Add support for 3d models in assets and attachments

src/main/resources/static/js/admin/console.js

@@ -1,5 +1,6 @@
 import { isAudioAsset } from "../media/audio.js";
-import { isCodeAsset, isGifAsset, isVideoAsset, isVideoElement } from "../broadcast/assetKinds.js";
+import { isCodeAsset, isGifAsset, isModelAsset, isVideoAsset, isVideoElement } from "../broadcast/assetKinds.js";
+import { createModelManager } from "../media/modelManager.js";
 import {
     ensureLayerPosition as ensureLayerPositionForState,
     getLayerOrder as getLayerOrderForState,
@@ -75,6 +76,7 @@ export function createAdminConsole({
     const aspectLockState = new Map();
     const commitSizeChange = debounce(() => applyTransformFromInputs(), 180);
     const audioUnlockEvents = ["pointerdown", "keydown", "touchstart"];
+    const modelManager = createModelManager({ requestDraw: () => requestDraw() });
 
     let drawPending = false;
     let layerOrder = [];
@@ -693,7 +695,11 @@ export function createAdminConsole({
         let drawSource = null;
         let ready = false;
         let showPlayOverlay = false;
-        if (isVideoAsset(asset) || isGifAsset(asset)) {
+        if (isModelAsset(asset)) {
+            const model = modelManager.ensureModel(asset);
+            drawSource = model?.canvas || null;
+            ready = !!model?.ready;
+        } else if (isVideoAsset(asset) || isGifAsset(asset)) {
             drawSource = ensureCanvasPreview(asset);
             ready = isDrawable(drawSource);
             showPlayOverlay = true;
@@ -978,6 +984,7 @@ export function createAdminConsole({
                 IMAGE: "Image",
                 VIDEO: "Video",
                 AUDIO: "Audio",
+                MODEL: "3D Model",
                 SCRIPT: "Script",
                 OTHER: "Other",
             };
@@ -1020,6 +1027,7 @@ export function createAdminConsole({
 
     function clearMedia(assetId) {
         mediaCache.delete(assetId);
+        modelManager.clearModel(assetId);
         const cachedPreview = previewCache.get(assetId);
         if (cachedPreview && cachedPreview.startsWith("blob:")) {
             URL.revokeObjectURL(cachedPreview);
@@ -1143,6 +1151,10 @@ export function createAdminConsole({
             return null;
         }
 
+        if (isModelAsset(asset)) {
+            return null;
+        }
+
         if (isVideoAsset(asset)) {
             return null;
         }

src/main/resources/static/js/broadcast/assetKinds.js

@@ -16,6 +16,13 @@ export function isVideoAsset(asset) {
     return asset?.mediaType?.startsWith("video/");
 }
 
+export function isModelAsset(asset) {
+    if (asset?.assetType) {
+        return asset.assetType === "MODEL";
+    }
+    return asset?.mediaType?.startsWith("model/");
+}
+
 export function isVideoElement(element) {
     return element?.tagName === "VIDEO";
 }

src/main/resources/static/js/broadcast/renderer.js

@@ -1,10 +1,11 @@
 import { AssetKind, MIN_FRAME_TIME, VISIBILITY_THRESHOLD } from "./constants.js";
 import { createBroadcastState } from "./state.js";
-import { getAssetKind, isCodeAsset, isVisualAsset, isVideoElement } from "./assetKinds.js";
+import { getAssetKind, isCodeAsset, isModelAsset, isVisualAsset, isVideoElement } from "./assetKinds.js";
 import { ensureLayerPosition, getLayerOrder, getRenderOrder } from "./layers.js";
 import { getVisibilityState, smoothState } from "./visibility.js";
 import { createAudioManager } from "./audioManager.js";
 import { createMediaManager } from "./mediaManager.js";
+import { createModelManager } from "../media/modelManager.js";
 
 export class BroadcastRenderer {
     constructor({ canvas, scriptCanvas, broadcaster, showToast }) {
@@ -37,6 +38,7 @@ export class BroadcastRenderer {
             supportsAnimatedDecode: this.supportsAnimatedDecode,
             canPlayProbe: this.canPlayProbe,
         });
+        this.modelManager = createModelManager({ requestDraw: () => this.draw() });
 
         this.applyCanvasSettings(this.state.canvasSettings);
         globalThis.addEventListener("resize", () => {
@@ -105,6 +107,7 @@ export class BroadcastRenderer {
         this.state.assets.delete(assetId);
         this.state.layerOrder = this.state.layerOrder.filter((id) => id !== assetId);
         this.mediaManager.clearMedia(assetId);
+        this.modelManager.clearModel(assetId);
         this.stopUserJavaScriptWorker(assetId);
         this.state.renderStates.delete(assetId);
         this.state.visibilityStates.delete(assetId);
@@ -348,9 +351,17 @@ export class BroadcastRenderer {
             return;
         }
 
-        const media = this.mediaManager.ensureMedia(asset);
-        const drawSource = media?.isAnimated ? media.bitmap : media;
-        const ready = this.isDrawable(media);
+        let drawSource = null;
+        let ready = false;
+        if (isModelAsset(asset)) {
+            const model = this.modelManager.ensureModel(asset);
+            drawSource = model?.canvas || null;
+            ready = !!model?.ready;
+        } else {
+            const media = this.mediaManager.ensureMedia(asset);
+            drawSource = media?.isAnimated ? media.bitmap : media;
+            ready = this.isDrawable(media);
+        }
         if (ready && drawSource) {
             this.ctx.drawImage(drawSource, -halfWidth, -halfHeight, renderState.width, renderState.height);
         }

src/main/resources/static/js/broadcast/script-worker.js

@@ -8,6 +8,37 @@ let lastTick = 0;
 let startTime = 0;
 const tickIntervalMs = 1000 / 60;
 const errorKeys = new Set();
+const allowedImportUrls = new Set();
+const nativeImportScripts = typeof self.importScripts === "function" ? self.importScripts.bind(self) : null;
+const sharedDependencyUrls = ["/js/vendor/three.min.js", "/js/vendor/GLTFLoader.js", "/js/vendor/OBJLoader.js"];
+
+function normalizeUrl(url) {
+    try {
+        return new URL(url, self.location?.href || "http://localhost").toString();
+    } catch (_error) {
+        return "";
+    }
+}
+
+function registerAllowedImport(url) {
+    const normalized = normalizeUrl(url);
+    if (normalized) {
+        allowedImportUrls.add(normalized);
+    }
+}
+
+sharedDependencyUrls.forEach(registerAllowedImport);
+
+function importAllowedScripts(...urls) {
+    if (!nativeImportScripts) {
+        throw new Error("Network access is disabled in asset scripts.");
+    }
+    const resolved = urls.map((url) => normalizeUrl(url));
+    if (resolved.some((url) => !allowedImportUrls.has(url))) {
+        throw new Error("Network access is disabled in asset scripts.");
+    }
+    return nativeImportScripts(...resolved);
+}
 
 function disableNetworkApis() {
     const nativeFetch = typeof self.fetch === "function" ? self.fetch.bind(self) : null;
@@ -26,9 +57,7 @@ function disableNetworkApis() {
         XMLHttpRequest: undefined,
         WebSocket: undefined,
         EventSource: undefined,
-        importScripts: () => {
-            throw new Error("Network access is disabled in asset scripts.");
-        },
+        importScripts: (...urls) => importAllowedScripts(...urls),
     };
 
     Object.entries(blockedApis).forEach(([key, value]) => {
@@ -53,14 +82,15 @@ function disableNetworkApis() {
 
 disableNetworkApis();
 
-function normalizeUrl(url) {
-    try {
-        return new URL(url, self.location?.href || "http://localhost").toString();
-    } catch (_error) {
-        return "";
+function loadSharedDependencies() {
+    if (!nativeImportScripts || sharedDependencyUrls.length === 0) {
+        return;
     }
+    importAllowedScripts(...sharedDependencyUrls);
 }
 
+loadSharedDependencies();
+
 function refreshAllowedFetchUrls() {
     allowedFetchUrls.clear();
     scripts.forEach((script) => {

src/main/resources/static/js/media/modelManager.js

@@ -0,0 +1,170 @@
+const DEFAULT_WIDTH = 640;
+const DEFAULT_HEIGHT = 360;
+const MAX_PIXEL_RATIO = 2;
+
+function getThree() {
+    return globalThis.THREE || null;
+}
+
+function clampSize(value, fallback) {
+    if (!Number.isFinite(value) || value <= 0) {
+        return fallback;
+    }
+    return Math.max(1, Math.round(value));
+}
+
+function pickLoader(asset, three) {
+    const url = (asset?.url || "").toLowerCase();
+    if ((asset?.mediaType === "model/obj" || url.endsWith(".obj")) && typeof three.OBJLoader === "function") {
+        return { loader: new three.OBJLoader(), kind: "obj" };
+    }
+    if (typeof three.GLTFLoader === "function") {
+        return { loader: new three.GLTFLoader(), kind: "gltf" };
+    }
+    return null;
+}
+
+function centerAndScale(model, three) {
+    const box = new three.Box3().setFromObject(model);
+    const size = box.getSize(new three.Vector3());
+    const center = box.getCenter(new three.Vector3());
+    model.position.sub(center);
+    const maxDim = Math.max(size.x, size.y, size.z) || 1;
+    const scale = 1.5 / maxDim;
+    model.scale.setScalar(scale);
+    return { size, maxDim };
+}
+
+function disposeModel(model) {
+    if (!model?.traverse) {
+        return;
+    }
+    model.traverse((child) => {
+        if (child.geometry?.dispose) {
+            child.geometry.dispose();
+        }
+        if (child.material) {
+            if (Array.isArray(child.material)) {
+                child.material.forEach((material) => material?.dispose?.());
+            } else {
+                child.material.dispose?.();
+            }
+        }
+    });
+}
+
+export function createModelManager({ requestDraw } = {}) {
+    const controllers = new Map();
+
+    function clearModel(assetId) {
+        const controller = controllers.get(assetId);
+        if (!controller) {
+            return;
+        }
+        if (controller.model) {
+            disposeModel(controller.model);
+        }
+        controller.renderer?.dispose?.();
+        controllers.delete(assetId);
+    }
+
+    function ensureModel(asset) {
+        const three = getThree();
+        if (!three || !asset?.id || !asset?.url) {
+            return null;
+        }
+
+        let controller = controllers.get(asset.id);
+        if (controller && controller.url !== asset.url) {
+            clearModel(asset.id);
+            controller = null;
+        }
+
+        if (!controller) {
+            const canvas = document.createElement("canvas");
+            const renderer = new three.WebGLRenderer({ canvas, alpha: true, antialias: true });
+            renderer.setPixelRatio(Math.min(globalThis.devicePixelRatio || 1, MAX_PIXEL_RATIO));
+            renderer.setClearColor(0x000000, 0);
+
+            const scene = new three.Scene();
+            const camera = new three.PerspectiveCamera(35, 1, 0.1, 100);
+            const ambient = new three.AmbientLight(0xffffff, 0.85);
+            const directional = new three.DirectionalLight(0xffffff, 0.65);
+            directional.position.set(1, 1, 1);
+            scene.add(ambient);
+            scene.add(directional);
+
+            controller = {
+                id: asset.id,
+                url: asset.url,
+                canvas,
+                renderer,
+                scene,
+                camera,
+                model: null,
+                ready: false,
+                startTime: performance.now(),
+                width: 0,
+                height: 0,
+            };
+
+            const loaderChoice = pickLoader(asset, three);
+            if (loaderChoice) {
+                if (loaderChoice.kind === "obj") {
+                    loaderChoice.loader.load(asset.url, (obj) => {
+                        const { maxDim } = centerAndScale(obj, three);
+                        controller.model = obj;
+                        controller.scene.add(obj);
+                        const distance = maxDim * 2.2;
+                        controller.camera.position.set(0, 0, distance);
+                        controller.camera.near = Math.max(0.01, distance / 100);
+                        controller.camera.far = distance * 100;
+                        controller.camera.updateProjectionMatrix();
+                        controller.ready = true;
+                        requestDraw?.();
+                    });
+                } else {
+                    loaderChoice.loader.load(asset.url, (gltf) => {
+                        const model = gltf.scene || gltf.scenes?.[0];
+                        if (!model) {
+                            return;
+                        }
+                        const { maxDim } = centerAndScale(model, three);
+                        controller.model = model;
+                        controller.scene.add(model);
+                        const distance = maxDim * 2.2;
+                        controller.camera.position.set(0, 0, distance);
+                        controller.camera.near = Math.max(0.01, distance / 100);
+                        controller.camera.far = distance * 100;
+                        controller.camera.updateProjectionMatrix();
+                        controller.ready = true;
+                        requestDraw?.();
+                    });
+                }
+            }
+
+            controllers.set(asset.id, controller);
+        }
+
+        const width = clampSize(asset.width, DEFAULT_WIDTH);
+        const height = clampSize(asset.height, DEFAULT_HEIGHT);
+        if (controller.width !== width || controller.height !== height) {
+            controller.width = width;
+            controller.height = height;
+            controller.renderer.setSize(width, height, false);
+            controller.camera.aspect = width / height;
+            controller.camera.updateProjectionMatrix();
+        }
+
+        if (controller.ready && controller.model) {
+            const now = performance.now();
+            controller.model.rotation.y = (now - controller.startTime) * 0.0004;
+            controller.renderer.render(controller.scene, controller.camera);
+        }
+
+        return { canvas: controller.canvas, ready: controller.ready };
+    }
+
+    return { ensureModel, clearModel };
+}
+

src/main/resources/static/js/vendor/OBJLoader.js

@@ -0,0 +1,789 @@
+( function () {
+
+	// o object_name | g group_name
+	const _object_pattern = /^[og]\s*(.+)?/;
+	// mtllib file_reference
+	const _material_library_pattern = /^mtllib /;
+	// usemtl material_name
+	const _material_use_pattern = /^usemtl /;
+	// usemap map_name
+	const _map_use_pattern = /^usemap /;
+	const _face_vertex_data_separator_pattern = /\s+/;
+	const _vA = new THREE.Vector3();
+	const _vB = new THREE.Vector3();
+	const _vC = new THREE.Vector3();
+	const _ab = new THREE.Vector3();
+	const _cb = new THREE.Vector3();
+	const _color = new THREE.Color();
+	function ParserState() {
+
+		const state = {
+			objects: [],
+			object: {},
+			vertices: [],
+			normals: [],
+			colors: [],
+			uvs: [],
+			materials: {},
+			materialLibraries: [],
+			startObject: function ( name, fromDeclaration ) {
+
+				// If the current object (initial from reset) is not from a g/o declaration in the parsed
+				// file. We need to use it for the first parsed g/o to keep things in sync.
+				if ( this.object && this.object.fromDeclaration === false ) {
+
+					this.object.name = name;
+					this.object.fromDeclaration = fromDeclaration !== false;
+					return;
+
+				}
+
+				const previousMaterial = this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined;
+				if ( this.object && typeof this.object._finalize === 'function' ) {
+
+					this.object._finalize( true );
+
+				}
+
+				this.object = {
+					name: name || '',
+					fromDeclaration: fromDeclaration !== false,
+					geometry: {
+						vertices: [],
+						normals: [],
+						colors: [],
+						uvs: [],
+						hasUVIndices: false
+					},
+					materials: [],
+					smooth: true,
+					startMaterial: function ( name, libraries ) {
+
+						const previous = this._finalize( false );
+
+						// New usemtl declaration overwrites an inherited material, except if faces were declared
+						// after the material, then it must be preserved for proper MultiMaterial continuation.
+						if ( previous && ( previous.inherited || previous.groupCount <= 0 ) ) {
+
+							this.materials.splice( previous.index, 1 );
+
+						}
+
+						const material = {
+							index: this.materials.length,
+							name: name || '',
+							mtllib: Array.isArray( libraries ) && libraries.length > 0 ? libraries[ libraries.length - 1 ] : '',
+							smooth: previous !== undefined ? previous.smooth : this.smooth,
+							groupStart: previous !== undefined ? previous.groupEnd : 0,
+							groupEnd: - 1,
+							groupCount: - 1,
+							inherited: false,
+							clone: function ( index ) {
+
+								const cloned = {
+									index: typeof index === 'number' ? index : this.index,
+									name: this.name,
+									mtllib: this.mtllib,
+									smooth: this.smooth,
+									groupStart: 0,
+									groupEnd: - 1,
+									groupCount: - 1,
+									inherited: false
+								};
+								cloned.clone = this.clone.bind( cloned );
+								return cloned;
+
+							}
+						};
+						this.materials.push( material );
+						return material;
+
+					},
+					currentMaterial: function () {
+
+						if ( this.materials.length > 0 ) {
+
+							return this.materials[ this.materials.length - 1 ];
+
+						}
+
+						return undefined;
+
+					},
+					_finalize: function ( end ) {
+
+						const lastMultiMaterial = this.currentMaterial();
+						if ( lastMultiMaterial && lastMultiMaterial.groupEnd === - 1 ) {
+
+							lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;
+							lastMultiMaterial.groupCount = lastMultiMaterial.groupEnd - lastMultiMaterial.groupStart;
+							lastMultiMaterial.inherited = false;
+
+						}
+
+						// Ignore objects tail materials if no face declarations followed them before a new o/g started.
+						if ( end && this.materials.length > 1 ) {
+
+							for ( let mi = this.materials.length - 1; mi >= 0; mi -- ) {
+
+								if ( this.materials[ mi ].groupCount <= 0 ) {
+
+									this.materials.splice( mi, 1 );
+
+								}
+
+							}
+
+						}
+
+						// Guarantee at least one empty material, this makes the creation later more straight forward.
+						if ( end && this.materials.length === 0 ) {
+
+							this.materials.push( {
+								name: '',
+								smooth: this.smooth
+							} );
+
+						}
+
+						return lastMultiMaterial;
+
+					}
+				};
+
+				// Inherit previous objects material.
+				// Spec tells us that a declared material must be set to all objects until a new material is declared.
+				// If a usemtl declaration is encountered while this new object is being parsed, it will
+				// overwrite the inherited material. Exception being that there was already face declarations
+				// to the inherited material, then it will be preserved for proper MultiMaterial continuation.
+
+				if ( previousMaterial && previousMaterial.name && typeof previousMaterial.clone === 'function' ) {
+
+					const declared = previousMaterial.clone( 0 );
+					declared.inherited = true;
+					this.object.materials.push( declared );
+
+				}
+
+				this.objects.push( this.object );
+
+			},
+			finalize: function () {
+
+				if ( this.object && typeof this.object._finalize === 'function' ) {
+
+					this.object._finalize( true );
+
+				}
+
+			},
+			parseVertexIndex: function ( value, len ) {
+
+				const index = parseInt( value, 10 );
+				return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
+
+			},
+			parseNormalIndex: function ( value, len ) {
+
+				const index = parseInt( value, 10 );
+				return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
+
+			},
+			parseUVIndex: function ( value, len ) {
+
+				const index = parseInt( value, 10 );
+				return ( index >= 0 ? index - 1 : index + len / 2 ) * 2;
+
+			},
+			addVertex: function ( a, b, c ) {
+
+				const src = this.vertices;
+				const dst = this.object.geometry.vertices;
+				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
+				dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
+				dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
+
+			},
+			addVertexPoint: function ( a ) {
+
+				const src = this.vertices;
+				const dst = this.object.geometry.vertices;
+				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
+
+			},
+			addVertexLine: function ( a ) {
+
+				const src = this.vertices;
+				const dst = this.object.geometry.vertices;
+				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
+
+			},
+			addNormal: function ( a, b, c ) {
+
+				const src = this.normals;
+				const dst = this.object.geometry.normals;
+				dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
+				dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
+				dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
+
+			},
+			addFaceNormal: function ( a, b, c ) {
+
+				const src = this.vertices;
+				const dst = this.object.geometry.normals;
+				_vA.fromArray( src, a );
+				_vB.fromArray( src, b );
+				_vC.fromArray( src, c );
+				_cb.subVectors( _vC, _vB );
+				_ab.subVectors( _vA, _vB );
+				_cb.cross( _ab );
+				_cb.normalize();
+				dst.push( _cb.x, _cb.y, _cb.z );
+				dst.push( _cb.x, _cb.y, _cb.z );
+				dst.push( _cb.x, _cb.y, _cb.z );
+
+			},
+			addColor: function ( a, b, c ) {
+
+				const src = this.colors;
+				const dst = this.object.geometry.colors;
+				if ( src[ a ] !== undefined ) dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
+				if ( src[ b ] !== undefined ) dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
+				if ( src[ c ] !== undefined ) dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
+
+			},
+			addUV: function ( a, b, c ) {
+
+				const src = this.uvs;
+				const dst = this.object.geometry.uvs;
+				dst.push( src[ a + 0 ], src[ a + 1 ] );
+				dst.push( src[ b + 0 ], src[ b + 1 ] );
+				dst.push( src[ c + 0 ], src[ c + 1 ] );
+
+			},
+			addDefaultUV: function () {
+
+				const dst = this.object.geometry.uvs;
+				dst.push( 0, 0 );
+				dst.push( 0, 0 );
+				dst.push( 0, 0 );
+
+			},
+			addUVLine: function ( a ) {
+
+				const src = this.uvs;
+				const dst = this.object.geometry.uvs;
+				dst.push( src[ a + 0 ], src[ a + 1 ] );
+
+			},
+			addFace: function ( a, b, c, ua, ub, uc, na, nb, nc ) {
+
+				const vLen = this.vertices.length;
+				let ia = this.parseVertexIndex( a, vLen );
+				let ib = this.parseVertexIndex( b, vLen );
+				let ic = this.parseVertexIndex( c, vLen );
+				this.addVertex( ia, ib, ic );
+				this.addColor( ia, ib, ic );
+
+				// normals
+
+				if ( na !== undefined && na !== '' ) {
+
+					const nLen = this.normals.length;
+					ia = this.parseNormalIndex( na, nLen );
+					ib = this.parseNormalIndex( nb, nLen );
+					ic = this.parseNormalIndex( nc, nLen );
+					this.addNormal( ia, ib, ic );
+
+				} else {
+
+					this.addFaceNormal( ia, ib, ic );
+
+				}
+
+				// uvs
+
+				if ( ua !== undefined && ua !== '' ) {
+
+					const uvLen = this.uvs.length;
+					ia = this.parseUVIndex( ua, uvLen );
+					ib = this.parseUVIndex( ub, uvLen );
+					ic = this.parseUVIndex( uc, uvLen );
+					this.addUV( ia, ib, ic );
+					this.object.geometry.hasUVIndices = true;
+
+				} else {
+
+					// add placeholder values (for inconsistent face definitions)
+
+					this.addDefaultUV();
+
+				}
+
+			},
+			addPointGeometry: function ( vertices ) {
+
+				this.object.geometry.type = 'Points';
+				const vLen = this.vertices.length;
+				for ( let vi = 0, l = vertices.length; vi < l; vi ++ ) {
+
+					const index = this.parseVertexIndex( vertices[ vi ], vLen );
+					this.addVertexPoint( index );
+					this.addColor( index );
+
+				}
+
+			},
+			addLineGeometry: function ( vertices, uvs ) {
+
+				this.object.geometry.type = 'Line';
+				const vLen = this.vertices.length;
+				const uvLen = this.uvs.length;
+				for ( let vi = 0, l = vertices.length; vi < l; vi ++ ) {
+
+					this.addVertexLine( this.parseVertexIndex( vertices[ vi ], vLen ) );
+
+				}
+
+				for ( let uvi = 0, l = uvs.length; uvi < l; uvi ++ ) {
+
+					this.addUVLine( this.parseUVIndex( uvs[ uvi ], uvLen ) );
+
+				}
+
+			}
+		};
+		state.startObject( '', false );
+		return state;
+
+	}
+
+	//
+
+	class OBJLoader extends THREE.Loader {
+
+		constructor( manager ) {
+
+			super( manager );
+			this.materials = null;
+
+		}
+		load( url, onLoad, onProgress, onError ) {
+
+			const scope = this;
+			const loader = new THREE.FileLoader( this.manager );
+			loader.setPath( this.path );
+			loader.setRequestHeader( this.requestHeader );
+			loader.setWithCredentials( this.withCredentials );
+			loader.load( url, function ( text ) {
+
+				try {
+
+					onLoad( scope.parse( text ) );
+
+				} catch ( e ) {
+
+					if ( onError ) {
+
+						onError( e );
+
+					} else {
+
+						console.error( e );
+
+					}
+
+					scope.manager.itemError( url );
+
+				}
+
+			}, onProgress, onError );
+
+		}
+		setMaterials( materials ) {
+
+			this.materials = materials;
+			return this;
+
+		}
+		parse( text ) {
+
+			const state = new ParserState();
+			if ( text.indexOf( '\r\n' ) !== - 1 ) {
+
+				// This is faster than String.split with regex that splits on both
+				text = text.replace( /\r\n/g, '\n' );
+
+			}
+
+			if ( text.indexOf( '\\\n' ) !== - 1 ) {
+
+				// join lines separated by a line continuation character (\)
+				text = text.replace( /\\\n/g, '' );
+
+			}
+
+			const lines = text.split( '\n' );
+			let result = [];
+			for ( let i = 0, l = lines.length; i < l; i ++ ) {
+
+				const line = lines[ i ].trimStart();
+				if ( line.length === 0 ) continue;
+				const lineFirstChar = line.charAt( 0 );
+
+				// @todo invoke passed in handler if any
+				if ( lineFirstChar === '#' ) continue;
+				if ( lineFirstChar === 'v' ) {
+
+					const data = line.split( _face_vertex_data_separator_pattern );
+					switch ( data[ 0 ] ) {
+
+						case 'v':
+							state.vertices.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ), parseFloat( data[ 3 ] ) );
+							if ( data.length >= 7 ) {
+
+								_color.setRGB( parseFloat( data[ 4 ] ), parseFloat( data[ 5 ] ), parseFloat( data[ 6 ] ) ).convertSRGBToLinear();
+								state.colors.push( _color.r, _color.g, _color.b );
+
+							} else {
+
+								// if no colors are defined, add placeholders so color and vertex indices match
+
+								state.colors.push( undefined, undefined, undefined );
+
+							}
+
+							break;
+						case 'vn':
+							state.normals.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ), parseFloat( data[ 3 ] ) );
+							break;
+						case 'vt':
+							state.uvs.push( parseFloat( data[ 1 ] ), parseFloat( data[ 2 ] ) );
+							break;
+
+					}
+
+				} else if ( lineFirstChar === 'f' ) {
+
+					const lineData = line.slice( 1 ).trim();
+					const vertexData = lineData.split( _face_vertex_data_separator_pattern );
+					const faceVertices = [];
+
+					// Parse the face vertex data into an easy to work with format
+
+					for ( let j = 0, jl = vertexData.length; j < jl; j ++ ) {
+
+						const vertex = vertexData[ j ];
+						if ( vertex.length > 0 ) {
+
+							const vertexParts = vertex.split( '/' );
+							faceVertices.push( vertexParts );
+
+						}
+
+					}
+
+					// Draw an edge between the first vertex and all subsequent vertices to form an n-gon
+
+					const v1 = faceVertices[ 0 ];
+					for ( let j = 1, jl = faceVertices.length - 1; j < jl; j ++ ) {
+
+						const v2 = faceVertices[ j ];
+						const v3 = faceVertices[ j + 1 ];
+						state.addFace( v1[ 0 ], v2[ 0 ], v3[ 0 ], v1[ 1 ], v2[ 1 ], v3[ 1 ], v1[ 2 ], v2[ 2 ], v3[ 2 ] );
+
+					}
+
+				} else if ( lineFirstChar === 'l' ) {
+
+					const lineParts = line.substring( 1 ).trim().split( ' ' );
+					let lineVertices = [];
+					const lineUVs = [];
+					if ( line.indexOf( '/' ) === - 1 ) {
+
+						lineVertices = lineParts;
+
+					} else {
+
+						for ( let li = 0, llen = lineParts.length; li < llen; li ++ ) {
+
+							const parts = lineParts[ li ].split( '/' );
+							if ( parts[ 0 ] !== '' ) lineVertices.push( parts[ 0 ] );
+							if ( parts[ 1 ] !== '' ) lineUVs.push( parts[ 1 ] );
+
+						}
+
+					}
+
+					state.addLineGeometry( lineVertices, lineUVs );
+
+				} else if ( lineFirstChar === 'p' ) {
+
+					const lineData = line.slice( 1 ).trim();
+					const pointData = lineData.split( ' ' );
+					state.addPointGeometry( pointData );
+
+				} else if ( ( result = _object_pattern.exec( line ) ) !== null ) {
+
+					// o object_name
+					// or
+					// g group_name
+
+					// WORKAROUND: https://bugs.chromium.org/p/v8/issues/detail?id=2869
+					// let name = result[ 0 ].slice( 1 ).trim();
+					const name = ( ' ' + result[ 0 ].slice( 1 ).trim() ).slice( 1 );
+					state.startObject( name );
+
+				} else if ( _material_use_pattern.test( line ) ) {
+
+					// material
+
+					state.object.startMaterial( line.substring( 7 ).trim(), state.materialLibraries );
+
+				} else if ( _material_library_pattern.test( line ) ) {
+
+					// mtl file
+
+					state.materialLibraries.push( line.substring( 7 ).trim() );
+
+				} else if ( _map_use_pattern.test( line ) ) {
+
+					// the line is parsed but ignored since the loader assumes textures are defined MTL files
+					// (according to https://www.okino.com/conv/imp_wave.htm, 'usemap' is the old-style Wavefront texture reference method)
+
+					console.warn( 'THREE.OBJLoader: Rendering identifier "usemap" not supported. Textures must be defined in MTL files.' );
+
+				} else if ( lineFirstChar === 's' ) {
+
+					result = line.split( ' ' );
+
+					// smooth shading
+
+					// @todo Handle files that have varying smooth values for a set of faces inside one geometry,
+					// but does not define a usemtl for each face set.
+					// This should be detected and a dummy material created (later MultiMaterial and geometry groups).
+					// This requires some care to not create extra material on each smooth value for "normal" obj files.
+					// where explicit usemtl defines geometry groups.
+					// Example asset: examples/models/obj/cerberus/Cerberus.obj
+
+					/*
+        	 * http://paulbourke.net/dataformats/obj/
+        	 *
+        	 * From chapter "Grouping" Syntax explanation "s group_number":
+        	 * "group_number is the smoothing group number. To turn off smoothing groups, use a value of 0 or off.
+        	 * Polygonal elements use group numbers to put elements in different smoothing groups. For free-form
+        	 * surfaces, smoothing groups are either turned on or off; there is no difference between values greater
+        	 * than 0."
+        	 */
+					if ( result.length > 1 ) {
+
+						const value = result[ 1 ].trim().toLowerCase();
+						state.object.smooth = value !== '0' && value !== 'off';
+
+					} else {
+
+						// ZBrush can produce "s" lines #11707
+						state.object.smooth = true;
+
+					}
+
+					const material = state.object.currentMaterial();
+					if ( material ) material.smooth = state.object.smooth;
+
+				} else {
+
+					// Handle null terminated files without exception
+					if ( line === '\0' ) continue;
+					console.warn( 'THREE.OBJLoader: Unexpected line: "' + line + '"' );
+
+				}
+
+			}
+
+			state.finalize();
+			const container = new THREE.Group();
+			container.materialLibraries = [].concat( state.materialLibraries );
+			const hasPrimitives = ! ( state.objects.length === 1 && state.objects[ 0 ].geometry.vertices.length === 0 );
+			if ( hasPrimitives === true ) {
+
+				for ( let i = 0, l = state.objects.length; i < l; i ++ ) {
+
+					const object = state.objects[ i ];
+					const geometry = object.geometry;
+					const materials = object.materials;
+					const isLine = geometry.type === 'Line';
+					const isPoints = geometry.type === 'Points';
+					let hasVertexColors = false;
+
+					// Skip o/g line declarations that did not follow with any faces
+					if ( geometry.vertices.length === 0 ) continue;
+					const buffergeometry = new THREE.BufferGeometry();
+					buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( geometry.vertices, 3 ) );
+					if ( geometry.normals.length > 0 ) {
+
+						buffergeometry.setAttribute( 'normal', new THREE.Float32BufferAttribute( geometry.normals, 3 ) );
+
+					}
+
+					if ( geometry.colors.length > 0 ) {
+
+						hasVertexColors = true;
+						buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( geometry.colors, 3 ) );
+
+					}
+
+					if ( geometry.hasUVIndices === true ) {
+
+						buffergeometry.setAttribute( 'uv', new THREE.Float32BufferAttribute( geometry.uvs, 2 ) );
+
+					}
+
+					// Create materials
+
+					const createdMaterials = [];
+					for ( let mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
+
+						const sourceMaterial = materials[ mi ];
+						const materialHash = sourceMaterial.name + '_' + sourceMaterial.smooth + '_' + hasVertexColors;
+						let material = state.materials[ materialHash ];
+						if ( this.materials !== null ) {
+
+							material = this.materials.create( sourceMaterial.name );
+
+							// mtl etc. loaders probably can't create line materials correctly, copy properties to a line material.
+							if ( isLine && material && ! ( material instanceof THREE.LineBasicMaterial ) ) {
+
+								const materialLine = new THREE.LineBasicMaterial();
+								THREE.Material.prototype.copy.call( materialLine, material );
+								materialLine.color.copy( material.color );
+								material = materialLine;
+
+							} else if ( isPoints && material && ! ( material instanceof THREE.PointsMaterial ) ) {
+
+								const materialPoints = new THREE.PointsMaterial( {
+									size: 10,
+									sizeAttenuation: false
+								} );
+								THREE.Material.prototype.copy.call( materialPoints, material );
+								materialPoints.color.copy( material.color );
+								materialPoints.map = material.map;
+								material = materialPoints;
+
+							}
+
+						}
+
+						if ( material === undefined ) {
+
+							if ( isLine ) {
+
+								material = new THREE.LineBasicMaterial();
+
+							} else if ( isPoints ) {
+
+								material = new THREE.PointsMaterial( {
+									size: 1,
+									sizeAttenuation: false
+								} );
+
+							} else {
+
+								material = new THREE.MeshPhongMaterial();
+
+							}
+
+							material.name = sourceMaterial.name;
+							material.flatShading = sourceMaterial.smooth ? false : true;
+							material.vertexColors = hasVertexColors;
+							state.materials[ materialHash ] = material;
+
+						}
+
+						createdMaterials.push( material );
+
+					}
+
+					// Create mesh
+
+					let mesh;
+					if ( createdMaterials.length > 1 ) {
+
+						for ( let mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
+
+							const sourceMaterial = materials[ mi ];
+							buffergeometry.addGroup( sourceMaterial.groupStart, sourceMaterial.groupCount, mi );
+
+						}
+
+						if ( isLine ) {
+
+							mesh = new THREE.LineSegments( buffergeometry, createdMaterials );
+
+						} else if ( isPoints ) {
+
+							mesh = new THREE.Points( buffergeometry, createdMaterials );
+
+						} else {
+
+							mesh = new THREE.Mesh( buffergeometry, createdMaterials );
+
+						}
+
+					} else {
+
+						if ( isLine ) {
+
+							mesh = new THREE.LineSegments( buffergeometry, createdMaterials[ 0 ] );
+
+						} else if ( isPoints ) {
+
+							mesh = new THREE.Points( buffergeometry, createdMaterials[ 0 ] );
+
+						} else {
+
+							mesh = new THREE.Mesh( buffergeometry, createdMaterials[ 0 ] );
+
+						}
+
+					}
+
+					mesh.name = object.name;
+					container.add( mesh );
+
+				}
+
+			} else {
+
+				// if there is only the default parser state object with no geometry data, interpret data as point cloud
+
+				if ( state.vertices.length > 0 ) {
+
+					const material = new THREE.PointsMaterial( {
+						size: 1,
+						sizeAttenuation: false
+					} );
+					const buffergeometry = new THREE.BufferGeometry();
+					buffergeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( state.vertices, 3 ) );
+					if ( state.colors.length > 0 && state.colors[ 0 ] !== undefined ) {
+
+						buffergeometry.setAttribute( 'color', new THREE.Float32BufferAttribute( state.colors, 3 ) );
+						material.vertexColors = true;
+
+					}
+
+					const points = new THREE.Points( buffergeometry, material );
+					container.add( points );
+
+				}
+
+			}
+
+			return container;
+
+		}
+
+	}
+
+	THREE.OBJLoader = OBJLoader;
+
+} )();