Update viewer.js

viewer.js

@@ -1,4 +1,3 @@
-// viewer.js
 // ==============================
 // viewer.js
 // ==============================
@@ -19,347 +18,357 @@ let plyUrl, glbUrl;
  * initializeViewer(config, instanceId)
  */
 export async function initializeViewer(config, instanceId) {
-    if (viewerInitialized) return;
-
-    const isIOS    = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
-    const isMobile = isIOS || /Android/i.test(navigator.userAgent);
-
-    // 1. Read config -------------------------------------------------------------
-    plyUrl = config.ply_url;
-    glbUrl = config.glb_url;
-    minZoom     = parseFloat(config.minZoom  || "1");
-    maxZoom     = parseFloat(config.maxZoom  || "20");
-    minAngle    = parseFloat(config.minAngle || "-45");
-    maxAngle    = parseFloat(config.maxAngle || "90");
-    minAzimuth  = (config.minAzimuth !== undefined) ? parseFloat(config.minAzimuth) : -360;
-    maxAzimuth  = (config.maxAzimuth !== undefined) ? parseFloat(config.maxAzimuth) : 360;
-    minPivotY   = parseFloat(config.minPivotY  || "0");
-    minY        = (config.minY !== undefined) ? parseFloat(config.minY) : 0;
-
-    modelX         = (config.modelX !== undefined) ? parseFloat(config.modelX) : 0;
-    modelY         = (config.modelY !== undefined) ? parseFloat(config.modelY) : 0;
-    modelZ         = (config.modelZ !== undefined) ? parseFloat(config.modelZ) : 0;
-    modelScale     = (config.modelScale !== undefined) ? parseFloat(config.modelScale) : 1;
-    modelRotationX = (config.modelRotationX !== undefined) ? parseFloat(config.modelRotationX) : 0;
-    modelRotationY = (config.modelRotationY !== undefined) ? parseFloat(config.modelRotationY) : 0;
-    modelRotationZ = (config.modelRotationZ !== undefined) ? parseFloat(config.modelRotationZ) : 0;
-
-    const cameraX      = (config.cameraX !== undefined) ? parseFloat(config.cameraX) : 0;
-    const cameraY      = (config.cameraY !== undefined) ? parseFloat(config.cameraY) : 2;
-    const cameraZ      = (config.cameraZ !== undefined) ? parseFloat(config.cameraZ) : 5;
-    const cameraXPhone = (config.cameraXPhone !== undefined) ? parseFloat(config.cameraXPhone) : cameraX;
-    const cameraYPhone = (config.cameraYPhone !== undefined) ? parseFloat(config.cameraYPhone) : cameraY;
-    const cameraZPhone = (config.cameraZPhone !== undefined) ? parseFloat(config.cameraZPhone) : (cameraZ * 1.5);
-
-    chosenCameraX = isMobile ? cameraXPhone : cameraX;
-    chosenCameraY = isMobile ? cameraYPhone : cameraY;
-    chosenCameraZ = isMobile ? cameraZPhone : cameraZ;
-
-    // 2. Grab DOM ---------------------------------------------------------------
-    const canvasId          = 'canvas-' + instanceId;
-    const progressDialog    = document.getElementById('progress-dialog-' + instanceId);
-    const progressIndicator = document.getElementById('progress-indicator-' + instanceId);
-    const viewerContainer   = document.getElementById('viewer-container-' + instanceId);
-
-    // 3. Create <canvas> --------------------------------------------------------
-    let oldCanvas = document.getElementById(canvasId);
-    if (oldCanvas) oldCanvas.remove();
-    const canvas = document.createElement('canvas');
-    canvas.id = canvasId;
-    canvas.className = 'ply-canvas';
-    canvas.style.zIndex = "1";
-    viewerContainer.insertBefore(canvas, progressDialog);
-
-    // 4. Wheel listener ---------------------------------------------------------
-    canvas.addEventListener('wheel', e => {
-        if (cameraEntity && cameraEntity.script && cameraEntity.script.orbitCamera) {
-            const orbitCam = cameraEntity.script.orbitCamera;
-            const sens = (cameraEntity.script.orbitCameraInputMouse?.distanceSensitivity) || 0.4;
-            if (cameraEntity.camera.projection === pc.PROJECTION_PERSPECTIVE) {
-                orbitCam.distance -= e.deltaY * 0.01 * sens * (orbitCam.distance * 0.1);
-            } else {
-                orbitCam.orthoHeight -= e.deltaY * 0.01 * sens * (orbitCam.orthoHeight * 0.1);
-            }
-            e.preventDefault();
-            e.stopPropagation();
+  if (viewerInitialized) return;
+
+  const isIOS    = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+  const isMobile = isIOS || /Android/i.test(navigator.userAgent);
+
+  // 1. Read config -------------------------------------------------------------
+  plyUrl = config.ply_url;
+  glbUrl = config.glb_url;
+  minZoom     = parseFloat(config.minZoom  || "1");
+  maxZoom     = parseFloat(config.maxZoom  || "20");
+  minAngle    = parseFloat(config.minAngle || "-45");
+  maxAngle    = parseFloat(config.maxAngle || "90");
+  minAzimuth  = (config.minAzimuth !== undefined) ? parseFloat(config.minAzimuth) : -360;
+  maxAzimuth  = (config.maxAzimuth !== undefined) ? parseFloat(config.maxAzimuth) : 360;
+  minPivotY   = parseFloat(config.minPivotY  || "0");
+  minY        = (config.minY !== undefined) ? parseFloat(config.minY) : 0;
+
+  modelX         = (config.modelX !== undefined) ? parseFloat(config.modelX) : 0;
+  modelY         = (config.modelY !== undefined) ? parseFloat(config.modelY) : 0;
+  modelZ         = (config.modelZ !== undefined) ? parseFloat(config.modelZ) : 0;
+  modelScale     = (config.modelScale !== undefined) ? parseFloat(config.modelScale) : 1;
+  modelRotationX = (config.modelRotationX !== undefined) ? parseFloat(config.modelRotationX) : 0;
+  modelRotationY = (config.modelRotationY !== undefined) ? parseFloat(config.modelRotationY) : 0;
+  modelRotationZ = (config.modelRotationZ !== undefined) ? parseFloat(config.modelRotationZ) : 0;
+
+  const cameraX      = (config.cameraX !== undefined) ? parseFloat(config.cameraX) : 0;
+  const cameraY      = (config.cameraY !== undefined) ? parseFloat(config.cameraY) : 2;
+  const cameraZ      = (config.cameraZ !== undefined) ? parseFloat(config.cameraZ) : 5;
+  const cameraXPhone = (config.cameraXPhone !== undefined) ? parseFloat(config.cameraXPhone) : cameraX;
+  const cameraYPhone = (config.cameraYPhone !== undefined) ? parseFloat(config.cameraYPhone) : cameraY;
+  const cameraZPhone = (config.cameraZPhone !== undefined) ? parseFloat(config.cameraZPhone) : (cameraZ * 1.5);
+
+  chosenCameraX = isMobile ? cameraXPhone : cameraX;
+  chosenCameraY = isMobile ? cameraYPhone : cameraY;
+  chosenCameraZ = isMobile ? cameraZPhone : cameraZ;
+
+  // 2. Grab DOM ---------------------------------------------------------------
+  const canvasId          = 'canvas-' + instanceId;
+  const progressDialog    = document.getElementById('progress-dialog-' + instanceId);
+  const progressIndicator = document.getElementById('progress-indicator-' + instanceId);
+  const viewerContainer   = document.getElementById('viewer-container-' + instanceId);
+
+  // 3. Create <canvas> --------------------------------------------------------
+  let oldCanvas = document.getElementById(canvasId);
+  if (oldCanvas) oldCanvas.remove();
+  const canvas = document.createElement('canvas');
+  canvas.id = canvasId;
+  canvas.className = 'ply-canvas';
+  canvas.style.zIndex = "1";
+  viewerContainer.insertBefore(canvas, progressDialog);
+
+  // 4. Wheel listener ---------------------------------------------------------
+  canvas.addEventListener('wheel', e => {
+    if (cameraEntity && cameraEntity.script && cameraEntity.script.orbitCamera) {
+      const orbitCam = cameraEntity.script.orbitCamera;
+      const sens = (cameraEntity.script.orbitCameraInputMouse?.distanceSensitivity) || 0.4;
+      if (cameraEntity.camera.projection === pc.PROJECTION_PERSPECTIVE) {
+        orbitCam.distance -= e.deltaY * 0.01 * sens * (orbitCam.distance * 0.1);
+      } else {
+        orbitCam.orthoHeight -= e.deltaY * 0.01 * sens * (orbitCam.orthoHeight * 0.1);
+      }
+      e.preventDefault();
+      e.stopPropagation();
+    }
+  }, { passive: false });
+
+  progressDialog.style.display = 'block';
+
+  // 5. Import PlayCanvas -------------------------------------------------------
+  if (!pc) {
+    pc = await import("https://esm.run/playcanvas");
+    window.pc = pc;
+  }
+
+  try {
+    // 6. Setup device & app ----------------------------------------------------
+    // --- NEW: robust WebGL-2 → WebGL-1 fallback (fixes iPhone blank screen) ---
+    async function getGraphicsDevice(preferWebgl2 = true) {
+      const baseOpts = {
+        glslangUrl:  "https://playcanvas.vercel.app/static/lib/glslang/glslang.js",
+        twgslUrl:    "https://playcanvas.vercel.app/static/lib/twgsl/twgsl.js",
+        antialias:   false
+      };
+      try {
+        return await pc.createGraphicsDevice(canvas, {
+          ...baseOpts,
+          deviceTypes: preferWebgl2 ? ["webgl2"] : ["webgl1"]
+        });
+      } catch (err) {
+        if (preferWebgl2) {
+          console.warn("[viewer] WebGL2 unavailable, retrying with WebGL1 …", err);
+          return await pc.createGraphicsDevice(canvas, {
+            ...baseOpts,
+            deviceTypes: ["webgl1"]
+          });
         }
-    }, { passive: false });
-
-    progressDialog.style.display = 'block';
-
-    // 5. Import PlayCanvas -------------------------------------------------------
-    if (!pc) {
-        pc = await import("https://esm.run/playcanvas");
-        window.pc = pc;
+        throw err;
+      }
     }
 
-    try {
-        // 6. Setup device & app ----------------------------------------------------
-        async function getGraphicsDevice(preferWebgl2 = true) {
-            const baseOpts = {
-                glslangUrl:  "https://playcanvas.vercel.app/static/lib/glslang/glslang.js",
-                twgslUrl:    "https://playcanvas.vercel.app/static/lib/twgsl/twgsl.js",
-                antialias:   false
-            };
-            try {
-                return await pc.createGraphicsDevice(canvas, {
-                    ...baseOpts,
-                    deviceTypes: preferWebgl2 ? ["webgl2"] : ["webgl1"]
-                });
-            } catch (err) {
-                if (preferWebgl2) {
-                    console.warn("[viewer] WebGL2 unavailable, retrying with WebGL1 …", err);
-                    return await getGraphicsDevice(false);
-                }
-                throw err;
-            }
+    const device = await getGraphicsDevice(true);  // first try WebGL2
+    device.maxPixelRatio = Math.min(window.devicePixelRatio, 2);
+
+    const opts = new pc.AppOptions();
+    opts.graphicsDevice = device;
+    opts.mouse = new pc.Mouse(canvas);
+    opts.touch = new pc.TouchDevice(canvas);
+    opts.componentSystems = [
+      pc.RenderComponentSystem,
+      pc.CameraComponentSystem,
+      pc.LightComponentSystem,
+      pc.ScriptComponentSystem,
+      pc.GSplatComponentSystem,
+      pc.CollisionComponentSystem,
+      pc.RigidbodyComponentSystem
+    ];
+    opts.resourceHandlers = [
+      pc.TextureHandler,
+      pc.ContainerHandler,
+      pc.ScriptHandler,
+      pc.GSplatHandler
+    ];
+
+    app = new pc.Application(canvas, opts);
+    app.setCanvasFillMode(pc.FILLMODE_NONE);
+    app.setCanvasResolution(pc.RESOLUTION_AUTO);
+
+    // 7. Resize observer -------------------------------------------------------
+    resizeObserver = new ResizeObserver(entries => {
+      for (const entry of entries) {
+        const { width, height } = entry.contentRect;
+        if (app) {
+          app.resizeCanvas(width, height);
         }
-
-        const device = await getGraphicsDevice(true);
-        device.maxPixelRatio = Math.min(window.devicePixelRatio, 2);
-
-        const opts = new pc.AppOptions();
-        opts.graphicsDevice = device;
-        opts.mouse = new pc.Mouse(canvas);
-        opts.touch = new pc.TouchDevice(canvas);
-        opts.componentSystems = [
-            pc.RenderComponentSystem,
-            pc.CameraComponentSystem,
-            pc.LightComponentSystem,
-            pc.ScriptComponentSystem,
-            pc.GSplatComponentSystem,
-            pc.CollisionComponentSystem,
-            pc.RigidbodyComponentSystem
-        ];
-        opts.resourceHandlers = [
-            pc.TextureHandler,
-            pc.ContainerHandler,
-            pc.ScriptHandler,
-            pc.GSplatHandler
-        ];
-
-        app = new pc.Application(canvas, opts);
-        app.setCanvasFillMode(pc.FILLMODE_NONE);
-        app.setCanvasResolution(pc.RESOLUTION_AUTO);
-
-        // 7. Resize observer -------------------------------------------------------
-        resizeObserver = new ResizeObserver(entries => {
-            for (const entry of entries) {
-                const { width, height } = entry.contentRect;
-                if (app) {
-                    app.resizeCanvas(width, height);
-                }
-            }
-        });
-        resizeObserver.observe(viewerContainer);
-
-        window.addEventListener('resize', () => {
-            if (app) app.resizeCanvas(viewerContainer.clientWidth, viewerContainer.clientHeight);
-        });
-        app.on('destroy', () => {
-            window.removeEventListener('resize', resizeCanvas);
-        });
-
-        // 8. Assets ----------------------------------------------------------------
-        const assets = {
-            model: new pc.Asset('gsplat', 'gsplat', { url: plyUrl }),
-            orbit: new pc.Asset('script', 'script', { url: "https://mikafil-viewer-gs.static.hf.space/orbit-camera.js" }),
-            galerie: new pc.Asset('galerie', 'container', { url: glbUrl }),
-            hdr: new pc.Asset('hdr', 'texture', {
-                url: `https://huggingface.co/datasets/bilca/ply_files/resolve/main/galeries/blanc.png`
-            }, { type: pc.TEXTURETYPE_RGBP, mipmaps: false })
-        };
-
-        const loader = new pc.AssetListLoader(Object.values(assets), app.assets);
-        let lastProg = 0;
-
-        assets.model.on('load', () => {
-            progressDialog.style.display = 'none';
-        });
-        assets.model.on('error', err => {
-            console.error("Error loading PLY file:", err);
-            progressDialog.innerHTML = `<p style="color: red">Error loading model: ${err}</p>`;
-        });
-
-        const progCheck = setInterval(() => {
-            if (assets.model.resource) {
-                progressIndicator.value = 100;
-                clearInterval(progCheck);
-                progressDialog.style.display = 'none';
-            } else if (assets.model.loading) {
-                lastProg = Math.min(lastProg + 2, 90);
-                progressIndicator.value = lastProg;
-            }
-        }, 100);
-
-        loader.load(async () => {
-            app.start();
-            app.scene.envAtlas = assets.hdr.resource;
-
-            // ** Insert render-loop confirmation alert for iOS **
-            if (isIOS) {
-                app.once('update', function firstFrame() {
-                    alert('Render loop started on iOS');
-                });
-            }
-
-            // 9. Scene ----------------------------------------------------------------
-            modelEntity = new pc.Entity('model');
-            modelEntity.addComponent('gsplat', { asset: assets.model });
-            modelEntity.setLocalPosition(modelX, modelY, modelZ);
-            modelEntity.setLocalEulerAngles(modelRotationX, modelRotationY, modelRotationZ);
-            modelEntity.setLocalScale(modelScale, modelScale, modelScale);
-            app.root.addChild(modelEntity);
-
-            const dirLight = new pc.Entity('Cascaded Light');
-            dirLight.addComponent('light', {
-                type: 'directional',
-                color: pc.Color.WHITE,
-                shadowBias: 0.3,
-                normalOffsetBias: 0.2,
-                intensity: 1.0,
-                soft: true,
-                shadowResolution: 4096,
-                penumbraSize: 7,
-                penumbraFalloff: 1.5,
-                shadowSamples: 128,
-                shadowBlockerSamples: 16,
-                castShadows: true,
-                shadowType: pc.SHADOW_PCSS_32F,
-                shadowDistance: 1000
-            });
-            dirLight.setLocalEulerAngles(0, 0, 0);
-            app.root.addChild(dirLight);
-
-            const galleryEntity = assets.galerie.resource.instantiateRenderEntity();
-            app.root.addChild(galleryEntity);
-
-            // 10. Camera --------------------------------------------------------------
-            cameraEntity = new pc.Entity('camera');
-            cameraEntity.addComponent('camera', {
-                clearColor: config.canvas_background
-                    ? parseInt(config.canvas_background.substr(1, 2), 16) / 255
-                    : 0,
-            });
-            cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
-            cameraEntity.lookAt(modelEntity.getPosition());
-
-            cameraEntity.addComponent('script');
-            cameraEntity.script.create('orbitCamera', {
-                attributes: {
-                    inertiaFactor: 0.2,
-                    focusEntity: modelEntity,
-                    distanceMax: maxZoom,
-                    distanceMin: minZoom,
-                    pitchAngleMax: maxAngle,
-                    pitchAngleMin: minAngle,
-                    yawAngleMax: maxAzimuth,
-                    yawAngleMin: minAzimuth,
-                    minPivotY: minPivotY,
-                    frameOnStart: false
-                }
-            });
-            cameraEntity.script.create('orbitCameraInputMouse', {
-                attributes: {
-                    orbitSensitivity: isMobile ? 0.6 : 0.3,
-                    distanceSensitivity: isMobile ? 0.5 : 0.4
-                }
-            });
-            if (cameraEntity.script.orbitCameraInputMouse) {
-                cameraEntity.script.orbitCameraInputMouse.onMouseWheel = function() {};
-            }
-            cameraEntity.script.create('orbitCameraInputTouch', {
-                attributes: {
-                    orbitSensitivity: 0.6,
-                    distanceSensitivity: 0.5
-                }
-            });
-            app.root.addChild(cameraEntity);
-
-            // 11. Guard & resize ------------------------------------------------------
-            app.once('update', () => resetViewerCamera());
-            app.on('update', dt => {
-                if (cameraEntity) {
-                    const pos = cameraEntity.getPosition();
-                    if (pos.y < minY) {
-                        cameraEntity.setPosition(pos.x, minY, pos.z);
-                    }
-                }
-            });
-
-            app.resizeCanvas(viewerContainer.clientWidth, viewerContainer.clientHeight);
-
-            viewerInitialized = true;
+      }
+    });
+    resizeObserver.observe(viewerContainer);
+
+    window.addEventListener('resize', () => {
+      if (app) app.resizeCanvas(viewerContainer.clientWidth, viewerContainer.clientHeight);
+    });
+    app.on('destroy', () => {
+      window.removeEventListener('resize', resizeCanvas);
+    });
+
+    // 8. Assets ----------------------------------------------------------------
+    const assets = {
+      model: new pc.Asset('gsplat', 'gsplat', { url: plyUrl }),
+      orbit: new pc.Asset('script', 'script', { url: "https://mikafil-viewer-gs.static.hf.space/orbit-camera.js" }),
+      galerie: new pc.Asset('galerie', 'container', { url: glbUrl }),
+      hdr: new pc.Asset('hdr', 'texture', {
+        url: https://huggingface.co/datasets/bilca/ply_files/resolve/main/galeries/blanc.png
+      }, { type: pc.TEXTURETYPE_RGBP, mipmaps: false })
+    };
+
+    const loader = new pc.AssetListLoader(Object.values(assets), app.assets);
+    let lastProg = 0;
+    assets.model.on('load', () => progressDialog.style.display = 'none');
+    assets.model.on('error', err => {
+      console.error("Error loading PLY file:", err);
+      progressDialog.innerHTML = <p style="color: red">Error loading model: ${err}</p>;
+    });
+
+    const progCheck = setInterval(() => {
+      if (assets.model.resource) {
+        progressIndicator.value = 100;
+        clearInterval(progCheck);
+        progressDialog.style.display = 'none';
+      } else if (assets.model.loading) {
+        lastProg = Math.min(lastProg + 2, 90);
+        progressIndicator.value = lastProg;
+      }
+    }, 100);
+
+    loader.load(async () => {
+      app.start();
+      app.scene.envAtlas = assets.hdr.resource;
+
+      // 9. Scene ----------------------------------------------------------------
+      modelEntity = new pc.Entity('model');
+      modelEntity.addComponent('gsplat', { asset: assets.model });
+      modelEntity.setLocalPosition(modelX, modelY, modelZ);
+      modelEntity.setLocalEulerAngles(modelRotationX, modelRotationY, modelRotationZ);
+      modelEntity.setLocalScale(modelScale, modelScale, modelScale);
+      app.root.addChild(modelEntity);
+
+      const dirLight = new pc.Entity('Cascaded Light');
+      dirLight.addComponent('light', {
+        type: 'directional',
+        color: pc.Color.WHITE,
+        shadowBias: 0.3,
+        normalOffsetBias: 0.2,
+        intensity: 1.0,
+        soft: true,
+        shadowResolution: 4096,
+        penumbraSize: 7,
+        penumbraFalloff: 1.5,
+        shadowSamples: 128,
+        shadowBlockerSamples: 16,
+        castShadows: true,
+        shadowType: pc.SHADOW_PCSS_32F,
+        shadowDistance: 1000
+      });
+      dirLight.setLocalEulerAngles(0, 0, 0);
+      app.root.addChild(dirLight);
+
+      const galleryEntity = assets.galerie.resource.instantiateRenderEntity();
+      app.root.addChild(galleryEntity);
+
+      // 10. Camera --------------------------------------------------------------
+      cameraEntity = new pc.Entity('camera');
+      cameraEntity.addComponent('camera', {
+        clearColor: config.canvas_background
+          ? parseInt(config.canvas_background.substr(1, 2), 16) / 255
+          : 0,
+      });
+      cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+      cameraEntity.lookAt(modelEntity.getPosition());
+
+      cameraEntity.addComponent('script');
+      cameraEntity.script.create('orbitCamera', {
+        attributes: {
+          inertiaFactor: 0.2,
+          focusEntity: modelEntity,
+          distanceMax: maxZoom,
+          distanceMin: minZoom,
+          pitchAngleMax: maxAngle,
+          pitchAngleMin: minAngle,
+          yawAngleMax: maxAzimuth,
+          yawAngleMin: minAzimuth,
+          minPivotY: minPivotY,
+          frameOnStart: false
+        }
+      });
+      cameraEntity.script.create('orbitCameraInputMouse', {
+        attributes: {
+          orbitSensitivity: isMobile ? 0.6 : 0.3,
+          distanceSensitivity: isMobile ? 0.5 : 0.4
+        }
+      });
+      if (cameraEntity.script.orbitCameraInputMouse) {
+        cameraEntity.script.orbitCameraInputMouse.onMouseWheel = function() {};
+      }
+      cameraEntity.script.create('orbitCameraInputTouch', {
+        attributes: {
+          orbitSensitivity: 0.6,
+          distanceSensitivity: 0.5
+        }
+      });
+      app.root.addChild(cameraEntity);
+
+      // 11. Misc per-frame guard & resize --------------------------------------
+      app.once('update', () => resetViewerCamera());
+      app.on('update', dt => {
+        if (cameraEntity) {
+          const pos = cameraEntity.getPosition();
+          if (pos.y < minY) {
+            cameraEntity.setPosition(pos.x, minY, pos.z);
+          }
+        }
+      });
+
+      app.resizeCanvas(viewerContainer.clientWidth, viewerContainer.clientHeight);
+
+      // 12. Tooltips ------------------------------------------------------------
+      try {
+        const tooltipsModule = await import('./tooltips.js');
+        tooltipsModule.initializeTooltips({
+          app,
+          cameraEntity,
+          modelEntity,
+          tooltipsUrl: config.tooltips_url,
+          defaultVisible: !!config.showTooltipsDefault,
+          moveDuration: config.tooltipMoveDuration || 0.6
         });
-
-    } catch (error) {
-        console.error("Error initializing PlayCanvas viewer:", error);
-        progressDialog.innerHTML = `<p style="color: red">Error loading viewer: ${error.message}</p>`;
-    }
+      } catch (e) {
+        console.error("Error loading tooltips.js:", e);
+      }
+
+      progressDialog.style.display = 'none';
+      viewerInitialized = true;
+    });
+
+  } catch (error) {
+    console.error("Error initializing PlayCanvas viewer:", error);
+    progressDialog.innerHTML = <p style="color: red">Error loading viewer: ${error.message}</p>;
+  }
 }
 
 // -----------------------------------------------------------------------------
 // resetViewerCamera / cleanupViewer remain UNCHANGED
 // -----------------------------------------------------------------------------
 export function resetViewerCamera() {
-    try {
-        if (!cameraEntity || !modelEntity || !app) return;
-        const orbitCam = cameraEntity.script.orbitCamera;
-        if (!orbitCam) return;
-
-        const modelPos = modelEntity.getPosition();
-        const tempEnt = new pc.Entity();
-        tempEnt.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
-        tempEnt.lookAt(modelPos);
-
-        const dist = new pc.Vec3().sub2(
-            new pc.Vec3(chosenCameraX, chosenCameraY, chosenCameraZ),
-            modelPos
-        ).length();
-
-        cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
-        cameraEntity.lookAt(modelPos);
-
-        orbitCam.pivotPoint = modelPos.clone();
-        orbitCam._targetDistance = dist;
-        orbitCam._distance       = dist;
-
-        const rot = tempEnt.getRotation();
-        const fwd = new pc.Vec3();
-        rot.transformVector(pc.Vec3.FORWARD, fwd);
-
-        const yaw = Math.atan2(-fwd.x, -fwd.z) * pc.math.RAD_TO_DEG;
-        const yawQuat = new pc.Quat().setFromEulerAngles(0, -yaw, 0);
-        const rotNoYaw = new pc.Quat().mul2(yawQuat, rot);
-        const fNoYaw = new pc.Vec3();
-        rotNoYaw.transformVector(pc.Vec3.FORWARD, fNoYaw);
-        const pitch = Math.atan2(fNoYaw.y, -fNoYaw.z) * pc.math.RAD_TO_DEG;
-
-        orbitCam._targetYaw   = yaw;
-        orbitCam._yaw         = yaw;
-        orbitCam._targetPitch = pitch;
-        orbitCam._pitch       = pitch;
-        orbitCam._updatePosition && orbitCam._updatePosition();
-
-        tempEnt.destroy();
-    } catch (e) {
-        console.error("Error resetting camera:", e);
-    }
+  try {
+    if (!cameraEntity || !modelEntity || !app) return;
+    const orbitCam = cameraEntity.script.orbitCamera;
+    if (!orbitCam) return;
+
+    const modelPos = modelEntity.getPosition();
+    const tempEnt = new pc.Entity();
+    tempEnt.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+    tempEnt.lookAt(modelPos);
+
+    const dist = new pc.Vec3().sub2(
+      new pc.Vec3(chosenCameraX, chosenCameraY, chosenCameraZ),
+      modelPos
+    ).length();
+
+    cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+    cameraEntity.lookAt(modelPos);
+
+    orbitCam.pivotPoint = modelPos.clone();
+    orbitCam._targetDistance = dist;
+    orbitCam._distance       = dist;
+
+    const rot = tempEnt.getRotation();
+    const fwd = new pc.Vec3();
+    rot.transformVector(pc.Vec3.FORWARD, fwd);
+
+    const yaw = Math.atan2(-fwd.x, -fwd.z) * pc.math.RAD_TO_DEG;
+    const yawQuat = new pc.Quat().setFromEulerAngles(0, -yaw, 0);
+    const rotNoYaw = new pc.Quat().mul2(yawQuat, rot);
+    const fNoYaw = new pc.Vec3();
+    rotNoYaw.transformVector(pc.Vec3.FORWARD, fNoYaw);
+    const pitch = Math.atan2(fNoYaw.y, -fNoYaw.z) * pc.math.RAD_TO_DEG;
+
+    orbitCam._targetYaw   = yaw;
+    orbitCam._yaw         = yaw;
+    orbitCam._targetPitch = pitch;
+    orbitCam._pitch       = pitch;
+    orbitCam._updatePosition && orbitCam._updatePosition();
+
+    tempEnt.destroy();
+  } catch (e) {
+    console.error("Error resetting camera:", e);
+  }
 }
 
 export function cleanupViewer() {
-    if (app) {
-        try {
-            app.destroy();
-        } catch {}
-        app = null;
-    }
-    cameraEntity = null;
-    modelEntity  = null;
-    viewerInitialized = false;
-
-    if (resizeObserver) {
-        resizeObserver.disconnect();
-        resizeObserver = null;
-    }
-}
+  if (app) {
+    try {
+      app.destroy();
+    } catch {}
+    app = null;
+  }
+  cameraEntity = null;
+  modelEntity  = null;
+  viewerInitialized = false;
+
+  if (resizeObserver) {
+    resizeObserver.disconnect();
+    resizeObserver = null;
+  }
+}