/**
* @author Mugen87 / https://github.com/Mugen87
*/
import {
BackSide,
BoxBufferGeometry,
BufferAttribute,
BufferGeometry,
ClampToEdgeWrapping,
Color,
ConeBufferGeometry,
CylinderBufferGeometry,
DataTexture,
DoubleSide,
FileLoader,
Float32BufferAttribute,
FrontSide,
Group,
LineBasicMaterial,
LineSegments,
Loader,
LoaderUtils,
Mesh,
MeshBasicMaterial,
MeshPhongMaterial,
Object3D,
Points,
PointsMaterial,
RGBAFormat,
RGBFormat,
RepeatWrapping,
Scene,
SphereBufferGeometry,
TextureLoader,
Vector2,
Vector3,
VertexColors
} from "../../../build/three.module.js";
import { chevrotain } from "../libs/chevrotain.module.min.js";
/* global chevrotain */
var VRMLLoader = ( function () {
// dependency check
if ( typeof chevrotain === 'undefined' ) {
throw Error( 'THREE.VRMLLoader: External library chevrotain.min.js required.' );
}
// class definitions
function VRMLLoader( manager ) {
Loader.call( this, manager );
}
VRMLLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
constructor: VRMLLoader,
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var path = ( scope.path === '' ) ? LoaderUtils.extractUrlBase( url ) : scope.path;
var loader = new FileLoader( this.manager );
loader.setPath( scope.path );
loader.load( url, function ( text ) {
onLoad( scope.parse( text, path ) );
}, onProgress, onError );
},
parse: function ( data, path ) {
var nodeMap = {};
function generateVRMLTree( data ) {
// create lexer, parser and visitor
var tokenData = createTokens();
var lexer = new VRMLLexer( tokenData.tokens );
var parser = new VRMLParser( tokenData.tokenVocabulary );
var visitor = createVisitor( parser.getBaseCstVisitorConstructor() );
// lexing
var lexingResult = lexer.lex( data );
parser.input = lexingResult.tokens;
// parsing
var cstOutput = parser.vrml();
if ( parser.errors.length > 0 ) {
console.error( parser.errors );
throw Error( 'THREE.VRMLLoader: Parsing errors detected.' );
}
// actions
var ast = visitor.visit( cstOutput );
return ast;
}
function createTokens() {
var createToken = chevrotain.createToken;
// from http://gun.teipir.gr/VRML-amgem/spec/part1/concepts.html#SyntaxBasics
var RouteIdentifier = createToken( { name: 'RouteIdentifier', pattern: /[^\x30-\x39\0-\x20\x22\x27\x23\x2b\x2c\x2d\x2e\x5b\x5d\x5c\x7b\x7d][^\0-\x20\x22\x27\x23\x2b\x2c\x2d\x2e\x5b\x5d\x5c\x7b\x7d]*[\.][^\x30-\x39\0-\x20\x22\x27\x23\x2b\x2c\x2d\x2e\x5b\x5d\x5c\x7b\x7d][^\0-\x20\x22\x27\x23\x2b\x2c\x2d\x2e\x5b\x5d\x5c\x7b\x7d]*/ } );
var Identifier = createToken( { name: 'Identifier', pattern: /[^\x30-\x39\0-\x20\x22\x27\x23\x2b\x2c\x2d\x2e\x5b\x5d\x5c\x7b\x7d][^\0-\x20\x22\x27\x23\x2b\x2c\x2d\x2e\x5b\x5d\x5c\x7b\x7d]*/, longer_alt: RouteIdentifier } );
// from http://gun.teipir.gr/VRML-amgem/spec/part1/nodesRef.html
var nodeTypes = [
'Anchor', 'Billboard', 'Collision', 'Group', 'Transform', // grouping nodes
'Inline', 'LOD', 'Switch', // special groups
'AudioClip', 'DirectionalLight', 'PointLight', 'Script', 'Shape', 'Sound', 'SpotLight', 'WorldInfo', // common nodes
'CylinderSensor', 'PlaneSensor', 'ProximitySensor', 'SphereSensor', 'TimeSensor', 'TouchSensor', 'VisibilitySensor', // sensors
'Box', 'Cone', 'Cylinder', 'ElevationGrid', 'Extrusion', 'IndexedFaceSet', 'IndexedLineSet', 'PointSet', 'Sphere', // geometries
'Color', 'Coordinate', 'Normal', 'TextureCoordinate', // geometric properties
'Appearance', 'FontStyle', 'ImageTexture', 'Material', 'MovieTexture', 'PixelTexture', 'TextureTransform', // appearance
'ColorInterpolator', 'CoordinateInterpolator', 'NormalInterpolator', 'OrientationInterpolator', 'PositionInterpolator', 'ScalarInterpolator', // interpolators
'Background', 'Fog', 'NavigationInfo', 'Viewpoint', // bindable nodes
'Text' // Text must be placed at the end of the regex so there are no matches for TextureTransform and TextureCoordinate
];
//
var Version = createToken( {
name: 'Version',
pattern: /#VRML.*/,
longer_alt: Identifier
} );
var NodeName = createToken( {
name: 'NodeName',
pattern: new RegExp( nodeTypes.join( '|' ) ),
longer_alt: Identifier
} );
var DEF = createToken( {
name: 'DEF',
pattern: /DEF/,
longer_alt: Identifier
} );
var USE = createToken( {
name: 'USE',
pattern: /USE/,
longer_alt: Identifier
} );
var ROUTE = createToken( {
name: 'ROUTE',
pattern: /ROUTE/,
longer_alt: Identifier
} );
var TO = createToken( {
name: 'TO',
pattern: /TO/,
longer_alt: Identifier
} );
//
var StringLiteral = createToken( { name: "StringLiteral", pattern: /"(:?[^\\"\n\r]+|\\(:?[bfnrtv"\\/]|u[0-9a-fA-F]{4}))*"/ } );
var HexLiteral = createToken( { name: 'HexLiteral', pattern: /0[xX][0-9a-fA-F]+/ } );
var NumberLiteral = createToken( { name: 'NumberLiteral', pattern: /[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?/ } );
var TrueLiteral = createToken( { name: 'TrueLiteral', pattern: /TRUE/ } );
var FalseLiteral = createToken( { name: 'FalseLiteral', pattern: /FALSE/ } );
var NullLiteral = createToken( { name: 'NullLiteral', pattern: /NULL/ } );
var LSquare = createToken( { name: 'LSquare', pattern: /\[/ } );
var RSquare = createToken( { name: 'RSquare', pattern: /]/ } );
var LCurly = createToken( { name: 'LCurly', pattern: /{/ } );
var RCurly = createToken( { name: 'RCurly', pattern: /}/ } );
var Comment = createToken( {
name: 'Comment',
pattern: /#.*/,
group: chevrotain.Lexer.SKIPPED
} );
// commas, blanks, tabs, newlines and carriage returns are whitespace characters wherever they appear outside of string fields
var WhiteSpace = createToken( {
name: 'WhiteSpace',
pattern: /[ ,\s]/,
group: chevrotain.Lexer.SKIPPED
} );
var tokens = [
WhiteSpace,
// keywords appear before the Identifier
NodeName,
DEF,
USE,
ROUTE,
TO,
TrueLiteral,
FalseLiteral,
NullLiteral,
// the Identifier must appear after the keywords because all keywords are valid identifiers
Version,
Identifier,
RouteIdentifier,
StringLiteral,
HexLiteral,
NumberLiteral,
LSquare,
RSquare,
LCurly,
RCurly,
Comment
];
var tokenVocabulary = {};
for ( var i = 0, l = tokens.length; i < l; i ++ ) {
var token = tokens[ i ];
tokenVocabulary[ token.name ] = token;
}
return { tokens: tokens, tokenVocabulary: tokenVocabulary };
}
function createVisitor( BaseVRMLVisitor ) {
// the visitor is created dynmaically based on the given base class
function VRMLToASTVisitor() {
BaseVRMLVisitor.call( this );
this.validateVisitor();
}
VRMLToASTVisitor.prototype = Object.assign( Object.create( BaseVRMLVisitor.prototype ), {
constructor: VRMLToASTVisitor,
vrml: function ( ctx ) {
var data = {
version: this.visit( ctx.version ),
nodes: [],
routes: []
};
for ( var i = 0, l = ctx.node.length; i < l; i ++ ) {
var node = ctx.node[ i ];
data.nodes.push( this.visit( node ) );
}
if ( ctx.route ) {
for ( var i = 0, l = ctx.route.length; i < l; i ++ ) {
var route = ctx.route[ i ];
data.routes.push( this.visit( route ) );
}
}
return data;
},
version: function ( ctx ) {
return ctx.Version[ 0 ].image;
},
node: function ( ctx ) {
var data = {
name: ctx.NodeName[ 0 ].image,
fields: []
};
if ( ctx.field ) {
for ( var i = 0, l = ctx.field.length; i < l; i ++ ) {
var field = ctx.field[ i ];
data.fields.push( this.visit( field ) );
}
}
// DEF
if ( ctx.def ) {
data.DEF = this.visit( ctx.def[ 0 ] );
}
return data;
},
field: function ( ctx ) {
var data = {
name: ctx.Identifier[ 0 ].image,
type: null,
values: null
};
var result;
// SFValue
if ( ctx.singleFieldValue ) {
result = this.visit( ctx.singleFieldValue[ 0 ] );
}
// MFValue
if ( ctx.multiFieldValue ) {
result = this.visit( ctx.multiFieldValue[ 0 ] );
}
data.type = result.type;
data.values = result.values;
return data;
},
def: function ( ctx ) {
return ctx.Identifier[ 0 ].image;
},
use: function ( ctx ) {
return { USE: ctx.Identifier[ 0 ].image };
},
singleFieldValue: function ( ctx ) {
return processField( this, ctx );
},
multiFieldValue: function ( ctx ) {
return processField( this, ctx );
},
route: function ( ctx ) {
var data = {
FROM: ctx.RouteIdentifier[ 0 ].image,
TO: ctx.RouteIdentifier[ 1 ].image
};
return data;
}
} );
function processField( scope, ctx ) {
var field = {
type: null,
values: []
};
if ( ctx.node ) {
field.type = 'node';
for ( var i = 0, l = ctx.node.length; i < l; i ++ ) {
var node = ctx.node[ i ];
field.values.push( scope.visit( node ) );
}
}
if ( ctx.use ) {
field.type = 'use';
for ( var i = 0, l = ctx.use.length; i < l; i ++ ) {
var use = ctx.use[ i ];
field.values.push( scope.visit( use ) );
}
}
if ( ctx.StringLiteral ) {
field.type = 'string';
for ( var i = 0, l = ctx.StringLiteral.length; i < l; i ++ ) {
var stringLiteral = ctx.StringLiteral[ i ];
field.values.push( stringLiteral.image.replace( /'|"/g, '' ) );
}
}
if ( ctx.NumberLiteral ) {
field.type = 'number';
for ( var i = 0, l = ctx.NumberLiteral.length; i < l; i ++ ) {
var numberLiteral = ctx.NumberLiteral[ i ];
field.values.push( parseFloat( numberLiteral.image ) );
}
}
if ( ctx.HexLiteral ) {
field.type = 'hex';
for ( var i = 0, l = ctx.HexLiteral.length; i < l; i ++ ) {
var hexLiteral = ctx.HexLiteral[ i ];
field.values.push( hexLiteral.image );
}
}
if ( ctx.TrueLiteral ) {
field.type = 'boolean';
for ( var i = 0, l = ctx.TrueLiteral.length; i < l; i ++ ) {
var trueLiteral = ctx.TrueLiteral[ i ];
if ( trueLiteral.image === 'TRUE' ) field.values.push( true );
}
}
if ( ctx.FalseLiteral ) {
field.type = 'boolean';
for ( var i = 0, l = ctx.FalseLiteral.length; i < l; i ++ ) {
var falseLiteral = ctx.FalseLiteral[ i ];
if ( falseLiteral.image === 'FALSE' ) field.values.push( false );
}
}
if ( ctx.NullLiteral ) {
field.type = 'null';
ctx.NullLiteral.forEach( function () {
field.values.push( null );
} );
}
return field;
}
return new VRMLToASTVisitor();
}
function parseTree( tree ) {
// console.log( JSON.stringify( tree, null, 2 ) );
var nodes = tree.nodes;
var scene = new Scene();
// first iteration: build nodemap based on DEF statements
for ( var i = 0, l = nodes.length; i < l; i ++ ) {
var node = nodes[ i ];
buildNodeMap( node );
}
// second iteration: build nodes
for ( var i = 0, l = nodes.length; i < l; i ++ ) {
var node = nodes[ i ];
var object = getNode( node );
if ( object instanceof Object3D ) scene.add( object );
}
return scene;
}
function buildNodeMap( node ) {
if ( node.DEF ) {
nodeMap[ node.DEF ] = node;
}
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
if ( field.type === 'node' ) {
var fieldValues = field.values;
for ( var j = 0, jl = fieldValues.length; j < jl; j ++ ) {
buildNodeMap( fieldValues[ j ] );
}
}
}
}
function getNode( node ) {
// handle case where a node refers to a different one
if ( node.USE ) {
return resolveUSE( node.USE );
}
if ( node.build !== undefined ) return node.build;
node.build = buildNode( node );
return node.build;
}
// node builder
function buildNode( node ) {
var nodeName = node.name;
var build;
switch ( nodeName ) {
case 'Group':
case 'Transform':
build = buildGroupingNode( node );
break;
case 'Background':
build = buildBackgroundNode( node );
break;
case 'Shape':
build = buildShapeNode( node );
break;
case 'Appearance':
build = buildAppearanceNode( node );
break;
case 'Material':
build = buildMaterialNode( node );
break;
case 'ImageTexture':
build = buildImageTextureNode( node );
break;
case 'PixelTexture':
build = buildPixelTextureNode( node );
break;
case 'TextureTransform':
build = buildTextureTransformNode( node );
break;
case 'IndexedFaceSet':
build = buildIndexedFaceSetNode( node );
break;
case 'IndexedLineSet':
build = buildIndexedLineSetNode( node );
break;
case 'PointSet':
build = buildPointSetNode( node );
break;
case 'Box':
build = buildBoxNode( node );
break;
case 'Cone':
build = buildConeNode( node );
break;
case 'Cylinder':
build = buildCylinderNode( node );
break;
case 'Sphere':
build = buildSphereNode( node );
break;
case 'Color':
case 'Coordinate':
case 'Normal':
case 'TextureCoordinate':
build = buildGeometricNode( node );
break;
case 'Anchor':
case 'Billboard':
case 'Collision':
case 'Inline':
case 'LOD':
case 'Switch':
case 'AudioClip':
case 'DirectionalLight':
case 'PointLight':
case 'Script':
case 'Sound':
case 'SpotLight':
case 'WorldInfo':
case 'CylinderSensor':
case 'PlaneSensor':
case 'ProximitySensor':
case 'SphereSensor':
case 'TimeSensor':
case 'TouchSensor':
case 'VisibilitySensor':
case 'ElevationGrid':
case 'Extrusion':
case 'Text':
case 'FontStyle':
case 'MovieTexture':
case 'ColorInterpolator':
case 'CoordinateInterpolator':
case 'NormalInterpolator':
case 'OrientationInterpolator':
case 'PositionInterpolator':
case 'ScalarInterpolator':
case 'Fog':
case 'NavigationInfo':
case 'Viewpoint':
// node not supported yet
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown node:', nodeName );
break;
}
return build;
}
function buildGroupingNode( node ) {
var object = new Group();
//
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'center':
// field not supported
break;
case 'children':
parseFieldChildren( fieldValues, object );
break;
case 'rotation':
var axis = new Vector3( fieldValues[ 0 ], fieldValues[ 1 ], fieldValues[ 2 ] );
var angle = fieldValues[ 3 ];
object.quaternion.setFromAxisAngle( axis, angle );
break;
case 'scale':
object.scale.set( fieldValues[ 0 ], fieldValues[ 1 ], fieldValues[ 2 ] );
break;
case 'scaleOrientation':
// field not supported
break;
case 'translation':
object.position.set( fieldValues[ 0 ], fieldValues[ 1 ], fieldValues[ 2 ] );
break;
case 'bboxCenter':
// field not supported
break;
case 'bboxSize':
// field not supported
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
return object;
}
function buildBackgroundNode( node ) {
var group = new Group();
var groundAngle, groundColor;
var skyAngle, skyColor;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'groundAngle':
groundAngle = fieldValues;
break;
case 'groundColor':
groundColor = fieldValues;
break;
case 'backUrl':
// field not supported
break;
case 'bottomUrl':
// field not supported
break;
case 'frontUrl':
// field not supported
break;
case 'leftUrl':
// field not supported
break;
case 'rightUrl':
// field not supported
break;
case 'topUrl':
// field not supported
break;
case 'skyAngle':
skyAngle = fieldValues;
break;
case 'skyColor':
skyColor = fieldValues;
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
var radius = 10000;
// sky
if ( skyColor ) {
var skyGeometry = new SphereBufferGeometry( radius, 32, 16 );
var skyMaterial = new MeshBasicMaterial( { fog: false, side: BackSide, depthWrite: false, depthTest: false } );
if ( skyColor.length > 3 ) {
paintFaces( skyGeometry, radius, skyAngle, toColorArray( skyColor ), true );
skyMaterial.vertexColors = VertexColors;
} else {
skyMaterial.color.setRGB( skyColor[ 0 ], skyColor[ 1 ], skyColor[ 2 ] );
}
var sky = new Mesh( skyGeometry, skyMaterial );
group.add( sky );
}
// ground
if ( groundColor ) {
if ( groundColor.length > 0 ) {
var groundGeometry = new SphereBufferGeometry( radius, 32, 16, 0, 2 * Math.PI, 0.5 * Math.PI, 1.5 * Math.PI );
var groundMaterial = new MeshBasicMaterial( { fog: false, side: BackSide, vertexColors: VertexColors, depthWrite: false, depthTest: false } );
paintFaces( groundGeometry, radius, groundAngle, toColorArray( groundColor ), false );
var ground = new Mesh( groundGeometry, groundMaterial );
group.add( ground );
}
}
// render background group first
group.renderOrder = - Infinity;
return group;
}
function buildShapeNode( node ) {
var fields = node.fields;
// if the appearance field is NULL or unspecified, lighting is off and the unlit object color is (0, 0, 0)
var material = new MeshBasicMaterial( { color: 0x000000 } );
var geometry;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'appearance':
if ( fieldValues[ 0 ] !== null ) {
material = getNode( fieldValues[ 0 ] );
}
break;
case 'geometry':
if ( fieldValues[ 0 ] !== null ) {
geometry = getNode( fieldValues[ 0 ] );
}
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
// build 3D object
var object;
if ( geometry && geometry.attributes.position ) {
var type = geometry._type;
if ( type === 'points' ) { // points
var pointsMaterial = new PointsMaterial( { color: 0xffffff } );
if ( geometry.attributes.color !== undefined ) {
pointsMaterial.vertexColors = VertexColors;
} else {
// if the color field is NULL and there is a material defined for the appearance affecting this PointSet, then use the emissiveColor of the material to draw the points
if ( material.isMeshPhongMaterial ) {
pointsMaterial.color.copy( material.emissive );
}
}
object = new Points( geometry, pointsMaterial );
} else if ( type === 'line' ) { // lines
var lineMaterial = new LineBasicMaterial( { color: 0xffffff } );
if ( geometry.attributes.color !== undefined ) {
lineMaterial.vertexColors = VertexColors;
} else {
// if the color field is NULL and there is a material defined for the appearance affecting this IndexedLineSet, then use the emissiveColor of the material to draw the lines
if ( material.isMeshPhongMaterial ) {
lineMaterial.color.copy( material.emissive );
}
}
object = new LineSegments( geometry, lineMaterial );
} else { // consider meshes
// check "solid" hint (it's placed in the geometry but affects the material)
if ( geometry._solid !== undefined ) {
material.side = ( geometry._solid ) ? FrontSide : DoubleSide;
}
// check for vertex colors
if ( geometry.attributes.color !== undefined ) {
material.vertexColors = VertexColors;
}
object = new Mesh( geometry, material );
}
} else {
object = new Object3D();
// if the geometry field is NULL or no vertices are defined the object is not drawn
object.visible = false;
}
return object;
}
function buildAppearanceNode( node ) {
var material = new MeshPhongMaterial();
var transformData;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'material':
if ( fieldValues[ 0 ] !== null ) {
var materialData = getNode( fieldValues[ 0 ] );
if ( materialData.diffuseColor ) material.color.copy( materialData.diffuseColor );
if ( materialData.emissiveColor ) material.emissive.copy( materialData.emissiveColor );
if ( materialData.shininess ) material.shininess = materialData.shininess;
if ( materialData.specularColor ) material.specular.copy( materialData.specularColor );
if ( materialData.transparency ) material.opacity = 1 - materialData.transparency;
if ( materialData.transparency > 0 ) material.transparent = true;
} else {
// if the material field is NULL or unspecified, lighting is off and the unlit object color is (0, 0, 0)
material = new MeshBasicMaterial( { color: 0x000000 } );
}
break;
case 'texture':
var textureNode = fieldValues[ 0 ];
if ( textureNode !== null ) {
if ( textureNode.name === 'ImageTexture' || textureNode.name === 'PixelTexture' ) {
material.map = getNode( textureNode );
} else {
// MovieTexture not supported yet
}
}
break;
case 'textureTransform':
if ( fieldValues[ 0 ] !== null ) {
transformData = getNode( fieldValues[ 0 ] );
}
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
// only apply texture transform data if a texture was defined
if ( material.map ) {
// respect VRML lighting model
if ( material.map.__type ) {
switch ( material.map.__type ) {
case TEXTURE_TYPE.INTENSITY_ALPHA:
material.opacity = 1; // ignore transparency
break;
case TEXTURE_TYPE.RGB:
material.color.set( 0xffffff ); // ignore material color
break;
case TEXTURE_TYPE.RGBA:
material.color.set( 0xffffff ); // ignore material color
material.opacity = 1; // ignore transparency
break;
default:
}
delete material.map.__type;
}
// apply texture transform
if ( transformData ) {
material.map.center.copy( transformData.center );
material.map.rotation = transformData.rotation;
material.map.repeat.copy( transformData.scale );
material.map.offset.copy( transformData.translation );
}
}
return material;
}
function buildMaterialNode( node ) {
var materialData = {};
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'ambientIntensity':
// field not supported
break;
case 'diffuseColor':
materialData.diffuseColor = new Color( fieldValues[ 0 ], fieldValues[ 1 ], fieldValues[ 2 ] );
break;
case 'emissiveColor':
materialData.emissiveColor = new Color( fieldValues[ 0 ], fieldValues[ 1 ], fieldValues[ 2 ] );
break;
case 'shininess':
materialData.shininess = fieldValues[ 0 ];
break;
case 'specularColor':
materialData.emissiveColor = new Color( fieldValues[ 0 ], fieldValues[ 1 ], fieldValues[ 2 ] );
break;
case 'transparency':
materialData.transparency = fieldValues[ 0 ];
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
return materialData;
}
function parseHexColor( hex, textureType, color ) {
switch ( textureType ) {
case TEXTURE_TYPE.INTENSITY:
// Intensity texture: A one-component image specifies one-byte hexadecimal or integer values representing the intensity of the image
var value = parseInt( hex );
color.r = value;
color.g = value;
color.b = value;
break;
case TEXTURE_TYPE.INTENSITY_ALPHA:
// Intensity+Alpha texture: A two-component image specifies the intensity in the first (high) byte and the alpha opacity in the second (low) byte.
var value = parseInt( "0x" + hex.substring( 2, 4 ) );
color.r = value;
color.g = value;
color.b = value;
color.a = parseInt( "0x" + hex.substring( 4, 6 ) );
break;
case TEXTURE_TYPE.RGB:
// RGB texture: Pixels in a three-component image specify the red component in the first (high) byte, followed by the green and blue components
color.r = parseInt( "0x" + hex.substring( 2, 4 ) );
color.g = parseInt( "0x" + hex.substring( 4, 6 ) );
color.b = parseInt( "0x" + hex.substring( 6, 8 ) );
break;
case TEXTURE_TYPE.RGBA:
// RGBA texture: Four-component images specify the alpha opacity byte after red/green/blue
color.r = parseInt( "0x" + hex.substring( 2, 4 ) );
color.g = parseInt( "0x" + hex.substring( 4, 6 ) );
color.b = parseInt( "0x" + hex.substring( 6, 8 ) );
color.a = parseInt( "0x" + hex.substring( 8, 10 ) );
break;
default:
}
}
function getTextureType( num_components ) {
var type;
switch ( num_components ) {
case 1:
type = TEXTURE_TYPE.INTENSITY;
break;
case 2:
type = TEXTURE_TYPE.INTENSITY_ALPHA;
break;
case 3:
type = TEXTURE_TYPE.RGB;
break;
case 4:
type = TEXTURE_TYPE.RGBA;
break;
default:
}
return type;
}
function buildPixelTextureNode( node ) {
var texture;
var wrapS = RepeatWrapping;
var wrapT = RepeatWrapping;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'image':
var width = fieldValues[ 0 ];
var height = fieldValues[ 1 ];
var num_components = fieldValues[ 2 ];
var useAlpha = ( num_components === 2 || num_components === 4 );
var textureType = getTextureType( num_components );
var size = ( ( useAlpha === true ) ? 4 : 3 ) * ( width * height );
var data = new Uint8Array( size );
var color = { r: 0, g: 0, b: 0, a: 0 };
for ( var j = 3, k = 0, jl = fieldValues.length; j < jl; j ++, k ++ ) {
parseHexColor( fieldValues[ j ], textureType, color );
if ( useAlpha === true ) {
var stride = k * 4;
data[ stride + 0 ] = color.r;
data[ stride + 1 ] = color.g;
data[ stride + 2 ] = color.b;
data[ stride + 3 ] = color.a;
} else {
var stride = k * 3;
data[ stride + 0 ] = color.r;
data[ stride + 1 ] = color.g;
data[ stride + 2 ] = color.b;
}
}
texture = new DataTexture( data, width, height, ( useAlpha === true ) ? RGBAFormat : RGBFormat );
texture.__type = textureType; // needed for material modifications
break;
case 'repeatS':
if ( fieldValues[ 0 ] === false ) wrapS = ClampToEdgeWrapping;
break;
case 'repeatT':
if ( fieldValues[ 0 ] === false ) wrapT = ClampToEdgeWrapping;
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
if ( texture ) {
texture.wrapS = wrapS;
texture.wrapT = wrapT;
}
return texture;
}
function buildImageTextureNode( node ) {
var texture;
var wrapS = RepeatWrapping;
var wrapT = RepeatWrapping;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'url':
var url = fieldValues[ 0 ];
if ( url ) texture = textureLoader.load( url );
break;
case 'repeatS':
if ( fieldValues[ 0 ] === false ) wrapS = ClampToEdgeWrapping;
break;
case 'repeatT':
if ( fieldValues[ 0 ] === false ) wrapT = ClampToEdgeWrapping;
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
if ( texture ) {
texture.wrapS = wrapS;
texture.wrapT = wrapT;
}
return texture;
}
function buildTextureTransformNode( node ) {
var transformData = {
center: new Vector2(),
rotation: new Vector2(),
scale: new Vector2(),
translation: new Vector2()
};
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'center':
transformData.center.set( fieldValues[ 0 ], fieldValues[ 1 ] );
break;
case 'rotation':
transformData.rotation = fieldValues[ 0 ];
break;
case 'scale':
transformData.scale.set( fieldValues[ 0 ], fieldValues[ 1 ] );
break;
case 'translation':
transformData.translation.set( fieldValues[ 0 ], fieldValues[ 1 ] );
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
return transformData;
}
function buildGeometricNode( node ) {
return node.fields[ 0 ].values;
}
function buildIndexedFaceSetNode( node ) {
var color, coord, normal, texCoord;
var ccw = true, solid = true, creaseAngle = 0;
var colorIndex, coordIndex, normalIndex, texCoordIndex;
var colorPerVertex = true, normalPerVertex = true;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'color':
var colorNode = fieldValues[ 0 ];
if ( colorNode !== null ) {
color = getNode( colorNode );
}
break;
case 'coord':
var coordNode = fieldValues[ 0 ];
if ( coordNode !== null ) {
coord = getNode( coordNode );
}
break;
case 'normal':
var normalNode = fieldValues[ 0 ];
if ( normalNode !== null ) {
normal = getNode( normalNode );
}
break;
case 'texCoord':
var texCoordNode = fieldValues[ 0 ];
if ( texCoordNode !== null ) {
texCoord = getNode( texCoordNode );
}
break;
case 'ccw':
ccw = fieldValues[ 0 ];
break;
case 'colorIndex':
colorIndex = fieldValues;
break;
case 'colorPerVertex':
colorPerVertex = fieldValues[ 0 ];
break;
case 'convex':
// field not supported
break;
case 'coordIndex':
coordIndex = fieldValues;
break;
case 'creaseAngle':
creaseAngle = fieldValues[ 0 ];
break;
case 'normalIndex':
normalIndex = fieldValues;
break;
case 'normalPerVertex':
normalPerVertex = fieldValues[ 0 ];
break;
case 'solid':
solid = fieldValues[ 0 ];
break;
case 'texCoordIndex':
texCoordIndex = fieldValues;
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
if ( coordIndex === undefined ) {
console.warn( 'THREE.VRMLLoader: Missing coordIndex.' );
return new BufferGeometry(); // handle VRML files with incomplete geometry definition
}
var triangulatedCoordIndex = triangulateFaceIndex( coordIndex, ccw );
var positionAttribute;
var colorAttribute;
var normalAttribute;
var uvAttribute;
if ( color ) {
if ( colorPerVertex === true ) {
if ( colorIndex && colorIndex.length > 0 ) {
// if the colorIndex field is not empty, then it is used to choose colors for each vertex of the IndexedFaceSet.
var triangulatedColorIndex = triangulateFaceIndex( colorIndex, ccw );
colorAttribute = computeAttributeFromIndexedData( triangulatedCoordIndex, triangulatedColorIndex, color, 3 );
} else {
// if the colorIndex field is empty, then the coordIndex field is used to choose colors from the Color node
colorAttribute = toNonIndexedAttribute( triangulatedCoordIndex, new Float32BufferAttribute( color, 3 ) );
}
} else {
if ( colorIndex && colorIndex.length > 0 ) {
// if the colorIndex field is not empty, then they are used to choose one color for each face of the IndexedFaceSet
var flattenFaceColors = flattenData( color, colorIndex );
var triangulatedFaceColors = triangulateFaceData( flattenFaceColors, coordIndex );
colorAttribute = computeAttributeFromFaceData( triangulatedCoordIndex, triangulatedFaceColors );
} else {
// if the colorIndex field is empty, then the color are applied to each face of the IndexedFaceSet in order
var triangulatedFaceColors = triangulateFaceData( color, coordIndex );
colorAttribute = computeAttributeFromFaceData( triangulatedCoordIndex, triangulatedFaceColors );
}
}
}
if ( normal ) {
if ( normalPerVertex === true ) {
// consider vertex normals
if ( normalIndex && normalIndex.length > 0 ) {
// if the normalIndex field is not empty, then it is used to choose normals for each vertex of the IndexedFaceSet.
var triangulatedNormalIndex = triangulateFaceIndex( normalIndex, ccw );
normalAttribute = computeAttributeFromIndexedData( triangulatedCoordIndex, triangulatedNormalIndex, normal, 3 );
} else {
// if the normalIndex field is empty, then the coordIndex field is used to choose normals from the Normal node
normalAttribute = toNonIndexedAttribute( triangulatedCoordIndex, new Float32BufferAttribute( normal, 3 ) );
}
} else {
// consider face normals
if ( normalIndex && normalIndex.length > 0 ) {
// if the normalIndex field is not empty, then they are used to choose one normal for each face of the IndexedFaceSet
var flattenFaceNormals = flattenData( normal, normalIndex );
var triangulatedFaceNormals = triangulateFaceData( flattenFaceNormals, coordIndex );
normalAttribute = computeAttributeFromFaceData( triangulatedCoordIndex, triangulatedFaceNormals );
} else {
// if the normalIndex field is empty, then the normals are applied to each face of the IndexedFaceSet in order
var triangulatedFaceNormals = triangulateFaceData( normal, coordIndex );
normalAttribute = computeAttributeFromFaceData( triangulatedCoordIndex, triangulatedFaceNormals );
}
}
} else {
// if the normal field is NULL, then the loader should automatically generate normals, using creaseAngle to determine if and how normals are smoothed across shared vertices
normalAttribute = computeNormalAttribute( triangulatedCoordIndex, coord, creaseAngle );
}
if ( texCoord ) {
// texture coordinates are always defined on vertex level
if ( texCoordIndex && texCoordIndex.length > 0 ) {
// if the texCoordIndex field is not empty, then it is used to choose texture coordinates for each vertex of the IndexedFaceSet.
var triangulatedTexCoordIndex = triangulateFaceIndex( texCoordIndex, ccw );
uvAttribute = computeAttributeFromIndexedData( triangulatedCoordIndex, triangulatedTexCoordIndex, texCoord, 2 );
} else {
// if the texCoordIndex field is empty, then the coordIndex array is used to choose texture coordinates from the TextureCoordinate node
uvAttribute = toNonIndexedAttribute( triangulatedCoordIndex, new Float32BufferAttribute( texCoord, 2 ) );
}
}
var geometry = new BufferGeometry();
positionAttribute = toNonIndexedAttribute( triangulatedCoordIndex, new Float32BufferAttribute( coord, 3 ) );
geometry.setAttribute( 'position', positionAttribute );
geometry.setAttribute( 'normal', normalAttribute );
// optional attributes
if ( colorAttribute ) geometry.setAttribute( 'color', colorAttribute );
if ( uvAttribute ) geometry.setAttribute( 'uv', uvAttribute );
// "solid" influences the material so let's store it for later use
geometry._solid = solid;
geometry._type = 'mesh';
return geometry;
}
function buildIndexedLineSetNode( node ) {
var color, coord;
var colorIndex, coordIndex;
var colorPerVertex = true;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'color':
var colorNode = fieldValues[ 0 ];
if ( colorNode !== null ) {
color = getNode( colorNode );
}
break;
case 'coord':
var coordNode = fieldValues[ 0 ];
if ( coordNode !== null ) {
coord = getNode( coordNode );
}
break;
case 'colorIndex':
colorIndex = fieldValues;
break;
case 'colorPerVertex':
colorPerVertex = fieldValues[ 0 ];
break;
case 'coordIndex':
coordIndex = fieldValues;
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
// build lines
var colorAttribute;
var expandedLineIndex = expandLineIndex( coordIndex ); // create an index for three.js's linesegment primitive
if ( color ) {
if ( colorPerVertex === true ) {
if ( colorIndex.length > 0 ) {
// if the colorIndex field is not empty, then one color is used for each polyline of the IndexedLineSet.
var expandedColorIndex = expandLineIndex( colorIndex ); // compute colors for each line segment (rendering primitve)
colorAttribute = computeAttributeFromIndexedData( expandedLineIndex, expandedColorIndex, color, 3 ); // compute data on vertex level
} else {
// if the colorIndex field is empty, then the colors are applied to each polyline of the IndexedLineSet in order.
colorAttribute = toNonIndexedAttribute( expandedLineIndex, new Float32BufferAttribute( color, 3 ) );
}
} else {
if ( colorIndex.length > 0 ) {
// if the colorIndex field is not empty, then colors are applied to each vertex of the IndexedLineSet
var flattenLineColors = flattenData( color, colorIndex ); // compute colors for each VRML primitve
var expandedLineColors = expandLineData( flattenLineColors, coordIndex ); // compute colors for each line segment (rendering primitve)
colorAttribute = computeAttributeFromLineData( expandedLineIndex, expandedLineColors ); // compute data on vertex level
} else {
// if the colorIndex field is empty, then the coordIndex field is used to choose colors from the Color node
var expandedLineColors = expandLineData( color, coordIndex ); // compute colors for each line segment (rendering primitve)
colorAttribute = computeAttributeFromLineData( expandedLineIndex, expandedLineColors ); // compute data on vertex level
}
}
}
//
var geometry = new BufferGeometry();
var positionAttribute = toNonIndexedAttribute( expandedLineIndex, new Float32BufferAttribute( coord, 3 ) );
geometry.setAttribute( 'position', positionAttribute );
if ( colorAttribute ) geometry.setAttribute( 'color', colorAttribute );
geometry._type = 'line';
return geometry;
}
function buildPointSetNode( node ) {
var geometry;
var color, coord;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'color':
var colorNode = fieldValues[ 0 ];
if ( colorNode !== null ) {
color = getNode( colorNode );
}
break;
case 'coord':
var coordNode = fieldValues[ 0 ];
if ( coordNode !== null ) {
coord = getNode( coordNode );
}
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
var geometry = new BufferGeometry();
geometry.setAttribute( 'position', new Float32BufferAttribute( coord, 3 ) );
if ( color ) geometry.setAttribute( 'color', new Float32BufferAttribute( color, 3 ) );
geometry._type = 'points';
return geometry;
}
function buildBoxNode( node ) {
var size = new Vector3( 2, 2, 2 );
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'size':
size.x = fieldValues[ 0 ];
size.y = fieldValues[ 1 ];
size.z = fieldValues[ 2 ];
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
var geometry = new BoxBufferGeometry( size.x, size.y, size.z );
return geometry;
}
function buildConeNode( node ) {
var radius = 1, height = 2, openEnded = false;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'bottom':
openEnded = ! fieldValues[ 0 ];
break;
case 'bottomRadius':
radius = fieldValues[ 0 ];
break;
case 'height':
height = fieldValues[ 0 ];
break;
case 'side':
// field not supported
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
var geometry = new ConeBufferGeometry( radius, height, 16, 1, openEnded );
return geometry;
}
function buildCylinderNode( node ) {
var radius = 1, height = 2;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'bottom':
// field not supported
break;
case 'radius':
radius = fieldValues[ 0 ];
break;
case 'height':
height = fieldValues[ 0 ];
break;
case 'side':
// field not supported
break;
case 'top':
// field not supported
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
var geometry = new CylinderBufferGeometry( radius, radius, height, 16, 1 );
return geometry;
}
function buildSphereNode( node ) {
var radius = 1;
var fields = node.fields;
for ( var i = 0, l = fields.length; i < l; i ++ ) {
var field = fields[ i ];
var fieldName = field.name;
var fieldValues = field.values;
switch ( fieldName ) {
case 'radius':
radius = fieldValues[ 0 ];
break;
default:
console.warn( 'THREE.VRMLLoader: Unknown field:', fieldName );
break;
}
}
var geometry = new SphereBufferGeometry( radius, 16, 16 );
return geometry;
}
// helper functions
function resolveUSE( identifier ) {
var node = nodeMap[ identifier ];
var build = getNode( node );
// because the same 3D objects can have different transformations, it's necessary to clone them.
// materials can be influenced by the geometry (e.g. vertex normals). cloning is necessary to avoid
// any side effects
return ( build.isObject3D || build.isMaterial ) ? build.clone() : build;
}
function parseFieldChildren( children, owner ) {
for ( var i = 0, l = children.length; i < l; i ++ ) {
var object = getNode( children[ i ] );
if ( object instanceof Object3D ) owner.add( object );
}
}
function triangulateFaceIndex( index, ccw ) {
var indices = [];
// since face defintions can have more than three vertices, it's necessary to
// perform a simple triangulation
var start = 0;
for ( var i = 0, l = index.length; i < l; i ++ ) {
var i1 = index[ start ];
var i2 = index[ i + ( ccw ? 1 : 2 ) ];
var i3 = index[ i + ( ccw ? 2 : 1 ) ];
indices.push( i1, i2, i3 );
// an index of -1 indicates that the current face has ended and the next one begins
if ( index[ i + 3 ] === - 1 || i + 3 >= l ) {
i += 3;
start = i + 1;
}
}
return indices;
}
function triangulateFaceData( data, index ) {
var triangulatedData = [];
var start = 0;
for ( var i = 0, l = index.length; i < l; i ++ ) {
var stride = start * 3;
var x = data[ stride ];
var y = data[ stride + 1 ];
var z = data[ stride + 2 ];
triangulatedData.push( x, y, z );
// an index of -1 indicates that the current face has ended and the next one begins
if ( index[ i + 3 ] === - 1 || i + 3 >= l ) {
i += 3;
start ++;
}
}
return triangulatedData;
}
function flattenData( data, index ) {
var flattenData = [];
for ( var i = 0, l = index.length; i < l; i ++ ) {
var i1 = index[ i ];
var stride = i1 * 3;
var x = data[ stride ];
var y = data[ stride + 1 ];
var z = data[ stride + 2 ];
flattenData.push( x, y, z );
}
return flattenData;
}
function expandLineIndex( index ) {
var indices = [];
for ( var i = 0, l = index.length; i < l; i ++ ) {
var i1 = index[ i ];
var i2 = index[ i + 1 ];
indices.push( i1, i2 );
// an index of -1 indicates that the current line has ended and the next one begins
if ( index[ i + 2 ] === - 1 || i + 2 >= l ) {
i += 2;
}
}
return indices;
}
function expandLineData( data, index ) {
var triangulatedData = [];
var start = 0;
for ( var i = 0, l = index.length; i < l; i ++ ) {
var stride = start * 3;
var x = data[ stride ];
var y = data[ stride + 1 ];
var z = data[ stride + 2 ];
triangulatedData.push( x, y, z );
// an index of -1 indicates that the current line has ended and the next one begins
if ( index[ i + 2 ] === - 1 || i + 2 >= l ) {
i += 2;
start ++;
}
}
return triangulatedData;
}
var vA = new Vector3();
var vB = new Vector3();
var vC = new Vector3();
var uvA = new Vector2();
var uvB = new Vector2();
var uvC = new Vector2();
function computeAttributeFromIndexedData( coordIndex, index, data, itemSize ) {
var array = [];
// we use the coordIndex.length as delimiter since normalIndex must contain at least as many indices
for ( var i = 0, l = coordIndex.length; i < l; i += 3 ) {
var a = index[ i ];
var b = index[ i + 1 ];
var c = index[ i + 2 ];
if ( itemSize === 2 ) {
uvA.fromArray( data, a * itemSize );
uvB.fromArray( data, b * itemSize );
uvC.fromArray( data, c * itemSize );
array.push( uvA.x, uvA.y );
array.push( uvB.x, uvB.y );
array.push( uvC.x, uvC.y );
} else {
vA.fromArray( data, a * itemSize );
vB.fromArray( data, b * itemSize );
vC.fromArray( data, c * itemSize );
array.push( vA.x, vA.y, vA.z );
array.push( vB.x, vB.y, vB.z );
array.push( vC.x, vC.y, vC.z );
}
}
return new Float32BufferAttribute( array, itemSize );
}
function computeAttributeFromFaceData( index, faceData ) {
var array = [];
for ( var i = 0, j = 0, l = index.length; i < l; i += 3, j ++ ) {
vA.fromArray( faceData, j * 3 );
array.push( vA.x, vA.y, vA.z );
array.push( vA.x, vA.y, vA.z );
array.push( vA.x, vA.y, vA.z );
}
return new Float32BufferAttribute( array, 3 );
}
function computeAttributeFromLineData( index, lineData ) {
var array = [];
for ( var i = 0, j = 0, l = index.length; i < l; i += 2, j ++ ) {
vA.fromArray( lineData, j * 3 );
array.push( vA.x, vA.y, vA.z );
array.push( vA.x, vA.y, vA.z );
}
return new Float32BufferAttribute( array, 3 );
}
function toNonIndexedAttribute( indices, attribute ) {
var array = attribute.array;
var itemSize = attribute.itemSize;
var array2 = new array.constructor( indices.length * itemSize );
var index = 0, index2 = 0;
for ( var i = 0, l = indices.length; i < l; i ++ ) {
index = indices[ i ] * itemSize;
for ( var j = 0; j < itemSize; j ++ ) {
array2[ index2 ++ ] = array[ index ++ ];
}
}
return new Float32BufferAttribute( array2, itemSize );
}
var ab = new Vector3();
var cb = new Vector3();
function computeNormalAttribute( index, coord, creaseAngle ) {
var faces = [];
var vertexNormals = {};
// prepare face and raw vertex normals
for ( var i = 0, l = index.length; i < l; i += 3 ) {
var a = index[ i ];
var b = index[ i + 1 ];
var c = index[ i + 2 ];
var face = new Face( a, b, c );
vA.fromArray( coord, a * 3 );
vB.fromArray( coord, b * 3 );
vC.fromArray( coord, c * 3 );
cb.subVectors( vC, vB );
ab.subVectors( vA, vB );
cb.cross( ab );
cb.normalize();
face.normal.copy( cb );
if ( vertexNormals[ a ] === undefined ) vertexNormals[ a ] = [];
if ( vertexNormals[ b ] === undefined ) vertexNormals[ b ] = [];
if ( vertexNormals[ c ] === undefined ) vertexNormals[ c ] = [];
vertexNormals[ a ].push( face.normal );
vertexNormals[ b ].push( face.normal );
vertexNormals[ c ].push( face.normal );
faces.push( face );
}
// compute vertex normals and build final geometry
var normals = [];
for ( var i = 0, l = faces.length; i < l; i ++ ) {
var face = faces[ i ];
var nA = weightedNormal( vertexNormals[ face.a ], face.normal, creaseAngle );
var nB = weightedNormal( vertexNormals[ face.b ], face.normal, creaseAngle );
var nC = weightedNormal( vertexNormals[ face.c ], face.normal, creaseAngle );
vA.fromArray( coord, face.a * 3 );
vB.fromArray( coord, face.b * 3 );
vC.fromArray( coord, face.c * 3 );
normals.push( nA.x, nA.y, nA.z );
normals.push( nB.x, nB.y, nB.z );
normals.push( nC.x, nC.y, nC.z );
}
return new Float32BufferAttribute( normals, 3 );
}
function weightedNormal( normals, vector, creaseAngle ) {
var normal = new Vector3();
if ( creaseAngle === 0 ) {
normal.copy( vector );
} else {
for ( var i = 0, l = normals.length; i < l; i ++ ) {
if ( normals[ i ].angleTo( vector ) < creaseAngle ) {
normal.add( normals[ i ] );
}
}
}
return normal.normalize();
}
function toColorArray( colors ) {
var array = [];
for ( var i = 0, l = colors.length; i < l; i += 3 ) {
array.push( new Color( colors[ i ], colors[ i + 1 ], colors[ i + 2 ] ) );
}
return array;
}
/**
* Vertically paints the faces interpolating between the
* specified colors at the specified angels. This is used for the Background
* node, but could be applied to other nodes with multiple faces as well.
*
* When used with the Background node, default is directionIsDown is true if
* interpolating the skyColor down from the Zenith. When interpolationg up from
* the Nadir i.e. interpolating the groundColor, the directionIsDown is false.
*
* The first angle is never specified, it is the Zenith (0 rad). Angles are specified
* in radians. The geometry is thought a sphere, but could be anything. The color interpolation
* is linear along the Y axis in any case.
*
* You must specify one more color than you have angles at the beginning of the colors array.
* This is the color of the Zenith (the top of the shape).
*
* @param {BufferGeometry} geometry
* @param {number} radius
* @param {array} angles
* @param {array} colors
* @param {boolean} topDown - Whether to work top down or bottom up.
*/
function paintFaces( geometry, radius, angles, colors, topDown ) {
// compute threshold values
var thresholds = [];
var startAngle = ( topDown === true ) ? 0 : Math.PI;
for ( var i = 0, l = colors.length; i < l; i ++ ) {
var angle = ( i === 0 ) ? 0 : angles[ i - 1 ];
angle = ( topDown === true ) ? angle : ( startAngle - angle );
var point = new Vector3();
point.setFromSphericalCoords( radius, angle, 0 );
thresholds.push( point );
}
// generate vertex colors
var indices = geometry.index;
var positionAttribute = geometry.attributes.position;
var colorAttribute = new BufferAttribute( new Float32Array( geometry.attributes.position.count * 3 ), 3 );
var position = new Vector3();
var color = new Color();
for ( var i = 0; i < indices.count; i ++ ) {
var index = indices.getX( i );
position.fromBufferAttribute( positionAttribute, index );
var thresholdIndexA, thresholdIndexB;
var t = 1;
for ( var j = 1; j < thresholds.length; j ++ ) {
thresholdIndexA = j - 1;
thresholdIndexB = j;
var thresholdA = thresholds[ thresholdIndexA ];
var thresholdB = thresholds[ thresholdIndexB ];
if ( topDown === true ) {
// interpolation for sky color
if ( position.y <= thresholdA.y && position.y > thresholdB.y ) {
t = Math.abs( thresholdA.y - position.y ) / Math.abs( thresholdA.y - thresholdB.y );
break;
}
} else {
// interpolation for ground color
if ( position.y >= thresholdA.y && position.y < thresholdB.y ) {
t = Math.abs( thresholdA.y - position.y ) / Math.abs( thresholdA.y - thresholdB.y );
break;
}
}
}
var colorA = colors[ thresholdIndexA ];
var colorB = colors[ thresholdIndexB ];
color.copy( colorA ).lerp( colorB, t );
colorAttribute.setXYZ( index, color.r, color.g, color.b );
}
geometry.setAttribute( 'color', colorAttribute );
}
//
var textureLoader = new TextureLoader( this.manager );
textureLoader.setPath( this.resourcePath || path ).setCrossOrigin( this.crossOrigin );
// create JSON representing the tree structure of the VRML asset
var tree = generateVRMLTree( data );
// check version (only 2.0 is supported)
if ( tree.version.indexOf( 'V2.0' ) === - 1 ) {
throw Error( 'THREE.VRMLLexer: Version of VRML asset not supported.' );
}
// parse the tree structure to a three.js scene
var scene = parseTree( tree );
return scene;
}
} );
function VRMLLexer( tokens ) {
this.lexer = new chevrotain.Lexer( tokens );
}
VRMLLexer.prototype = {
constructor: VRMLLexer,
lex: function ( inputText ) {
var lexingResult = this.lexer.tokenize( inputText );
if ( lexingResult.errors.length > 0 ) {
console.error( lexingResult.errors );
throw Error( 'THREE.VRMLLexer: Lexing errors detected.' );
}
return lexingResult;
}
};
function VRMLParser( tokenVocabulary ) {
chevrotain.Parser.call( this, tokenVocabulary );
var $ = this;
var Version = tokenVocabulary[ 'Version' ];
var LCurly = tokenVocabulary[ 'LCurly' ];
var RCurly = tokenVocabulary[ 'RCurly' ];
var LSquare = tokenVocabulary[ 'LSquare' ];
var RSquare = tokenVocabulary[ 'RSquare' ];
var Identifier = tokenVocabulary[ 'Identifier' ];
var RouteIdentifier = tokenVocabulary[ 'RouteIdentifier' ];
var StringLiteral = tokenVocabulary[ 'StringLiteral' ];
var HexLiteral = tokenVocabulary[ 'HexLiteral' ];
var NumberLiteral = tokenVocabulary[ 'NumberLiteral' ];
var TrueLiteral = tokenVocabulary[ 'TrueLiteral' ];
var FalseLiteral = tokenVocabulary[ 'FalseLiteral' ];
var NullLiteral = tokenVocabulary[ 'NullLiteral' ];
var DEF = tokenVocabulary[ 'DEF' ];
var USE = tokenVocabulary[ 'USE' ];
var ROUTE = tokenVocabulary[ 'ROUTE' ];
var TO = tokenVocabulary[ 'TO' ];
var NodeName = tokenVocabulary[ 'NodeName' ];
$.RULE( 'vrml', function () {
$.SUBRULE( $.version );
$.AT_LEAST_ONE( function () {
$.SUBRULE( $.node );
} );
$.MANY( function () {
$.SUBRULE( $.route );
} );
} );
$.RULE( 'version', function () {
$.CONSUME( Version );
} );
$.RULE( 'node', function () {
$.OPTION( function () {
$.SUBRULE( $.def );
} );
$.CONSUME( NodeName );
$.CONSUME( LCurly );
$.MANY( function () {
$.SUBRULE( $.field );
} );
$.CONSUME( RCurly );
} );
$.RULE( 'field', function () {
$.CONSUME( Identifier );
$.OR2( [
{ ALT: function () {
$.SUBRULE( $.singleFieldValue );
} },
{ ALT: function () {
$.SUBRULE( $.multiFieldValue );
} }
] );
} );
$.RULE( 'def', function () {
$.CONSUME( DEF );
$.CONSUME( Identifier );
} );
$.RULE( 'use', function () {
$.CONSUME( USE );
$.CONSUME( Identifier );
} );
$.RULE( 'singleFieldValue', function () {
$.AT_LEAST_ONE( function () {
$.OR( [
{ ALT: function () {
$.SUBRULE( $.node );
} },
{ ALT: function () {
$.SUBRULE( $.use );
} },
{ ALT: function () {
$.CONSUME( StringLiteral );
} },
{ ALT: function () {
$.CONSUME( HexLiteral );
} },
{ ALT: function () {
$.CONSUME( NumberLiteral );
} },
{ ALT: function () {
$.CONSUME( TrueLiteral );
} },
{ ALT: function () {
$.CONSUME( FalseLiteral );
} },
{ ALT: function () {
$.CONSUME( NullLiteral );
} }
] );
} );
} );
$.RULE( 'multiFieldValue', function () {
$.CONSUME( LSquare );
$.MANY( function () {
$.OR( [
{ ALT: function () {
$.SUBRULE( $.node );
} },
{ ALT: function () {
$.SUBRULE( $.use );
} },
{ ALT: function () {
$.CONSUME( StringLiteral );
} },
{ ALT: function () {
$.CONSUME( HexLiteral );
} },
{ ALT: function () {
$.CONSUME( NumberLiteral );
} },
{ ALT: function () {
$.CONSUME( NullLiteral );
} }
] );
} );
$.CONSUME( RSquare );
} );
$.RULE( 'route', function () {
$.CONSUME( ROUTE );
$.CONSUME( RouteIdentifier );
$.CONSUME( TO );
$.CONSUME2( RouteIdentifier );
} );
this.performSelfAnalysis();
}
VRMLParser.prototype = Object.create( chevrotain.Parser.prototype );
VRMLParser.prototype.constructor = VRMLParser;
function Face( a, b, c ) {
this.a = a;
this.b = b;
this.c = c;
this.normal = new Vector3();
}
var TEXTURE_TYPE = {
INTENSITY: 1,
INTENSITY_ALPHA: 2,
RGB: 3,
RGBA: 4
};
return VRMLLoader;
} )();
export { VRMLLoader };
