Update js_scripts/index.js

js_scripts/index.js

@@ -1,66 +1,762 @@
-// Fix for cameraXPhone not working on mobile devices in PlayCanvas implementation
+// Store the current script reference before the async function runs
+const currentScriptTag = document.currentScript;
 
-// The key issue is in the camera setup section of your PlayCanvas viewer
-// Make sure these changes are applied to the camera creation code
-// Look for the section where cameraEntity is created and positioned
+(async function() {
+  // Import PlayCanvas
+  const pc = await import("https://cdn.skypack.dev/[email protected]");
+  window.pc = pc;
+  
+  // Find the script tag using a more reliable method
+  let scriptTag = currentScriptTag;
+  
+  // Fallback method if currentScriptTag is null
+  if (!scriptTag) {
+    const scripts = document.getElementsByTagName('script');
+    for (let i = 0; i < scripts.length; i++) {
+      if (scripts[i].src.includes('index.js') && scripts[i].hasAttribute('data-config')) {
+        scriptTag = scripts[i];
+        break;
+      }
+    }
+    
+    // If still not found, try the last script on the page
+    if (!scriptTag && scripts.length > 0) {
+      scriptTag = scripts[scripts.length - 1];
+    }
+  }
+  
+  // Check if we found a script tag
+  if (!scriptTag) {
+    console.error("Could not find the script tag with data-config attribute.");
+    return;
+  }
+  
+  const configUrl = scriptTag.getAttribute("data-config");
+  let config = {};
+  if (configUrl) {
+    try {
+      const response = await fetch(configUrl);
+      config = await response.json();
+    } catch (error) {
+      console.error("Error loading config file:", error);
+      return;
+    }
+  } else {
+    console.error("No config file provided. Please set a data-config attribute on the script tag.");
+    return;
+  }
 
-// Create camera entity
-cameraEntity = new pc.Entity('camera');
-cameraEntity.addComponent('camera', {
-  clearColor: new pc.Color(
-    config.canvas_background ? parseInt(config.canvas_background.substr(1, 2), 16) / 255 : 0,
-    config.canvas_background ? parseInt(config.canvas_background.substr(3, 2), 16) / 255 : 0,
-    config.canvas_background ? parseInt(config.canvas_background.substr(5, 2), 16) / 255 : 0
-  ),
-  toneMapping: pc.TONEMAP_ACES
-});
+  // Load the external CSS file if provided in the config.
+  if (config.css_url) {
+    const linkEl = document.createElement("link");
+    linkEl.rel = "stylesheet";
+    linkEl.href = config.css_url;
+    document.head.appendChild(linkEl);
+  }
 
-// Log the chosen camera position for debugging
-console.log(`Setting camera position for ${isMobile ? 'mobile' : 'desktop'}: (${chosenCameraX}, ${chosenCameraY}, ${chosenCameraZ})`);
+  // --- Outer scope variables ---
+  let cameraEntity = null;
+  let app = null;
+  let modelEntity = null;
+  let viewerInitialized = false;
+  let wheelHandlers = [];
+  let resizeHandler = null;
+  let progressChecker = null;
+  
+  // Generate a unique identifier for this widget instance.
+  const instanceId = Math.random().toString(36).substr(2, 8);
+  
+  // Read configuration values from the JSON file.
+  const gifUrl = config.gif_url;
+  const plyUrl = config.ply_url;
+  
+  // Camera constraint parameters
+  const minZoom = parseFloat(config.minZoom || "1");
+  const maxZoom = parseFloat(config.maxZoom || "20");
+  const minAngle = parseFloat(config.minAngle || "-45");
+  const maxAngle = parseFloat(config.maxAngle || "90");
+  const minAzimuth = config.minAzimuth !== undefined ? parseFloat(config.minAzimuth) : -360;
+  const maxAzimuth = config.maxAzimuth !== undefined ? parseFloat(config.maxAzimuth) : 360;
+  
+  // Model position, scale, and rotation parameters
+  const modelX = config.modelX !== undefined ? parseFloat(config.modelX) : 0;
+  const modelY = config.modelY !== undefined ? parseFloat(config.modelY) : 0;
+  const modelZ = config.modelZ !== undefined ? parseFloat(config.modelZ) : 0;
+  
+  const modelScale = config.modelScale !== undefined ? parseFloat(config.modelScale) : 1;
+  
+  const modelRotationX = config.modelRotationX !== undefined ? parseFloat(config.modelRotationX) : 0;
+  const modelRotationY = config.modelRotationY !== undefined ? parseFloat(config.modelRotationY) : 0;
+  const modelRotationZ = config.modelRotationZ !== undefined ? parseFloat(config.modelRotationZ) : 0;
+  
+  // Direct camera coordinates
+  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;
+  
+  // Camera coordinates for mobile devices
+  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;
 
-// Set camera position directly using X, Y, Z coordinates from config
-cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
-cameraEntity.lookAt(modelEntity.getPosition());
+  // Detect if the device is iOS.
+  const isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+  // Also detect Android devices.
+  const isMobile = isIOS || /Android/i.test(navigator.userAgent);
+  
+  // Choose the appropriate coordinates based on device type
+  const chosenCameraX = isMobile ? cameraXPhone : cameraX;
+  const chosenCameraY = isMobile ? cameraYPhone : cameraY;
+  const chosenCameraZ = isMobile ? cameraZPhone : cameraZ;
+  
+  console.log(`Device detected: ${isMobile ? 'Mobile' : 'Desktop'}`);
+  console.log(`Camera coordinates chosen: (${chosenCameraX}, ${chosenCameraY}, ${chosenCameraZ})`);
+  
+  // Determine the aspect ratio.
+  let aspectPercent = "100%";
+  if (config.aspect) {
+    if (config.aspect.indexOf(":") !== -1) {
+      const parts = config.aspect.split(":");
+      const w = parseFloat(parts[0]);
+      const h = parseFloat(parts[1]);
+      if (!isNaN(w) && !isNaN(h) && w > 0) {
+        aspectPercent = (h / w * 100) + "%";
+      }
+    } else {
+      const aspectValue = parseFloat(config.aspect);
+      if (!isNaN(aspectValue) && aspectValue > 0) {
+        aspectPercent = (100 / aspectValue) + "%";
+      }
+    }
+  } else {
+    const parentContainer = scriptTag.parentNode;
+    const containerWidth = parentContainer.offsetWidth;
+    const containerHeight = parentContainer.offsetHeight;
+    if (containerWidth > 0 && containerHeight > 0) {
+      aspectPercent = (containerHeight / containerWidth * 100) + "%";
+    }
+  }
+  
+  // Create the widget container.
+  const widgetContainer = document.createElement('div');
+  widgetContainer.id = 'ply-widget-container-' + instanceId;
+  widgetContainer.classList.add('ply-widget-container');
+  // Add a mobile class if on a phone.
+  if (isMobile) {
+    widgetContainer.classList.add('mobile');
+  }
+  // Set inline style for aspect ratio.
+  widgetContainer.style.height = "0";
+  widgetContainer.style.paddingBottom = aspectPercent;
 
-// The resetCamera function should also be updated to use the correct values:
-function resetCamera() {
-  if (!cameraEntity || !modelEntity || !app) return;
-  
-  try {
-    // Get the orbit camera script
-    const orbitCam = cameraEntity.script.orbitCamera;
-    if (!orbitCam) return;
-    
-    // Store model position
-    const modelPos = modelEntity.getPosition();
-    
-    console.log(`Reset camera position for ${isMobile ? 'mobile' : 'desktop'}: (${chosenCameraX}, ${chosenCameraY}, ${chosenCameraZ})`);
-    
-    // 1. Create a temporary entity to help calculate new values
-    const tempEntity = new pc.Entity();
-    tempEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
-    tempEntity.lookAt(modelPos);
-    
-    // 2. Calculate the distance between camera and model
-    const distance = new pc.Vec3().sub2(
-      new pc.Vec3(chosenCameraX, chosenCameraY, chosenCameraZ),
-      modelPos
-    ).length();
-    
-    // 3. Set camera position
-    cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
-    cameraEntity.lookAt(modelPos);
-    
-    // 4. Update the orbit camera's pivot point
-    orbitCam.pivotPoint = new pc.Vec3(modelPos.x, modelPos.y, modelPos.z);
-    
-    // 5. Set the distance
-    orbitCam._targetDistance = distance;
-    orbitCam._distance = distance;
-    
-    // Rest of your resetCamera function...
-    // ...
-  } catch (error) {
-    console.error("Error resetting camera:", error);
+  widgetContainer.innerHTML = `
+    <!-- GIF Preview Container -->
+    <div id="gif-preview-container-${instanceId}" class="gif-preview-container">
+      <img id="preview-image-${instanceId}" alt="Preview" crossorigin="anonymous">
+    </div>
+    <!-- Viewer Container -->
+    <div id="viewer-container-${instanceId}" class="viewer-container" style="display: none;">
+      <canvas id="canvas-${instanceId}" class="ply-canvas"></canvas>
+      <div id="progress-dialog-${instanceId}" class="progress-dialog">
+        <progress id="progress-indicator-${instanceId}" max="100" value="0"></progress>
+      </div>
+      <button id="close-btn-${instanceId}" class="widget-button close-btn">X</button>
+      <button id="fullscreen-toggle-${instanceId}" class="widget-button fullscreen-toggle">⇱</button>
+      <button id="help-toggle-${instanceId}" class="widget-button help-toggle">?</button>
+      <button id="reset-camera-btn-${instanceId}" class="widget-button reset-camera-btn">
+        <span class="reset-icon">⟲</span>
+      </button>
+      <div id="menu-content-${instanceId}" class="menu-content"></div>
+    </div>
+  `;
+  scriptTag.parentNode.appendChild(widgetContainer);
+  
+  // Grab element references.
+  const gifPreview = document.getElementById('gif-preview-container-' + instanceId);
+  const viewerContainer = document.getElementById('viewer-container-' + instanceId);
+  const previewImage = document.getElementById('preview-image-' + instanceId);
+  const closeBtn = document.getElementById('close-btn-' + instanceId);
+  const fullscreenToggle = document.getElementById('fullscreen-toggle-' + instanceId);
+  const helpToggle = document.getElementById('help-toggle-' + instanceId);
+  const resetCameraBtn = document.getElementById('reset-camera-btn-' + instanceId);
+  const menuContent = document.getElementById('menu-content-' + instanceId);
+  const canvas = document.getElementById('canvas-' + instanceId);
+  const progressDialog = document.getElementById('progress-dialog-' + instanceId);
+  const progressIndicator = document.getElementById('progress-indicator-' + instanceId);
+  
+  // Flag to track if mouse is over the viewer
+  let isMouseOverViewer = false;
+  
+  // Add mouse hover tracking for the viewer container
+  viewerContainer.addEventListener('mouseenter', function() {
+    isMouseOverViewer = true;
+  });
+  
+  viewerContainer.addEventListener('mouseleave', function() {
+    isMouseOverViewer = false;
+  });
+  
+  // Set help instructions based on device type.
+  if (isMobile) {
+    menuContent.innerHTML = `
+      - Pour vous déplacer, glissez deux doigts sur l'écran.<br>
+      - Pour orbiter, utilisez un doigt.<br>
+      - Pour zoomer, pincez avec deux doigts.
+    `;
+  } else {
+    menuContent.innerHTML = `
+      - orbitez avec le clic droit<br>
+      - zoomez avec la molette<br>
+      - déplacez vous avec le clic gauche
+    `;
+  }
+  
+  // Handle GIF configuration
+  if (gifUrl) {
+    previewImage.src = gifUrl;
+    gifPreview.style.display = 'block';
+    viewerContainer.style.display = 'none';
+  } else {
+    gifPreview.style.display = 'none';
+    viewerContainer.style.display = 'block';
+    closeBtn.style.display = 'none';
+    // Initialize the viewer only when needed
+    setTimeout(() => {
+      initializeViewer();
+    }, 100);
+  }
+  
+  // --- Button Event Handlers ---
+  if (gifUrl) {
+    // Add click event to the GIF container
+    gifPreview.addEventListener('click', function() {
+      console.log("GIF preview clicked, showing 3D viewer");
+      gifPreview.style.display = 'none';
+      viewerContainer.style.display = 'block';
+      
+      // Make sure we're not initializing again if already done
+      if (!viewerInitialized) {
+        initializeViewer();
+      }
+    });
   }
-}
+  
+  // Function to clean up the viewer completely
+  function cleanupViewer() {
+    console.log("Starting viewer cleanup...");
+    
+    // Clear any running intervals
+    if (progressChecker) {
+      clearInterval(progressChecker);
+      progressChecker = null;
+    }
+    
+    // Remove wheel event listeners
+    for (const handler of wheelHandlers) {
+      const [element, func] = handler;
+      element.removeEventListener('wheel', func, { passive: false });
+    }
+    wheelHandlers = [];
+    
+    // Remove resize handler if it exists
+    if (resizeHandler) {
+      window.removeEventListener('resize', resizeHandler);
+      resizeHandler = null;
+    }
+    
+    // Reset the canvas context
+    if (canvas) {
+      const ctx = canvas.getContext('webgl2') || canvas.getContext('webgl');
+      if (ctx && ctx.getExtension('WEBGL_lose_context')) {
+        try {
+          ctx.getExtension('WEBGL_lose_context').loseContext();
+        } catch (e) {
+          console.error("Error releasing WebGL context:", e);
+        }
+      }
+    }
+    
+    // Destroy PlayCanvas app if it exists
+    if (app) {
+      try {
+        app.destroy();
+      } catch (e) {
+        console.error("Error destroying PlayCanvas app:", e);
+      }
+      app = null;
+    }
+    
+    // Reset entities
+    cameraEntity = null;
+    modelEntity = null;
+    
+    // Mark the viewer as not initialized
+    viewerInitialized = false;
+    
+    console.log("Viewer cleanup complete");
+  }
+  
+  // Close button event handler
+  closeBtn.addEventListener('click', function() {
+    console.log("Close button clicked");
+    
+    // Handle fullscreen exit
+    if (document.fullscreenElement === widgetContainer) {
+      if (document.exitFullscreen) {
+        document.exitFullscreen();
+      }
+    }
+    if (widgetContainer.classList.contains('fake-fullscreen')) {
+      widgetContainer.classList.remove('fake-fullscreen');
+      fullscreenToggle.textContent = '⇱';
+    }
+    
+    // Clean up the viewer
+    cleanupViewer();
+    
+    // Hide viewer and show GIF
+    viewerContainer.style.display = 'none';
+    gifPreview.style.display = 'block';
+  });
+  
+  // Fullscreen toggle handler
+  fullscreenToggle.addEventListener('click', function() {
+    if (isIOS) {
+      if (!widgetContainer.classList.contains('fake-fullscreen')) {
+        widgetContainer.classList.add('fake-fullscreen');
+      } else {
+        widgetContainer.classList.remove('fake-fullscreen');
+        resetCamera();
+      }
+      fullscreenToggle.textContent = widgetContainer.classList.contains('fake-fullscreen') ? '⇲' : '⇱';
+    } else {
+      if (!document.fullscreenElement) {
+        if (widgetContainer.requestFullscreen) {
+          widgetContainer.requestFullscreen();
+        } else if (widgetContainer.webkitRequestFullscreen) {
+          widgetContainer.webkitRequestFullscreen();
+        } else if (widgetContainer.mozRequestFullScreen) {
+          widgetContainer.mozRequestFullScreen();
+        } else if (widgetContainer.msRequestFullscreen) {
+          widgetContainer.msRequestFullscreen();
+        }
+      } else {
+        if (document.exitFullscreen) {
+          document.exitFullscreen();
+        }
+      }
+    }
+  });
+  
+  // Listen for native fullscreen changes.
+  document.addEventListener('fullscreenchange', function() {
+    if (document.fullscreenElement === widgetContainer) {
+      fullscreenToggle.textContent = '⇲';
+      widgetContainer.style.height = '100%';
+      widgetContainer.style.paddingBottom = '0';
+      resetCamera();
+    } else {
+      fullscreenToggle.textContent = '⇱';
+      widgetContainer.style.height = '0';
+      widgetContainer.style.paddingBottom = aspectPercent;
+      resetCamera();
+    }
+  });
+  
+  // Help toggle button
+  helpToggle.addEventListener('click', function(e) {
+    e.stopPropagation();
+    menuContent.style.display = (menuContent.style.display === 'block') ? 'none' : 'block';
+  });
+  
+  // --- Camera Reset Function ---
+  function resetCamera() {
+    if (!cameraEntity || !modelEntity || !app) {
+      console.log("Cannot reset camera - missing entities or app");
+      return;
+    }
+    
+    try {
+      // Get the orbit camera script
+      const orbitCam = cameraEntity.script.orbitCamera;
+      if (!orbitCam) {
+        console.log("Cannot reset camera - missing orbit camera script");
+        return;
+      }
+      
+      console.log(`Resetting camera to: (${chosenCameraX}, ${chosenCameraY}, ${chosenCameraZ}) for ${isMobile ? 'mobile' : 'desktop'}`);
+      
+      // Store model position
+      const modelPos = modelEntity.getPosition();
+      
+      // 1. Create a temporary entity to help calculate new values
+      const tempEntity = new pc.Entity();
+      tempEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+      tempEntity.lookAt(modelPos);
+      
+      // 2. Calculate the distance between camera and model
+      const distance = new pc.Vec3().sub2(
+        new pc.Vec3(chosenCameraX, chosenCameraY, chosenCameraZ),
+        modelPos
+      ).length();
+      
+      // 3. Set camera position
+      cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+      cameraEntity.lookAt(modelPos);
+      
+      // 4. Update the orbit camera's pivot point
+      orbitCam.pivotPoint = new pc.Vec3(modelPos.x, modelPos.y, modelPos.z);
+      
+      // 5. Set the distance
+      orbitCam._targetDistance = distance;
+      orbitCam._distance = distance;
+      
+      // 6. Calculate and set yaw and pitch from the camera's rotation
+      const rotation = tempEntity.getRotation();
+      const tempForward = new pc.Vec3();
+      rotation.transformVector(pc.Vec3.FORWARD, tempForward);
+      
+      const yaw = Math.atan2(-tempForward.x, -tempForward.z) * pc.math.RAD_TO_DEG;
+      
+      const yawQuat = new pc.Quat().setFromEulerAngles(0, -yaw, 0);
+      const rotWithoutYaw = new pc.Quat().mul2(yawQuat, rotation);
+      const forwardWithoutYaw = new pc.Vec3();
+      rotWithoutYaw.transformVector(pc.Vec3.FORWARD, forwardWithoutYaw);
+      const pitch = Math.atan2(forwardWithoutYaw.y, -forwardWithoutYaw.z) * pc.math.RAD_TO_DEG;
+      
+      // Set yaw and pitch directly on internal variables
+      orbitCam._targetYaw = yaw;
+      orbitCam._yaw = yaw;
+      orbitCam._targetPitch = pitch;
+      orbitCam._pitch = pitch;
+      
+      // Force update
+      if (typeof orbitCam._updatePosition === 'function') {
+        orbitCam._updatePosition();
+      }
+      
+      // Clean up
+      tempEntity.destroy();
+      
+      console.log("Camera reset complete");
+      
+    } catch (error) {
+      console.error("Error resetting camera:", error);
+    }
+  }
+  
+  // Reset camera button event handler
+  resetCameraBtn.addEventListener('click', function() {
+    console.log("Reset camera button clicked");
+    resetCamera();
+  });
+  
+  // Escape key handler for fullscreen exit
+  document.addEventListener('keydown', function(e) {
+    if (e.key === 'Escape' || e.key === 'Esc') {
+      let wasFullscreen = false;
+      if (document.fullscreenElement === widgetContainer) {
+        wasFullscreen = true;
+        if (document.exitFullscreen) {
+          document.exitFullscreen();
+        }
+      }
+      if (widgetContainer.classList.contains('fake-fullscreen')) {
+        wasFullscreen = true;
+        widgetContainer.classList.remove('fake-fullscreen');
+        fullscreenToggle.textContent = '⇱';
+      }
+      if (wasFullscreen) {
+        resetCamera();
+      }
+    }
+  });
+  
+  // --- Prevent app from hijacking all wheel events ---
+  function setupWheelHandlers() {
+    // First remove any existing handlers
+    for (const handler of wheelHandlers) {
+      const [element, func] = handler;
+      element.removeEventListener('wheel', func, { passive: false });
+    }
+    wheelHandlers = [];
+    
+    // Create new wheel handler
+    const handleWheel = function(event) {
+      // Check if mouse is over the viewer
+      if (!isMouseOverViewer) {
+        // Allow normal page scrolling
+        return true;
+      }
+      
+      // Otherwise apply zooming, but prevent default only for viewer area
+      event.stopPropagation();
+      
+      if (cameraEntity && cameraEntity.script && cameraEntity.script.orbitCamera) {
+        const camera = cameraEntity.camera;
+        const orbitCamera = cameraEntity.script.orbitCamera;
+        const sensitivity = cameraEntity.script.orbitCameraInputMouse ? 
+                            cameraEntity.script.orbitCameraInputMouse.distanceSensitivity || 0.4 : 0.4;
+        
+        if (camera.projection === pc.PROJECTION_PERSPECTIVE) {
+          orbitCamera.distance -= event.deltaY * 0.01 * sensitivity * (orbitCamera.distance * 0.1);
+        } else {
+          orbitCamera.orthoHeight -= event.deltaY * 0.01 * sensitivity * (orbitCamera.orthoHeight * 0.1);
+        }
+        
+        event.preventDefault();
+      }
+    };
+    
+    // Add wheel handlers and store references for cleanup
+    viewerContainer.addEventListener('wheel', handleWheel, { passive: false });
+    canvas.addEventListener('wheel', handleWheel, { passive: false });
+    
+    // Store handlers for later cleanup
+    wheelHandlers.push([viewerContainer, handleWheel]);
+    wheelHandlers.push([canvas, handleWheel]);
+    
+    console.log("Wheel handlers set up");
+  }
+  
+  // --- Initialize the 3D PLY Viewer using PlayCanvas ---
+  async function initializeViewer() {
+    // Skip initialization if already initialized
+    if (viewerInitialized || app) {
+      console.log("Viewer already initialized or app exists, skipping initialization");
+      return;
+    }
+    
+    console.log("Initializing PLY viewer...");
+    progressDialog.style.display = 'block';
+    progressIndicator.value = 0;
+    
+    // Initialize PlayCanvas
+    const deviceType = "webgl2";
+    const gfxOptions = {
+      deviceTypes: [deviceType],
+      glslangUrl: `https://playcanvas.vercel.app/static/lib/glslang/glslang.js`,
+      twgslUrl: `https://playcanvas.vercel.app/static/lib/twgsl/twgsl.js`,
+      antialias: false
+    };
+    
+    try {
+      // Create graphics device
+      const device = await pc.createGraphicsDevice(canvas, gfxOptions);
+      device.maxPixelRatio = Math.min(window.devicePixelRatio, 2);
+      
+      // Create app
+      const createOptions = new pc.AppOptions();
+      createOptions.graphicsDevice = device;
+      createOptions.mouse = new pc.Mouse(canvas);
+      createOptions.touch = new pc.TouchDevice(canvas);
+      createOptions.componentSystems = [
+        pc.RenderComponentSystem,
+        pc.CameraComponentSystem,
+        pc.LightComponentSystem,
+        pc.ScriptComponentSystem,
+        pc.GSplatComponentSystem
+      ];
+      createOptions.resourceHandlers = [
+        pc.TextureHandler,
+        pc.ContainerHandler,
+        pc.ScriptHandler,
+        pc.GSplatHandler
+      ];
+      
+      app = new pc.AppBase(canvas);
+      app.init(createOptions);
+      
+      // Set canvas fill mode to match the container
+      app.setCanvasFillMode(pc.FILLMODE_NONE);
+      app.setCanvasResolution(pc.RESOLUTION_AUTO);
+      
+      // Set scene options
+      app.scene.exposure = 0.8;
+      app.scene.toneMapping = pc.TONEMAP_ACES;
+      
+      // Handle window resizing
+      const resize = () => {
+        if (app) {
+          app.resizeCanvas(canvas.clientWidth, canvas.clientHeight);
+        }
+      };
+      
+      // Store resize handler for cleanup
+      resizeHandler = resize;
+      window.addEventListener('resize', resizeHandler);
+      
+      // Add cleanup when app is destroyed
+      app.on('destroy', () => {
+        if (resizeHandler) {
+          window.removeEventListener('resize', resizeHandler);
+          resizeHandler = null;
+        }
+        if (progressChecker) {
+          clearInterval(progressChecker);
+          progressChecker = null;
+        }
+      });
+      
+      // Load required assets
+      const assets = {
+        model: new pc.Asset('gsplat', 'gsplat', { url: plyUrl }),
+        orbit: new pc.Asset('script', 'script', { url: `https://bilca-visionneur-play-canva-2.static.hf.space/orbit-camera.js` })
+      };
+      
+      // Create asset loader with progress tracking
+      const assetListLoader = new pc.AssetListLoader(Object.values(assets), app.assets);
+      
+      // Handle asset loading progress
+      let lastProgress = 0;
+      assets.model.on('load', (asset) => {
+        progressDialog.style.display = 'none';
+        console.log("Model loaded successfully");
+      });
+      
+      assets.model.on('error', (err) => {
+        console.error("Error loading PLY file:", err);
+        progressDialog.innerHTML = `<p style="color: red">Error loading model: ${err}</p>`;
+        viewerInitialized = false;
+      });
+      
+      // Set up progress monitoring
+      const checkProgress = () => {
+        if (!app) {
+          clearInterval(progressChecker);
+          progressChecker = null;
+          return;
+        }
+        
+        if (app && assets.model.resource) {
+          progressIndicator.value = 100;
+          clearInterval(progressChecker);
+          progressChecker = null;
+          progressDialog.style.display = 'none';
+        } else if (assets.model.loading) {
+          // Increment progress for visual feedback
+          lastProgress += 2;
+          if (lastProgress > 90) lastProgress = 90; // Cap at 90% until fully loaded
+          progressIndicator.value = lastProgress;
+        }
+      };
+      
+      progressChecker = setInterval(checkProgress, 100);
+      
+      // Load assets and set up scene
+      assetListLoader.load(() => {
+        if (!app) {
+          console.log("App was destroyed during asset loading");
+          return;
+        }
+        
+        app.start();
+        
+        // Create model entity
+        modelEntity = new pc.Entity('model');
+        modelEntity.addComponent('gsplat', {
+          asset: assets.model
+        });
+        
+        // Position the model using JSON parameters
+        modelEntity.setLocalPosition(modelX, modelY, modelZ);
+        modelEntity.setLocalEulerAngles(modelRotationX, modelRotationY, modelRotationZ);
+        modelEntity.setLocalScale(modelScale, modelScale, modelScale);
+        
+        app.root.addChild(modelEntity);
+        
+        // Create camera entity
+        cameraEntity = new pc.Entity('camera');
+        cameraEntity.addComponent('camera', {
+          clearColor: new pc.Color(
+            config.canvas_background ? parseInt(config.canvas_background.substr(1, 2), 16) / 255 : 0,
+            config.canvas_background ? parseInt(config.canvas_background.substr(3, 2), 16) / 255 : 0,
+            config.canvas_background ? parseInt(config.canvas_background.substr(5, 2), 16) / 255 : 0
+          ),
+          toneMapping: pc.TONEMAP_ACES
+        });
+        
+        // Set camera position directly using X, Y, Z coordinates from config
+        // Log the chosen camera position for debugging
+        console.log(`Setting camera position for ${isMobile ? 'mobile' : 'desktop'}: (${chosenCameraX}, ${chosenCameraY}, ${chosenCameraZ})`);
+        
+        cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+        cameraEntity.lookAt(modelEntity.getPosition());
+        
+        // Add orbit camera script for interactive navigation
+        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,
+            frameOnStart: false // Don't auto-frame since we're setting position directly
+          }
+        });
+        
+        // Create input controllers but don't add mouse wheel handling - we handle that separately
+        cameraEntity.script.create('orbitCameraInputMouse', {
+          attributes: {
+            orbitSensitivity: isMobile ? 0.6 : 0.3,
+            distanceSensitivity: isMobile ? 0.5 : 0.4
+          }
+        });
+        
+        // Disable wheel event in the orbit camera input
+        if (cameraEntity.script.orbitCameraInputMouse) {
+          // Override mouse wheel to do nothing - we handle wheel events separately
+          cameraEntity.script.orbitCameraInputMouse.onMouseWheel = function() {};
+        }
+        
+        // Add touch input controller
+        cameraEntity.script.create('orbitCameraInputTouch', {
+          attributes: {
+            orbitSensitivity: 0.6,
+            distanceSensitivity: 0.5
+          }
+        });
+        
+        // Initialize the orbit controller
+        setTimeout(() => {
+          if (cameraEntity && cameraEntity.script && cameraEntity.script.orbitCamera) {
+            // Calculate distance from camera to model
+            const modelPos = modelEntity.getPosition();
+            const camPos = cameraEntity.getPosition();
+            const distanceVec = new pc.Vec3();
+            distanceVec.sub2(camPos, modelPos);
+            const distance = distanceVec.length();
+            
+            // Set up the orbit controller
+            cameraEntity.script.orbitCamera.pivotPoint.copy(modelPos);
+            cameraEntity.script.orbitCamera.distance = distance;
+            cameraEntity.script.orbitCamera._removeInertia();
+          }
+        }, 100);
+        
+        app.root.addChild(cameraEntity);
+        
+        // Initial resize to match container
+        resize();
+        
+        // Set up wheel handlers
+        setupWheelHandlers();
+        
+        // Hide progress dialog when everything is set up
+        progressDialog.style.display = 'none';
+        
+        // Mark viewer as initialized
+        viewerInitialized = true;
+        
+        console.log("PLY viewer initialization complete");
+      });
+      
+    } catch (error) {
+      console.error("Error initializing PlayCanvas viewer:", error);
+      progressDialog.innerHTML = `<p style="color: red">Error loading viewer: ${error.message}</p>`;
+      viewerInitialized = false;
+      app = null;