import {
BufferGeometryLoader,
FileLoader,
Loader,
Object3D,
MeshStandardMaterial,
Mesh,
Color,
Points,
PointsMaterial,
Line,
LineBasicMaterial,
Matrix4,
DirectionalLight,
PointLight,
SpotLight,
RectAreaLight,
Vector3,
Sprite,
SpriteMaterial,
CanvasTexture,
LinearFilter,
ClampToEdgeWrapping,
RepeatWrapping,
TextureLoader
} from 'three';
const _taskCache = new WeakMap();
class Rhino3dmLoader extends Loader {
constructor( manager ) {
super( manager );
this.libraryPath = '';
this.libraryPending = null;
this.libraryBinary = null;
this.libraryConfig = {};
this.url = '';
this.workerLimit = 4;
this.workerPool = [];
this.workerNextTaskID = 1;
this.workerSourceURL = '';
this.workerConfig = {};
this.materials = [];
this.warnings = [];
}
setLibraryPath( path ) {
this.libraryPath = path;
return this;
}
setWorkerLimit( workerLimit ) {
this.workerLimit = workerLimit;
return this;
}
load( url, onLoad, onProgress, onError ) {
const loader = new FileLoader( this.manager );
loader.setPath( this.path );
loader.setResponseType( 'arraybuffer' );
loader.setRequestHeader( this.requestHeader );
this.url = url;
loader.load( url, ( buffer ) => {
// Check for an existing task using this buffer. A transferred buffer cannot be transferred
// again from this thread.
if ( _taskCache.has( buffer ) ) {
const cachedTask = _taskCache.get( buffer );
return cachedTask.promise.then( onLoad ).catch( onError );
}
this.decodeObjects( buffer, url )
.then( result => {
result.userData.warnings = this.warnings;
onLoad( result );
} )
.catch( e => onError( e ) );
}, onProgress, onError );
}
debug() {
console.log( 'Task load: ', this.workerPool.map( ( worker ) => worker._taskLoad ) );
}
decodeObjects( buffer, url ) {
let worker;
let taskID;
const taskCost = buffer.byteLength;
const objectPending = this._getWorker( taskCost )
.then( ( _worker ) => {
worker = _worker;
taskID = this.workerNextTaskID ++;
return new Promise( ( resolve, reject ) => {
worker._callbacks[ taskID ] = { resolve, reject };
worker.postMessage( { type: 'decode', id: taskID, buffer }, [ buffer ] );
// this.debug();
} );
} )
.then( ( message ) => this._createGeometry( message.data ) )
.catch( e => {
throw e;
} );
// Remove task from the task list.
// Note: replaced '.finally()' with '.catch().then()' block - iOS 11 support (#19416)
objectPending
.catch( () => true )
.then( () => {
if ( worker && taskID ) {
this._releaseTask( worker, taskID );
//this.debug();
}
} );
// Cache the task result.
_taskCache.set( buffer, {
url: url,
promise: objectPending
} );
return objectPending;
}
parse( data, onLoad, onError ) {
this.decodeObjects( data, '' )
.then( result => {
result.userData.warnings = this.warnings;
onLoad( result );
} )
.catch( e => onError( e ) );
}
_compareMaterials( material ) {
const mat = {};
mat.name = material.name;
mat.color = {};
mat.color.r = material.color.r;
mat.color.g = material.color.g;
mat.color.b = material.color.b;
mat.type = material.type;
for ( let i = 0; i < this.materials.length; i ++ ) {
const m = this.materials[ i ];
const _mat = {};
_mat.name = m.name;
_mat.color = {};
_mat.color.r = m.color.r;
_mat.color.g = m.color.g;
_mat.color.b = m.color.b;
_mat.type = m.type;
if ( JSON.stringify( mat ) === JSON.stringify( _mat ) ) {
return m;
}
}
this.materials.push( material );
return material;
}
_createMaterial( material ) {
if ( material === undefined ) {
return new MeshStandardMaterial( {
color: new Color( 1, 1, 1 ),
metalness: 0.8,
name: 'default',
side: 2
} );
}
const _diffuseColor = material.diffuseColor;
const diffusecolor = new Color( _diffuseColor.r / 255.0, _diffuseColor.g / 255.0, _diffuseColor.b / 255.0 );
if ( _diffuseColor.r === 0 && _diffuseColor.g === 0 && _diffuseColor.b === 0 ) {
diffusecolor.r = 1;
diffusecolor.g = 1;
diffusecolor.b = 1;
}
// console.log( material );
const mat = new MeshStandardMaterial( {
color: diffusecolor,
name: material.name,
side: 2,
transparent: material.transparency > 0 ? true : false,
opacity: 1.0 - material.transparency
} );
const textureLoader = new TextureLoader();
for ( let i = 0; i < material.textures.length; i ++ ) {
const texture = material.textures[ i ];
if ( texture.image !== null ) {
const map = textureLoader.load( texture.image );
switch ( texture.type ) {
case 'Diffuse':
mat.map = map;
break;
case 'Bump':
mat.bumpMap = map;
break;
case 'Transparency':
mat.alphaMap = map;
mat.transparent = true;
break;
case 'Emap':
mat.envMap = map;
break;
}
map.wrapS = texture.wrapU === 0 ? RepeatWrapping : ClampToEdgeWrapping;
map.wrapT = texture.wrapV === 0 ? RepeatWrapping : ClampToEdgeWrapping;
map.repeat.set( texture.repeat[ 0 ], texture.repeat[ 1 ] );
}
}
return mat;
}
_createGeometry( data ) {
// console.log(data);
const object = new Object3D();
const instanceDefinitionObjects = [];
const instanceDefinitions = [];
const instanceReferences = [];
object.userData[ 'layers' ] = data.layers;
object.userData[ 'groups' ] = data.groups;
object.userData[ 'settings' ] = data.settings;
object.userData[ 'objectType' ] = 'File3dm';
object.userData[ 'materials' ] = null;
object.name = this.url;
let objects = data.objects;
const materials = data.materials;
for ( let i = 0; i < objects.length; i ++ ) {
const obj = objects[ i ];
const attributes = obj.attributes;
switch ( obj.objectType ) {
case 'InstanceDefinition':
instanceDefinitions.push( obj );
break;
case 'InstanceReference':
instanceReferences.push( obj );
break;
default:
let _object;
if ( attributes.materialIndex >= 0 ) {
const rMaterial = materials[ attributes.materialIndex ];
let material = this._createMaterial( rMaterial );
material = this._compareMaterials( material );
_object = this._createObject( obj, material );
} else {
const material = this._createMaterial();
_object = this._createObject( obj, material );
}
if ( _object === undefined ) {
continue;
}
const layer = data.layers[ attributes.layerIndex ];
_object.visible = layer ? data.layers[ attributes.layerIndex ].visible : true;
if ( attributes.isInstanceDefinitionObject ) {
instanceDefinitionObjects.push( _object );
} else {
object.add( _object );
}
break;
}
}
for ( let i = 0; i < instanceDefinitions.length; i ++ ) {
const iDef = instanceDefinitions[ i ];
objects = [];
for ( let j = 0; j < iDef.attributes.objectIds.length; j ++ ) {
const objId = iDef.attributes.objectIds[ j ];
for ( let p = 0; p < instanceDefinitionObjects.length; p ++ ) {
const idoId = instanceDefinitionObjects[ p ].userData.attributes.id;
if ( objId === idoId ) {
objects.push( instanceDefinitionObjects[ p ] );
}
}
}
// Currently clones geometry and does not take advantage of instancing
for ( let j = 0; j < instanceReferences.length; j ++ ) {
const iRef = instanceReferences[ j ];
if ( iRef.geometry.parentIdefId === iDef.attributes.id ) {
const iRefObject = new Object3D();
const xf = iRef.geometry.xform.array;
const matrix = new Matrix4();
matrix.set( xf[ 0 ], xf[ 1 ], xf[ 2 ], xf[ 3 ], xf[ 4 ], xf[ 5 ], xf[ 6 ], xf[ 7 ], xf[ 8 ], xf[ 9 ], xf[ 10 ], xf[ 11 ], xf[ 12 ], xf[ 13 ], xf[ 14 ], xf[ 15 ] );
iRefObject.applyMatrix4( matrix );
for ( let p = 0; p < objects.length; p ++ ) {
iRefObject.add( objects[ p ].clone( true ) );
}
object.add( iRefObject );
}
}
}
object.userData[ 'materials' ] = this.materials;
return object;
}
_createObject( obj, mat ) {
const loader = new BufferGeometryLoader();
const attributes = obj.attributes;
let geometry, material, _color, color;
switch ( obj.objectType ) {
case 'Point':
case 'PointSet':
geometry = loader.parse( obj.geometry );
if ( geometry.attributes.hasOwnProperty( 'color' ) ) {
material = new PointsMaterial( { vertexColors: true, sizeAttenuation: false, size: 2 } );
} else {
_color = attributes.drawColor;
color = new Color( _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 );
material = new PointsMaterial( { color: color, sizeAttenuation: false, size: 2 } );
}
material = this._compareMaterials( material );
const points = new Points( geometry, material );
points.userData[ 'attributes' ] = attributes;
points.userData[ 'objectType' ] = obj.objectType;
if ( attributes.name ) {
points.name = attributes.name;
}
return points;
case 'Mesh':
case 'Extrusion':
case 'SubD':
case 'Brep':
if ( obj.geometry === null ) return;
geometry = loader.parse( obj.geometry );
if ( geometry.attributes.hasOwnProperty( 'color' ) ) {
mat.vertexColors = true;
}
if ( mat === null ) {
mat = this._createMaterial();
mat = this._compareMaterials( mat );
}
const mesh = new Mesh( geometry, mat );
mesh.castShadow = attributes.castsShadows;
mesh.receiveShadow = attributes.receivesShadows;
mesh.userData[ 'attributes' ] = attributes;
mesh.userData[ 'objectType' ] = obj.objectType;
if ( attributes.name ) {
mesh.name = attributes.name;
}
return mesh;
case 'Curve':
geometry = loader.parse( obj.geometry );
_color = attributes.drawColor;
color = new Color( _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 );
material = new LineBasicMaterial( { color: color } );
material = this._compareMaterials( material );
const lines = new Line( geometry, material );
lines.userData[ 'attributes' ] = attributes;
lines.userData[ 'objectType' ] = obj.objectType;
if ( attributes.name ) {
lines.name = attributes.name;
}
return lines;
case 'TextDot':
geometry = obj.geometry;
const ctx = document.createElement( 'canvas' ).getContext( '2d' );
const font = `${geometry.fontHeight}px ${geometry.fontFace}`;
ctx.font = font;
const width = ctx.measureText( geometry.text ).width + 10;
const height = geometry.fontHeight + 10;
const r = window.devicePixelRatio;
ctx.canvas.width = width * r;
ctx.canvas.height = height * r;
ctx.canvas.style.width = width + 'px';
ctx.canvas.style.height = height + 'px';
ctx.setTransform( r, 0, 0, r, 0, 0 );
ctx.font = font;
ctx.textBaseline = 'middle';
ctx.textAlign = 'center';
color = attributes.drawColor;
ctx.fillStyle = `rgba(${color.r},${color.g},${color.b},${color.a})`;
ctx.fillRect( 0, 0, width, height );
ctx.fillStyle = 'white';
ctx.fillText( geometry.text, width / 2, height / 2 );
const texture = new CanvasTexture( ctx.canvas );
texture.minFilter = LinearFilter;
texture.wrapS = ClampToEdgeWrapping;
texture.wrapT = ClampToEdgeWrapping;
material = new SpriteMaterial( { map: texture, depthTest: false } );
const sprite = new Sprite( material );
sprite.position.set( geometry.point[ 0 ], geometry.point[ 1 ], geometry.point[ 2 ] );
sprite.scale.set( width / 10, height / 10, 1.0 );
sprite.userData[ 'attributes' ] = attributes;
sprite.userData[ 'objectType' ] = obj.objectType;
if ( attributes.name ) {
sprite.name = attributes.name;
}
return sprite;
case 'Light':
geometry = obj.geometry;
let light;
switch ( geometry.lightStyle.name ) {
case 'LightStyle_WorldPoint':
light = new PointLight();
light.castShadow = attributes.castsShadows;
light.position.set( geometry.location[ 0 ], geometry.location[ 1 ], geometry.location[ 2 ] );
light.shadow.normalBias = 0.1;
break;
case 'LightStyle_WorldSpot':
light = new SpotLight();
light.castShadow = attributes.castsShadows;
light.position.set( geometry.location[ 0 ], geometry.location[ 1 ], geometry.location[ 2 ] );
light.target.position.set( geometry.direction[ 0 ], geometry.direction[ 1 ], geometry.direction[ 2 ] );
light.angle = geometry.spotAngleRadians;
light.shadow.normalBias = 0.1;
break;
case 'LightStyle_WorldRectangular':
light = new RectAreaLight();
const width = Math.abs( geometry.width[ 2 ] );
const height = Math.abs( geometry.length[ 0 ] );
light.position.set( geometry.location[ 0 ] - ( height / 2 ), geometry.location[ 1 ], geometry.location[ 2 ] - ( width / 2 ) );
light.height = height;
light.width = width;
light.lookAt( new Vector3( geometry.direction[ 0 ], geometry.direction[ 1 ], geometry.direction[ 2 ] ) );
break;
case 'LightStyle_WorldDirectional':
light = new DirectionalLight();
light.castShadow = attributes.castsShadows;
light.position.set( geometry.location[ 0 ], geometry.location[ 1 ], geometry.location[ 2 ] );
light.target.position.set( geometry.direction[ 0 ], geometry.direction[ 1 ], geometry.direction[ 2 ] );
light.shadow.normalBias = 0.1;
break;
case 'LightStyle_WorldLinear':
// not conversion exists, warning has already been printed to the console
break;
default:
break;
}
if ( light ) {
light.intensity = geometry.intensity;
_color = geometry.diffuse;
color = new Color( _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 );
light.color = color;
light.userData[ 'attributes' ] = attributes;
light.userData[ 'objectType' ] = obj.objectType;
}
return light;
}
}
_initLibrary() {
if ( ! this.libraryPending ) {
// Load rhino3dm wrapper.
const jsLoader = new FileLoader( this.manager );
jsLoader.setPath( this.libraryPath );
const jsContent = new Promise( ( resolve, reject ) => {
jsLoader.load( 'rhino3dm.js', resolve, undefined, reject );
} );
// Load rhino3dm WASM binary.
const binaryLoader = new FileLoader( this.manager );
binaryLoader.setPath( this.libraryPath );
binaryLoader.setResponseType( 'arraybuffer' );
const binaryContent = new Promise( ( resolve, reject ) => {
binaryLoader.load( 'rhino3dm.wasm', resolve, undefined, reject );
} );
this.libraryPending = Promise.all( [ jsContent, binaryContent ] )
.then( ( [ jsContent, binaryContent ] ) => {
//this.libraryBinary = binaryContent;
this.libraryConfig.wasmBinary = binaryContent;
const fn = Rhino3dmWorker.toString();
const body = [
'/* rhino3dm.js */',
jsContent,
'/* worker */',
fn.substring( fn.indexOf( '{' ) + 1, fn.lastIndexOf( '}' ) )
].join( '\n' );
this.workerSourceURL = URL.createObjectURL( new Blob( [ body ] ) );
} );
}
return this.libraryPending;
}
_getWorker( taskCost ) {
return this._initLibrary().then( () => {
if ( this.workerPool.length < this.workerLimit ) {
const worker = new Worker( this.workerSourceURL );
worker._callbacks = {};
worker._taskCosts = {};
worker._taskLoad = 0;
worker.postMessage( {
type: 'init',
libraryConfig: this.libraryConfig
} );
worker.onmessage = e => {
const message = e.data;
switch ( message.type ) {
case 'warning':
this.warnings.push( message.data );
console.warn( message.data );
break;
case 'decode':
worker._callbacks[ message.id ].resolve( message );
break;
case 'error':
worker._callbacks[ message.id ].reject( message );
break;
default:
console.error( 'THREE.Rhino3dmLoader: Unexpected message, "' + message.type + '"' );
}
};
this.workerPool.push( worker );
} else {
this.workerPool.sort( function ( a, b ) {
return a._taskLoad > b._taskLoad ? - 1 : 1;
} );
}
const worker = this.workerPool[ this.workerPool.length - 1 ];
worker._taskLoad += taskCost;
return worker;
} );
}
_releaseTask( worker, taskID ) {
worker._taskLoad -= worker._taskCosts[ taskID ];
delete worker._callbacks[ taskID ];
delete worker._taskCosts[ taskID ];
}
dispose() {
for ( let i = 0; i < this.workerPool.length; ++ i ) {
this.workerPool[ i ].terminate();
}
this.workerPool.length = 0;
return this;
}
}
/* WEB WORKER */
function Rhino3dmWorker() {
let libraryPending;
let libraryConfig;
let rhino;
let taskID;
onmessage = function ( e ) {
const message = e.data;
switch ( message.type ) {
case 'init':
// console.log(message)
libraryConfig = message.libraryConfig;
const wasmBinary = libraryConfig.wasmBinary;
let RhinoModule;
libraryPending = new Promise( function ( resolve ) {
/* Like Basis Loader */
RhinoModule = { wasmBinary, onRuntimeInitialized: resolve };
rhino3dm( RhinoModule ); // eslint-disable-line no-undef
} ).then( () => {
rhino = RhinoModule;
} );
break;
case 'decode':
taskID = message.id;
const buffer = message.buffer;
libraryPending.then( () => {
try {
const data = decodeObjects( rhino, buffer );
self.postMessage( { type: 'decode', id: message.id, data } );
} catch ( error ) {
self.postMessage( { type: 'error', id: message.id, error } );
}
} );
break;
}
};
function decodeObjects( rhino, buffer ) {
const arr = new Uint8Array( buffer );
const doc = rhino.File3dm.fromByteArray( arr );
const objects = [];
const materials = [];
const layers = [];
const views = [];
const namedViews = [];
const groups = [];
const strings = [];
//Handle objects
const objs = doc.objects();
const cnt = objs.count;
for ( let i = 0; i < cnt; i ++ ) {
const _object = objs.get( i );
const object = extractObjectData( _object, doc );
_object.delete();
if ( object ) {
objects.push( object );
}
}
// Handle instance definitions
// console.log( `Instance Definitions Count: ${doc.instanceDefinitions().count()}` );
for ( let i = 0; i < doc.instanceDefinitions().count(); i ++ ) {
const idef = doc.instanceDefinitions().get( i );
const idefAttributes = extractProperties( idef );
idefAttributes.objectIds = idef.getObjectIds();
objects.push( { geometry: null, attributes: idefAttributes, objectType: 'InstanceDefinition' } );
}
// Handle materials
const textureTypes = [
// rhino.TextureType.Bitmap,
rhino.TextureType.Diffuse,
rhino.TextureType.Bump,
rhino.TextureType.Transparency,
rhino.TextureType.Opacity,
rhino.TextureType.Emap
];
const pbrTextureTypes = [
rhino.TextureType.PBR_BaseColor,
rhino.TextureType.PBR_Subsurface,
rhino.TextureType.PBR_SubsurfaceScattering,
rhino.TextureType.PBR_SubsurfaceScatteringRadius,
rhino.TextureType.PBR_Metallic,
rhino.TextureType.PBR_Specular,
rhino.TextureType.PBR_SpecularTint,
rhino.TextureType.PBR_Roughness,
rhino.TextureType.PBR_Anisotropic,
rhino.TextureType.PBR_Anisotropic_Rotation,
rhino.TextureType.PBR_Sheen,
rhino.TextureType.PBR_SheenTint,
rhino.TextureType.PBR_Clearcoat,
rhino.TextureType.PBR_ClearcoatBump,
rhino.TextureType.PBR_ClearcoatRoughness,
rhino.TextureType.PBR_OpacityIor,
rhino.TextureType.PBR_OpacityRoughness,
rhino.TextureType.PBR_Emission,
rhino.TextureType.PBR_AmbientOcclusion,
rhino.TextureType.PBR_Displacement
];
for ( let i = 0; i < doc.materials().count(); i ++ ) {
const _material = doc.materials().get( i );
const _pbrMaterial = _material.physicallyBased();
let material = extractProperties( _material );
const textures = [];
for ( let j = 0; j < textureTypes.length; j ++ ) {
const _texture = _material.getTexture( textureTypes[ j ] );
if ( _texture ) {
let textureType = textureTypes[ j ].constructor.name;
textureType = textureType.substring( 12, textureType.length );
const texture = { type: textureType };
const image = doc.getEmbeddedFileAsBase64( _texture.fileName );
texture.wrapU = _texture.wrapU;
texture.wrapV = _texture.wrapV;
texture.wrapW = _texture.wrapW;
const uvw = _texture.uvwTransform.toFloatArray( true );
texture.repeat = [ uvw[ 0 ], uvw[ 5 ] ];
if ( image ) {
texture.image = 'data:image/png;base64,' + image;
} else {
self.postMessage( { type: 'warning', id: taskID, data: {
message: `THREE.3DMLoader: Image for ${textureType} texture not embedded in file.`,
type: 'missing resource'
}
} );
texture.image = null;
}
textures.push( texture );
_texture.delete();
}
}
material.textures = textures;
if ( _pbrMaterial.supported ) {
for ( let j = 0; j < pbrTextureTypes.length; j ++ ) {
const _texture = _material.getTexture( pbrTextureTypes[ j ] );
if ( _texture ) {
const image = doc.getEmbeddedFileAsBase64( _texture.fileName );
let textureType = pbrTextureTypes[ j ].constructor.name;
textureType = textureType.substring( 12, textureType.length );
const texture = { type: textureType, image: 'data:image/png;base64,' + image };
textures.push( texture );
_texture.delete();
}
}
const pbMaterialProperties = extractProperties( _material.physicallyBased() );
material = Object.assign( pbMaterialProperties, material );
}
materials.push( material );
_material.delete();
_pbrMaterial.delete();
}
// Handle layers
for ( let i = 0; i < doc.layers().count(); i ++ ) {
const _layer = doc.layers().get( i );
const layer = extractProperties( _layer );
layers.push( layer );
_layer.delete();
}
// Handle views
for ( let i = 0; i < doc.views().count(); i ++ ) {
const _view = doc.views().get( i );
const view = extractProperties( _view );
views.push( view );
_view.delete();
}
// Handle named views
for ( let i = 0; i < doc.namedViews().count(); i ++ ) {
const _namedView = doc.namedViews().get( i );
const namedView = extractProperties( _namedView );
namedViews.push( namedView );
_namedView.delete();
}
// Handle groups
for ( let i = 0; i < doc.groups().count(); i ++ ) {
const _group = doc.groups().get( i );
const group = extractProperties( _group );
groups.push( group );
_group.delete();
}
// Handle settings
const settings = extractProperties( doc.settings() );
//TODO: Handle other document stuff like dimstyles, instance definitions, bitmaps etc.
// Handle dimstyles
// console.log( `Dimstyle Count: ${doc.dimstyles().count()}` );
// Handle bitmaps
// console.log( `Bitmap Count: ${doc.bitmaps().count()}` );
// Handle strings
// console.log( `Document Strings Count: ${doc.strings().count()}` );
// Note: doc.strings().documentUserTextCount() counts any doc.strings defined in a section
//console.log( `Document User Text Count: ${doc.strings().documentUserTextCount()}` );
const strings_count = doc.strings().count();
for ( let i = 0; i < strings_count; i ++ ) {
strings.push( doc.strings().get( i ) );
}
doc.delete();
return { objects, materials, layers, views, namedViews, groups, strings, settings };
}
function extractObjectData( object, doc ) {
const _geometry = object.geometry();
const _attributes = object.attributes();
let objectType = _geometry.objectType;
let geometry, attributes, position, data, mesh;
// skip instance definition objects
//if( _attributes.isInstanceDefinitionObject ) { continue; }
// TODO: handle other geometry types
switch ( objectType ) {
case rhino.ObjectType.Curve:
const pts = curveToPoints( _geometry, 100 );
position = {};
attributes = {};
data = {};
position.itemSize = 3;
position.type = 'Float32Array';
position.array = [];
for ( let j = 0; j < pts.length; j ++ ) {
position.array.push( pts[ j ][ 0 ] );
position.array.push( pts[ j ][ 1 ] );
position.array.push( pts[ j ][ 2 ] );
}
attributes.position = position;
data.attributes = attributes;
geometry = { data };
break;
case rhino.ObjectType.Point:
const pt = _geometry.location;
position = {};
const color = {};
attributes = {};
data = {};
position.itemSize = 3;
position.type = 'Float32Array';
position.array = [ pt[ 0 ], pt[ 1 ], pt[ 2 ] ];
const _color = _attributes.drawColor( doc );
color.itemSize = 3;
color.type = 'Float32Array';
color.array = [ _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 ];
attributes.position = position;
attributes.color = color;
data.attributes = attributes;
geometry = { data };
break;
case rhino.ObjectType.PointSet:
case rhino.ObjectType.Mesh:
geometry = _geometry.toThreejsJSON();
break;
case rhino.ObjectType.Brep:
const faces = _geometry.faces();
mesh = new rhino.Mesh();
for ( let faceIndex = 0; faceIndex < faces.count; faceIndex ++ ) {
const face = faces.get( faceIndex );
const _mesh = face.getMesh( rhino.MeshType.Any );
if ( _mesh ) {
mesh.append( _mesh );
_mesh.delete();
}
face.delete();
}
if ( mesh.faces().count > 0 ) {
mesh.compact();
geometry = mesh.toThreejsJSON();
faces.delete();
}
mesh.delete();
break;
case rhino.ObjectType.Extrusion:
mesh = _geometry.getMesh( rhino.MeshType.Any );
if ( mesh ) {
geometry = mesh.toThreejsJSON();
mesh.delete();
}
break;
case rhino.ObjectType.TextDot:
geometry = extractProperties( _geometry );
break;
case rhino.ObjectType.Light:
geometry = extractProperties( _geometry );
if ( geometry.lightStyle.name === 'LightStyle_WorldLinear' ) {
self.postMessage( { type: 'warning', id: taskID, data: {
message: `THREE.3DMLoader: No conversion exists for ${objectType.constructor.name} ${geometry.lightStyle.name}`,
type: 'no conversion',
guid: _attributes.id
}
} );
}
break;
case rhino.ObjectType.InstanceReference:
geometry = extractProperties( _geometry );
geometry.xform = extractProperties( _geometry.xform );
geometry.xform.array = _geometry.xform.toFloatArray( true );
break;
case rhino.ObjectType.SubD:
// TODO: precalculate resulting vertices and faces and warn on excessive results
_geometry.subdivide( 3 );
mesh = rhino.Mesh.createFromSubDControlNet( _geometry );
if ( mesh ) {
geometry = mesh.toThreejsJSON();
mesh.delete();
}
break;
/*
case rhino.ObjectType.Annotation:
case rhino.ObjectType.Hatch:
case rhino.ObjectType.ClipPlane:
*/
default:
self.postMessage( { type: 'warning', id: taskID, data: {
message: `THREE.3DMLoader: Conversion not implemented for ${objectType.constructor.name}`,
type: 'not implemented',
guid: _attributes.id
}
} );
break;
}
if ( geometry ) {
attributes = extractProperties( _attributes );
attributes.geometry = extractProperties( _geometry );
if ( _attributes.groupCount > 0 ) {
attributes.groupIds = _attributes.getGroupList();
}
if ( _attributes.userStringCount > 0 ) {
attributes.userStrings = _attributes.getUserStrings();
}
if ( _geometry.userStringCount > 0 ) {
attributes.geometry.userStrings = _geometry.getUserStrings();
}
attributes.drawColor = _attributes.drawColor( doc );
objectType = objectType.constructor.name;
objectType = objectType.substring( 11, objectType.length );
return { geometry, attributes, objectType };
} else {
self.postMessage( { type: 'warning', id: taskID, data: {
message: `THREE.3DMLoader: ${objectType.constructor.name} has no associated mesh geometry.`,
type: 'missing mesh',
guid: _attributes.id
}
} );
}
}
function extractProperties( object ) {
const result = {};
for ( const property in object ) {
const value = object[ property ];
if ( typeof value !== 'function' ) {
if ( typeof value === 'object' && value !== null && value.hasOwnProperty( 'constructor' ) ) {
result[ property ] = { name: value.constructor.name, value: value.value };
} else {
result[ property ] = value;
}
} else {
// these are functions that could be called to extract more data.
//console.log( `${property}: ${object[ property ].constructor.name}` );
}
}
return result;
}
function curveToPoints( curve, pointLimit ) {
let pointCount = pointLimit;
let rc = [];
const ts = [];
if ( curve instanceof rhino.LineCurve ) {
return [ curve.pointAtStart, curve.pointAtEnd ];
}
if ( curve instanceof rhino.PolylineCurve ) {
pointCount = curve.pointCount;
for ( let i = 0; i < pointCount; i ++ ) {
rc.push( curve.point( i ) );
}
return rc;
}
if ( curve instanceof rhino.PolyCurve ) {
const segmentCount = curve.segmentCount;
for ( let i = 0; i < segmentCount; i ++ ) {
const segment = curve.segmentCurve( i );
const segmentArray = curveToPoints( segment, pointCount );
rc = rc.concat( segmentArray );
segment.delete();
}
return rc;
}
if ( curve instanceof rhino.ArcCurve ) {
pointCount = Math.floor( curve.angleDegrees / 5 );
pointCount = pointCount < 2 ? 2 : pointCount;
// alternative to this hardcoded version: https://stackoverflow.com/a/18499923/2179399
}
if ( curve instanceof rhino.NurbsCurve && curve.degree === 1 ) {
const pLine = curve.tryGetPolyline();
for ( let i = 0; i < pLine.count; i ++ ) {
rc.push( pLine.get( i ) );
}
pLine.delete();
return rc;
}
const domain = curve.domain;
const divisions = pointCount - 1.0;
for ( let j = 0; j < pointCount; j ++ ) {
const t = domain[ 0 ] + ( j / divisions ) * ( domain[ 1 ] - domain[ 0 ] );
if ( t === domain[ 0 ] || t === domain[ 1 ] ) {
ts.push( t );
continue;
}
const tan = curve.tangentAt( t );
const prevTan = curve.tangentAt( ts.slice( - 1 )[ 0 ] );
// Duplicated from THREE.Vector3
// How to pass imports to worker?
const tS = tan[ 0 ] * tan[ 0 ] + tan[ 1 ] * tan[ 1 ] + tan[ 2 ] * tan[ 2 ];
const ptS = prevTan[ 0 ] * prevTan[ 0 ] + prevTan[ 1 ] * prevTan[ 1 ] + prevTan[ 2 ] * prevTan[ 2 ];
const denominator = Math.sqrt( tS * ptS );
let angle;
if ( denominator === 0 ) {
angle = Math.PI / 2;
} else {
const theta = ( tan.x * prevTan.x + tan.y * prevTan.y + tan.z * prevTan.z ) / denominator;
angle = Math.acos( Math.max( - 1, Math.min( 1, theta ) ) );
}
if ( angle < 0.1 ) continue;
ts.push( t );
}
rc = ts.map( t => curve.pointAt( t ) );
return rc;
}
}
export { Rhino3dmLoader };
