You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
530 lines
11 KiB
530 lines
11 KiB
import {
|
|
BufferGeometry,
|
|
FileLoader,
|
|
Float32BufferAttribute,
|
|
Loader,
|
|
LoaderUtils
|
|
} from '../../../build/three.module.js';
|
|
|
|
/**
|
|
* Description: A THREE loader for PLY ASCII files (known as the Polygon
|
|
* File Format or the Stanford Triangle Format).
|
|
*
|
|
* Limitations: ASCII decoding assumes file is UTF-8.
|
|
*
|
|
* Usage:
|
|
* const loader = new PLYLoader();
|
|
* loader.load('./models/ply/ascii/dolphins.ply', function (geometry) {
|
|
*
|
|
* scene.add( new THREE.Mesh( geometry ) );
|
|
*
|
|
* } );
|
|
*
|
|
* If the PLY file uses non standard property names, they can be mapped while
|
|
* loading. For example, the following maps the properties
|
|
* “diffuse_(red|green|blue)” in the file to standard color names.
|
|
*
|
|
* loader.setPropertyNameMapping( {
|
|
* diffuse_red: 'red',
|
|
* diffuse_green: 'green',
|
|
* diffuse_blue: 'blue'
|
|
* } );
|
|
*
|
|
*/
|
|
|
|
|
|
class PLYLoader extends Loader {
|
|
|
|
constructor( manager ) {
|
|
|
|
super( manager );
|
|
|
|
this.propertyNameMapping = {};
|
|
|
|
}
|
|
|
|
load( url, onLoad, onProgress, onError ) {
|
|
|
|
const scope = this;
|
|
|
|
const loader = new FileLoader( this.manager );
|
|
loader.setPath( this.path );
|
|
loader.setResponseType( 'arraybuffer' );
|
|
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 );
|
|
|
|
}
|
|
|
|
setPropertyNameMapping( mapping ) {
|
|
|
|
this.propertyNameMapping = mapping;
|
|
|
|
}
|
|
|
|
parse( data ) {
|
|
|
|
function parseHeader( data ) {
|
|
|
|
const patternHeader = /ply([\s\S]*)end_header\r?\n/;
|
|
let headerText = '';
|
|
let headerLength = 0;
|
|
const result = patternHeader.exec( data );
|
|
|
|
if ( result !== null ) {
|
|
|
|
headerText = result[ 1 ];
|
|
headerLength = new Blob( [ result[ 0 ] ] ).size;
|
|
|
|
}
|
|
|
|
const header = {
|
|
comments: [],
|
|
elements: [],
|
|
headerLength: headerLength,
|
|
objInfo: ''
|
|
};
|
|
|
|
const lines = headerText.split( '\n' );
|
|
let currentElement;
|
|
|
|
function make_ply_element_property( propertValues, propertyNameMapping ) {
|
|
|
|
const property = { type: propertValues[ 0 ] };
|
|
|
|
if ( property.type === 'list' ) {
|
|
|
|
property.name = propertValues[ 3 ];
|
|
property.countType = propertValues[ 1 ];
|
|
property.itemType = propertValues[ 2 ];
|
|
|
|
} else {
|
|
|
|
property.name = propertValues[ 1 ];
|
|
|
|
}
|
|
|
|
if ( property.name in propertyNameMapping ) {
|
|
|
|
property.name = propertyNameMapping[ property.name ];
|
|
|
|
}
|
|
|
|
return property;
|
|
|
|
}
|
|
|
|
for ( let i = 0; i < lines.length; i ++ ) {
|
|
|
|
let line = lines[ i ];
|
|
line = line.trim();
|
|
|
|
if ( line === '' ) continue;
|
|
|
|
const lineValues = line.split( /\s+/ );
|
|
const lineType = lineValues.shift();
|
|
line = lineValues.join( ' ' );
|
|
|
|
switch ( lineType ) {
|
|
|
|
case 'format':
|
|
|
|
header.format = lineValues[ 0 ];
|
|
header.version = lineValues[ 1 ];
|
|
|
|
break;
|
|
|
|
case 'comment':
|
|
|
|
header.comments.push( line );
|
|
|
|
break;
|
|
|
|
case 'element':
|
|
|
|
if ( currentElement !== undefined ) {
|
|
|
|
header.elements.push( currentElement );
|
|
|
|
}
|
|
|
|
currentElement = {};
|
|
currentElement.name = lineValues[ 0 ];
|
|
currentElement.count = parseInt( lineValues[ 1 ] );
|
|
currentElement.properties = [];
|
|
|
|
break;
|
|
|
|
case 'property':
|
|
|
|
currentElement.properties.push( make_ply_element_property( lineValues, scope.propertyNameMapping ) );
|
|
|
|
break;
|
|
|
|
case 'obj_info':
|
|
|
|
header.objInfo = line;
|
|
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
console.log( 'unhandled', lineType, lineValues );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( currentElement !== undefined ) {
|
|
|
|
header.elements.push( currentElement );
|
|
|
|
}
|
|
|
|
return header;
|
|
|
|
}
|
|
|
|
function parseASCIINumber( n, type ) {
|
|
|
|
switch ( type ) {
|
|
|
|
case 'char': case 'uchar': case 'short': case 'ushort': case 'int': case 'uint':
|
|
case 'int8': case 'uint8': case 'int16': case 'uint16': case 'int32': case 'uint32':
|
|
|
|
return parseInt( n );
|
|
|
|
case 'float': case 'double': case 'float32': case 'float64':
|
|
|
|
return parseFloat( n );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function parseASCIIElement( properties, line ) {
|
|
|
|
const values = line.split( /\s+/ );
|
|
|
|
const element = {};
|
|
|
|
for ( let i = 0; i < properties.length; i ++ ) {
|
|
|
|
if ( properties[ i ].type === 'list' ) {
|
|
|
|
const list = [];
|
|
const n = parseASCIINumber( values.shift(), properties[ i ].countType );
|
|
|
|
for ( let j = 0; j < n; j ++ ) {
|
|
|
|
list.push( parseASCIINumber( values.shift(), properties[ i ].itemType ) );
|
|
|
|
}
|
|
|
|
element[ properties[ i ].name ] = list;
|
|
|
|
} else {
|
|
|
|
element[ properties[ i ].name ] = parseASCIINumber( values.shift(), properties[ i ].type );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return element;
|
|
|
|
}
|
|
|
|
function parseASCII( data, header ) {
|
|
|
|
// PLY ascii format specification, as per http://en.wikipedia.org/wiki/PLY_(file_format)
|
|
|
|
const buffer = {
|
|
indices: [],
|
|
vertices: [],
|
|
normals: [],
|
|
uvs: [],
|
|
faceVertexUvs: [],
|
|
colors: []
|
|
};
|
|
|
|
let result;
|
|
|
|
const patternBody = /end_header\s([\s\S]*)$/;
|
|
let body = '';
|
|
if ( ( result = patternBody.exec( data ) ) !== null ) {
|
|
|
|
body = result[ 1 ];
|
|
|
|
}
|
|
|
|
const lines = body.split( '\n' );
|
|
let currentElement = 0;
|
|
let currentElementCount = 0;
|
|
|
|
for ( let i = 0; i < lines.length; i ++ ) {
|
|
|
|
let line = lines[ i ];
|
|
line = line.trim();
|
|
if ( line === '' ) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if ( currentElementCount >= header.elements[ currentElement ].count ) {
|
|
|
|
currentElement ++;
|
|
currentElementCount = 0;
|
|
|
|
}
|
|
|
|
const element = parseASCIIElement( header.elements[ currentElement ].properties, line );
|
|
|
|
handleElement( buffer, header.elements[ currentElement ].name, element );
|
|
|
|
currentElementCount ++;
|
|
|
|
}
|
|
|
|
return postProcess( buffer );
|
|
|
|
}
|
|
|
|
function postProcess( buffer ) {
|
|
|
|
let geometry = new BufferGeometry();
|
|
|
|
// mandatory buffer data
|
|
|
|
if ( buffer.indices.length > 0 ) {
|
|
|
|
geometry.setIndex( buffer.indices );
|
|
|
|
}
|
|
|
|
geometry.setAttribute( 'position', new Float32BufferAttribute( buffer.vertices, 3 ) );
|
|
|
|
// optional buffer data
|
|
|
|
if ( buffer.normals.length > 0 ) {
|
|
|
|
geometry.setAttribute( 'normal', new Float32BufferAttribute( buffer.normals, 3 ) );
|
|
|
|
}
|
|
|
|
if ( buffer.uvs.length > 0 ) {
|
|
|
|
geometry.setAttribute( 'uv', new Float32BufferAttribute( buffer.uvs, 2 ) );
|
|
|
|
}
|
|
|
|
if ( buffer.colors.length > 0 ) {
|
|
|
|
geometry.setAttribute( 'color', new Float32BufferAttribute( buffer.colors, 3 ) );
|
|
|
|
}
|
|
|
|
if ( buffer.faceVertexUvs.length > 0 ) {
|
|
|
|
geometry = geometry.toNonIndexed();
|
|
geometry.setAttribute( 'uv', new Float32BufferAttribute( buffer.faceVertexUvs, 2 ) );
|
|
|
|
}
|
|
|
|
geometry.computeBoundingSphere();
|
|
|
|
return geometry;
|
|
|
|
}
|
|
|
|
function handleElement( buffer, elementName, element ) {
|
|
|
|
if ( elementName === 'vertex' ) {
|
|
|
|
buffer.vertices.push( element.x, element.y, element.z );
|
|
|
|
if ( 'nx' in element && 'ny' in element && 'nz' in element ) {
|
|
|
|
buffer.normals.push( element.nx, element.ny, element.nz );
|
|
|
|
}
|
|
|
|
if ( 's' in element && 't' in element ) {
|
|
|
|
buffer.uvs.push( element.s, element.t );
|
|
|
|
}
|
|
|
|
if ( 'red' in element && 'green' in element && 'blue' in element ) {
|
|
|
|
buffer.colors.push( element.red / 255.0, element.green / 255.0, element.blue / 255.0 );
|
|
|
|
}
|
|
|
|
} else if ( elementName === 'face' ) {
|
|
|
|
const vertex_indices = element.vertex_indices || element.vertex_index; // issue #9338
|
|
const texcoord = element.texcoord;
|
|
|
|
if ( vertex_indices.length === 3 ) {
|
|
|
|
buffer.indices.push( vertex_indices[ 0 ], vertex_indices[ 1 ], vertex_indices[ 2 ] );
|
|
|
|
if ( texcoord && texcoord.length === 6 ) {
|
|
|
|
buffer.faceVertexUvs.push( texcoord[ 0 ], texcoord[ 1 ] );
|
|
buffer.faceVertexUvs.push( texcoord[ 2 ], texcoord[ 3 ] );
|
|
buffer.faceVertexUvs.push( texcoord[ 4 ], texcoord[ 5 ] );
|
|
|
|
}
|
|
|
|
} else if ( vertex_indices.length === 4 ) {
|
|
|
|
buffer.indices.push( vertex_indices[ 0 ], vertex_indices[ 1 ], vertex_indices[ 3 ] );
|
|
buffer.indices.push( vertex_indices[ 1 ], vertex_indices[ 2 ], vertex_indices[ 3 ] );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function binaryRead( dataview, at, type, little_endian ) {
|
|
|
|
switch ( type ) {
|
|
|
|
// corespondences for non-specific length types here match rply:
|
|
case 'int8': case 'char': return [ dataview.getInt8( at ), 1 ];
|
|
case 'uint8': case 'uchar': return [ dataview.getUint8( at ), 1 ];
|
|
case 'int16': case 'short': return [ dataview.getInt16( at, little_endian ), 2 ];
|
|
case 'uint16': case 'ushort': return [ dataview.getUint16( at, little_endian ), 2 ];
|
|
case 'int32': case 'int': return [ dataview.getInt32( at, little_endian ), 4 ];
|
|
case 'uint32': case 'uint': return [ dataview.getUint32( at, little_endian ), 4 ];
|
|
case 'float32': case 'float': return [ dataview.getFloat32( at, little_endian ), 4 ];
|
|
case 'float64': case 'double': return [ dataview.getFloat64( at, little_endian ), 8 ];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function binaryReadElement( dataview, at, properties, little_endian ) {
|
|
|
|
const element = {};
|
|
let result, read = 0;
|
|
|
|
for ( let i = 0; i < properties.length; i ++ ) {
|
|
|
|
if ( properties[ i ].type === 'list' ) {
|
|
|
|
const list = [];
|
|
|
|
result = binaryRead( dataview, at + read, properties[ i ].countType, little_endian );
|
|
const n = result[ 0 ];
|
|
read += result[ 1 ];
|
|
|
|
for ( let j = 0; j < n; j ++ ) {
|
|
|
|
result = binaryRead( dataview, at + read, properties[ i ].itemType, little_endian );
|
|
list.push( result[ 0 ] );
|
|
read += result[ 1 ];
|
|
|
|
}
|
|
|
|
element[ properties[ i ].name ] = list;
|
|
|
|
} else {
|
|
|
|
result = binaryRead( dataview, at + read, properties[ i ].type, little_endian );
|
|
element[ properties[ i ].name ] = result[ 0 ];
|
|
read += result[ 1 ];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return [ element, read ];
|
|
|
|
}
|
|
|
|
function parseBinary( data, header ) {
|
|
|
|
const buffer = {
|
|
indices: [],
|
|
vertices: [],
|
|
normals: [],
|
|
uvs: [],
|
|
faceVertexUvs: [],
|
|
colors: []
|
|
};
|
|
|
|
const little_endian = ( header.format === 'binary_little_endian' );
|
|
const body = new DataView( data, header.headerLength );
|
|
let result, loc = 0;
|
|
|
|
for ( let currentElement = 0; currentElement < header.elements.length; currentElement ++ ) {
|
|
|
|
for ( let currentElementCount = 0; currentElementCount < header.elements[ currentElement ].count; currentElementCount ++ ) {
|
|
|
|
result = binaryReadElement( body, loc, header.elements[ currentElement ].properties, little_endian );
|
|
loc += result[ 1 ];
|
|
const element = result[ 0 ];
|
|
|
|
handleElement( buffer, header.elements[ currentElement ].name, element );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return postProcess( buffer );
|
|
|
|
}
|
|
|
|
//
|
|
|
|
let geometry;
|
|
const scope = this;
|
|
|
|
if ( data instanceof ArrayBuffer ) {
|
|
|
|
const text = LoaderUtils.decodeText( new Uint8Array( data ) );
|
|
const header = parseHeader( text );
|
|
|
|
geometry = header.format === 'ascii' ? parseASCII( text, header ) : parseBinary( data, header );
|
|
|
|
} else {
|
|
|
|
geometry = parseASCII( data, parseHeader( data ) );
|
|
|
|
}
|
|
|
|
return geometry;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
export { PLYLoader };
|