From b28205f2634b6bf8827e89d30b1d37176ea97406 Mon Sep 17 00:00:00 2001
From: Percen <21pesi1bif@hft-stuttgart.de>
Date: Mon, 9 Dec 2024 14:07:24 +0000
Subject: [PATCH] Update public/index.html

---
 public/index.html | 213 ++++++++++++++++++++--------------------------
 1 file changed, 91 insertions(+), 122 deletions(-)
diff --git a/public/index.html b/public/index.html
index 58b4218..5efac47 100644
--- a/public/index.html
+++ b/public/index.html
@@ -2,8 +2,7 @@
 <html>
 <head>
   <meta charset="UTF-8">
-  <meta name="viewport"
-        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+  <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
   <title>GeoVis AR Projekt</title>
 
   <!-- three.js -->
@@ -12,137 +11,107 @@
 </head>
 <body>
 
-<!-- Starting an immersive WebXR session requires user interaction.
-    We start this one with a simple button. -->
 <button onclick="activateXR()">Start city planning</button>
 <script>
 async function activateXR() {
-  // Add a canvas element and initialize a WebGL context that is compatible with WebXR.
   const canvas = document.createElement("canvas");
   document.body.appendChild(canvas);
   const gl = canvas.getContext("webgl", {xrCompatible: true});
 
   const scene = new THREE.Scene();
 
-// The cube will have a different color on each side.
-const materials = [
-  new THREE.MeshBasicMaterial({color: 0xff0000}),
-  new THREE.MeshBasicMaterial({color: 0x0000ff}),
-  new THREE.MeshBasicMaterial({color: 0x00ff00}),
-  new THREE.MeshBasicMaterial({color: 0xff00ff}),
-  new THREE.MeshBasicMaterial({color: 0x00ffff}),
-  new THREE.MeshBasicMaterial({color: 0xffff00})
-];
-
-// Create the cube and add it to the demo scene.
-/**
- 
-const cube = new THREE.Mesh(new THREE.BoxBufferGeometry(0.5, 0.5, 0.5), materials);
-cube.position.set(0, 0, -1);
-scene.add(cube);
-* */
-
-
-const directionalLight = new THREE.DirectionalLight(0xffffff, 0.3);
-directionalLight.position.set(10, 15, 10);
-scene.add(directionalLight);
-
-// Set up the WebGLRenderer, which handles rendering to the session's base layer.
-const renderer = new THREE.WebGLRenderer({
-  alpha: true,
-  preserveDrawingBuffer: true,
-  canvas: canvas,
-  context: gl
-});
-renderer.autoClear = false;
-
-// The API directly updates the camera matrices.
-// Disable matrix auto updates so three.js doesn't attempt
-// to handle the matrices independently.
-const camera = new THREE.PerspectiveCamera();
-camera.matrixAutoUpdate = false;
-
-// Initialize a WebXR session using "immersive-ar".
-const session = await navigator.xr.requestSession("immersive-ar", {requiredFeatures: ['hit-test']});
-
-session.updateRenderState({
-  baseLayer: new XRWebGLLayer(session, gl)
-});
-
-// A 'local' reference space has a native origin that is located
-// near the viewer's position at the time the session was created.
-const referenceSpace = await session.requestReferenceSpace('local');
-
-
-// Create another XRReferenceSpace that has the viewer as the origin.
-const viewerSpace = await session.requestReferenceSpace('viewer');
-// Perform hit testing using the viewer as origin.
-const hitTestSource = await session.requestHitTestSource({ space: viewerSpace });
-
-
-const loader = new THREE.GLTFLoader();
-let reticle;
-loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/reticle/reticle.gltf", function(gltf) {
-  reticle = gltf.scene;
-  reticle.visible = false;
-  scene.add(reticle);
-})
-
-let flower;
-loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/sunflower/sunflower.gltf", function(gltf) {
-  flower = gltf.scene;
-});
-
-
-session.addEventListener("select", (event) => {
-  if (flower) {
-    const clone = flower.clone();
-    clone.position.copy(reticle.position);
-    scene.add(clone);
+  // Lichtquelle
+  const directionalLight = new THREE.DirectionalLight(0xffffff, 0.3);
+  directionalLight.position.set(10, 15, 10);
+  scene.add(directionalLight);
+
+  // Haupt-Renderer
+  const renderer = new THREE.WebGLRenderer({
+    alpha: true,
+    preserveDrawingBuffer: true,
+    canvas: canvas,
+    context: gl
+  });
+  renderer.autoClear = false;
+
+  const camera = new THREE.PerspectiveCamera();
+  camera.matrixAutoUpdate = false;
+
+  const session = await navigator.xr.requestSession("immersive-ar", {requiredFeatures: ['hit-test']});
+  session.updateRenderState({
+    baseLayer: new XRWebGLLayer(session, gl)
+  });
+  const referenceSpace = await session.requestReferenceSpace('local');
+  const viewerSpace = await session.requestReferenceSpace('viewer');
+  const hitTestSource = await session.requestHitTestSource({ space: viewerSpace });
+
+  // Minimap-Renderer einrichten
+  const minimapSize = 5;
+  const minimapCamera = new THREE.OrthographicCamera(-minimapSize, minimapSize, minimapSize, -minimapSize, 0.1, 100);
+  minimapCamera.position.set(0, 10, 0); // Vogelperspektive
+  minimapCamera.lookAt(0, 0, 0);
+
+  const minimapRenderer = new THREE.WebGLRenderer({ alpha: true });
+  minimapRenderer.setSize(200, 200);
+  minimapRenderer.domElement.style.position = "absolute";
+  minimapRenderer.domElement.style.bottom = "10px";
+  minimapRenderer.domElement.style.right = "10px";
+  document.body.appendChild(minimapRenderer.domElement);
+
+  const loader = new THREE.GLTFLoader();
+  let reticle;
+  loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/reticle/reticle.gltf", function(gltf) {
+    reticle = gltf.scene;
+    reticle.visible = false;
+    scene.add(reticle);
+  });
+
+  let flower;
+  loader.load("https://immersive-web.github.io/webxr-samples/media/gltf/sunflower/sunflower.gltf", function(gltf) {
+    flower = gltf.scene;
+  });
+
+  session.addEventListener("select", (event) => {
+    if (flower) {
+      const clone = flower.clone();
+      clone.position.copy(reticle.position);
+      scene.add(clone);
+    }
+  });
+
+  // Renderloop
+  const onXRFrame = (time, frame) => {
+    session.requestAnimationFrame(onXRFrame);
+    gl.bindFramebuffer(gl.FRAMEBUFFER, session.renderState.baseLayer.framebuffer)
+
+    const pose = frame.getViewerPose(referenceSpace);
+    if (pose) {
+      const view = pose.views[0];
+      const viewport = session.renderState.baseLayer.getViewport(view);
+      renderer.setSize(viewport.width, viewport.height);
+
+      camera.matrix.fromArray(view.transform.matrix);
+      camera.projectionMatrix.fromArray(view.projectionMatrix);
+      camera.updateMatrixWorld(true);
+
+      const hitTestResults = frame.getHitTestResults(hitTestSource);
+      if (hitTestResults.length > 0 && reticle) {
+        const hitPose = hitTestResults[0].getPose(referenceSpace);
+        reticle.visible = true;
+        reticle.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z);
+        reticle.updateMatrixWorld(true);
+      }
+
+      // Minimap-Update
+      minimapCamera.position.x = camera.position.x;
+      minimapCamera.position.z = camera.position.z;
+      minimapRenderer.render(scene, minimapCamera);
+
+      // Szene rendern
+      renderer.render(scene, camera);
+    }
   }
-});
-
-
-
-// Create a render loop that allows us to draw on the AR view.
-const onXRFrame = (time, frame) => {
-  // Queue up the next draw request.
   session.requestAnimationFrame(onXRFrame);
-
-  // Bind the graphics framebuffer to the baseLayer's framebuffer
-  gl.bindFramebuffer(gl.FRAMEBUFFER, session.renderState.baseLayer.framebuffer)
-
-  // Retrieve the pose of the device.
-  // XRFrame.getViewerPose can return null while the session attempts to establish tracking.
-  const pose = frame.getViewerPose(referenceSpace);
-  if (pose) {
-    // In mobile AR, we only have one view.
-    const view = pose.views[0];
-
-    const viewport = session.renderState.baseLayer.getViewport(view);
-    renderer.setSize(viewport.width, viewport.height)
-
-    // Use the view's transform matrix and projection matrix to configure the THREE.camera.
-    camera.matrix.fromArray(view.transform.matrix)
-    camera.projectionMatrix.fromArray(view.projectionMatrix);
-    camera.updateMatrixWorld(true);
-    
-
-const hitTestResults = frame.getHitTestResults(hitTestSource);
-if (hitTestResults.length > 0 && reticle) {
-  const hitPose = hitTestResults[0].getPose(referenceSpace);
-  reticle.visible = true;
-  reticle.position.set(hitPose.transform.position.x, hitPose.transform.position.y, hitPose.transform.position.z)
-  reticle.updateMatrixWorld(true);
-}
-
-
-    // Render the scene with THREE.WebGLRenderer.
-    renderer.render(scene, camera)
-  }
-}
-session.requestAnimationFrame(onXRFrame);
-
 }
 </script>
 </body>
-- 
GitLab

