deplacement_dans_env/viewer_pr_env.js

// viewer_pr_env.js
// ==============================

/* -------------------------------------------
   Utils
-------------------------------------------- */

async function loadImageAsTexture(url, app) {
  return new Promise((resolve, reject) => {
    const img = new window.Image();
    img.crossOrigin = "anonymous";
    img.onload = function () {
      const tex = new pc.Texture(app.graphicsDevice, {
        width: img.width,
        height: img.height,
        format: pc.PIXELFORMAT_R8_G8_B8_A8
      });
      tex.setSource(img);
      resolve(tex);
    };
    img.onerror = reject;
    img.src = url;
  });
}

// Patch global Image -> force CORS
(function () {
  const OriginalImage = window.Image;
  window.Image = function (...args) {
    const img = new OriginalImage(...args);
    img.crossOrigin = "anonymous";
    return img;
  };
})();

function hexToRgbaArray(hex) {
  try {
    hex = String(hex || "").replace("#", "");
    if (hex.length === 6) hex += "FF";
    if (hex.length !== 8) return [1, 1, 1, 1];
    const num = parseInt(hex, 16);
    return [
      ((num >> 24) & 0xff) / 255,
      ((num >> 16) & 0xff) / 255,
      ((num >> 8) & 0xff) / 255,
      (num & 0xff) / 255
    ];
  } catch (e) {
    console.warn("hexToRgbaArray error:", e);
    return [1, 1, 1, 1];
  }
}

// Parcours récursif d'une hiérarchie d'entités
function traverse(entity, callback) {
  callback(entity);
  if (entity.children) {
    entity.children.forEach((child) => traverse(child, callback));
  }
}

/* -------------------------------------------
   Chargement unique de ctrl_camera_pr_env.js
-------------------------------------------- */

async function ensureOrbitScriptsLoaded() {
  if (window.__PLY_ORBIT_LOADED__) return;
  if (window.__PLY_ORBIT_LOADING__) {
    await window.__PLY_ORBIT_LOADING__;
    return;
  }

  window.__PLY_ORBIT_LOADING__ = new Promise((resolve, reject) => {
    const s = document.createElement("script");
    // Script caméra libre + collisions (garde le nom public "orbitCamera")
    s.src = "https://mikafil-viewer-sgos.static.hf.space/deplacement_dans_env/ctrl_camera_pr_env.js";
    s.async = true;
    s.onload = () => {
      window.__PLY_ORBIT_LOADED__ = true;
      resolve();
    };
    s.onerror = (e) => {
      console.error("[viewer.js] Failed to load orbit-camera script", e);
      reject(e);
    };
    document.head.appendChild(s);
  });

  await window.__PLY_ORBIT_LOADING__;
}

/* -------------------------------------------
   State (par module = par instance importée)
-------------------------------------------- */

let pc;
export let app = null;
let cameraEntity = null;
let modelEntity = null; // gsplat principal (oeuvre)
let envEntity = null;   // GLB d'environnement / présentoir
let viewerInitialized = false;
let resizeObserver = null;

// paramètres courants de l'instance
let chosenCameraX, chosenCameraY, chosenCameraZ;
let distanceMin, minAngle, maxAngle, minAzimuth, maxAzimuth, minY;
let modelX, modelY, modelZ, modelScale, modelRotationX, modelRotationY, modelRotationZ;
let presentoirScaleX, presentoirScaleY, presentoirScaleZ;
let sogsUrl, glbUrl;
let color_bg_hex, color_bg, espace_expo_bool;

/* -------------------------------------------
   Initialisation
-------------------------------------------- */

export async function initializeViewer(config, instanceId) {
  // une seule initialisation par import
  if (viewerInitialized) return;

  const isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent);
  const isMobile = isIOS || /Android/i.test(navigator.userAgent);

  // --- Configuration ---
  sogsUrl = config.sogs_json_url || null;
  glbUrl = config.glb_url || null;

  // rétro-compat minZoom => distanceMin (conservé pour compat mais non utilisé par la free cam)
  distanceMin = config.minZoom !== undefined
    ? parseFloat(config.minZoom)
    : (config.distanceMin !== undefined ? parseFloat(config.distanceMin) : 1);

  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;
  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;

  // défauts à 1 (et non 0) pour éviter l'invisibilité si manquants
  presentoirScaleX = config.presentoirScaleX !== undefined ? parseFloat(config.presentoirScaleX) : 1;
  presentoirScaleY = config.presentoirScaleY !== undefined ? parseFloat(config.presentoirScaleY) : 1;
  presentoirScaleZ = config.presentoirScaleZ !== undefined ? parseFloat(config.presentoirScaleZ) : 1;

  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;

  color_bg_hex = config.canvas_background !== undefined ? config.canvas_background : "#FFFFFF";
  espace_expo_bool = config.espace_expo_bool !== undefined ? config.espace_expo_bool : false;
  color_bg = hexToRgbaArray(color_bg_hex);

  chosenCameraX = isMobile ? cameraXPhone : cameraX;
  chosenCameraY = isMobile ? cameraYPhone : cameraY;
  chosenCameraZ = isMobile ? cameraZPhone : cameraZ;

  // --- Prépare le canvas unique à cette instance ---
  const canvasId = "canvas-" + instanceId;
  const progressDialog = document.getElementById("progress-dialog-" + instanceId);
  const viewerContainer = document.getElementById("viewer-container-" + instanceId);

  const old = document.getElementById(canvasId);
  if (old) old.remove();

  const canvas = document.createElement("canvas");
  canvas.id = canvasId;
  canvas.className = "ply-canvas";
  canvas.style.width = "100%";
  canvas.style.height = "100%";
  canvas.setAttribute("tabindex", "0");
  viewerContainer.insertBefore(canvas, progressDialog);

  // interactions de base (éviter scroll/gestes par défaut sur le canvas)
  canvas.style.touchAction = "none";
  canvas.style.webkitTouchCallout = "none";
  canvas.addEventListener("gesturestart", (e) => e.preventDefault());
  canvas.addEventListener("gesturechange", (e) => e.preventDefault());
  canvas.addEventListener("gestureend", (e) => e.preventDefault());
  canvas.addEventListener("dblclick", (e) => e.preventDefault());
  canvas.addEventListener(
    "touchstart",
    (e) => {
      if (e.touches.length > 1) e.preventDefault();
    },
    { passive: false }
  );
  canvas.addEventListener(
    "wheel",
    (e) => { e.preventDefault(); },
    { passive: false }
  );

  // Bloque le scroll page uniquement quand le pointeur est sur le canvas
  const scrollKeys = new Set([ "ArrowUp","ArrowDown","ArrowLeft","ArrowRight","PageUp","PageDown","Home","End"," ","Space","Spacebar" ]);
  let isPointerOverCanvas = false;
  const focusCanvas = () => canvas.focus({ preventScroll: true });

  const onPointerEnter = () => { isPointerOverCanvas = true; focusCanvas(); };
  const onPointerLeave = () => {
    isPointerOverCanvas = false;
    if (document.activeElement === canvas) canvas.blur();
  };
  const onCanvasBlur = () => { isPointerOverCanvas = false; };

  canvas.addEventListener("pointerenter", onPointerEnter);
  canvas.addEventListener("pointerleave", onPointerLeave);
  canvas.addEventListener("mouseenter", onPointerEnter);
  canvas.addEventListener("mouseleave", onPointerLeave);
  canvas.addEventListener("mousedown", focusCanvas);
  canvas.addEventListener("touchstart", () => { focusCanvas(); }, { passive: false });
  canvas.addEventListener("blur", onCanvasBlur);

  const onKeyDownCapture = (e) => {
    if (!isPointerOverCanvas) return;
    if (scrollKeys.has(e.key) || scrollKeys.has(e.code)) e.preventDefault();
  };
  window.addEventListener("keydown", onKeyDownCapture, true);

  progressDialog.style.display = "block";

  // --- Charge PlayCanvas lib ESM (une par module/instance) ---
  if (!pc) {
    pc = await import("https://esm.run/playcanvas");
    window.pc = pc; // utile pour tooltips.js et debug
  }

  // --- Crée l'Application ---
  const device = await pc.createGraphicsDevice(canvas, {
    deviceTypes: ["webgl2"],
    glslangUrl: "https://playcanvas.vercel.app/static/lib/glslang/glslang.js",
    twgslUrl: "https://playcanvas.vercel.app/static/lib/twgsl/twgsl.js",
    antialias: false
  });
  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.keyboard = new pc.Keyboard(canvas); // scoping clavier au 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);

  resizeObserver = new ResizeObserver((entries) => {
    entries.forEach((entry) => {
      app.resizeCanvas(entry.contentRect.width, entry.contentRect.height);
    });
  });
  resizeObserver.observe(viewerContainer);

  window.addEventListener("resize", () =>
    app.resizeCanvas(viewerContainer.clientWidth, viewerContainer.clientHeight)
  );

  // Nettoyage complet
  app.on("destroy", () => {
    try { resizeObserver.disconnect(); } catch {}
    if (opts.keyboard && opts.keyboard.detach) opts.keyboard.detach();
    window.removeEventListener("keydown", onKeyDownCapture, true);

    canvas.removeEventListener("pointerenter", onPointerEnter);
    canvas.removeEventListener("pointerleave", onPointerLeave);
    canvas.removeEventListener("mouseenter", onPointerEnter);
    canvas.removeEventListener("mouseleave", onPointerLeave);
    canvas.removeEventListener("mousedown", focusCanvas);
    canvas.removeEventListener("touchstart", focusCanvas);
    canvas.removeEventListener("blur", onCanvasBlur);
  });

  // --- Enregistre les assets (SAUF orbit script : chargé globalement) ---
  const assets = {};
  if (sogsUrl) assets.sogs = new pc.Asset("gsplat", "gsplat", { url: sogsUrl });
  if (glbUrl)  assets.env  = new pc.Asset("env",   "container", { url: glbUrl });

  for (const k in assets) app.assets.add(assets[k]);

  const loader = new pc.AssetListLoader(Object.values(assets), app.assets);

  // Assure le chargement unique des scripts de caméra
  await ensureOrbitScriptsLoaded();

  loader.load(() => {
    app.start();
    progressDialog.style.display = "none";

    // --- Modèle principal (gsplat) ---
    if (assets.sogs) {
      modelEntity = new pc.Entity("model");
      modelEntity.addComponent("gsplat", { asset: assets.sogs });
      modelEntity.setLocalPosition(modelX, modelY, modelZ);
      modelEntity.setLocalEulerAngles(modelRotationX, modelRotationY, modelRotationZ);
      modelEntity.setLocalScale(modelScale, modelScale, modelScale);
      app.root.addChild(modelEntity);
    }

    // --- GLB Environnement / Présentoir (optionnel) ---
    if (assets.env && assets.env.resource) {
      const container = assets.env.resource; // pc.ContainerResource
      envEntity = container.instantiateRenderEntity({
        castShadows: false,
        receiveShadows: true
      });

      // Position/rotation/échelle (adaptables)
      envEntity.setLocalPosition(0, 0, 0);
      envEntity.setLocalEulerAngles(0, 0, 0);
      envEntity.setLocalScale(presentoirScaleX, presentoirScaleY, presentoirScaleZ);

      app.root.addChild(envEntity);
    }

    // Entité qui sert d'ancrage visuel (lookAt) : l'oeuvre si dispo, sinon l'env
    const focusVisual = modelEntity || envEntity;

    // Racine de collision pour la free cam : l'environnement GLB de préférence
    const collisionRoot = envEntity || modelEntity || null;

    // --- Caméra + scripts d’input (free cam + collisions) ---
    cameraEntity = new pc.Entity("camera");
    cameraEntity.addComponent("camera", {
      clearColor: new pc.Color(color_bg[0], color_bg[1], color_bg[2], color_bg[3]),
      nearClip: 0.001,
      farClip: 100
    });
    cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
    if (focusVisual) cameraEntity.lookAt(focusVisual.getPosition());
    cameraEntity.addComponent("script");

    // Prépare les attributs : les champs inconnus sont ignorés par le script
    const orbitAttrs = {
      // Collision root : active le blocage contre le GLB
      focusEntity: collisionRoot || undefined,

      // Inertie/angles (pitch clampé), yaw libre
      inertiaFactor: 0.2,
      pitchAngleMax: maxAngle,
      pitchAngleMin: minAngle,

      // Compat (ignorés par le free cam, mais gardés pour ne pas casser la config)
      distanceMin: distanceMin,
      yawAngleMax: maxAzimuth,
      yawAngleMin: minAzimuth,
      frameOnStart: false,

      // Contraintes position
      minY: minY
    };

    // Injecte la BBox uniquement si présente dans le config (évite Infinity explicite)
    const maybeNum = (v) => (v === undefined || v === null || v === "" ? undefined : parseFloat(v));
    const Xmin = maybeNum(config.Xmin);
    const Xmax = maybeNum(config.Xmax);
    const Ymin = maybeNum(config.Ymin);
    const Ymax = maybeNum(config.Ymax);
    const Zmin = maybeNum(config.Zmin);
    const Zmax = maybeNum(config.Zmax);

    if (Xmin !== undefined) orbitAttrs.Xmin = Xmin;
    if (Xmax !== undefined) orbitAttrs.Xmax = Xmax;
    if (Ymin !== undefined) orbitAttrs.Ymin = Ymin;
    if (Ymax !== undefined) orbitAttrs.Ymax = Ymax;
    if (Zmin !== undefined) orbitAttrs.Zmin = Zmin;
    if (Zmax !== undefined) orbitAttrs.Zmax = Zmax;

    // Paramètres collision optionnels depuis la config (sinon valeurs par défaut du script)
    if (config.collisionRadius !== undefined)    orbitAttrs.collisionRadius = parseFloat(config.collisionRadius);
    if (config.collisionEpsilon !== undefined)   orbitAttrs.collisionEpsilon = parseFloat(config.collisionEpsilon);
    if (config.moveSpeed !== undefined)          orbitAttrs.moveSpeed = parseFloat(config.moveSpeed);
    if (config.strafeSpeed !== undefined)        orbitAttrs.strafeSpeed = parseFloat(config.strafeSpeed);
    if (config.dollySpeed !== undefined)         orbitAttrs.dollySpeed = parseFloat(config.dollySpeed);

    cameraEntity.script.create("orbitCamera", { attributes: orbitAttrs });
    cameraEntity.script.create("orbitCameraInputMouse");
    cameraEntity.script.create("orbitCameraInputTouch");
    cameraEntity.script.create("orbitCameraInputKeyboard", { attributes: { acceleration: 1.0 } });
    app.root.addChild(cameraEntity);

    app.resizeCanvas(viewerContainer.clientWidth, viewerContainer.clientHeight);

    // Reset caméra une fois la première frame prête
    app.once("update", () => resetViewerCamera());

    // --- Tooltips (optionnels) ---
    try {
      if (config.tooltips_url) {
        import("./tooltips.js")
          .then((tooltipsModule) => {
            tooltipsModule.initializeTooltips({
              app,
              cameraEntity,
              modelEntity: focusVisual,
              tooltipsUrl: config.tooltips_url,
              defaultVisible: !!config.showTooltipsDefault,
              moveDuration: config.tooltipMoveDuration || 0.6
            });
          })
          .catch(() => { /* optional */ });
      }
    } catch (e) { /* optional */ }

    viewerInitialized = true;
  });
}

/* -------------------------------------------
   Reset caméra (API)
-------------------------------------------- */

export function resetViewerCamera() {
  try {
    if (!cameraEntity || !app) return;

    // cible visuelle : gsplat prioritaire, sinon glb, sinon (0,0,0)
    const targetEntity = modelEntity || envEntity;
    const targetPos = targetEntity ? targetEntity.getPosition().clone() : new pc.Vec3(0, 0, 0);

    const orbitCam = cameraEntity.script && cameraEntity.script.orbitCamera;
    if (!orbitCam) return;

    const tempEnt = new pc.Entity();
    tempEnt.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
    tempEnt.lookAt(targetPos);

    const dist = new pc.Vec3()
      .sub2(new pc.Vec3(chosenCameraX, chosenCameraY, chosenCameraZ), targetPos)
      .length();

    cameraEntity.setPosition(chosenCameraX, chosenCameraY, chosenCameraZ);
    cameraEntity.lookAt(targetPos);

    // Ces champs existent dans la version "orbit" historique ; notre free cam les ignore,
    // mais on conserve l'initialisation pour compat.
    if (orbitCam) {
      orbitCam._targetDistance = Math.max(distanceMin, dist);
      orbitCam._distance = Math.max(distanceMin, dist);
    }

    // Recalcule yaw/pitch cibles pour aligner l'orientation
    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;
    if (orbitCam._updatePosition) orbitCam._updatePosition();

    tempEnt.destroy();
  } catch (e) {
    console.error("[viewer.js] resetViewerCamera error:", e);
  }
}