0, 3.0};   // clearly outside
+        double[] edgePoint = {2.0, 2.0, 2.0};      // exactly on the upper cube corner
+
+        // Test containment
+        System.out.println("\nTest point (inside): " + Arrays.toString(insidePoint));
+        System.out.println("-> contained? " + houseAABB.encloses(insidePoint[0], insidePoint[1], insidePoint[2]));
+
+        System.out.println("\nTest point (on roof): " + Arrays.toString(roofPoint));
+        System.out.println("-> contained? " + houseAABB.encloses(roofPoint[0], roofPoint[1], roofPoint[2]));
+
+        System.out.println("\nTest point (outside): " + Arrays.toString(outsidePoint));
+        System.out.println("-> contained? " + houseAABB.encloses(outsidePoint[0], outsidePoint[1], outsidePoint[2]));
+
+        System.out.println("\nTest point (on edge): " + Arrays.toString(edgePoint));
+        System.out.println("-> contained? " + houseAABB.encloses(edgePoint[0], edgePoint[1], edgePoint[2]));
+
+    }
+
+    /** Creates a triangular polygon from three points */
+    private static ConcretePolygon createTrianglePolygon(Point p1, Point p2, Point p3) {
+        // alocate poly
+    	ConcretePolygon poly = new ConcretePolygon();
+        // alocate ring
+        LinearRing ring = new LinearRing(LinearRing.LinearRingType.EXTERIOR);
+        // vertices of triangle
+        ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+        ring.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+        ring.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+        ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ())); // Close ring
+        // 
+        poly.setExteriorRing(ring);
+        return poly;
+    }
+
+    /** Creates a quadrilateral polygon from four points */
+    private static ConcretePolygon createQuadPolygon(Point p1, Point p2, Point p3, Point p4) {
+        
+    	ConcretePolygon poly = new ConcretePolygon();
+        
+        LinearRing ring = new LinearRing(LinearRing.LinearRingType.EXTERIOR);
+        
+        ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+        ring.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+        ring.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+        ring.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+        ring.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ())); // Close ring
+        
+        poly.setExteriorRing(ring);
+        return poly;
+    }
+}

.metadata/.plugins/org.eclipse.core.resources/.history/c0/6091b0b52699001017e0d034282fa54d

+package de.hft.stuttgart.citydoctor2.healing.bht;
+
+
+
+/**
+ * Central collection of CityGML test file paths used for AABB / healing experiments.
+ * Files are located under {@code src/test/resources} or {@code src/test/resources/bht/}
+ * ACHTUNG: mit '!!!' markierte Objekte haben einen falschen Pfad
+ */
+public final class TestPaths {
+
+    private TestPaths() {
+        // utility class
+    }
+
+    // ==================================================
+    // Schematron / Validation tests
+    // ==================================================
+
+    /**!!! Not XSD valid, namespaces removed, for schematron experiments. */
+    public static final String SCHEMATRON =
+    		"CityDoctorParent/CityDoctorValidation/target/test-classes/SimpleSolid_SrefBS-Schematron-Test.gml";
+             //CityDoctorParent
+            //"src/test/resources/bht/SimpleSolid_SrefBS-Schematron-Test.gml";
+
+
+    // ==================================================
+    // LinearRing (LR) test cases
+    // ==================================================
+
+    /**1 LinearRing has only 2 points. */
+    public static final String LR_2POINTS =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0001-T0001.gml";
+    
+    /**2 LinearRing has 3 points but is not closed. */
+    public static final String LR_NOTCLOSED =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0001-T0002.gml";
+
+    /**3 LinearRing has consecutive duplicate vertices. */
+    public static final String LR_DUPLICATE_CONSEC =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0002-T0001.gml";
+
+    /**4 LinearRing has non-consecutive duplicate vertices. */
+    public static final String LR_DUPLICATE_NONCONSEC =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0002-T0002.gml";
+
+    /**added 5 LinearRing points form a straight line. */
+    public static final String LR_LINE =
+        "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0003.gml";
+
+    /**added 6 LinearRing has consecutive points closer than 0.1. */
+    public static final String LR_TOO_CLOSE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0004.gml";
+
+    /**added 7 LinearRing has too few points and duplicate points. */
+    public static final String LR_TOO_FEW_DUP =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0002-T0005.gml";
+
+    /**8 LinearRing is not closed. */
+    public static final String LR_NOTCLOSED_2 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0003-T0001.gml";
+
+    /**added 9 LinearRing is closed but with point distance < 0.1. */
+    public static final String LR_CLOSED_SMALLDIST =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-LR-0003-T0002.gml";
+
+    /**10 LinearRing has a loop. */
+    public static final String LR_LOOP =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0004-T0004.gml";
+
+    /** 11 LinearRing point touches edge with distance < 0.1. */
+    public static final String LR_TOUCH_EDGE =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-LR-0004-T0005.gml";
+
+
+    // ==================================================
+    // Polygon (PO) test cases
+    // ==================================================
+
+    /**12 Inner ring intersects outer ring. */
+    public static final String PO_INTERSECT_OUTER =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0001.gml";
+
+    /**13 Polygon has 2 inner rings. */
+    public static final String PO_TWO_INNERS =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0002.gml";
+
+    /**14 Polygon has 2 intersecting inner rings. */
+    public static final String PO_INNER_INTERSECT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0001-T0003.gml";
+
+    /**15 Polygon has 2 inner rings; one vertex too far from the plane. */
+    public static final String PO_INNER_OFF_PLANE =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-PO-0002-T0001.gml";
+
+    /**added 16 Polygon has normal deviation error. */
+    public static final String PO_NORMAL_ERROR =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0002-T0002.gml";
+
+    /**17 Polygon has disconnected interior surface. */
+    public static final String PO_DISCONNECTED_INTERIOR_1 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0003-T0001.gml";
+
+    /**added 18 Polygon has disconnected interior surface due to two inner rings. */
+    public static final String PO_DISCONNECTED_INTERIOR_2 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0003-T0002.gml";
+
+    /** added 19 Inner ring completely outside the outer ring. */
+    public static final String PO_INNER_OUTSIDE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0004-T0001.gml";
+
+    /**added 20 Inner ring completely inside another inner ring. */
+    public static final String PO_INNER_INSIDE_ANOTHER =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-PO-0005-T0001.gml";
+
+    /**21 Two inner rings with wrong orientation. */
+    public static final String PO_TWO_INNERS_WRONG_ORIENT =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-PO-0006-T0001.gml";
+
+
+    // ==================================================
+    // Solid (SO) test cases
+    // ==================================================
+
+    /**added 22 Solid consists of only 3 polygons. */
+    public static final String SO_TOO_FEW_POLYGONS =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0001-T0001.gml";
+
+    /**added 23 Shell is not watertight. */
+    public static final String SO_NOT_WATERTIGHT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0002-T0001.gml";
+    /** 24 Two buildings connected only by a single point. */
+    public static final String SO_CONNECTED_BY_POINT =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0003-T0001.gml";
+
+    /**25 Roof point slightly deviates (e.g., 10.0 14.95 2.95 vs 10.0 15.0 3.0). */
+    public static final String SO_ROOF_COORD_DEVIATION_1 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0004-T0001.gml";
+
+    /**25 Missing polygon. */
+    public static final String SO_MISSING_POLYGON =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0004-T0002.gml";
+
+    /** LOST! 26 Slight coordinate deviations on multiple roof polygons (CityGML 2.0 only). */
+    public static final String SO_ROOF_COORD_DEVIATION_2 =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0004-T0003.gml";
+
+    /**added 27 Solid geometry actually contains two buildings. */
+    public static final String SO_TWO_BUILDINGS_IN_ONE =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0005-T0001.gml";
+
+    // Falsches Datei !!!!    
+    /**!!! 28 Self-intersecting geometry.  */
+    public static final String SO_SELF_INTERSECTING =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0003-T0001.gml";
+
+    // ACHTUNG FALSCHES LABEL 
+    /**29 Polygon with wrong orientation.  */
+    public static final String ENTER_LABEL1 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0001.gml";
+
+    /**30 Polygon with wrong orientation. ACHTUNG FALSCHES LABEL */
+    public static final String ENTER_LABEL2 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0002.gml";
+
+    /**31 Polygon with wrong orientation. ACHTUNG FALSCHES LABEL */
+    public static final String ENTER_LABEL3 =
+            "src/test/resources/SimpleSolid_SrefBS-GE-gml-SO-0007-T0003.gml";
+    //
+    
+    /** LOST! 33 All polygons have wrong orientation. */
+    public static final String SO_WRONG_POLY_ORIENTATION_ALL =
+            "src/test/resources/bht/SimpleSolid_SrefBS-GE-gml-SO-0008-T0001.gml";
+}

.metadata/.plugins/org.eclipse.core.resources/.history/c1/7096723af4e700101110d31642d3da88

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+
+import java.util.*;
+
+import de.hft.stuttgart.citydoctor2.checks.aabb.AABB;
+import de.hft.stuttgart.citydoctor2.checks.aabb.BVHStructures;
+import de.hft.stuttgart.citydoctor2.checks.aabb.Point;
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing.LinearRingType;
+
+
+public class TestDummyAABB {
+	/**
+	 * Entry point for AABB testing
+	 */
+	public static void main(String[] args) {
+	    System.out.println("=== AABB TEST ===");
+
+	    ConcretePolygon polygon = new ConcretePolygon();
+	    LinearRing exterior = new LinearRing(LinearRingType.EXTERIOR);
+
+	    exterior.addVertex(new Vertex(0, 0, 0));
+	    exterior.addVertex(new Vertex(1, 0, 0));
+	    exterior.addVertex(new Vertex(0, 1, 0));
+	    exterior.addVertex(new Vertex(0, 0, 0));
+
+	    polygon.setExteriorRing(exterior);
+
+	    // Define points of a tetrahedron
+	    Point p1 = new Point(0, 0, 0);
+	    Point p2 = new Point(1, 0, 0);
+	    Point p3 = new Point(0.5, 1, 0);
+	    Point p4 = new Point(0.5, 0.5, 1);
+
+	    // Define triangle faces of the tetrahedron
+	    ConcretePolygon base = new ConcretePolygon();
+	    LinearRing baseRing = new LinearRing(LinearRingType.EXTERIOR);
+	    baseRing.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    baseRing.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    baseRing.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    baseRing.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    base.setExteriorRing(baseRing);
+
+	    ConcretePolygon side1 = new ConcretePolygon();
+	    LinearRing ring1 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring1.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring1.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring1.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring1.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    side1.setExteriorRing(ring1);
+
+	    ConcretePolygon side2 = new ConcretePolygon();
+	    LinearRing ring2 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring2.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    ring2.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring2.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring2.addVertex(new Vertex(p2.getX(), p2.getY(), p2.getZ()));
+	    side2.setExteriorRing(ring2);
+
+	    ConcretePolygon side3 = new ConcretePolygon();
+	    LinearRing ring3 = new LinearRing(LinearRingType.EXTERIOR);
+	    ring3.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    ring3.addVertex(new Vertex(p1.getX(), p1.getY(), p1.getZ()));
+	    ring3.addVertex(new Vertex(p4.getX(), p4.getY(), p4.getZ()));
+	    ring3.addVertex(new Vertex(p3.getX(), p3.getY(), p3.getZ()));
+	    side3.setExteriorRing(ring3);
+
+	    List<ConcretePolygon> poly = Arrays.asList(base, side1, side2, side3);
+
+	    AABB aabb = BVHStructures.getAggregateAABB(poly);
+	    System.out.println("\nComputed AABB:");
+	    aabb.print();
+        
+	    /*** 3D-Point-coords with Test Properties  ***/ 
+	    // Inside laying Point
+	    double testInsideX = 0.5; 
+	    double testInsideY = 0.5;
+	    double testInsideZ = 0.3;
+	    // Outside laying Point
+	    double testOutsideX = 2.0; 
+	    double testOutsideY = 2.0;
+	    double testOutsideZ = 2.0;
+	    // On edge laying Point
+	    double testOnEdgeX = 1.0;
+	    double testOnEdgeY = 1.0;
+	    double testOnEdgeZ = 0.0;
+	    
+	    System.out.println("\nTest point (inside): " + testInsideX + " " + testInsideY + " " + testInsideZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testInsideX, testInsideY, testInsideZ));
+
+	    System.out.println("\nTest point (outside): " + testOutsideX + " " + testOutsideY + " " + testOutsideZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testOutsideX, testOutsideY, testOutsideZ));
+
+	    System.out.println("\nTest point (on edge): " + testOnEdgeX + " " + testOnEdgeY + " " + testOnEdgeZ);
+	    System.out.println("-> contained?: " + aabb.encloses(testOnEdgeX, testOnEdgeY, testOnEdgeZ));
+	}
+	}

.metadata/.plugins/org.eclipse.core.resources/.history/c3/f0ac3dad7cea0010125ad88dcc4485e5

+package de.hft.stuttgart.citydoctor2.datastructure.bht;
+import de.hft.stuttgart.citydoctor2.datastructure.ConcretePolygon;
+//import de.hft.stuttgart.citydoctor2.datastructure.Edge;
+import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
+import de.hft.stuttgart.citydoctor2.datastructure.Vertex;
+import de.hft.stuttgart.citydoctor2.math.Vector3d;
+
+import java.util.*;
+
+//import java.util.List;
+
+
+/**
+ * @author Baris Numanoglu
+ * 
+ * Utility class providing AABB-related helper methods.
+ * 
+ * Contains functionality for computing axis-aligned bounding boxes (AABBs)
+ * from geometric data structures such as {@link ConcretePolygon} or {@link LinearRing}.
+ * 
+ * All methods are static.
+ */
+	public class AABBUtils {
+
+    public static AABB getAABB(ConcretePolygon poly) {
+        LinearRing ring = poly.getExteriorRing();
+        if (ring == null) return null;
+        return computeAABBFromRing(ring);
+    }
+    
+    /**
+     * Computes an AABB from a LinearRing by iterating over its vertices.
+     *
+     * @param ring the LinearRing whose vertices define the AABB
+     * @return AABB enclosing the ring; returns an empty AABB if the ring has no vertices
+     */
+    public static AABB computeAABBFromRing(LinearRing ring) {
+        if (ring == null || ring.getVertices() == null || ring.getVertices().isEmpty()) {
+            return new AABB(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
+                            Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
+        }
+
+        double minX = Double.POSITIVE_INFINITY;
+        double minY = Double.POSITIVE_INFINITY;
+        double minZ = Double.POSITIVE_INFINITY;
+        double maxX = Double.NEGATIVE_INFINITY;
+        double maxY = Double.NEGATIVE_INFINITY;
+        double maxZ = Double.NEGATIVE_INFINITY;
+
+        for (Vertex v : ring.getVertices()) {
+            double x = v.getX();
+            double y = v.getY();
+            double z = v.getZ();
+
+            minX = Math.min(minX, x);
+            minY = Math.min(minY, y);
+            minZ = Math.min(minZ, z);
+            maxX = Math.max(maxX, x);
+            maxY = Math.max(maxY, y);
+            maxZ = Math.max(maxZ, z);
+        }
+
+        return new AABB(minX, minY, minZ, maxX, maxY, maxZ);
+    }    
+    /**
+     * PREMORDIAL: substitutes the earlier semantic of AABB-Point-Init. 
+     * Computes the min and max bounds (6 doubles) from two points.
+     * 
+     * @param p1 the first point
+     * @param p2 the second point
+     * @return an array of 6 doubles: [minX, minY, minZ, maxX, maxY, maxZ]
+     */
+    public static double[] extractBoundsFromPoints(Point p1, Point p2) {
+        double minX = Math.min(p1.getX(), p2.getX());
+        double minY = Math.min(p1.getY(), p2.getY());
+        double minZ = Math.min(p1.getZ(), p2.getZ());
+        double maxX = Math.max(p1.getX(), p2.getX());
+        double maxY = Math.max(p1.getY(), p2.getY());
+        double maxZ = Math.max(p1.getZ(), p2.getZ());
+
+        return new double[] { minX, minY, minZ, maxX, maxY, maxZ };
+    }
+    
+    // NOTE: May replaced later: double[] extractBoundsFromPoints(List<? extends Point> points)??
+    public static AABB aabbFromVector3d(List<? extends Vector3d> points) {
+        double minX = Double.POSITIVE_INFINITY, minY = Double.POSITIVE_INFINITY, minZ = Double.POSITIVE_INFINITY;
+        double maxX = Double.NEGATIVE_INFINITY, maxY = Double.NEGATIVE_INFINITY, maxZ = Double.NEGATIVE_INFINITY;
+
+        for (Vector3d p : points) {
+            minX = Math.min(minX, p.getX());
+            minY = Math.min(minY, p.getY());
+            minZ = Math.min(minZ, p.getZ());
+            maxX = Math.max(maxX, p.getX());
+            maxY = Math.max(maxY, p.getY());
+            maxZ = Math.max(maxZ, p.getZ());
+        }
+        return new AABB(minX, minY, minZ, maxX, maxY, maxZ);
+    }
+
+    /**
+     * Computes an AABB for a single vertex (degenerate AABB with min=max=vertex coordinates).
+     *
+     * @param vertex the vertex to wrap in an AABB
+     * @return AABB centered at the vertex position
+     */
+    public static AABB computeAABBFromVertex(Vertex vertex) {
+        if (vertex == null) {
+            // Return a degenerate AABB with infinite bounds if vertex is null
+            return new AABB(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
+                            Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
+        }
+
+        double x = vertex.getX();
+        double y = vertex.getY();
+        double z = vertex.getZ();
+
+        // AABB is degenerate here: min=max=(x,y,z)
+        return new AABB(x, y, z, x, y, z);
+    }
+    
+    /** Returns true if the AABB is (nearly) flat in at least two axes. */
+    public static boolean isDegenerate(AABB aabb, double tol) {
+        double dx = aabb.getMaxX() - aabb.getMinX();
+        double dy = aabb.getMaxY() - aabb.getMinY();
+        double dz = aabb.getMaxZ() - aabb.getMinZ();
+        int flatAxes = 0;
+        if (dx <= tol) flatAxes++;
+        if (dy <= tol) flatAxes++;
+        if (dz <= tol) flatAxes++;
+        return flatAxes >= 2; // cannot host 3 distinct points in 3D
+    }
+
+    /**
+     * Counts distinct vertices of a ring using a tolerance.
+     * Implementation: uniform quantization (grid hashing) for speed and determinism.
+     */
+    public static int countDistinctVertices(LinearRing ring, double tol) {
+        if (ring == null || ring.getVertices() == null) return 0;
+        // Use a quantization resolution based on tol (avoid div by zero).
+        final double q = (tol > 0) ? tol : 1e-9;
+
+        // Hash set of quantized integer triplets "ix|iy|iz"
+        Set<Long> buckets = new HashSet<>(ring.getVertices().size() * 2);
+        for (Vertex v : ring.getVertices()) {
+            long ix = Math.round(v.getX() / q);
+            long iy = Math.round(v.getY() / q);
+            long iz = Math.round(v.getZ() / q);
+            // pack into a 64-bit key (simple mixing; safe if ranges are reasonable)
+            long key = mix3(ix, iy, iz);
+            buckets.add(key);
+        }
+        return buckets.size();
+    }
+ 
+    // Simple 3D integer mix to a 64-bit key (Xorshift-ish) from JavaDoc
+    private static long mix3(long x, long y, long z) {
+        long h = x * 73856093L ^ y * 19349663L ^ z * 83492791L;
+        // final avalanche
+        h ^= (h >>> 33);
+        h *= 0xff51afd7ed558ccdL;
+        h ^= (h >>> 33);
+        h *= 0xc4ceb9fe1a85ec53L;
+        h ^= (h >>> 33);
+        return h;
+    }
+    
+ 	/** Returns true if 'outer' fully contains 'inner' (inclusive) in axis-aligned sense. */
+ 	public static boolean containsAabb(AABB outer, AABB inner) {
+ 		return outer.getMinX() <= inner.getMinX()
+ 			&& outer.getMinY() <= inner.getMinY()
+ 			&& outer.getMinZ() <= inner.getMinZ()
+ 			&& outer.getMaxX() >= inner.getMaxX()
+ 			&& outer.getMaxY() >= inner.getMaxY()
+ 			&& outer.getMaxZ() >= inner.getMaxZ();
+ 	}
+ 	
+
+	/** Builds a padded AABB around a segment (two vertices). */
+	public static AABB edgeAabb(Vertex a, Vertex b, double pad) {
+		double minX = Math.min(a.getX(), b.getX()) - pad;
+		double minY = Math.min(a.getY(), b.getY()) - pad;
+		double minZ = Math.min(a.getZ(), b.getZ()) - pad;
+		double maxX = Math.max(a.getX(), b.getX()) + pad;
+		double maxY = Math.max(a.getY(), b.getY()) + pad;
+		double maxZ = Math.max(a.getZ(), b.getZ()) + pad;
+		return new AABB(minX, minY, minZ, maxX, maxY, maxZ);
+	}
+
+	/** Returns true if two AABBs overlap (inclusive). */
+	public static boolean overlaps(AABB a, AABB b) {
+		return !(a.getMaxX() < b.getMinX() ||
+				 a.getMinX() > b.getMaxX() ||
+				 a.getMaxY() < b.getMinY() ||
+				 a.getMinY() > b.getMaxY() ||
+				 a.getMaxZ() < b.getMinZ() ||
+				 a.getMinZ() > b.getMaxZ());
+	}
+}

.metadata/.plugins/org.eclipse.core.resources/.history/c8/7080726371e900101245d5e14ea95888

+package de.hft.stuttgart.citydoctor2.healing.bht;
+
+
+import de.hft.stuttgart.citydoctor2.datastructure.bht.*;
+import de.hft.stuttgart.citydoctor2.datastructure.*;
+import de.hft.stuttgart.citydoctor2.parser.*;
+import de.hft.stuttgart.citydoctor2.systemtest.TestUtil;
+import de.hft.stuttgart.citydoctor2.check.*;
+
+//import de.hft.stuttgart.citydoctor2.healing.*;
+
+import java.io.IOException;
+import java.util.*;
+
+//src/test/java/.../TestCityGmlAABB.java
+import java.net.URL;
+import java.nio.file.Paths;
+
+
+public class TestCityGmlAABB {
+
+    public static void main(String[] args) throws CityGmlParseException, IOException, InvalidGmlFileException {
+        
+    	
+    	
+    	
+    	System.out.println("=== CityGML AABB Test ===");
+
+        // --- 1) Ask user which test case to run ---
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter TestCase ID (e.g. PO_TWO_INNERS, SO_WRONG_POLY_ORIENTATION_SINGLE) "
+                + "or press Enter for default: ");
+                String id = sc.nextLine().trim();
+        
+                
+	     // Default wählen 
+	     String resourcePath = TestPaths.PO_TWO_INNERS;
+	
+	     if (!id.isEmpty()) {
+	         try {
+	             // Holt  TestPaths per Reflection
+	             resourcePath = (String) TestPaths.class.getField(id).get(null);
+	         } catch (ReflectiveOperationException ex) {
+	             System.out.println("Unknown testcase: " + id + " (using default)");
+	         }
+	     }
+     
+
+
+	     String filePathForParser = resolveResourceOnClasspath(resourcePath);
+	     System.out.println("Using file: " + filePathForParser);
+	
+	 
+        
+     // --- 2) Load CityGML model ---
+	    ValidationConfiguration config = ValidationConfiguration.loadStandardValidationConfig();
+	    // TODO: Study class model
+	    CityDoctorModel model = TestUtil.loadCityModel(filePathForParser, config);
+        System.out.println("Model loaded successfully.\n");
+
+        List<Building> buildings = model.getBuildings();
+
+     // --- 3) Menu: choose granularity ---
+        System.out.println("\nChoose granularity:");
+        System.out.println("  1) Polygon-level (broad-phase)");
+        System.out.println("  2) Ring-level (EXTERIOR)");
+        System.out.println("  3) Ring-level (INTERIOR)");
+        System.out.println("  4) Vertex-level (fine-phase)");
+        System.out.println("  5) All of the above");
+        System.out.print("Your choice [1-5]: ");
+        int choice = readChoice(sc, 1, 5);
+
+        boolean doPolygon = (choice == 1 || choice == 5);
+        boolean doExtRing = (choice == 2 || choice == 5);
+        boolean doIntRing = (choice == 3 || choice == 5);
+        boolean doVertex  = (choice == 4 || choice == 5);
+
+        // --- 4) Run the selected modes ---
+        if (doPolygon) runPolygonMode(buildings);
+        if (doExtRing) runRingMode(buildings, true);
+        if (doIntRing) runRingMode(buildings, false);
+        if (doVertex)  runVertexMode(buildings);
+
+        System.out.println("\n=== Done ===");
+    }
+
+    // ---------- Modes ----------
+
+    private static void runPolygonMode(List<Building> buildings) {
+        System.out.println("\n> Polygon-level AABB (broad-phase)");
+        Set<ConcretePolygon> polys = collectAllPolygons(buildings);
+
+        AABBTree<ConcretePolygon> bvh = new AABBTree<>(
+            new ArrayList<>(polys),
+            AABBUtils::getAABB
+        );
+
+        System.out.println("Polygons: " + polys.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runRingMode(List<Building> buildings, boolean exterior) {
+        String label = exterior ? "EXTERIOR" : "INTERIOR";
+        System.out.println("\n> Ring-level AABB (" + label + ")");
+
+        Set<LinearRing> rings = exterior
+                ? collectExteriorRings(buildings)
+                : collectInteriorRings(buildings);
+
+        AABBTree<LinearRing> bvh = new AABBTree<>(
+            new ArrayList<>(rings),
+            AABBUtils::computeAABBFromRing
+        );
+
+        System.out.println(label + " rings: " + rings.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    private static void runVertexMode(List<Building> buildings) {
+        System.out.println("\n> Vertex-level AABB (fine-phase)");
+        Set<Vertex> verts = collectAllVertices(buildings);
+
+        AABBTree<Vertex> bvh = new AABBTree<>(
+            new ArrayList<>(verts),
+            AABBUtils::computeAABBFromVertex
+        );
+
+        System.out.println("Vertices: " + verts.size());
+        if (bvh.getRoot() != null) {
+            System.out.print("Root AABB: ");
+            bvh.getRoot().aabb.print();
+        }
+    }
+
+    // ---------- Collectors ----------
+
+    /** Collects all ConcretePolygons (unique) via visitor. */
+    private static Set<ConcretePolygon> collectAllPolygons(List<Building> buildings) {
+        Set<ConcretePolygon> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    set.add(poly.getOriginal());
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all EXTERIOR rings (unique). */
+    private static Set<LinearRing> collectExteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    LinearRing ext = poly.getOriginal().getExteriorRing();
+                    if (ext != null) set.add(ext);
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all INTERIOR rings (unique). */
+    private static Set<LinearRing> collectInteriorRings(List<Building> buildings) {
+        Set<LinearRing> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    List<LinearRing> inner = poly.getOriginal().getInnerRings();
+                    if (inner != null && !inner.isEmpty()) {
+                        set.addAll(inner);
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    /** Collects all vertices (unique) from both exterior and interior rings. */
+    private static Set<Vertex> collectAllVertices(List<Building> buildings) {
+        Set<Vertex> set = new HashSet<>();
+        for (Building b : buildings) {
+            b.accept(new CheckableUtilsVisitor() {
+                @Override
+                public void check(Polygon poly) {
+                    ConcretePolygon cp = poly.getOriginal();
+                    LinearRing ext = cp.getExteriorRing();
+                    if (ext != null) set.addAll(ext.getVertices());
+                    List<LinearRing> inner = cp.getInnerRings();
+                    if (inner != null) {
+                        for (LinearRing lr : inner) set.addAll(lr.getVertices());
+                    }
+                }
+            });
+        }
+        return set;
+    }
+
+    // ---------- Utils ----------    
+    /* Helper method reads choice of the user */
+    private static int readChoice(Scanner sc, int min, int max) {
+        while (true) {
+            String s = sc.nextLine().trim();
+            try {
+                int v = Integer.parseInt(s);
+                if (v >= min && v <= max) return v;
+            } catch (NumberFormatException ignored) {}
+            System.out.print("Please enter a number between " + min + " and " + max + ": ");
+        }
+    }
+    
+ /* Helper method Pathfinder */
+    private static String resolveResourceOnClasspath(String resourcePath) {
+        String rp = normalizeResourcePath(resourcePath);
+
+        // 1) Klassenpfad via Class.getResource
+        URL url = TestCityGmlAABB.class.getResource(rp);
+
+        // 2) Klassenpfad via Context-ClassLoader: 
+        if (url == null) {
+            ClassLoader cl = Thread.currentThread().getContextClassLoader();
+            String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+            url = cl.getResource(noSlash);
+        }
+
+        // 3) Wenn gefunden: in Pfad umwandeln
+        if (url != null) {
+            try {
+                return Paths.get(url.toURI()).toString();
+            } catch (Exception e) {
+                throw new RuntimeException("Konnte Resource-URI nicht auflösen: " + url, e);
+            }
+        }
+
+        // 4) Fallbacks: Projekt-relative Kandidaten prüfen
+        String noSlash = rp.startsWith("/") ? rp.substring(1) : rp;
+        String[] candidates = {
+            "src/test/resources/" + noSlash,
+            "src/main/resources/" + noSlash,
+            resourcePath // falls bereits ein echter Dateipfad übergeben wurde
+        };
+        for (String cand : candidates) {
+            java.nio.file.Path p = java.nio.file.Paths.get(cand);
+            if (java.nio.file.Files.exists(p)) {
+                return p.toAbsolutePath().toString();
+            }
+        }
+
+        throw new IllegalArgumentException(
+            "Resource nicht im Klassenpfad gefunden: " + resourcePath + " (versucht als: " + rp + ")"
+        );
+    }
+
+    // FÜR ALLE FÄLLE zur Zeit REDUNDAD
+    private static String normalizeResourcePath(String path) { 
+        String p = path.replace('\\', '/');
+        // Quellordner-Präfixe entfernen, falls mit übergeben
+        if (p.startsWith("src/test/resources/")) {
+            p = p.substring("src/test/resources/".length());
+        } else if (p.startsWith("src/main/resources/")) {
+            p = p.substring("src/main/resources/".length());
+        }
+        // Für Class.getResource: führenden Slash setzen
+        if (!p.startsWith("/")) p = "/" + p;
+        return p;
+    }
+
+}
+
+
+