Finished with Phase 2.6
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// Minimal GeckoLib/Blockbench geo.json viewer (Three.js) for the Models tab.
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// Renders cubes with the standard "box UV" layout and the NoN `afw_bone_textures`
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// map (bone → texture), textures served through the gated pack_asset endpoint.
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(function () {
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let renderer = null;
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let scene = null;
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let camera = null;
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let meshRoot = null;
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let rafId = null;
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function assetUrl(baseUrl, member) {
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return baseUrl.replace('ASSET', member);
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}
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function boneChildren(map, name, rootName) {
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return Object.keys(map).filter(
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b => map[b].parent === name || (name === rootName && !map[b].parent)
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);
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}
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// Minecraft "box UV" face rects (u, v, w, h) in texture pixels.
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function boxUVRects(uv, size) {
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const u = uv[0], v = uv[1];
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const x = size[0], y = size[1], z = size[2];
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return {
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top: [u + z, v, x, z],
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bottom: [u + z + x, v, x, z],
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north: [u + z, v + z, x, y],
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south: [u + z + x, v + z, x, y],
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east: [u, v + z, z, y],
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west: [u + z + x + z, v + z, z, y],
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};
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}
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function assignBoxUVs(geometry, uv, tw, th) {
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// Three.js BoxGeometry groups: 0=px(east) 1=nx(west) 2=py(top) 3=ny(bottom) 4=pz(south) 5=nz(north)
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const rects = boxUVRects(uv, [
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geometry.parameters.width,
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geometry.parameters.height,
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geometry.parameters.depth,
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]);
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const order = ['east', 'west', 'top', 'bottom', 'south', 'north'];
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const uvs = geometry.attributes.uv;
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const positions = geometry.attributes.position;
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for (let g = 0; g < geometry.groups.length; g++) {
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const face = order[g];
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if (!face) break;
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const [ru, rv, rw, rh] = rects[face];
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const u0 = ru / tw;
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const v0 = 1 - (rv + rh) / th; // flip: image v=0 is the top
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const u1 = (ru + rw) / tw;
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const v1 = 1 - rv / th;
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const start = geometry.groups[g].start;
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const count = geometry.groups[g].count;
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for (let i = start; i < start + count; i++) {
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// Keep U/V in order (positions already give 0..1 corners per face).
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const px = positions.getX(i), py = positions.getY(i), pz = positions.getZ(i);
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let U, V;
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if (face === 'east' || face === 'west') { U = (pz + 0.5) * (u1 - u0) + u0; V = (py + 0.5) * (v1 - v0) + v0; }
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else if (face === 'top' || face === 'bottom') { U = (px + 0.5) * (u1 - u0) + u0; V = (pz + 0.5) * (v1 - v0) + v0; }
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else { U = (px + 0.5) * (u1 - u0) + u0; V = (py + 0.5) * (v1 - v0) + v0; }
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uvs.setXY(i, U, V);
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}
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}
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uvs.needsUpdate = true;
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}
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function buildBone(map, name, textures, tw, th, parentGroup) {
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const bone = map[name];
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const group = new THREE.Group();
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if (bone.pivot) group.position.set(bone.pivot[0], bone.pivot[1], bone.pivot[2]);
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if (bone.rotation) {
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const r = bone.rotation;
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group.rotation.order = 'XYZ';
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group.rotation.set(r[0] * Math.PI / 180, r[1] * Math.PI / 180, r[2] * Math.PI / 180);
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}
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const texMember = textures[name];
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let material;
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if (texMember) {
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const loader = new THREE.TextureLoader();
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const texture = loader.load(assetUrl(window.__PACK_ASSET_BASE__ || '', texMember));
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texture.wrapS = THREE.ClampToEdgeWrapping;
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texture.wrapT = THREE.ClampToEdgeWrapping;
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material = new THREE.MeshStandardMaterial({ map: texture, roughness: 0.9, metalness: 0.0 });
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} else {
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material = new THREE.MeshStandardMaterial({ color: 0x9a9a9a, roughness: 0.9 });
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}
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for (const cube of bone.cubes || []) {
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const size = new THREE.Vector3(cube.size[0], cube.size[1], cube.size[2]);
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const geometry = new THREE.BoxGeometry(size.x, size.y, size.z);
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assignBoxUVs(geometry, cube.uv || [0, 0], tw, th);
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const mesh = new THREE.Mesh(geometry, material);
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const cx = cube.origin[0] + size.x / 2;
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const cy = cube.origin[1] + size.y / 2;
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const cz = cube.origin[2] + size.z / 2;
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mesh.position.set(cx, cy, cz);
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if (cube.rotation) {
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const r = cube.rotation;
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mesh.rotation.set(r[0] * Math.PI / 180, r[1] * Math.PI / 180, r[2] * Math.PI / 180);
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}
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group.add(mesh);
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}
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for (const child of boneChildren(map, name, null)) {
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buildBone(map, child, textures, tw, th, group);
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}
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parentGroup.add(group);
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}
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function disposeObject(obj) {
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obj.traverse((node) => {
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if (node.geometry) node.geometry.dispose();
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if (node.material) {
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if (node.material.map) node.material.map.dispose();
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node.material.dispose();
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}
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});
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}
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function render(member, container, baseUrl) {
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window.__PACK_ASSET_BASE__ = baseUrl;
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if (renderer) dispose();
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const width = container.clientWidth || 480;
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const height = container.clientHeight || 480;
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scene = new THREE.Scene();
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scene.background = new THREE.Color(0x1e1e2e);
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camera = new THREE.PerspectiveCamera(50, width / height, 0.1, 2000);
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camera.position.set(0, 20, 60);
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camera.lookAt(0, 12, 0);
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renderer = new THREE.WebGLRenderer({ antialias: true });
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renderer.setSize(width, height);
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renderer.setPixelRatio(window.devicePixelRatio || 1);
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container.appendChild(renderer.domElement);
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scene.add(new THREE.AmbientLight(0xffffff, 0.6));
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const key = new THREE.DirectionalLight(0xffffff, 0.9);
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key.position.set(30, 60, 30);
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scene.add(key);
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const fill = new THREE.DirectionalLight(0xffffff, 0.3);
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fill.position.set(-30, 20, -30);
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scene.add(fill);
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meshRoot = new THREE.Group();
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scene.add(meshRoot);
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const url = assetUrl(baseUrl, member);
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fetch(url, { headers: { 'Accept': 'application/json' } })
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.then(r => { if (!r.ok) throw new Error('http'); return r.json(); })
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.then(geo => {
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const geometry = (geo['minecraft:geometry'] || [])[0];
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if (!geometry) throw new Error('no geometry');
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const desc = geometry.description || {};
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const tw = desc.texture_width || 64;
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const th = desc.texture_height || 64;
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const textures = geo['afw_bone_textures'] || {};
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const map = {};
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(geometry.bones || []).forEach(b => { map[b.name] = b; });
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const roots = Object.keys(map).filter(b => !map[b].parent);
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roots.forEach(root => buildBone(map, root, textures, tw, th, meshRoot));
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// Fit camera to bounds.
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const box = new THREE.Box3().setFromObject(meshRoot);
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const center = box.getCenter(new THREE.Vector3());
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const size = box.getSize(new THREE.Vector3());
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const radius = Math.max(size.x, size.y, size.z) / 2 || 10;
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meshRoot.position.sub(center);
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camera.position.set(radius * 2.2, radius * 1.6, radius * 2.6);
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camera.near = radius / 10;
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camera.far = radius * 40;
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camera.updateProjectionMatrix();
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camera.lookAt(0, 0, 0);
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})
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.catch(() => {
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container.innerHTML = '<p class="empty-hint">Could not load this model.</p>';
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});
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let isDragging = false;
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let lastX = 0, lastY = 0;
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renderer.domElement.addEventListener('mousedown', (e) => {
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isDragging = true; lastX = e.clientX; lastY = e.clientY;
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});
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window.addEventListener('mouseup', () => { isDragging = false; });
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window.addEventListener('mousemove', (e) => {
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if (!isDragging || !meshRoot) return;
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const dx = e.clientX - lastX, dy = e.clientY - lastY;
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lastX = e.clientX; lastY = e.clientY;
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meshRoot.rotation.y += dx * 0.01;
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meshRoot.rotation.x += dy * 0.01;
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});
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renderer.domElement.addEventListener('wheel', (e) => {
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e.preventDefault();
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camera.position.multiplyScalar(e.deltaY > 0 ? 1.06 : 0.94);
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}, { passive: false });
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function animate() {
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rafId = requestAnimationFrame(animate);
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renderer.render(scene, camera);
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}
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animate();
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}
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function dispose() {
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if (rafId) { cancelAnimationFrame(rafId); rafId = null; }
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if (renderer) {
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if (meshRoot) disposeObject(meshRoot);
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renderer.dispose();
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if (renderer.domElement && renderer.domElement.parentNode) {
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renderer.domElement.parentNode.removeChild(renderer.domElement);
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}
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}
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renderer = null;
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scene = null;
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camera = null;
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meshRoot = null;
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}
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window.PacksModelViewer = { render: render, dispose: dispose };
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})();
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