Remove abandoned gui.opengl stub before OpenGL view rewrite

OpenGLCamera/UniformLocation were a partial earlier attempt; superseded by
the new gui.gl package per docs/superpowers/plans/2026-06-18-opengl-3d-view.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CityDoctorParent/Extensions/CityDoctorGUI/src/main/java/de/hft/stuttgart/citydoctor2/gui/opengl/OpenGLCamera.java

-package de.hft.stuttgart.citydoctor2.gui.opengl;
-
-import com.jogamp.opengl.math.FloatUtil;
-import com.jogamp.opengl.math.Matrix4f;
-import com.jogamp.opengl.math.Vec2f;
-import com.jogamp.opengl.math.Vec3f;
-
-public class OpenGLCamera {
-
-	private static final float MIN_DISTANCE = 1f;
-	private static final float PI = (float) Math.PI;
-	private static final float SCROLL_PERCENTAGE = 0.1f;
-
-	private Matrix4f projMatrix;
-	private Matrix4f viewMatrix;
-	private Matrix4f projViewMatrix;
-	private Matrix4f temp = new Matrix4f();
-
-	private UniformLocation projViewModel;
-	private float rotateAroundZ = 0f;
-
-	// rotation temp variables
-	private Vec3f res = new Vec3f();
-	private Vec3f rotAxis = new Vec3f();
-	private Vec3f cross = new Vec3f();
-	
-	// move temp variables
-	private Vec2f dir = new Vec2f();
-
-	private Vec3f eyePos = new Vec3f();
-	private Vec3f centerPos = new Vec3f();
-	private Vec3f up = new Vec3f();
-	private float distance = 5;
-
-	private float[] matrixBuffer = new float[16];
-
-	public OpenGLCamera(UniformLocation projViewModel) {
-		this.projViewModel = projViewModel;
-		projViewMatrix = new Matrix4f();
-		viewMatrix = new Matrix4f();
-		projMatrix = new Matrix4f();
-		up.setZ(1);
-		eyePos.setX(distance);
-	}
-
-	public void reshape(int width, int height, float distance) {
-		// 90 degree fow
-		float fow = PI / 2f;
-		float aspectRatio = (float) width / height;
-		projMatrix.setToPerspective(fow, aspectRatio, MIN_DISTANCE, distance);
-		updateMatrix();
-	}
-
-	private void updateMatrix() {
-		viewMatrix.setToLookAt(eyePos, centerPos, up, temp);
-		projViewMatrix.mul(projMatrix, viewMatrix);
-		// model matrix is identity
-		projViewMatrix.get(matrixBuffer);
-		projViewModel.uploadMat4(matrixBuffer);
-	}
-
-	public void rotate(double dragDiffX, double dragDiffY) {
-		float rotationX = (float) (-dragDiffX / 500f);
-		float rotationZ = (float) (-dragDiffY / 500f);
-		float tempRotationValue = rotateAroundZ + rotationZ;
-		if (tempRotationValue < -Math.PI / 2 + 0.0001 || tempRotationValue > Math.PI / 2 - 0.0001) {
-			// to close to 90 degree, stop rotation
-			rotationZ = 0;
-		}
-		rotateAroundZ += rotationZ;
-
-		res.minus(eyePos, centerPos);
-		rotateZ(res, rotationX);
-
-		rotAxis.setX(res.x());
-		rotAxis.setY(res.y());
-		rotAxis.setZ(res.z() + 5);
-
-		cross.cross(rotAxis, res);
-		cross.normalize();
-		rotateAroundAxis(res, rotationZ, cross.x(), cross.y(), cross.z());
-
-		eyePos.plus(centerPos, res);
-		updateMatrix();
-	}
-
-	public Vec3f rotateZ(Vec3f vec, float angle) {
-		float sin = FloatUtil.sin(angle);
-		float cos = FloatUtil.cos(angle);
-		float x = vec.x() * cos - vec.y() * sin;
-		float y = vec.x() * sin + vec.y() * cos;
-		vec.setX(x);
-		vec.setY(y);
-		return vec;
-	}
-
-	private void rotateAroundAxis(Vec3f vector, float angle, float aX, float aY, float aZ) {
-		float hangle = angle * 0.5f;
-		float sinAngle = FloatUtil.sin(hangle);
-		float qx = aX * sinAngle, qy = aY * sinAngle, qz = aZ * sinAngle;
-		float qw = FloatUtil.cos(hangle);
-		float w2 = qw * qw, x2 = qx * qx, y2 = qy * qy, z2 = qz * qz, zw = qz * qw;
-		float xy = qx * qy, xz = qx * qz, yw = qy * qw, yz = qy * qz, xw = qx * qw;
-		float x = vector.x();
-		float y = vector.y();
-		float z = vector.z();
-		vector.setX((w2 + x2 - z2 - y2) * x + (-zw + xy - zw + xy) * y + (yw + xz + xz + yw) * z);
-		vector.setY((xy + zw + zw + xy) * x + (y2 - z2 + w2 - x2) * y + (yz + yz - xw - xw) * z);
-		vector.setZ((xz - yw + xz - yw) * x + (yz + yz + xw + xw) * y + (z2 - y2 - x2 + w2) * z);
-	}
-
-	public void setDistance(float distance) {
-		this.distance = distance;
-		res.minus(centerPos, eyePos);
-		res.normalize();
-		res.scale(distance);
-		eyePos.plus(res, centerPos);
-		updateMatrix();
-	}
-
-	public void scroll(float scroll) {
-		float addedDistance = distance * scroll * SCROLL_PERCENTAGE;
-		distance += addedDistance;
-		setDistance(distance);
-	}
-
-	public void move(float dragDiffX, float dragDiffY) {
-		res.minus(centerPos, eyePos);
-		dir.setX(res.x());
-		dir.setY(res.y());
-
-		dir.normalize();
-//		var yDrag = vec2.create();
-//		vec2.scale(yDrag, dir, dragDiffY * 0.5);
-//
-//		// handle diffY
-//		vec3.add(this.centerPos, this.centerPos, vec3.fromValues(yDrag[0], yDrag[1], 0));
-//		vec3.add(this.eyepos, this.eyepos, vec3.fromValues(yDrag[0], yDrag[1], 0));
-//		// handle diffX
-//		var temp = dir[0];
-//		dir[0] = dir[1];
-//		dir[1] = -temp;
-//		vec2.scale(dir, dir, -dragDiffX * 0.5);
-//
-//		vec3.add(this.centerPos, this.centerPos, vec3.fromValues(dir[0], dir[1], 0));
-//		vec3.add(this.eyepos, this.eyepos, vec3.fromValues(dir[0], dir[1], 0));
-		this.updateMatrix();
-	}
-
-}

CityDoctorParent/Extensions/CityDoctorGUI/src/main/java/de/hft/stuttgart/citydoctor2/gui/opengl/UniformLocation.java

-/*-
- * Copyright 2021 Hochschule für Technik Stuttgart
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package de.hft.stuttgart.citydoctor2.gui.opengl;
-
-import com.jogamp.opengl.GL3;
-
-public class UniformLocation {
-	
-	private int location;
-	private GL3 gl;
-	
-	public UniformLocation(GL3 gl, int location) {
-		this.location = location;
-
-	}
-	
-	public void uploadMat4(float[] mat) {
-		gl.glUniformMatrix4fv(location, mat.length, false, mat, 0);
-	}
-
-}