{"version":3,"file":"PLYLoader.cjs","sources":["../../src/loaders/PLYLoader.js"],"sourcesContent":["import { BufferGeometry, FileLoader, Float32BufferAttribute, Loader, LoaderUtils } from 'three'\nimport { decodeText } from '../_polyfill/LoaderUtils'\n\n/**\n * Description: A THREE loader for PLY ASCII files (known as the Polygon\n * File Format or the Stanford Triangle Format).\n *\n * Limitations: ASCII decoding assumes file is UTF-8.\n *\n * Usage:\n *\tconst loader = new PLYLoader();\n *\tloader.load('./models/ply/ascii/dolphins.ply', function (geometry) {\n *\n *\t\tscene.add( new THREE.Mesh( geometry ) );\n *\n *\t} );\n *\n * If the PLY file uses non standard property names, they can be mapped while\n * loading. For example, the following maps the properties\n * “diffuse_(red|green|blue)” in the file to standard color names.\n *\n * loader.setPropertyNameMapping( {\n *\tdiffuse_red: 'red',\n *\tdiffuse_green: 'green',\n *\tdiffuse_blue: 'blue'\n * } );\n *\n */\n\nclass PLYLoader extends Loader {\n  constructor(manager) {\n    super(manager)\n\n    this.propertyNameMapping = {}\n  }\n\n  load(url, onLoad, onProgress, onError) {\n    const scope = this\n\n    const loader = new FileLoader(this.manager)\n    loader.setPath(this.path)\n    loader.setResponseType('arraybuffer')\n    loader.setRequestHeader(this.requestHeader)\n    loader.setWithCredentials(this.withCredentials)\n    loader.load(\n      url,\n      function (text) {\n        try {\n          onLoad(scope.parse(text))\n        } catch (e) {\n          if (onError) {\n            onError(e)\n          } else {\n            console.error(e)\n          }\n\n          scope.manager.itemError(url)\n        }\n      },\n      onProgress,\n      onError,\n    )\n  }\n\n  setPropertyNameMapping(mapping) {\n    this.propertyNameMapping = mapping\n  }\n\n  parse(data) {\n    function parseHeader(data) {\n      const patternHeader = /ply([\\s\\S]*)end_header\\r?\\n/\n      let headerText = ''\n      let headerLength = 0\n      const result = patternHeader.exec(data)\n\n      if (result !== null) {\n        headerText = result[1]\n        headerLength = new Blob([result[0]]).size\n      }\n\n      const header = {\n        comments: [],\n        elements: [],\n        headerLength: headerLength,\n        objInfo: '',\n      }\n\n      const lines = headerText.split('\\n')\n      let currentElement\n\n      function make_ply_element_property(propertValues, propertyNameMapping) {\n        const property = { type: propertValues[0] }\n\n        if (property.type === 'list') {\n          property.name = propertValues[3]\n          property.countType = propertValues[1]\n          property.itemType = propertValues[2]\n        } else {\n          property.name = propertValues[1]\n        }\n\n        if (property.name in propertyNameMapping) {\n          property.name = propertyNameMapping[property.name]\n        }\n\n        return property\n      }\n\n      for (let i = 0; i < lines.length; i++) {\n        let line = lines[i]\n        line = line.trim()\n\n        if (line === '') continue\n\n        const lineValues = line.split(/\\s+/)\n        const lineType = lineValues.shift()\n        line = lineValues.join(' ')\n\n        switch (lineType) {\n          case 'format':\n            header.format = lineValues[0]\n            header.version = lineValues[1]\n\n            break\n\n          case 'comment':\n            header.comments.push(line)\n\n            break\n\n          case 'element':\n            if (currentElement !== undefined) {\n              header.elements.push(currentElement)\n            }\n\n            currentElement = {}\n            currentElement.name = lineValues[0]\n            currentElement.count = parseInt(lineValues[1])\n            currentElement.properties = []\n\n            break\n\n          case 'property':\n            currentElement.properties.push(make_ply_element_property(lineValues, scope.propertyNameMapping))\n\n            break\n\n          case 'obj_info':\n            header.objInfo = line\n\n            break\n\n          default:\n            console.log('unhandled', lineType, lineValues)\n        }\n      }\n\n      if (currentElement !== undefined) {\n        header.elements.push(currentElement)\n      }\n\n      return header\n    }\n\n    function parseASCIINumber(n, type) {\n      switch (type) {\n        case 'char':\n        case 'uchar':\n        case 'short':\n        case 'ushort':\n        case 'int':\n        case 'uint':\n        case 'int8':\n        case 'uint8':\n        case 'int16':\n        case 'uint16':\n        case 'int32':\n        case 'uint32':\n          return parseInt(n)\n\n        case 'float':\n        case 'double':\n        case 'float32':\n        case 'float64':\n          return parseFloat(n)\n      }\n    }\n\n    function parseASCIIElement(properties, line) {\n      const values = line.split(/\\s+/)\n\n      const element = {}\n\n      for (let i = 0; i < properties.length; i++) {\n        if (properties[i].type === 'list') {\n          const list = []\n          const n = parseASCIINumber(values.shift(), properties[i].countType)\n\n          for (let j = 0; j < n; j++) {\n            list.push(parseASCIINumber(values.shift(), properties[i].itemType))\n          }\n\n          element[properties[i].name] = list\n        } else {\n          element[properties[i].name] = parseASCIINumber(values.shift(), properties[i].type)\n        }\n      }\n\n      return element\n    }\n\n    function parseASCII(data, header) {\n      // PLY ascii format specification, as per http://en.wikipedia.org/wiki/PLY_(file_format)\n\n      const buffer = {\n        indices: [],\n        vertices: [],\n        normals: [],\n        uvs: [],\n        faceVertexUvs: [],\n        colors: [],\n      }\n\n      let result\n\n      const patternBody = /end_header\\s([\\s\\S]*)$/\n      let body = ''\n      if ((result = patternBody.exec(data)) !== null) {\n        body = result[1]\n      }\n\n      const lines = body.split('\\n')\n      let currentElement = 0\n      let currentElementCount = 0\n\n      for (let i = 0; i < lines.length; i++) {\n        let line = lines[i]\n        line = line.trim()\n        if (line === '') {\n          continue\n        }\n\n        if (currentElementCount >= header.elements[currentElement].count) {\n          currentElement++\n          currentElementCount = 0\n        }\n\n        const element = parseASCIIElement(header.elements[currentElement].properties, line)\n\n        handleElement(buffer, header.elements[currentElement].name, element)\n\n        currentElementCount++\n      }\n\n      return postProcess(buffer)\n    }\n\n    function postProcess(buffer) {\n      let geometry = new BufferGeometry()\n\n      // mandatory buffer data\n\n      if (buffer.indices.length > 0) {\n        geometry.setIndex(buffer.indices)\n      }\n\n      geometry.setAttribute('position', new Float32BufferAttribute(buffer.vertices, 3))\n\n      // optional buffer data\n\n      if (buffer.normals.length > 0) {\n        geometry.setAttribute('normal', new Float32BufferAttribute(buffer.normals, 3))\n      }\n\n      if (buffer.uvs.length > 0) {\n        geometry.setAttribute('uv', new Float32BufferAttribute(buffer.uvs, 2))\n      }\n\n      if (buffer.colors.length > 0) {\n        geometry.setAttribute('color', new Float32BufferAttribute(buffer.colors, 3))\n      }\n\n      if (buffer.faceVertexUvs.length > 0) {\n        geometry = geometry.toNonIndexed()\n        geometry.setAttribute('uv', new Float32BufferAttribute(buffer.faceVertexUvs, 2))\n      }\n\n      geometry.computeBoundingSphere()\n\n      return geometry\n    }\n\n    function 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buffer.faceVertexUvs.push(texcoord[0], texcoord[1])\n            buffer.faceVertexUvs.push(texcoord[2], texcoord[3])\n            buffer.faceVertexUvs.push(texcoord[4], texcoord[5])\n          }\n        } else if (vertex_indices.length === 4) {\n          buffer.indices.push(vertex_indices[0], vertex_indices[1], vertex_indices[3])\n          buffer.indices.push(vertex_indices[1], vertex_indices[2], vertex_indices[3])\n        }\n      }\n    }\n\n    function binaryRead(dataview, at, type, little_endian) {\n      switch (type) {\n        // corespondences for non-specific length types here match rply:\n        case 'int8':\n        case 'char':\n          return [dataview.getInt8(at), 1]\n        case 'uint8':\n        case 'uchar':\n          return [dataview.getUint8(at), 1]\n        case 'int16':\n        case 'short':\n          return [dataview.getInt16(at, little_endian), 2]\n        case 'uint16':\n        case 'ushort':\n          return [dataview.getUint16(at, little_endian), 2]\n        case 'int32':\n        case 'int':\n          return [dataview.getInt32(at, little_endian), 4]\n        case 'uint32':\n        case 'uint':\n          return [dataview.getUint32(at, little_endian), 4]\n        case 'float32':\n        case 'float':\n          return [dataview.getFloat32(at, little_endian), 4]\n        case 'float64':\n        case 'double':\n          return [dataview.getFloat64(at, little_endian), 8]\n      }\n    }\n\n    function binaryReadElement(dataview, at, properties, little_endian) {\n      const element = {}\n      let result,\n        read = 0\n\n      for (let i = 0; i < properties.length; i++) {\n        if (properties[i].type === 'list') {\n          const list = []\n\n          result = binaryRead(dataview, at + read, properties[i].countType, little_endian)\n          const n = result[0]\n          read += result[1]\n\n          for (let j = 0; j < n; j++) {\n            result = binaryRead(dataview, at + read, properties[i].itemType, little_endian)\n            list.push(result[0])\n            read += result[1]\n          }\n\n          element[properties[i].name] = list\n        } else {\n          result = binaryRead(dataview, at + read, properties[i].type, little_endian)\n          element[properties[i].name] = result[0]\n          read += result[1]\n        }\n      }\n\n      return [element, read]\n    }\n\n    function parseBinary(data, header) {\n      const buffer = {\n        indices: [],\n        vertices: [],\n        normals: [],\n        uvs: [],\n        faceVertexUvs: [],\n        colors: [],\n      }\n\n      const little_endian = header.format === 'binary_little_endian'\n      const body = new DataView(data, header.headerLength)\n      let result,\n        loc = 0\n\n      for (let currentElement = 0; currentElement < header.elements.length; currentElement++) {\n        for (\n          let currentElementCount = 0;\n          currentElementCount < header.elements[currentElement].count;\n          currentElementCount++\n        ) {\n          result = binaryReadElement(body, loc, header.elements[currentElement].properties, little_endian)\n          loc += result[1]\n          const element = result[0]\n\n          handleElement(buffer, header.elements[currentElement].name, element)\n        }\n      }\n\n      return postProcess(buffer)\n    }\n\n    //\n\n    let geometry\n    const scope = this\n\n    if (data instanceof ArrayBuffer) {\n      const text = decodeText(new Uint8Array(data))\n      const header = parseHeader(text)\n\n      geometry = header.format === 'ascii' ? parseASCII(text, header) : parseBinary(data, header)\n    } else {\n      geometry = parseASCII(data, parseHeader(data))\n    }\n\n    return geometry\n  }\n}\n\nexport { PLYLoader 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