v0.7.5: AR en schermvullend in de light-versie: knop rechtsboven in de weergave; op een telefoon/tablet het ontwerp als GLB in model-viewer over de hele pagina met "Bekijk in je tuin" (ware grootte, WebXR/Scene Viewer/Quick Look, op iOS maakt model-viewer de USDZ; model-viewer 4.3.1, Apache-2.0, UMD met eigen three.js, pas geladen bij de eerste keer AR), op de desktop de weergave schermvullend (scrollwiel zoomt dan direct); GlbWriter (js/core/glb-writer.js): glTF 2.0 binair uit three.js-objecten, één primitive per materiaal, PBR met lineaire kleuren, texturen als JPEG/PNG op een macht van 2 tot 1024 px met de textuurmatrix in de UV's, lichtbundels en -vegen weg, nul-driehoeken eruit en lege normalen naar de vlaknormaal (valideert zonder fouten); GLB één keer per ontwerp, el.tectumLight.glb() en een testknop GLB op light.html; HouseModel.rootGroups en groundOrigin gedeeld met de render-export

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -20,11 +20,12 @@ build-stap. Direct openen via `file://` werkt niet (texturen/lucht).
 ```
 index.html          app-shell: bovenbalk (menu, documenten, opslaan), sneltoetsen, splashscreen
 css/app.css         alle stijl
-js/vendor/          three.js r128, eigen OrbitControls, jsPDF, qrcode-generator 1.4.4 (MIT, Kazuhiko Arase; QR in de light-PDF)
+js/vendor/          three.js r128, eigen OrbitControls, jsPDF, qrcode-generator 1.4.4 (MIT, Kazuhiko Arase; QR in de light-PDF),
+                    model-viewer 4.3.1 (Apache-2.0, Google; UMD-bundel met eigen three.js, AR in de light-versie)
 js/core/            gedeelde helpers: geometrie, weergavelagen (lagenmenu), menubalk, eigenschappenpaneel
                     (inspector.js), UI-kit (werkbalk, weergave, popovers), PDF-bladen,
                     DXF-schrijver (dxf-writer.js), IFC-schrijver (ifc-writer.js), OBJ-schrijver
-                    (obj-writer.js), ZIP (zip-writer.js), labels, camerageheugen,
+                    (obj-writer.js), GLB-schrijver (glb-writer.js), ZIP (zip-writer.js), labels, camerageheugen,
                     skybox, licentie, logo
 js/wall/            WallModel (logica) + wand-PDF + wand-editor
 js/floor/           FloorModel (logica) + vloer-PDF + vloer-editor
@@ -339,7 +340,7 @@ assets/             logo, texturen, skybox
 Beperkte configurator voor de websitepagina van één model (later in de HUGO-build; nu los via
 `light.html?model=<sleutel uit HouseModel.MODELS>`). Inbedden: de stylesheets en scripts uit `light.html`
 plus `<div class="tectum-light" data-model="amstel"></div>` (mount vanzelf), of
-`TectumLight.mount(el, { model, frames })`.
+`TectumLight.mount(el, { model, frames, url, modelViewer })`.
 
 - **Rekent als de configurator** (zelfde `HouseModel.computeParts`, totalen en `CostModel`), maar toont
   alleen: indicatieve prijs incl. btw (afgerond op € 100), buitenmaten, bouwhoogte, bruto/leefbaar m²,
@@ -379,6 +380,16 @@ plus `<div class="tectum-light" data-model="amstel"></div>` (mount vanzelf), of
   kosten) en als laatste het stappenplan van de site ("Hoe verloopt het traject?") met een blok over maatwerk
   met de eigen software (keuken op maat, indeling, ramen en deuren). Contact en stappen staan
   in `LightPdf.COMPANY` en `STEPS`.
+- **AR / schermvullend:** knop rechtsboven in de weergave. Op een telefoon of tablet: het ontwerp als GLB
+  (`GlbWriter`, afgewerkte woning zoals in 3D, één primitive per materiaal, texturen als JPEG/PNG tot 1024 px,
+  lichtbundels weg; maaiveld onder het midden = oorsprong, `HouseModel.groundOrigin`) in model-viewer, over de
+  hele pagina, met de knop "Bekijk in je tuin" (ware grootte; `ar-modes="webxr scene-viewer quick-look"`, op iOS
+  maakt model-viewer zelf de USDZ). model-viewer wordt pas bij de eerste keer geladen
+  (`js/vendor/model-viewer-umd.min.js` naast `js/light/`, of `modelViewer`/`data-model-viewer`). AR vraagt
+  https; Scene Viewer (Android zonder WebXR) heeft bovendien een publieke URL van de GLB nodig, een blob-URL
+  werkt daar niet. Op de desktop: de weergave schermvullend (Fullscreen API; het scrollwiel zoomt dan direct).
+  Per ontwerp wordt de GLB één keer gemaakt; `el.tectumLight.glb()` geeft `{ blob, url, stats }` (op
+  `light.html` de testknop GLB).
 
 ## Kosten en prijzen (CSV)
 

css/light.css

@@ -65,6 +65,15 @@
 .tectum-light.view-cut .tl-cutbar { display: flex; }
 .tectum-light .tl-cutbar input { width: 150px; accent-color: var(--tl-primary); }
 .tectum-light .tl-cutbar output { min-width: 4.2em; font-weight: 600; font-variant-numeric: tabular-nums; }
+/* Rechtsboven: AR (telefoon/tablet) of schermvullend (desktop). */
+.tectum-light .tl-xbtn {
+  position: absolute; top: 10px; right: 10px; width: 35px; height: 35px; padding: 0; border: 0; border-radius: 8px;
+  display: inline-flex; align-items: center; justify-content: center; font-size: 18px; cursor: pointer;
+  background: rgba(255, 255, 255, 0.94); box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15); color: var(--tl-text);
+}
+.tectum-light .tl-xbtn:hover { color: var(--tl-primary); }
+.tectum-light .tl-xbtn[hidden] { display: none; }
+.tectum-light.has-xbtn .tl-busy { right: 53px; }
 .tectum-light .tl-hint { left: 10px; bottom: 10px; font-size: 12px; color: var(--tl-muted); padding: 3px 8px; box-shadow: none; pointer-events: none; }
 .tectum-light .tl-busy { top: 10px; right: 10px; display: none; align-items: center; gap: 8px; padding: 6px 12px; }
 .tectum-light.is-busy .tl-busy { display: inline-flex; }
@@ -174,6 +183,8 @@
   .tectum-light .tl-hint { display: none; }
   .tectum-light .tl-viewbar { left: 8px; right: 8px; top: 8px; }
   .tectum-light .tl-viewbar button { flex: 1; justify-content: center; }
+  .tectum-light.has-xbtn .tl-viewbar { right: 51px; }
+  .tectum-light .tl-xbtn { top: 8px; right: 8px; width: 37px; height: 37px; }
   .tectum-light .tl-cutbar { left: 8px; right: 8px; top: 50px; }
   .tectum-light .tl-cutbar input { flex: 1; width: auto; }
   .tectum-light .tl-busy { top: auto; bottom: 10px; right: 10px; }
@@ -187,3 +198,34 @@
   .tectum-light .tl-viewbar button .bi { display: none; }
   .tectum-light .tl-facts { grid-template-columns: 1fr; }
 }
+
+/* AR-weergave (model-viewer) over de hele pagina. Staat buiten .tectum-light: die is een container en zou het kader van
+   position: fixed worden. Kleur van de knop = --tl-primary. */
+html.tl-noscroll, html.tl-noscroll body { overflow: hidden; }
+.tl-arview {
+  position: fixed; inset: 0; z-index: 2147483000; display: none; background: #dfe6ec; color: #212121;
+  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+}
+.tl-arview.on { display: block; }
+.tl-arview *, .tl-arview *::before, .tl-arview *::after { box-sizing: border-box; }
+.tl-arview model-viewer { display: block; width: 100%; height: 100%; background: #dfe6ec; --poster-color: transparent; }
+.tl-arview .tl-ar-top {
+  position: absolute; top: 0; left: 0; right: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px;
+  padding: max(10px, env(safe-area-inset-top)) 12px 10px 16px; pointer-events: none;
+}
+.tl-arview .tl-ar-title { font-size: 17px; font-weight: 700; }
+.tl-arview .tl-ar-close {
+  pointer-events: auto; width: 44px; height: 44px; margin: 0; padding: 0; border: 0; border-radius: 50%; cursor: pointer;
+  display: inline-flex; align-items: center; justify-content: center; font-size: 18px; color: inherit;
+  background: rgba(255, 255, 255, 0.94); box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
+}
+.tl-arview .tl-ar-go {
+  position: absolute; left: 50%; bottom: calc(44px + env(safe-area-inset-bottom)); transform: translateX(-50%);
+  display: inline-flex; align-items: center; gap: 9px; height: 50px; margin: 0; padding: 0 24px; border: 0; border-radius: 25px;
+  background: #b95913; color: #fff; font-family: inherit; font-size: 16px; font-weight: 600; line-height: 1; white-space: nowrap; cursor: pointer; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
+}
+.tl-arview .tl-ar-go .bi { font-size: 22px; }
+.tl-arview .tl-ar-note {
+  position: absolute; left: 16px; right: 16px; bottom: calc(14px + env(safe-area-inset-bottom));
+  text-align: center; font-size: 12px; color: #5b6673; pointer-events: none;
+}

js/app.js

@@ -4,7 +4,7 @@
  * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
  * Zie LICENTIE.md.
  */
-const APP_VERSION = '0.7.4';
+const APP_VERSION = '0.7.5';
 // 0.0.X per kleine iteratie, 0.X.0 per mijlpaal, X.0.0 bij live-gang.
 
 let tabs = [];

js/core/glb-writer.js

@@ -0,0 +1,211 @@
+/*!
+ * Tectum
+ * Copyright © 2026 Machiel Heinen.
+ * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
+ * Zie LICENTIE.md.
+ */
+// glTF 2.0 binair (GLB) uit three.js-objecten, in meters, Y omhoog; bedoeld voor AR (model-viewer: WebXR, Scene Viewer,
+// Quick Look) en andere viewers. Alles in wereldcoördinaten samengevoegd tot één mesh met één primitive per materiaal
+// (weinig draw calls op een telefoon). Texturen: herhaling/verschuiving (texture.matrix) zit in de UV's, beelden als
+// JPEG (of PNG bij doorzichtig), maximaal MAX_TEX px. Lichteffecten (bundels, vegen: onbelicht en doorschijnend zonder
+// dieptebuffer, of additief) blijven weg; die horen bij de eigen belichting, niet in een model.
+
+window.GlbWriter = (() => {
+  const MAX_TEX = 1024;
+  const lin = (x) => x <= 0.04045 ? x / 12.92 : Math.pow((x + 0.055) / 1.055, 2.4);
+  const WRAP = { 1000: 10497, 1001: 33071, 1002: 33648 }; // three Repeat/Clamp/Mirrored -> glTF
+
+  const isEffect = (m) => m.blending !== THREE.NormalBlending || (m.isMeshBasicMaterial && m.transparent && m.depthWrite === false);
+
+  // Beeld als JPEG/PNG-bytes, afmetingen een macht van 2 (mipmaps en herhalen ook op oudere toestellen), hoogstens
+  // MAX_TEX; null als het (nog) niet te tekenen is. UV's zijn 0..1, dus het rekken verandert niets aan het beeld.
+  const pot = (n) => Math.min(MAX_TEX, Math.pow(2, Math.max(0, Math.round(Math.log2(n)))));
+  function imageBytes(image, png) {
+    try {
+      const w0 = image.naturalWidth || image.videoWidth || image.width, h0 = image.naturalHeight || image.videoHeight || image.height;
+      if (!w0 || !h0) return null;
+      const c = document.createElement('canvas');
+      c.width = pot(w0); c.height = pot(h0);
+      c.getContext('2d').drawImage(image, 0, 0, c.width, c.height);
+      const bin = atob(c.toDataURL(png ? 'image/png' : 'image/jpeg', 0.85).split(',')[1]);
+      const out = new Uint8Array(bin.length);
+      for (let i = 0; i < bin.length; i++) out[i] = bin.charCodeAt(i);
+      return { data: out, mime: png ? 'image/png' : 'image/jpeg' };
+    } catch (e) { return null; }
+  }
+
+  // objects: three.js-objecten (zichtbaar deel); origin: verschuiving in meters. Geeft { blob, stats }.
+  function build(objects, opts) {
+    const o = opts || {};
+    const origin = o.origin || { x: 0, y: 0, z: 0 };
+    const buckets = new Map(); // materiaal -> { mat, tex, pos, nrm, uv, idx, n }
+    const images = new Map(), samplers = new Map(), textures = new Map();
+    const gltfImages = [], gltfSamplers = [], gltfTextures = [];
+    const bin = [];
+    let binLength = 0, triCount = 0;
+    function addView(data, target) {
+      const pad = (4 - binLength % 4) % 4;
+      if (pad) { bin.push(new Uint8Array(pad)); binLength += pad; }
+      const view = { buffer: 0, byteOffset: binLength, byteLength: data.byteLength };
+      if (target) view.target = target;
+      bin.push(new Uint8Array(data.buffer, data.byteOffset, data.byteLength));
+      binLength += data.byteLength;
+      return view;
+    }
+    const views = [];
+
+    function textureIndex(tex, png) {
+      if (!tex || !tex.image) return null;
+      if (!images.has(tex.image)) {
+        const img = imageBytes(tex.image, png);
+        if (img) { views.push(addView(img.data)); gltfImages.push({ bufferView: views.length - 1, mimeType: img.mime }); }
+        images.set(tex.image, img ? gltfImages.length - 1 : null);
+      }
+      const source = images.get(tex.image);
+      if (source === null) return null;
+      const sKey = `${tex.wrapS}/${tex.wrapT}`;
+      if (!samplers.has(sKey)) {
+        gltfSamplers.push({ magFilter: 9729, minFilter: 9987, wrapS: WRAP[tex.wrapS] || 10497, wrapT: WRAP[tex.wrapT] || 10497 });
+        samplers.set(sKey, gltfSamplers.length - 1);
+      }
+      const tKey = `${source}/${samplers.get(sKey)}`;
+      if (!textures.has(tKey)) { gltfTextures.push({ source, sampler: samplers.get(sKey) }); textures.set(tKey, gltfTextures.length - 1); }
+      return textures.get(tKey);
+    }
+    function bucketOf(m) {
+      if (!buckets.has(m)) {
+        const map = m.map && m.map.image ? m.map : null;
+        const tex = map ? textureIndex(map, !!m.transparent) : null;
+        buckets.set(m, { mat: m, map: tex !== null ? map : null, tex, pos: [], nrm: [], uv: [], idx: [], n: 0 });
+      }
+      return buckets.get(m);
+    }
+
+    const v = new THREE.Vector3(), nm = new THREE.Matrix3(), uv = new THREE.Vector2();
+    const pa = new THREE.Vector3(), pb = new THREE.Vector3(), pc = new THREE.Vector3(), face = new THREE.Vector3();
+    const visit = (root) => root && (root.updateMatrixWorld(true), root.traverseVisible(mesh => {
+      if (!mesh.isMesh || !mesh.geometry || !mesh.geometry.attributes.position) return;
+      let g = mesh.geometry;
+      if (!g.attributes.normal) { g = g.clone(); g.computeVertexNormals(); }
+      const pos = g.attributes.position, nrm = g.attributes.normal, uvA = g.attributes.uv, idx = g.index;
+      nm.getNormalMatrix(mesh.matrixWorld);
+      const flip = mesh.matrixWorld.determinant() < 0;
+      const list = Array.isArray(mesh.material) ? mesh.material : [mesh.material];
+      const groups = g.groups && g.groups.length ? g.groups : [{ start: 0, count: idx ? idx.count : pos.count, materialIndex: 0 }];
+      const remaps = new Map(); // bucket -> bronhoekpunt -> index in de bucket
+      groups.forEach(gr => {
+        const m = list[gr.materialIndex] || list[0];
+        if (!m || m.visible === false || isEffect(m)) return;
+        const b = bucketOf(m);
+        if (!remaps.has(b)) remaps.set(b, new Int32Array(pos.count).fill(-1));
+        const remap = remaps.get(b);
+        if (b.map) b.map.updateMatrix();
+        const add = (ci) => {
+          if (remap[ci] >= 0) return remap[ci];
+          v.fromBufferAttribute(pos, ci).applyMatrix4(mesh.matrixWorld);
+          b.pos.push(v.x - origin.x, v.y - origin.y, v.z - origin.z);
+          // Een lege normaal (bron met nul-driehoeken) wordt de vlaknormaal: glTF eist lengte 1.
+          v.fromBufferAttribute(nrm, ci).applyMatrix3(nm);
+          if (v.lengthSq() < 1e-12) v.copy(face); else v.normalize();
+          b.nrm.push(v.x, v.y, v.z);
+          if (b.map) {
+            if (uvA) uv.fromBufferAttribute(uvA, ci).applyMatrix3(b.map.matrix); else uv.set(0, 0);
+            // three (flipY) heeft v = 0 onderaan het beeld, glTF bovenaan.
+            b.uv.push(uv.x, b.map.flipY ? 1 - uv.y : uv.y);
+          }
+          return (remap[ci] = b.n++);
+        };
+        const end = Math.min(gr.start + gr.count, idx ? idx.count : pos.count);
+        for (let k = gr.start; k + 2 < end; k += 3) {
+          const s = [0, 1, 2].map(j => idx ? idx.getX(k + j) : k + j);
+          // Driehoeken zonder oppervlakte (< 0,1 mm²) overslaan.
+          pa.fromBufferAttribute(pos, s[0]).applyMatrix4(mesh.matrixWorld);
+          pb.fromBufferAttribute(pos, s[1]).applyMatrix4(mesh.matrixWorld).sub(pa);
+          pc.fromBufferAttribute(pos, s[2]).applyMatrix4(mesh.matrixWorld).sub(pa);
+          face.crossVectors(pb, pc);
+          const len = face.length();
+          if (len < 2e-7) continue;
+          face.multiplyScalar(flip ? -1 / len : 1 / len);
+          const c = s.map(add);
+          if (flip) b.idx.push(c[0], c[2], c[1]); else b.idx.push(c[0], c[1], c[2]);
+          triCount++;
+        }
+      });
+    }));
+    objects.forEach(visit);
+
+    // Accessors en materialen per bucket.
+    const accessors = [], materials = [], primitives = [];
+    let unlit = false;
+    const accessor = (arr, type, comps, ctype, target, minMax) => {
+      views.push(addView(arr, target));
+      const a = { bufferView: views.length - 1, componentType: ctype, count: arr.length / comps, type };
+      if (minMax) Object.assign(a, minMax);
+      accessors.push(a);
+      return accessors.length - 1;
+    };
+    buckets.forEach(b => {
+      if (!b.idx.length) return;
+      const m = b.mat, pos = new Float32Array(b.pos);
+      const min = [Infinity, Infinity, Infinity], max = [-Infinity, -Infinity, -Infinity];
+      for (let i = 0; i < pos.length; i++) { const a = i % 3; if (pos[i] < min[a]) min[a] = pos[i]; if (pos[i] > max[a]) max[a] = pos[i]; }
+      const attributes = {
+        POSITION: accessor(pos, 'VEC3', 3, 5126, 34962, { min, max }),
+        NORMAL: accessor(new Float32Array(b.nrm), 'VEC3', 3, 5126, 34962)
+      };
+      if (b.map) attributes.TEXCOORD_0 = accessor(new Float32Array(b.uv), 'VEC2', 2, 5126, 34962);
+      const big = b.n >= 65535; // 65535 zelf mag niet in Uint16 (glTF)
+      const indices = accessor(big ? new Uint32Array(b.idx) : new Uint16Array(b.idx), 'SCALAR', 1, big ? 5125 : 5123, 34963);
+
+      // De app toont kleurwaarden zoals ze zijn (geen kleurbeheer); glTF-factoren zijn lineair, beelden sRGB.
+      const c = m.color || { r: 0.6, g: 0.6, b: 0.6 };
+      const alpha = m.transparent ? (m.opacity !== undefined ? m.opacity : 1) : 1;
+      const pbr = {
+        baseColorFactor: [lin(c.r), lin(c.g), lin(c.b), alpha],
+        metallicFactor: m.metalness !== undefined ? m.metalness : 0,
+        roughnessFactor: m.roughness !== undefined ? m.roughness : 0.85
+      };
+      if (b.tex !== null) pbr.baseColorTexture = { index: b.tex };
+      const mat = { name: m.name || m.type, pbrMetallicRoughness: pbr };
+      if (m.emissive && (m.emissive.r || m.emissive.g || m.emissive.b)) {
+        const k = m.emissiveIntensity !== undefined ? m.emissiveIntensity : 1;
+        mat.emissiveFactor = [m.emissive.r, m.emissive.g, m.emissive.b].map(x => Math.min(1, lin(x) * k));
+      }
+      if (m.transparent && (alpha < 1 || b.tex !== null)) mat.alphaMode = 'BLEND';
+      if (m.side !== THREE.FrontSide) mat.doubleSided = true;
+      if (m.isMeshBasicMaterial) { mat.extensions = { KHR_materials_unlit: {} }; unlit = true; }
+      materials.push(mat);
+      primitives.push({ attributes, indices, material: materials.length - 1, mode: 4 });
+    });
+
+    const json = {
+      asset: { version: '2.0', generator: `Tectum${o.app ? ' ' + o.app : ''}` },
+      scene: 0,
+      scenes: [{ name: o.name || 'woning', nodes: [0] }],
+      nodes: [{ name: o.name || 'woning', mesh: 0 }],
+      meshes: [{ name: o.name || 'woning', primitives }],
+      materials, accessors, bufferViews: views,
+      buffers: [{ byteLength: 0 }]
+    };
+    if (gltfImages.length) Object.assign(json, { images: gltfImages, samplers: gltfSamplers, textures: gltfTextures });
+    if (unlit) json.extensionsUsed = ['KHR_materials_unlit'];
+    const binPad = (4 - binLength % 4) % 4;
+    if (binPad) { bin.push(new Uint8Array(binPad)); binLength += binPad; }
+    json.buffers[0].byteLength = binLength;
+
+    // GLB: kop (12 bytes), JSON-blok (opgevuld met spaties), BIN-blok (opgevuld met nullen).
+    let jsonBytes = new TextEncoder().encode(JSON.stringify(json));
+    const jsonPad = (4 - jsonBytes.length % 4) % 4;
+    if (jsonPad) { const p = new Uint8Array(jsonBytes.length + jsonPad).fill(0x20); p.set(jsonBytes); jsonBytes = p; }
+    const total = 12 + 8 + jsonBytes.length + 8 + binLength;
+    const head = new DataView(new ArrayBuffer(20));
+    head.setUint32(0, 0x46546C67, true); head.setUint32(4, 2, true); head.setUint32(8, total, true);
+    head.setUint32(12, jsonBytes.length, true); head.setUint32(16, 0x4E4F534A, true);
+    const binHead = new DataView(new ArrayBuffer(8));
+    binHead.setUint32(0, binLength, true); binHead.setUint32(4, 0x004E4942, true);
+    const blob = new Blob([head, jsonBytes, binHead].concat(bin), { type: 'model/gltf-binary' });
+    return { blob, stats: { triangles: triCount, materials: materials.length, textures: gltfImages.length, bytes: total } };
+  }
+
+  return { build };
+})();

js/house/house-model.js

@@ -2051,6 +2051,21 @@ window.HouseModel = (() => {
     return ext.concat(parts.interior);
   }
 
+  // Alle 3D-groepen van de woning (na placeGroups), bijv. voor een scène of een export.
+  function rootGroups(parts) {
+    return parts.units.map(u => u.floorGroup).concat(allWallPieces(parts).map(p => p.group), parts.units.map(u => u.roof.group),
+      [parts.roofEdgeGroup, parts.postsGroup, parts.chimneysGroup, parts.sandwichGroup, parts.lightingGroup, parts.elektraGroup, parts.roomsGroup, parts.fixturesGroup]).filter(Boolean);
+  }
+
+  // Oorsprong voor exports (m): maaiveld onder het midden van de units.
+  function groundOrigin(st, parts) {
+    const rs = parts.rects;
+    const bx0 = Math.min(...rs.map(r => r.x0)), bx1 = Math.max(...rs.map(r => r.x1));
+    const bz0 = Math.min(...rs.map(r => r.z0)), bz1 = Math.max(...rs.map(r => r.z1));
+    const ground = Math.max(...parts.units.map(u => u.layout.floorTop)) - (st.settings.groundLevel || 0);
+    return { x: (bx0 + bx1) / 2000, y: ground / 1000, z: (bz0 + bz1) / 2000 };
+  }
+
   function computeDimensions(parts, groundLevel) {
     const m2 = (mm2) => mm2 / 1e6;
     const rects = parts.rects;
@@ -2379,6 +2394,6 @@ window.HouseModel = (() => {
     clone, createEmptyProject, createDefaultSettings, createUnitEntry, applyGlobalSettings, nextUnitId, MODELS, createDefaultState, unitRects, computeSeams, overlappingPairs,
     interiorWallDefaults, setThickness, thicknessOf, interiorLayout, ensureSeamWalls, syncSeamWalls, missingSeamWalls,
     houseRoofShape, houseRoofFits, setHouseRoof, coverExtensions, EXTEND_MAX,
-    computeParts, placeGroups, sectionCaps, allWallPieces, computeTotals, computeDimensions, dimensionRows, TRANSPORT, TRANSPORT_CLASSES, computeTransport, validateState, fromUnitDesign, normalize
+    computeParts, placeGroups, rootGroups, groundOrigin, sectionCaps, allWallPieces, computeTotals, computeDimensions, dimensionRows, TRANSPORT, TRANSPORT_CLASSES, computeTransport, validateState, fromUnitDesign, normalize
   };
 })();

js/house/house.js

@@ -2846,14 +2846,9 @@ function mountHouseEditor(container, callbacks) {
       elektraMaterials: ElektraModel.createMaterials(), layers: ViewLayers.all(), finishedOnly: true
     });
     HouseModel.placeGroups(full);
-    const roots = full.units.map(u => u.floorGroup).concat(HouseModel.allWallPieces(full).map(p => p.group), full.units.map(u => u.roof.group),
-      [full.roofEdgeGroup, full.postsGroup, full.chimneysGroup, full.sandwichGroup, full.lightingGroup, full.elektraGroup, full.roomsGroup, full.fixturesGroup]).filter(Boolean);
-    const bx0 = Math.min(...full.rects.map(r => r.x0)), bx1 = Math.max(...full.rects.map(r => r.x1));
-    const bz0 = Math.min(...full.rects.map(r => r.z0)), bz1 = Math.max(...full.rects.map(r => r.z1));
-    const ground = Math.max(...full.units.map(u => u.layout.floorTop)) - (state.settings.groundLevel || 0);
     const name = filename.replace(/\.zip$/i, '').replace(/[^A-Za-z0-9_-]+/g, '_') || 'woning';
-    const origin = { x: (bx0 + bx1) / 2000, y: ground / 1000, z: (bz0 + bz1) / 2000 };
+    const origin = HouseModel.groundOrigin(state, full);
-    const out = ObjWriter.build(roots, { name, app: APP_VERSION, origin });
+    const out = ObjWriter.build(HouseModel.rootGroups(full), { name, app: APP_VERSION, origin });
     const edge = full.roofEdge;
     const lights = LightingModel.lightSources(full.lighting.lamps, edge ? edge.spots : [], edge ? edge.top - edge.fasciaHeight : 0, full.lighting.indoor);
     out.files.push({ name: `${name}_lampen.py`, data: new TextEncoder().encode(ObjWriter.blenderLights(lights, { name, app: APP_VERSION, origin })) });

js/light/light.js

@@ -8,9 +8,27 @@
 // Light-versie voor de modelpagina's: één model in 3D, een paar keuzes en de kerncijfers; opslaan = PDF met
 // aanzichten en plattegrond. Alle logica in LightModel (en daarachter de gewone modellen).
 // Inbedden: <div class="tectum-light" data-model="amstel" data-url="…"></div> (vanzelf gemount), of
-// TectumLight.mount(el, { model, frames, url }); url = adres voor de QR-code in de PDF (standaard de modelpagina).
+// TectumLight.mount(el, { model, frames, url, modelViewer }); url = adres voor de QR-code in de PDF (standaard de
+// modelpagina), modelViewer = adres van model-viewer (standaard js/vendor naast dit script).
+// Knop rechtsboven in de weergave: op een telefoon/tablet het ontwerp als GLB in model-viewer, met AR (WebXR, Scene
+// Viewer, Quick Look); op de desktop schermvullend.
 window.TectumLight = (() => {
   const esc = UI.esc;
+  // model-viewer (Apache-2.0, eigen three.js ingebakken) pas laden bij de eerste keer AR.
+  const SCRIPT_SRC = (document.currentScript && document.currentScript.src) || location.href;
+  let mvLoading = null;
+  function loadModelViewer(src) {
+    if (window.customElements.get('model-viewer')) return Promise.resolve();
+    if (!mvLoading) mvLoading = new Promise((ok, fail) => {
+      const s = document.createElement('script');
+      s.src = src;
+      s.onload = ok;
+      s.onerror = () => { mvLoading = null; fail(new Error(`model-viewer niet geladen (${src})`)); };
+      document.head.appendChild(s);
+    });
+    return mvLoading;
+  }
+  const AR_DEVICE = /android|iphone|ipad|ipod/i.test(navigator.userAgent) || (navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1);
   const nl = (n, d = 0) => n.toLocaleString('nl-NL', { minimumFractionDigits: d, maximumFractionDigits: d });
   const meters = (mm) => `${nl(mm / 1000, 2)} m`;
   const clone = (o) => JSON.parse(JSON.stringify(o));
@@ -33,6 +51,7 @@ window.TectumLight = (() => {
       <label class="tl-cutbar"><span>Snijhoogte</span>
         <input type="range" min="${SECTION.min}" max="${SECTION.max}" step="50" value="${SECTION.start}" aria-label="Snijhoogte boven de vloer">
         <output>${meters(SECTION.start)}</output></label>
+      <button type="button" class="tl-xbtn" hidden></button>
       <div class="tl-hint"></div>
       <div class="tl-busy" aria-live="polite"><span class="tl-spinner"></span>Berekenen…</div>
       <div class="tl-toast" role="status" aria-live="polite"></div>
@@ -81,8 +100,7 @@ window.TectumLight = (() => {
     mats.roofMaterials.ceilingMaterial.color.set(S0.ceilingColor || '#f4f3ef');
     const compute = (st) => HouseModel.computeParts(st, Object.assign({ layers: ViewLayers.all(), finishedOnly: true }, mats));
     const disposeGeo = (g) => g && g.traverse(x => { if (x.geometry) x.geometry.dispose(); });
-    const rootsOf = (p) => p.units.map(u => u.floorGroup).concat(HouseModel.allWallPieces(p).map(x => x.group), p.units.map(u => u.roof.group),
+    const rootsOf = HouseModel.rootGroups;
-      [p.roofEdgeGroup, p.postsGroup, p.chimneysGroup, p.sandwichGroup, p.lightingGroup, p.elektraGroup, p.roomsGroup, p.fixturesGroup]).filter(Boolean);
 
     // Weergave: 3D, doorsnede (dak en lampen weg, wanden en wat erin zit afgesneden, snede wit afgedekt) of plattegrond.
     let group = null, caps = null, view = '3d', fitted = false, center = { x: 0, z: 0, size: 10 }, sectionMM = SECTION.start;
@@ -109,6 +127,12 @@ window.TectumLight = (() => {
       placeCut();
       if (view === 'plan') drawPlan();
     }
+    // fn in de gewone 3D-weergave (dak erop, niets afgesneden), daarna terug naar de gekozen weergave.
+    function as3d(fn) {
+      const prev = view;
+      if (prev !== '3d') { view = '3d'; applyView(); }
+      try { return fn(); } finally { if (prev !== '3d') { view = prev; applyView(); } }
+    }
     // Snijvlak en witte afdekking op de snijhoogte; alleen dit bij het schuiven.
     function placeCut() {
       const p = cur.parts, floorTop = Math.max(...p.units.map(u => u.layout.floorTop));
@@ -551,27 +575,23 @@ window.TectumLight = (() => {
 
     // Beeld voor het voorblad: de 3D-weergave (ook vanuit doorsnede of plattegrond) op vaste resolutie.
     function snapshot() {
-      const W = 1600, H = 1500, prev = view, pr = renderer.getPixelRatio();
+      const W = 1600, H = 1500, other = view !== '3d', pr = renderer.getPixelRatio();
       const keep = { pos: camera.position.clone(), target: controls.target.clone() };
-      if (view !== '3d') {
+      const url = as3d(() => {
-        view = '3d';
+        if (other && poses['3d']) { camera.position.copy(poses['3d'].pos); controls.target.copy(poses['3d'].target); }
-        applyView();
+        renderer.setPixelRatio(1);
-        if (poses['3d']) { camera.position.copy(poses['3d'].pos); controls.target.copy(poses['3d'].target); }
+        renderer.setSize(W, H, false);
-      }
+        camera.aspect = W / H;
-      renderer.setPixelRatio(1);
+        camera.updateProjectionMatrix();
-      renderer.setSize(W, H, false);
+        controls.update();
-      camera.aspect = W / H;
+        renderer.render(scene, camera);
-      camera.updateProjectionMatrix();
+        return renderer.domElement.toDataURL('image/jpeg', 0.88);
-      controls.update();
+      });
-      renderer.render(scene, camera);
-      const url = renderer.domElement.toDataURL('image/jpeg', 0.88);
       renderer.setPixelRatio(pr);
-      if (prev !== '3d') {
+      if (other) {
-        view = prev;
         camera.position.copy(keep.pos);
         controls.target.copy(keep.target);
         controls.update();
-        applyView();
       }
       resize();
       return { url, width: W, height: H };
@@ -609,20 +629,111 @@ window.TectumLight = (() => {
     // Alleen tekenen als de configurator in beeld is (modelpagina scrolt).
     const io = new IntersectionObserver((es) => { visible = es.some(x => x.isIntersecting); });
     // In een pagina: het scrollwiel scrolt de pagina, tenzij je in de 3D hebt geklikt (tot je de muis eruit haalt) of
-    // Ctrl/⌘ ingedrukt houdt; dan zoomt het.
+    // Ctrl/⌘ ingedrukt houdt (of schermvullend); dan zoomt het.
     let engaged = false;
     const stageEl = $('.tl-stage');
     stageEl.addEventListener('pointerdown', () => { engaged = true; });
     stageEl.addEventListener('pointerleave', () => { engaged = false; });
     stageEl.addEventListener('wheel', (e) => {
-      if (engaged || e.ctrlKey || e.metaKey || view === 'plan') return;
+      if (engaged || e.ctrlKey || e.metaKey || view === 'plan' || fsEl() === stageEl) return;
       e.stopPropagation();
       toast('Klik eerst in de weergave (of houd Ctrl ingedrukt) om te zoomen.');
     }, { capture: true });
     io.observe(stage);
+
+    // GLB van het ontwerp (afgewerkte woning zoals in 3D, maaiveld onder het midden = oorsprong); één keer per ontwerp.
+    let glb = null;
+    function makeGlb() {
+      if (glb && glb.parts === cur.parts) return glb;
+      if (glb) URL.revokeObjectURL(glb.url);
+      const out = as3d(() => GlbWriter.build(rootsOf(cur.parts), { name: model.label, origin: HouseModel.groundOrigin(cur.st, cur.parts) }));
+      glb = { parts: cur.parts, blob: out.blob, url: URL.createObjectURL(out.blob), stats: out.stats };
+      return glb;
+    }
+
+    // Knop rechtsboven: AR op een telefoon/tablet, schermvullend op de desktop.
+    const xbtn = $('.tl-xbtn');
+    const fsEl = () => document.fullscreenElement || document.webkitFullscreenElement;
+    const canFull = !!(stageEl.requestFullscreen || stageEl.webkitRequestFullscreen);
+    function setXbtn() {
+      const full = fsEl() === stageEl;
+      xbtn.innerHTML = `<i class="bi bi-${AR_DEVICE ? 'badge-ar' : full ? 'fullscreen-exit' : 'fullscreen'}"></i>`;
+      xbtn.title = AR_DEVICE ? 'Bekijk het ontwerp in je eigen tuin (AR)' : full ? 'Schermvullend uit (Esc)' : 'Schermvullend';
+      xbtn.setAttribute('aria-label', xbtn.title);
+    }
+    if (AR_DEVICE || canFull) { xbtn.hidden = false; root.classList.add('has-xbtn'); setXbtn(); }
+    function toggleFull() {
+      const r = fsEl() === stageEl ? (document.exitFullscreen || document.webkitExitFullscreen).call(document)
+        : (stageEl.requestFullscreen || stageEl.webkitRequestFullscreen).call(stageEl);
+      if (r && r.catch) r.catch(() => toast('Schermvullend lukt hier niet.'));
+    }
+    const onFull = () => { root.classList.toggle('is-full', fsEl() === stageEl); setXbtn(); };
+    document.addEventListener('fullscreenchange', onFull);
+    document.addEventListener('webkitfullscreenchange', onFull);
+
+    // AR: model-viewer in een eigen laag over de hele pagina (buiten de tool: die is een container en dus het
+    // kader van position: fixed). De AR-knop van model-viewer verschijnt alleen als het toestel AR kan.
+    const mvSrc = o.modelViewer || root.dataset.modelViewer || new URL('../vendor/model-viewer-umd.min.js', SCRIPT_SRC).href;
+    let arView = null, arOpen = false;
+    const AR_NOTE = 'Ware grootte · met twee vingers verkleinen of draaien';
+    function closeAr() {
+      if (!arOpen) return;
+      arOpen = false;
+      arView.classList.remove('on');
+      document.documentElement.classList.remove('tl-noscroll');
+    }
+    const arKey = (e) => { if (arOpen && e.key === 'Escape') closeAr(); };
+    document.addEventListener('keydown', arKey);
+    function showAr(url) {
+      if (!arView) {
+        arView = document.createElement('div');
+        arView.className = 'tl-arview';
+        arView.setAttribute('role', 'dialog');
+        arView.setAttribute('aria-modal', 'true');
+        arView.innerHTML = `<model-viewer camera-controls touch-action="none" interaction-prompt="none" shadow-intensity="1" environment-image="neutral"
+            ar ar-modes="webxr scene-viewer quick-look" ar-scale="auto" ar-placement="floor">
+            <button type="button" slot="ar-button" class="tl-ar-go"><i class="bi bi-badge-ar"></i>Bekijk in je tuin</button>
+          </model-viewer>
+          <div class="tl-ar-top"><b class="tl-ar-title"></b><button type="button" class="tl-ar-close" aria-label="Sluiten"><i class="bi bi-x-lg"></i></button></div>
+          <div class="tl-ar-note"></div>`;
+        document.body.appendChild(arView);
+        const mv = arView.querySelector('model-viewer'), note = arView.querySelector('.tl-ar-note');
+        arView.querySelector('.tl-ar-close').addEventListener('click', closeAr);
+        mv.addEventListener('load', () => {
+          note.textContent = mv.canActivateAR ? AR_NOTE : 'AR werkt niet op dit toestel of in deze browser; draaien en zoomen kan wel.';
+        });
+        mv.addEventListener('ar-status', (e) => { if (e.detail.status === 'failed') note.textContent = 'AR kon niet starten op dit toestel.'; });
+      }
+      const mv = arView.querySelector('model-viewer');
+      arView.setAttribute('aria-label', `${model.label} in 3D en AR`);
+      arView.querySelector('.tl-ar-title').textContent = model.label;
+      mv.alt = `3D-model van ${model.label}`;
+      if (mv.getAttribute('src') !== url) { arView.querySelector('.tl-ar-note').textContent = ''; mv.setAttribute('src', url); }
+      arView.classList.add('on');
+      document.documentElement.classList.add('tl-noscroll');
+      arOpen = true;
+    }
+    async function openAr() {
+      if (!cur || busy) return;
+      busy = true;
+      root.classList.add('is-busy');
+      try {
+        await new Promise(r => setTimeout(r, 30)); // eerst de spinner tekenen
+        const g = makeGlb();
+        await loadModelViewer(mvSrc);
+        showAr(g.url);
+      } catch (err) {
+        console.error(err);
+        toast('De AR-weergave kon niet worden geopend.');
+      }
+      busy = false;
+      root.classList.remove('is-busy');
+    }
+    xbtn.addEventListener('click', () => { if (AR_DEVICE) openAr(); else toggleFull(); });
+
     (function loop() {
       raf = requestAnimationFrame(loop);
-      if (visible && view !== 'plan') renderer.render(scene, camera);
+      if (visible && !arOpen && view !== 'plan') renderer.render(scene, camera);
     })();
 
     root.classList.add('is-busy');
@@ -636,11 +747,19 @@ window.TectumLight = (() => {
       unmount() {
         cancelAnimationFrame(raf);
         ro.disconnect(); io.disconnect(); offCosts(); controls.dispose();
+        document.removeEventListener('keydown', arKey);
+        document.removeEventListener('fullscreenchange', onFull);
+        document.removeEventListener('webkitfullscreenchange', onFull);
+        closeAr();
+        if (arView) arView.remove();
+        if (glb) URL.revokeObjectURL(glb.url);
         if (group) disposeGeo(group);
         renderer.dispose();
         root.innerHTML = '';
       },
-      getChoices: () => clone(ch)
+      getChoices: () => clone(ch),
+      // GLB van het huidige ontwerp: { blob, url, stats } (zelfde als voor AR).
+      glb: () => cur && makeGlb()
     };
   }
 
@@ -648,7 +767,7 @@ window.TectumLight = (() => {
     document.querySelectorAll('.tectum-light[data-model]').forEach(el => {
       if (el.dataset.mounted) return;
       el.dataset.mounted = '1';
-      try { mount(el); } catch (err) { console.error(err); el.textContent = `Configurator niet beschikbaar: ${err.message}`; }
+      try { el.tectumLight = mount(el); } catch (err) { console.error(err); el.textContent = `Configurator niet beschikbaar: ${err.message}`; }
     });
   }
   if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', autoMount);

js/vendor/model-viewer.LICENSE

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
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+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
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+
+      "Object" form shall mean any form resulting from mechanical
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+      not limited to compiled object code, generated documentation,
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

light.html

@@ -19,7 +19,7 @@
     .page { max-width: 1400px; margin: 0 auto; }
     .page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
     .page-head img { height: 34px; }
-    .page-head select { font: inherit; padding: 6px 10px; border: 1px solid #c5ced9; border-radius: 8px; background: #fff; }
+    .page-head select, .page-head button { font: inherit; padding: 6px 10px; border: 1px solid #c5ced9; border-radius: 8px; background: #fff; }
     @media (max-width: 820px) { body { padding: 12px; } }
   </style>
   <script src="js/vendor/three.min.js"></script>
@@ -30,7 +30,11 @@
     <div class="page-head">
       <img src="assets/logo.svg" alt="Van Emous Mantelzorgwoningen">
       <!-- Alleen voor het losse testen: op een modelpagina staat het model vast. -->
-      <select id="model-pick" aria-label="Model"></select>
+      <div>
+        <select id="model-pick" aria-label="Model"></select>
+        <!-- Alleen voor het testen: de GLB die op een telefoon in AR wordt getoond (bijv. in Blender of een glTF-viewer). -->
+        <button type="button" id="glb-dl" title="De GLB die AR gebruikt downloaden">GLB</button>
+      </div>
     </div>
     <div id="configurator" class="tectum-light"></div>
   </div>
@@ -40,6 +44,7 @@
   <script src="js/core/view-layers.js"></script>
   <script src="js/core/ui-kit.js"></script>
   <script src="js/core/skybox.js"></script>
+  <script src="js/core/glb-writer.js"></script>
   <script src="js/vendor/jspdf.umd.min.js"></script>
   <script src="js/vendor/qrcode.js"></script>
   <script src="js/core/pdf-sheet.js"></script>
@@ -75,7 +80,17 @@
       const pick = document.getElementById('model-pick');
       pick.innerHTML = Object.entries(HouseModel.MODELS).map(([k, m]) => `<option value="${k}"${k === model ? ' selected' : ''}>${m.label}</option>`).join('');
       pick.addEventListener('change', () => { location.search = '?model=' + pick.value; });
-      document.getElementById('configurator').dataset.model = model;
+      const el = document.getElementById('configurator'), btn = document.getElementById('glb-dl');
+      el.dataset.model = model;
+      btn.addEventListener('click', () => {
+        const g = el.tectumLight && el.tectumLight.glb();
+        if (!g) return;
+        const a = document.createElement('a');
+        a.href = g.url;
+        a.download = `${model}.glb`;
+        a.click();
+        btn.textContent = `GLB · ${(g.stats.bytes / 1e6).toLocaleString('nl-NL', { maximumFractionDigits: 1 })} MB · ${g.stats.triangles.toLocaleString('nl-NL')} driehoeken`;
+      });
     })();
   </script>
   <script src="js/light/light.js"></script>