@loaders.gl/obj/dist/index.cjs.map

Framework-independent loader for the OBJ format

{
  "version": 3,
  "sources": ["index.js", "lib/parse-obj.js", "lib/parse-obj-meshes.js", "lib/get-obj-schema.js", "obj-loader.js", "lib/parse-mtl.js", "mtl-loader.js"],
  "sourcesContent": ["// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright vis.gl contributors\nimport { parseOBJ } from \"./lib/parse-obj.js\";\nimport { OBJLoader as OBJWorkerLoader } from \"./obj-loader.js\";\nimport { parseMTL } from \"./lib/parse-mtl.js\";\nimport { MTLLoader as MTLWorkerLoader } from \"./mtl-loader.js\";\nexport { OBJWorkerLoader };\n/**\n * Loader for the OBJ geometry format\n */\nexport const OBJLoader = {\n    ...OBJWorkerLoader,\n    parse: async (arrayBuffer, options) => parseOBJ(new TextDecoder().decode(arrayBuffer), options),\n    parseTextSync: (text, options) => parseOBJ(text, options)\n};\n// MTLLoader\n/**\n * Loader for the MTL material format\n */\nexport const MTLLoader = {\n    ...MTLWorkerLoader,\n    parse: async (arrayBuffer, options) => parseMTL(new TextDecoder().decode(arrayBuffer), options?.mtl),\n    parseTextSync: (text, options) => parseMTL(text, options?.mtl)\n};\n", "import { getMeshBoundingBox } from '@loaders.gl/schema';\nimport { parseOBJMeshes } from \"./parse-obj-meshes.js\";\nimport { getOBJSchema } from \"./get-obj-schema.js\";\nexport function parseOBJ(text, options) {\n    const { meshes } = parseOBJMeshes(text);\n    // @ts-expect-error\n    const vertexCount = meshes.reduce((s, mesh) => s + mesh.header.vertexCount, 0);\n    // TODO - render objects separately\n    const attributes = mergeAttributes(meshes, vertexCount);\n    const header = {\n        vertexCount,\n        // @ts-ignore Need to export Attributes type\n        boundingBox: getMeshBoundingBox(attributes)\n    };\n    const schema = getOBJSchema(attributes, {\n        mode: 4,\n        boundingBox: header.boundingBox\n    });\n    return {\n        // Data return by this loader implementation\n        loaderData: {\n            header: {}\n        },\n        // Normalised data\n        schema,\n        header,\n        mode: 4, // TRIANGLES\n        topology: 'point-list',\n        attributes\n    };\n}\n// eslint-disable-next-line max-statements\nfunction mergeAttributes(meshes, vertexCount) {\n    const positions = new Float32Array(vertexCount * 3);\n    let normals;\n    let colors;\n    let uvs;\n    let i = 0;\n    for (const mesh of meshes) {\n        const { POSITION, NORMAL, COLOR_0, TEXCOORD_0 } = mesh.attributes;\n        positions.set(POSITION.value, i * 3);\n        if (NORMAL) {\n            normals = normals || new Float32Array(vertexCount * 3);\n            normals.set(NORMAL.value, i * 3);\n        }\n        if (COLOR_0) {\n            colors = colors || new Float32Array(vertexCount * 3);\n            colors.set(COLOR_0.value, i * 3);\n        }\n        if (TEXCOORD_0) {\n            uvs = uvs || new Float32Array(vertexCount * 2);\n            uvs.set(TEXCOORD_0.value, i * 2);\n        }\n        i += POSITION.value.length / 3;\n    }\n    const attributes = {};\n    attributes.POSITION = { value: positions, size: 3 };\n    if (normals) {\n        attributes.NORMAL = { value: normals, size: 3 };\n    }\n    if (colors) {\n        attributes.COLOR_0 = { value: colors, size: 3 };\n    }\n    if (uvs) {\n        attributes.TEXCOORD_0 = { value: uvs, size: 2 };\n    }\n    return attributes;\n}\n", "// OBJ Loader, adapted from THREE.js (MIT license)\n//\n// Attributions per original THREE.js source file:\n//\n// @author mrdoob / http://mrdoob.com/\n// @ts-nocheck\n// o object_name | g group_name\nconst OBJECT_RE = /^[og]\\s*(.+)?/;\n// mtllib file_reference\nconst MATERIAL_RE = /^mtllib /;\n// usemtl material_name\nconst MATERIAL_USE_RE = /^usemtl /;\nclass MeshMaterial {\n    constructor({ index, name = '', mtllib, smooth, groupStart }) {\n        this.index = index;\n        this.name = name;\n        this.mtllib = mtllib;\n        this.smooth = smooth;\n        this.groupStart = groupStart;\n        this.groupEnd = -1;\n        this.groupCount = -1;\n        this.inherited = false;\n    }\n    clone(index = this.index) {\n        return new MeshMaterial({\n            index,\n            name: this.name,\n            mtllib: this.mtllib,\n            smooth: this.smooth,\n            groupStart: 0\n        });\n    }\n}\nclass MeshObject {\n    constructor(name = '') {\n        this.name = name;\n        this.geometry = {\n            vertices: [],\n            normals: [],\n            colors: [],\n            uvs: []\n        };\n        this.materials = [];\n        this.smooth = true;\n        this.fromDeclaration = null;\n    }\n    startMaterial(name, libraries) {\n        const previous = this._finalize(false);\n        // New usemtl declaration overwrites an inherited material, except if faces were declared\n        // after the material, then it must be preserved for proper MultiMaterial continuation.\n        if (previous && (previous.inherited || previous.groupCount <= 0)) {\n            this.materials.splice(previous.index, 1);\n        }\n        const material = new MeshMaterial({\n            index: this.materials.length,\n            name,\n            mtllib: Array.isArray(libraries) && libraries.length > 0 ? libraries[libraries.length - 1] : '',\n            smooth: previous !== undefined ? previous.smooth : this.smooth,\n            groupStart: previous !== undefined ? previous.groupEnd : 0\n        });\n        this.materials.push(material);\n        return material;\n    }\n    currentMaterial() {\n        if (this.materials.length > 0) {\n            return this.materials[this.materials.length - 1];\n        }\n        return undefined;\n    }\n    _finalize(end) {\n        const lastMultiMaterial = this.currentMaterial();\n        if (lastMultiMaterial && lastMultiMaterial.groupEnd === -1) {\n            lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;\n            lastMultiMaterial.groupCount = lastMultiMaterial.groupEnd - lastMultiMaterial.groupStart;\n            lastMultiMaterial.inherited = false;\n        }\n        // Ignore objects tail materials if no face declarations followed them before a new o/g started.\n        if (end && this.materials.length > 1) {\n            for (let mi = this.materials.length - 1; mi >= 0; mi--) {\n                if (this.materials[mi].groupCount <= 0) {\n                    this.materials.splice(mi, 1);\n                }\n            }\n        }\n        // Guarantee at least one empty material, this makes the creation later more straight forward.\n        if (end && this.materials.length === 0) {\n            this.materials.push({\n                name: '',\n                smooth: this.smooth\n            });\n        }\n        return lastMultiMaterial;\n    }\n}\nclass ParserState {\n    constructor() {\n        this.objects = [];\n        this.object = null;\n        this.vertices = [];\n        this.normals = [];\n        this.colors = [];\n        this.uvs = [];\n        this.materialLibraries = [];\n        this.startObject('', false);\n    }\n    startObject(name, fromDeclaration = true) {\n        // If the current object (initial from reset) is not from a g/o declaration in the parsed\n        // file. We need to use it for the first parsed g/o to keep things in sync.\n        if (this.object && !this.object.fromDeclaration) {\n            this.object.name = name;\n            this.object.fromDeclaration = fromDeclaration;\n            return;\n        }\n        const previousMaterial = this.object && typeof this.object.currentMaterial === 'function'\n            ? this.object.currentMaterial()\n            : undefined;\n        if (this.object && typeof this.object._finalize === 'function') {\n            this.object._finalize(true);\n        }\n        this.object = new MeshObject(name);\n        this.object.fromDeclaration = fromDeclaration;\n        // Inherit previous objects material.\n        // Spec tells us that a declared material must be set to all objects until a new material is declared.\n        // If a usemtl declaration is encountered while this new object is being parsed, it will\n        // overwrite the inherited material. Exception being that there was already face declarations\n        // to the inherited material, then it will be preserved for proper MultiMaterial continuation.\n        if (previousMaterial && previousMaterial.name && typeof previousMaterial.clone === 'function') {\n            const declared = previousMaterial.clone(0);\n            declared.inherited = true;\n            this.object.materials.push(declared);\n        }\n        this.objects.push(this.object);\n    }\n    finalize() {\n        if (this.object && typeof this.object._finalize === 'function') {\n            this.object._finalize(true);\n        }\n    }\n    parseVertexIndex(value, len) {\n        const index = parseInt(value);\n        return (index >= 0 ? index - 1 : index + len / 3) * 3;\n    }\n    parseNormalIndex(value, len) {\n        const index = parseInt(value);\n        return (index >= 0 ? index - 1 : index + len / 3) * 3;\n    }\n    parseUVIndex(value, len) {\n        const index = parseInt(value);\n        return (index >= 0 ? index - 1 : index + len / 2) * 2;\n    }\n    addVertex(a, b, c) {\n        const src = this.vertices;\n        const dst = this.object.geometry.vertices;\n        dst.push(src[a + 0], src[a + 1], src[a + 2]);\n        dst.push(src[b + 0], src[b + 1], src[b + 2]);\n        dst.push(src[c + 0], src[c + 1], src[c + 2]);\n    }\n    addVertexPoint(a) {\n        const src = this.vertices;\n        const dst = this.object.geometry.vertices;\n        dst.push(src[a + 0], src[a + 1], src[a + 2]);\n    }\n    addVertexLine(a) {\n        const src = this.vertices;\n        const dst = this.object.geometry.vertices;\n        dst.push(src[a + 0], src[a + 1], src[a + 2]);\n    }\n    addNormal(a, b, c) {\n        const src = this.normals;\n        const dst = this.object.geometry.normals;\n        dst.push(src[a + 0], src[a + 1], src[a + 2]);\n        dst.push(src[b + 0], src[b + 1], src[b + 2]);\n        dst.push(src[c + 0], src[c + 1], src[c + 2]);\n    }\n    addColor(a, b, c) {\n        const src = this.colors;\n        const dst = this.object.geometry.colors;\n        dst.push(src[a + 0], src[a + 1], src[a + 2]);\n        dst.push(src[b + 0], src[b + 1], src[b + 2]);\n        dst.push(src[c + 0], src[c + 1], src[c + 2]);\n    }\n    addUV(a, b, c) {\n        const src = this.uvs;\n        const dst = this.object.geometry.uvs;\n        dst.push(src[a + 0], src[a + 1]);\n        dst.push(src[b + 0], src[b + 1]);\n        dst.push(src[c + 0], src[c + 1]);\n    }\n    addUVLine(a) {\n        const src = this.uvs;\n        const dst = this.object.geometry.uvs;\n        dst.push(src[a + 0], src[a + 1]);\n    }\n    // eslint-disable-next-line max-params\n    addFace(a, b, c, ua, ub, uc, na, nb, nc) {\n        const vLen = this.vertices.length;\n        let ia = this.parseVertexIndex(a, vLen);\n        let ib = this.parseVertexIndex(b, vLen);\n        let ic = this.parseVertexIndex(c, vLen);\n        this.addVertex(ia, ib, ic);\n        if (ua !== undefined && ua !== '') {\n            const uvLen = this.uvs.length;\n            ia = this.parseUVIndex(ua, uvLen);\n            ib = this.parseUVIndex(ub, uvLen);\n            ic = this.parseUVIndex(uc, uvLen);\n            this.addUV(ia, ib, ic);\n        }\n        if (na !== undefined && na !== '') {\n            // Normals are many times the same. If so, skip function call and parseInt.\n            const nLen = this.normals.length;\n            ia = this.parseNormalIndex(na, nLen);\n            ib = na === nb ? ia : this.parseNormalIndex(nb, nLen);\n            ic = na === nc ? ia : this.parseNormalIndex(nc, nLen);\n            this.addNormal(ia, ib, ic);\n        }\n        if (this.colors.length > 0) {\n            this.addColor(ia, ib, ic);\n        }\n    }\n    addPointGeometry(vertices) {\n        this.object.geometry.type = 'Points';\n        const vLen = this.vertices.length;\n        for (const vertex of vertices) {\n            this.addVertexPoint(this.parseVertexIndex(vertex, vLen));\n        }\n    }\n    addLineGeometry(vertices, uvs) {\n        this.object.geometry.type = 'Line';\n        const vLen = this.vertices.length;\n        const uvLen = this.uvs.length;\n        for (const vertex of vertices) {\n            this.addVertexLine(this.parseVertexIndex(vertex, vLen));\n        }\n        for (const uv of uvs) {\n            this.addUVLine(this.parseUVIndex(uv, uvLen));\n        }\n    }\n}\n// eslint-disable-next-line max-statements, complexity\nexport function parseOBJMeshes(text) {\n    const state = new ParserState();\n    if (text.indexOf('\\r\\n') !== -1) {\n        // This is faster than String.split with regex that splits on both\n        text = text.replace(/\\r\\n/g, '\\n');\n    }\n    if (text.indexOf('\\\\\\n') !== -1) {\n        // join lines separated by a line continuation character (\\)\n        text = text.replace(/\\\\\\n/g, '');\n    }\n    const lines = text.split('\\n');\n    let line = '';\n    let lineFirstChar = '';\n    let lineLength = 0;\n    let result = [];\n    // Faster to just trim left side of the line. Use if available.\n    const trimLeft = typeof ''.trimLeft === 'function';\n    /* eslint-disable no-continue, max-depth */\n    for (let i = 0, l = lines.length; i < l; i++) {\n        line = lines[i];\n        line = trimLeft ? line.trimLeft() : line.trim();\n        lineLength = line.length;\n        if (lineLength === 0)\n            continue;\n        lineFirstChar = line.charAt(0);\n        // @todo invoke passed in handler if any\n        if (lineFirstChar === '#')\n            continue;\n        if (lineFirstChar === 'v') {\n            const data = line.split(/\\s+/);\n            switch (data[0]) {\n                case 'v':\n                    state.vertices.push(parseFloat(data[1]), parseFloat(data[2]), parseFloat(data[3]));\n                    if (data.length >= 7) {\n                        state.colors.push(parseFloat(data[4]), parseFloat(data[5]), parseFloat(data[6]));\n                    }\n                    break;\n                case 'vn':\n                    state.normals.push(parseFloat(data[1]), parseFloat(data[2]), parseFloat(data[3]));\n                    break;\n                case 'vt':\n                    state.uvs.push(parseFloat(data[1]), parseFloat(data[2]));\n                    break;\n                default:\n            }\n        }\n        else if (lineFirstChar === 'f') {\n            const lineData = line.substr(1).trim();\n            const vertexData = lineData.split(/\\s+/);\n            const faceVertices = [];\n            // Parse the face vertex data into an easy to work with format\n            for (let j = 0, jl = vertexData.length; j < jl; j++) {\n                const vertex = vertexData[j];\n                if (vertex.length > 0) {\n                    const vertexParts = vertex.split('/');\n                    faceVertices.push(vertexParts);\n                }\n            }\n            // Draw an edge between the first vertex and all subsequent vertices to form an n-gon\n            const v1 = faceVertices[0];\n            for (let j = 1, jl = faceVertices.length - 1; j < jl; j++) {\n                const v2 = faceVertices[j];\n                const v3 = faceVertices[j + 1];\n                state.addFace(v1[0], v2[0], v3[0], v1[1], v2[1], v3[1], v1[2], v2[2], v3[2]);\n            }\n        }\n        else if (lineFirstChar === 'l') {\n            const lineParts = line.substring(1).trim().split(' ');\n            let lineVertices;\n            const lineUVs = [];\n            if (line.indexOf('/') === -1) {\n                lineVertices = lineParts;\n            }\n            else {\n                lineVertices = [];\n                for (let li = 0, llen = lineParts.length; li < llen; li++) {\n                    const parts = lineParts[li].split('/');\n                    if (parts[0] !== '')\n                        lineVertices.push(parts[0]);\n                    if (parts[1] !== '')\n                        lineUVs.push(parts[1]);\n                }\n            }\n            state.addLineGeometry(lineVertices, lineUVs);\n        }\n        else if (lineFirstChar === 'p') {\n            const lineData = line.substr(1).trim();\n            const pointData = lineData.split(' ');\n            state.addPointGeometry(pointData);\n        }\n        else if ((result = OBJECT_RE.exec(line)) !== null) {\n            // o object_name\n            // or\n            // g group_name\n            // WORKAROUND: https://bugs.chromium.org/p/v8/issues/detail?id=2869\n            // var name = result[ 0 ].substr( 1 ).trim();\n            const name = (' ' + result[0].substr(1).trim()).substr(1); // eslint-disable-line\n            state.startObject(name);\n        }\n        else if (MATERIAL_USE_RE.test(line)) {\n            // material\n            state.object.startMaterial(line.substring(7).trim(), state.materialLibraries);\n        }\n        else if (MATERIAL_RE.test(line)) {\n            // mtl file\n            state.materialLibraries.push(line.substring(7).trim());\n        }\n        else if (lineFirstChar === 's') {\n            result = line.split(' ');\n            // smooth shading\n            // @todo Handle files that have varying smooth values for a set of faces inside one geometry,\n            // but does not define a usemtl for each face set.\n            // This should be detected and a dummy material created (later MultiMaterial and geometry groups).\n            // This requires some care to not create extra material on each smooth value for \"normal\" obj files.\n            // where explicit usemtl defines geometry groups.\n            // Example asset: examples/models/obj/cerberus/Cerberus.obj\n            /*\n             * http://paulbourke.net/dataformats/obj/\n             * or\n             * http://www.cs.utah.edu/~boulos/cs3505/obj_spec.pdf\n             *\n             * From chapter \"Grouping\" Syntax explanation \"s group_number\":\n             * \"group_number is the smoothing group number. To turn off smoothing groups, use a value of 0 or off.\n             * Polygonal elements use group numbers to put elements in different smoothing groups. For free-form\n             * surfaces, smoothing groups are either turned on or off; there is no difference between values greater\n             * than 0.\"\n             */\n            if (result.length > 1) {\n                const value = result[1].trim().toLowerCase();\n                state.object.smooth = value !== '0' && value !== 'off';\n            }\n            else {\n                // ZBrush can produce \"s\" lines #11707\n                state.object.smooth = true;\n            }\n            const material = state.object.currentMaterial();\n            if (material)\n                material.smooth = state.object.smooth;\n        }\n        else {\n            // Handle null terminated files without exception\n            if (line === '\\0')\n                continue;\n            throw new Error(`Unexpected line: \"${line}\"`);\n        }\n    }\n    state.finalize();\n    const meshes = [];\n    const materials = [];\n    for (const object of state.objects) {\n        const { geometry } = object;\n        // Skip o/g line declarations that did not follow with any faces\n        if (geometry.vertices.length === 0)\n            continue;\n        const mesh = {\n            header: {\n                vertexCount: geometry.vertices.length / 3\n            },\n            attributes: {}\n        };\n        switch (geometry.type) {\n            case 'Points':\n                mesh.mode = 0; // GL.POINTS\n                break;\n            case 'Line':\n                mesh.mode = 1; // GL.LINES\n                break;\n            default:\n                mesh.mode = 4; // GL.TRIANGLES\n                break;\n        }\n        mesh.attributes.POSITION = { value: new Float32Array(geometry.vertices), size: 3 };\n        if (geometry.normals.length > 0) {\n            mesh.attributes.NORMAL = { value: new Float32Array(geometry.normals), size: 3 };\n        }\n        if (geometry.colors.length > 0) {\n            mesh.attributes.COLOR_0 = { value: new Float32Array(geometry.colors), size: 3 };\n        }\n        if (geometry.uvs.length > 0) {\n            mesh.attributes.TEXCOORD_0 = { value: new Float32Array(geometry.uvs), size: 2 };\n        }\n        // Create materials\n        mesh.materials = [];\n        for (const sourceMaterial of object.materials) {\n            // TODO - support full spec\n            const _material = {\n                name: sourceMaterial.name,\n                flatShading: !sourceMaterial.smooth\n            };\n            mesh.materials.push(_material);\n            materials.push(_material);\n        }\n        mesh.name = object.name;\n        meshes.push(mesh);\n    }\n    return { meshes, materials };\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\nimport { getDataTypeFromArray } from '@loaders.gl/schema';\n/** Get Mesh Schema */\nexport function getOBJSchema(attributes, metadata = {}) {\n    const stringMetadata = {};\n    for (const key in metadata) {\n        if (key !== 'value') {\n            stringMetadata[key] = JSON.stringify(metadata[key]);\n        }\n    }\n    const fields = [];\n    for (const attributeName in attributes) {\n        const attribute = attributes[attributeName];\n        const field = getFieldFromAttribute(attributeName, attribute);\n        fields.push(field);\n    }\n    return { fields, metadata: stringMetadata };\n}\n/** Get a Field describing the column from an OBJ attribute */\nfunction getFieldFromAttribute(name, attribute) {\n    const metadata = {};\n    for (const key in attribute) {\n        if (key !== 'value') {\n            metadata[key] = JSON.stringify(attribute[key]);\n        }\n    }\n    let { type } = getDataTypeFromArray(attribute.value);\n    const isSingleValue = attribute.size === 1 || attribute.size === undefined;\n    if (!isSingleValue) {\n        type = { type: 'fixed-size-list', listSize: attribute.size, children: [{ name: 'values', type }] };\n    }\n    return { name, type, nullable: false, metadata };\n}\n", "// __VERSION__ is injected by babel-plugin-version-inline\n// @ts-ignore TS2304: Cannot find name '__VERSION__'.\nconst VERSION = typeof \"4.3.3\" !== 'undefined' ? \"4.3.3\" : 'latest';\n/**\n * Worker loader for the OBJ geometry format\n */\nexport const OBJLoader = {\n    dataType: null,\n    batchType: null,\n    name: 'OBJ',\n    id: 'obj',\n    module: 'obj',\n    version: VERSION,\n    worker: true,\n    extensions: ['obj'],\n    mimeTypes: ['text/plain'],\n    testText: testOBJFile,\n    options: {\n        obj: {}\n    }\n};\nfunction testOBJFile(text) {\n    // TODO - There could be comment line first\n    return text[0] === 'v';\n}\n", "// loaders.gl\n// SPDX-License-Identifier: MIT\n// Copyright (c) vis.gl contributors\n// Forked from THREE.js under MIT license\n// https://github.com/mrdoob/three.js/blob/master/examples/jsm/loaders/MTLLoader.js\nconst DELIMITER_PATTERN = /\\s+/;\n/**\n * Parses a MTL file.\n * Parses a Wavefront .mtl file specifying materials\n * http://paulbourke.net/dataformats/mtl/\n * https://www.loc.gov/preservation/digital/formats/fdd/fdd000508.shtml\n *\n * @param  text - Content of MTL file\n */\n// eslint-disable-next-line complexity\nexport function parseMTL(text, options) {\n    // const materialsInfo: Record<string, MTLMaterial> = {};\n    const materials = [];\n    let currentMaterial = { name: 'placeholder' };\n    const lines = text.split('\\n');\n    for (let line of lines) {\n        line = line.trim();\n        if (line.length === 0 || line.charAt(0) === '#') {\n            // Blank line or comment ignore\n            continue; // eslint-disable-line no-continue\n        }\n        const pos = line.indexOf(' ');\n        let key = pos >= 0 ? line.substring(0, pos) : line;\n        key = key.toLowerCase();\n        let value = pos >= 0 ? line.substring(pos + 1) : '';\n        value = value.trim();\n        switch (key) {\n            case 'newmtl':\n                // New material\n                currentMaterial = { name: value };\n                // insert into map\n                materials.push(currentMaterial);\n                break;\n            case 'ka': // Ka\n                currentMaterial.ambientColor = parseColor(value);\n                break;\n            case 'kd':\n                // Kd: Diffuse color (color under white light) using RGB values\n                currentMaterial.diffuseColor = parseColor(value);\n                break;\n            case 'map_kd':\n                // Diffuse texture map\n                currentMaterial.diffuseTextureUrl = value;\n                //         setMapForType('map', value);\n                break;\n            case 'ks':\n                // Specular color (color when light is reflected from shiny surface) using RGB values\n                currentMaterial.specularColor = parseColor(value);\n                break;\n            case 'map_ks':\n                // Specular map\n                currentMaterial.specularTextureUrl = value;\n                // setMapForType('specularMap', value);\n                break;\n            case 'ke':\n                // Emissive using RGB values\n                currentMaterial.emissiveColor = parseColor(value);\n                break;\n            case 'map_ke':\n                // Emissive map\n                currentMaterial.emissiveTextureUrl = value;\n                // setMapForType('emissiveMap', value);\n                break;\n            case 'ns':\n                // Ns is material specular exponent (defines the focus of the specular highlight)\n                // A high exponent results in a tight, concentrated highlight. 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}