Create viewer.js

viewer.js

@@ -0,0 +1,410 @@
+// ==============================
+// viewer.js
+// ==============================
+
+let pc;            // will hold the PlayCanvas module once imported
+export let app = null;
+let cameraEntity   = null;
+let modelEntity    = null;
+let viewerInitialized = false;
+
+let chosenCameraX, chosenCameraY, chosenCameraZ;
+let minZoom, maxZoom, minAngle, maxAngle, minAzimuth, maxAzimuth, minPivotY, minY;
+let modelX, modelY, modelZ, modelScale, modelRotationX, modelRotationY, modelRotationZ;
+let plyUrl, glbUrl;
+
+/**
+ * initializeViewer(config, instanceId)
+ *
+ * - Dynamically imports PlayCanvas (once).
+ * - Creates a new <canvas id="canvas-<instanceId>"> inside the viewer container.
+ * - Sets up lights, model loading, camera + orbit controls, HDR, etc.
+ * - Exposes app, cameraEntity, modelEntity, so that interface.js can resize or reset.
+ * - Imports & initializes tooltip hotspots from tooltips.js.
+ */
+export async function initializeViewer(config, instanceId) {
+  if (viewerInitialized) return;
+
+  // Detect device type again (for camera coordinates & input sensitivity)
+  const isIOS    = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+  const isMobile = isIOS || /Android/i.test(navigator.userAgent);
+
+  // ─── 1. Read all relevant config values ───────────────────────────────────────
+  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 elements inside interface.js’s container ─────────────────────
+  const canvasId       = 'canvas-' + instanceId;
+  const progressDialog = document.getElementById('progress-dialog-' + instanceId);
+  const progressIndicator = document.getElementById('progress-indicator-' + instanceId);
+  const viewerContainerElem = document.getElementById('viewer-container-' + instanceId);
+
+  // ─── 3. Create a fresh <canvas> (removing any old one) ────────────────────────
+  let oldCanvas = document.getElementById(canvasId);
+  if (oldCanvas) {
+    oldCanvas.remove();
+  }
+  const newCanvas = document.createElement('canvas');
+  newCanvas.id = canvasId;
+  newCanvas.className = 'ply-canvas';
+  newCanvas.style.zIndex = "1";
+  viewerContainerElem.insertBefore(newCanvas, progressDialog);
+  const canvas = newCanvas;
+
+  // ─── 4. Add mouse‐wheel listener for zoom adjustments ────────────────────────
+  canvas.addEventListener('wheel', function(e) {
+    if (cameraEntity && cameraEntity.script && cameraEntity.script.orbitCamera) {
+      const orbitCam = cameraEntity.script.orbitCamera;
+      const sensitivity = (cameraEntity.script.orbitCameraInputMouse && cameraEntity.script.orbitCameraInputMouse.distanceSensitivity) || 0.4;
+
+      if (cameraEntity.camera.projection === pc.PROJECTION_PERSPECTIVE) {
+        orbitCam.distance -= e.deltaY * 0.01 * sensitivity * (orbitCam.distance * 0.1);
+      } else {
+        orbitCam.orthoHeight -= e.deltaY * 0.01 * sensitivity * (orbitCam.orthoHeight * 0.1);
+      }
+      e.preventDefault();
+      e.stopPropagation();
+    }
+  }, { passive: false });
+
+  progressDialog.style.display = 'block';
+
+  // ─── 5. Import PlayCanvas (only once) ─────────────────────────────────────────
+  if (!pc) {
+    pc = await import("https://esm.run/playcanvas");
+    window.pc = pc;
+  }
+
+  try {
+    // ─── 6. Create a GraphicsDevice + AppOptions ────────────────────────────────
+    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
+    };
+    const device = await pc.createGraphicsDevice(canvas, gfxOptions);
+    device.maxPixelRatio = Math.min(window.devicePixelRatio, 2);
+
+    const createOptions = new pc.AppOptions();
+    createOptions.graphicsDevice = device;
+    createOptions.mouse = new pc.Mouse(canvas);
+    createOptions.touch = new pc.TouchDevice(canvas);
+
+    // ─── ADD: include physics systems for collision-based picking ───────────────
+    createOptions.componentSystems = [
+      pc.RenderComponentSystem,
+      pc.CameraComponentSystem,
+      pc.LightComponentSystem,
+      pc.ScriptComponentSystem,
+      pc.GSplatComponentSystem,
+      pc.CollisionComponentSystem,
+      pc.RigidbodyComponentSystem
+    ];
+    createOptions.resourceHandlers = [
+      pc.TextureHandler,
+      pc.ContainerHandler,
+      pc.ScriptHandler,
+      pc.GSplatHandler
+    ];
+
+    // ─── REPLACED: use pc.Application (instead of deprecated / removed AppBase) ──
+    app = new pc.Application(canvas, createOptions);
+
+    // Configure application
+    app.setCanvasFillMode(pc.FILLMODE_NONE);
+    app.setCanvasResolution(pc.RESOLUTION_AUTO);
+    app.scene.exposure    = 0.5;
+    app.scene.toneMapping = pc.TONEMAP_ACES;
+
+    // ─── 7. Handle window‐resize for the PlayCanvas canvas ─────────────────────
+    const resizeCanvas = () => {
+      if (app) {
+        app.resizeCanvas(canvas.clientWidth, canvas.clientHeight);
+      }
+    };
+    window.addEventListener('resize', resizeCanvas);
+    app.on('destroy', () => {
+      window.removeEventListener('resize', resizeCanvas);
+    });
+
+    // ─── 8. Declare assets: PLY + orbit‐camera.js + GLB + HDR ───────────────────
+    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" }),
+      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 assetListLoader = new pc.AssetListLoader(Object.values(assets), app.assets);
+    let lastProgress = 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 checkProgress = () => {
+      if (assets.model.resource) {
+        progressIndicator.value = 100;
+        clearInterval(progressChecker);
+        progressDialog.style.display = 'none';
+      } else if (assets.model.loading) {
+        lastProgress += 2;
+        if (lastProgress > 90) lastProgress = 90;
+        progressIndicator.value = lastProgress;
+      }
+    };
+    const progressChecker = setInterval(checkProgress, 100);
+
+    // ─── 9. Once assets are loaded, build the scene ────────────────────────────
+    assetListLoader.load(async () => {
+      app.start();
+      app.scene.envAtlas = assets.hdr.resource;
+
+      // 9a. Create & position the model
+      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);
+
+      // 9b. Add a directional light
+      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
+      });
+      app.root.addChild(dirLight);
+      dirLight.setLocalEulerAngles(0, 0, 0);
+
+      // 9c. Instantiate the GLB “gallery” if any
+      const galleryEntity = assets.galerie.resource.instantiateRenderEntity();
+      app.root.addChild(galleryEntity);
+
+      // 9d. Create & configure the camera + orbit‐camera scripts
+      cameraEntity = new pc.Entity('camera');
+      cameraEntity.addComponent('camera', {
+        clearColor: config.canvas_background
+          ? parseInt(config.canvas_background.substr(1, 2), 16) / 255
+          : 0,
+        toneMapping: pc.TONEMAP_ACES
+      });
+      // *** Set initial position/orientation from config immediately ***
+      cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+      cameraEntity.lookAt(modelEntity.getPosition());
+
+      // Warn if camera is very far
+      const distanceCheck = new pc.Vec3().sub2(
+        cameraEntity.getPosition(),
+        modelEntity.getPosition()
+      ).length();
+      if (distanceCheck > 100) {
+        console.warn("Warning: Camera is far from model; it might not be visible");
+      }
+
+      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
+        }
+      });
+      // Disable default onMouseWheel in orbitCameraInputMouse so we handle it ourselves
+      if (cameraEntity.script.orbitCameraInputMouse) {
+        cameraEntity.script.orbitCameraInputMouse.onMouseWheel = function() {};
+      }
+      cameraEntity.script.create('orbitCameraInputTouch', {
+        attributes: {
+          orbitSensitivity: 0.6,
+          distanceSensitivity: 0.5
+        }
+      });
+
+      app.root.addChild(cameraEntity);
+
+      // ─── NEW: Ensure camera is reset on the first frame ───────────────────────
+      app.once('update', function() {
+        // Call existing resetViewerCamera() so that pivot, yaw/pitch, and distance get  
+        // recalculated correctly before the first render.
+        resetViewerCamera();
+      });
+
+      // 9e. Constrain camera’s Y so it never dips below minY
+      app.on('update', function(dt) {
+        if (cameraEntity) {
+          const pos = cameraEntity.getPosition();
+          if (pos.y < minY) {
+            cameraEntity.setPosition(pos.x, minY, pos.z);
+          }
+        }
+      });
+
+      // 9f. Resize canvas one last time to fit container
+      app.resizeCanvas(viewerContainerElem.clientWidth, viewerContainerElem.clientHeight);
+
+      // ─── NEW: Load & initialize the tooltips module ──────────────────────
+      try {
+        const tooltipsModule = await import('./tooltips.js');
+        tooltipsModule.initializeTooltips({
+          app,
+          cameraEntity,
+          modelEntity,
+          tooltipsUrl: config.tooltips_url,
+          defaultVisible: !!config.showTooltipsDefault,
+          moveDuration: config.tooltipMoveDuration || 0.6  // optional smooth‐move duration
+        });
+      } 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()
+ *
+ * Re‐centers the camera on the model, using the chosenCameraXYZ from config.
+ * Exactly the same math as in the old index.js‘s resetCamera().
+ */
+export function resetViewerCamera() {
+  try {
+    if (!cameraEntity || !modelEntity || !app) return;
+    const orbitCam = cameraEntity.script.orbitCamera;
+    if (!orbitCam) return;
+
+    const modelPos = modelEntity.getPosition();
+    // Create a temporary entity at chosenCameraX,Y,Z to compute yaw/pitch
+    const tempEntity = new pc.Entity();
+    tempEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+    tempEntity.lookAt(modelPos);
+
+    // Compute distance
+    const distance = new pc.Vec3().sub2(
+      new pc.Vec3(chosenCameraX, chosenCameraY, chosenCameraZ),
+      modelPos
+    ).length();
+
+    // Reposition camera
+    cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
+    cameraEntity.lookAt(modelPos);
+
+    orbitCam.pivotPoint = new pc.Vec3(modelPos.x, modelPos.y, modelPos.z);
+    orbitCam._targetDistance = distance;
+    orbitCam._distance       = distance;
+
+    // Compute yaw & pitch from the “tempEntity”
+    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;
+
+    orbitCam._targetYaw   = yaw;
+    orbitCam._yaw         = yaw;
+    orbitCam._targetPitch = pitch;
+    orbitCam._pitch       = pitch;
+    if (typeof orbitCam._updatePosition === 'function') {
+      orbitCam._updatePosition();
+    }
+
+    tempEntity.destroy();
+  } catch (error) {
+    console.error("Error resetting camera:", error);
+  }
+}
+
+/**
+ * cleanupViewer()
+ *
+ * Destroys the PlayCanvas `app` (if it exists) and clears references.  Called when the user clicks “X”.
+ */
+export function cleanupViewer() {
+  if (app) {
+    try {
+      app.destroy();
+    } catch (e) {
+      console.error("Error destroying PlayCanvas app:", e);
+    }
+    app = null;
+  }
+  cameraEntity   = null;
+  modelEntity    = null;
+  viewerInitialized = false;
+}