ShadowEditor/js/loaders/PCDLoader.js
2018-06-07 19:50:07 +08:00

251 lines
7.0 KiB
JavaScript

/**
* @author Filipe Caixeta / http://filipecaixeta.com.br
*
* Description: A THREE loader for PCD ascii and binary files.
*
* Limitations: Compressed binary files are not supported.
*
*/
THREE.PCDLoader = function ( manager ) {
this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
this.littleEndian = true;
};
THREE.PCDLoader.prototype = {
constructor: THREE.PCDLoader,
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var loader = new THREE.FileLoader( scope.manager );
loader.setResponseType( 'arraybuffer' );
loader.load( url, function ( data ) {
onLoad( scope.parse( data, url ) );
}, onProgress, onError );
},
binarryToStr: function ( data ) {
var text = "";
var charArray = new Uint8Array( data );
for ( var i = 0; i < data.byteLength; i ++ ) {
text += String.fromCharCode( charArray[ i ] );
}
return text;
},
parseHeader: function ( data ) {
var PCDheader = {};
var result1 = data.search( /[\r\n]DATA\s(\S*)\s/i );
var result2 = /[\r\n]DATA\s(\S*)\s/i.exec( data.substr( result1 - 1 ) );
PCDheader.data = result2[ 1 ];
PCDheader.headerLen = result2[ 0 ].length + result1;
PCDheader.str = data.substr( 0, PCDheader.headerLen );
// Remove comments
PCDheader.str = PCDheader.str.replace( /\#.*/gi, "" );
PCDheader.version = /VERSION (.*)/i.exec( PCDheader.str );
if ( PCDheader.version != null )
PCDheader.version = parseFloat( PCDheader.version[ 1 ] );
PCDheader.fields = /FIELDS (.*)/i.exec( PCDheader.str );
if ( PCDheader.fields != null )
PCDheader.fields = PCDheader.fields[ 1 ].split( " " );
PCDheader.size = /SIZE (.*)/i.exec( PCDheader.str );
if ( PCDheader.size != null )
PCDheader.size = PCDheader.size[ 1 ].split( " " ).map( function ( x ) {
return parseInt( x, 10 );
} );
PCDheader.type = /TYPE (.*)/i.exec( PCDheader.str );
if ( PCDheader.type != null )
PCDheader.type = PCDheader.type[ 1 ].split( " " );
PCDheader.count = /COUNT (.*)/i.exec( PCDheader.str );
if ( PCDheader.count != null )
PCDheader.count = PCDheader.count[ 1 ].split( " " ).map( function ( x ) {
return parseInt( x, 10 );
} );
PCDheader.width = /WIDTH (.*)/i.exec( PCDheader.str );
if ( PCDheader.width != null )
PCDheader.width = parseInt( PCDheader.width[ 1 ] );
PCDheader.height = /HEIGHT (.*)/i.exec( PCDheader.str );
if ( PCDheader.height != null )
PCDheader.height = parseInt( PCDheader.height[ 1 ] );
PCDheader.viewpoint = /VIEWPOINT (.*)/i.exec( PCDheader.str );
if ( PCDheader.viewpoint != null )
PCDheader.viewpoint = PCDheader.viewpoint[ 1 ];
PCDheader.points = /POINTS (.*)/i.exec( PCDheader.str );
if ( PCDheader.points != null )
PCDheader.points = parseInt( PCDheader.points[ 1 ], 10 );
if ( PCDheader.points == null )
PCDheader.points = PCDheader.width * PCDheader.height;
if ( PCDheader.count == null ) {
PCDheader.count = [];
for ( var i = 0; i < PCDheader.fields; i ++ )
PCDheader.count.push( 1 );
}
PCDheader.offset = {};
var sizeSum = 0;
for ( var i = 0; i < PCDheader.fields.length; i ++ ) {
if ( PCDheader.data == "ascii" ) {
PCDheader.offset[ PCDheader.fields[ i ] ] = i;
} else {
PCDheader.offset[ PCDheader.fields[ i ] ] = sizeSum;
sizeSum += PCDheader.size[ i ];
}
}
// For binary only
PCDheader.rowSize = sizeSum;
return PCDheader;
},
parse: function ( data, url ) {
var textData = this.binarryToStr( data );
// Parse the header
// Header is always ascii format
var PCDheader = this.parseHeader( textData );
// Parse the data
var position = false;
if ( PCDheader.offset.x != undefined )
position = new Float32Array( PCDheader.points * 3 );
var color = false;
if ( PCDheader.offset.rgb != undefined )
color = new Float32Array( PCDheader.points * 3 );
var normal = false;
if ( PCDheader.offset.normal_x != undefined )
normal = new Float32Array( PCDheader.points * 3 );
if ( PCDheader.data == "ascii" ) {
var offset = PCDheader.offset;
var pcdData = textData.substr( PCDheader.headerLen );
var lines = pcdData.split( '\n' );
var i3 = 0;
for ( var i = 0; i < lines.length; i ++, i3 += 3 ) {
var line = lines[ i ].split( " " );
if ( offset.x != undefined ) {
position[ i3 + 0 ] = parseFloat( line[ offset.x ] );
position[ i3 + 1 ] = parseFloat( line[ offset.y ] );
position[ i3 + 2 ] = parseFloat( line[ offset.z ] );
}
if ( offset.rgb != undefined ) {
var c = new Float32Array( [ parseFloat( line[ offset.rgb ] ) ] );
var dataview = new DataView( c.buffer, 0 );
color[ i3 + 0 ] = dataview.getUint8( 0 ) / 255.0;
color[ i3 + 1 ] = dataview.getUint8( 1 ) / 255.0;
color[ i3 + 2 ] = dataview.getUint8( 2 ) / 255.0;
}
if ( offset.normal_x != undefined ) {
normal[ i3 + 0 ] = parseFloat( line[ offset.normal_x ] );
normal[ i3 + 1 ] = parseFloat( line[ offset.normal_y ] );
normal[ i3 + 2 ] = parseFloat( line[ offset.normal_z ] );
}
}
}
if ( PCDheader.data == "binary_compressed" ) {
console.error( 'THREE.PCDLoader: binary_compressed files are not supported' );
return;
}
if ( PCDheader.data == "binary" ) {
var row = 0;
var dataview = new DataView( data, PCDheader.headerLen );
var i = 0;
var offset = PCDheader.offset;
for ( var i3 = 0; i < PCDheader.points; i3 += 3, row += PCDheader.rowSize, i ++ ) {
if ( offset.x != undefined ) {
position[ i3 + 0 ] = dataview.getFloat32( row + offset.x, this.littleEndian );
position[ i3 + 1 ] = dataview.getFloat32( row + offset.y, this.littleEndian );
position[ i3 + 2 ] = dataview.getFloat32( row + offset.z, this.littleEndian );
}
if ( offset.rgb != undefined ) {
color[ i3 + 0 ] = dataview.getUint8( row + offset.rgb + 0 ) / 255.0;
color[ i3 + 1 ] = dataview.getUint8( row + offset.rgb + 1 ) / 255.0;
color[ i3 + 2 ] = dataview.getUint8( row + offset.rgb + 2 ) / 255.0;
}
if ( offset.normal_x != undefined ) {
normal[ i3 + 0 ] = dataview.getFloat32( row + offset.normal_x, this.littleEndian );
normal[ i3 + 1 ] = dataview.getFloat32( row + offset.normal_y, this.littleEndian );
normal[ i3 + 2 ] = dataview.getFloat32( row + offset.normal_z, this.littleEndian );
}
}
}
var geometry = new THREE.BufferGeometry();
if ( position != false )
geometry.addAttribute( 'position', new THREE.BufferAttribute( position, 3 ) );
if ( color != false )
geometry.addAttribute( 'color', new THREE.BufferAttribute( color, 3 ) );
if ( normal != false )
geometry.addAttribute( 'normal', new THREE.BufferAttribute( normal, 3 ) );
geometry.computeBoundingSphere();
var material = new THREE.PointsMaterial( { size: 0.005, vertexColors: ! ( color == false ) } );
if ( color == false )
material.color.setHex( Math.random() * 0xffffff );
var mesh = new THREE.Points( geometry, material );
var name = url.split( '' ).reverse().join( '' );
name = /([^\/]*)/.exec( name );
name = name[ 1 ].split( '' ).reverse().join( '' );
mesh.name = name;
mesh.PCDheader = PCDheader;
return mesh;
}
};