Doodle3D-Slicer/three.js-master/examples/js/wip/ProxyGeometry.js
2015-06-12 15:58:26 +02:00

756 lines
17 KiB
JavaScript
Executable File

/**
* @author mrdoob / http://mrdoob.com/
* @author kile / http://kile.stravaganza.org/
* @author alteredq / http://alteredqualia.com/
* @author mikael emtinger / http://gomo.se/
* @author zz85 / http://www.lab4games.net/zz85/blog
* @author bhouston / http://exocortex.com
* @author jbaicoianu / http://baicoianu.com
*/
THREE.ProxyGeometry = function ( ) {
THREE.BufferGeometry.call( this );
this.addEventListener( 'allocate', this.onGeometryAllocate);
// TODO - implement as BufferGeometry attributes
this.morphTargets = [];
this.morphColors = [];
};
THREE.ProxyGeometry.prototype = Object.create( THREE.IndexedGeometry2.prototype );
THREE.ProxyGeometry.prototype.constructor = THREE.ProxyGeometry;
Object.defineProperties(THREE.ProxyGeometry.prototype, {
vertices: {
enumerable: true,
configurable: true,
get: function() { return this.createVertexProxies(); }
},
faces: {
enumerable: true,
get: function() { return this.createFaceProxies() }
},
faceVertexUvs: {
enumerable: true,
get: function() { return this.createUvProxies() }
},
colors: {
enumerable: true,
get: function() { return this.createColorProxies() }
},
skinIndices: {
enumerable: true,
get: function() { return this.createSkinIndexProxies() }
},
skinWeights: {
enumerable: true,
get: function() { return this.createSkinWeightProxies() }
},
// TODO - fill in additional proxies:
// - morphColors
// - morphNormals
// - morphTargets
verticesNeedUpdate: {
enumerable: true,
get: function() { if (this.attributes[ 'position' ]) return this.attributes[ 'position' ].needsUpdate; },
set: function(v) { if (this.attributes[ 'position' ]) this.attributes[ 'position' ].needsUpdate = v; }
},
colorsNeedUpdate: {
enumerable: true,
get: function() { if (this.attributes[ 'color' ]) return this.attributes[ 'color' ].needsUpdate; },
set: function(v) { if (this.attributes[ 'color' ]) this.attributes[ 'color' ].needsUpdate = v; }
},
normalsNeedUpdate: {
enumerable: true,
get: function() { if (this.attributes[ 'normal' ]) return this.attributes[ 'normal' ].needsUpdate; },
set: function(v) { if (this.attributes[ 'normal' ]) this.attributes[ 'normal' ].needsUpdate = v; }
},
});
THREE.ProxyGeometry.prototype.createVertexProxies = function(values) {
if (!this.hasOwnProperty('vertices')) {
// Replace the prototype getter with a local array property
Object.defineProperty( this, "vertices", { value: [], writable: true } );
} else {
// Start with a new, empty array
this.vertices = [];
}
// If the attribute buffer has already been populated, set up proxy objects
this.populateProxyFromBuffer(this.vertices, "position", THREE.ProxyVector3, 3);
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0; i < values.length; i ++) {
this.vertices[i].copy(values[i]);
}
}
// Return a reference to the newly-created array
return this.vertices;
}
THREE.ProxyGeometry.prototype.createFaceProxies = function(values) {
if (!this.hasOwnProperty("faces")) {
// Replace the prototype getter with a local array property
Object.defineProperty( this, "faces", { value: [], writable: true } );
} else {
// Start with a new, empty array
this.faces = [];
}
// If the attribute buffer has already been populated, set up proxy objects
var faces = this.faces,
indexarray = false,
positionarray = false,
normalarray = false,
colorarray = false,
tangentarray = false;
if ( this.attributes[ 'index' ] ) {
indexarray = this.attributes[ 'index' ].array;
}
if ( this.attributes[ 'position' ] ) {
positionarray = this.attributes[ 'position' ].array;
}
if (this.attributes[ 'normal' ]) {
normalarray = this.attributes[ 'normal' ].array;
}
if (this.attributes[ 'color' ]) {
colorarray = this.attributes[ 'color' ].array;
}
if (this.attributes[ 'tangent' ]) {
tangentarray = this.attributes[ 'tangent' ].array;
}
// TODO - this should be accomplished using "virtual" functions on various classes (IndexedGeometry, SmoothGeometry, etc)
if (indexarray) {
for ( var i = 0, l = indexarray.length / 3; i < l; i ++ ) {
var o = i * 3;
var face = new THREE.ProxyFace3( indexarray, i * 3 );
faces.push(face);
}
} else if (positionarray) {
for ( var i = 0, l = positionarray.length / 3; i < l; i += 3 ) {
var o = i * 3;
var v1 = i, v2 = i + 1, v3 = i + 2;
var face = new THREE.ProxyFace3( v1, v2, v3 );
faces.push(face);
}
}
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0, l = values.length; i < l; i ++) {
var f = faces[i],
v = values[i];
f.a = v.a;
f.b = v.b;
f.c = v.c;
}
}
if (normalarray) {
this.createFaceVertexNormalProxies(values);
}
if (colorarray) {
this.createFaceVertexColorProxies(values);
}
if (tangentarray) {
this.createFaceVertexTangentProxies(values);
}
// Return a reference to the newly-created array
return this.faces;
}
THREE.ProxyGeometry.prototype.createFaceVertexNormalProxies = function(values) {
if ( this.attributes[ 'normal' ] && this.attributes[ 'normal' ].array ) {
var normalarray = this.attributes[ 'normal' ].array;
for (var i = 0, l = this.faces.length; i < l; i ++) {
var f = this.faces[i];
f.vertexNormals = [
new THREE.ProxyVector3(normalarray, f.a * 3),
new THREE.ProxyVector3(normalarray, f.b * 3),
new THREE.ProxyVector3(normalarray, f.c * 3),
];
f.normal = new THREE.MultiVector3(f.vertexNormals);
}
}
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0, l = values.length; i < l; i ++) {
var f = this.faces[i],
v = values[i];
if (v.vertexNormals.length > 0) {
for (var j = 0, l2 = f.vertexNormals.length; j < l2; j ++) {
f.vertexNormals[j].copy(v.vertexNormals[j]);
}
} else if (v.normal) {
f.normal.copy(v.normal);
}
}
}
}
THREE.ProxyGeometry.prototype.createFaceVertexColorProxies = function(values) {
if ( this.attributes[ 'color' ] && this.attributes[ 'color' ].array ) {
var colorarray = this.attributes[ 'color' ].array;
for (var i = 0, l = this.faces.length; i < l; i ++) {
var f = this.faces[i];
if ( this.attributes[ 'index' ] ) {
f.vertexColors = [
new THREE.ProxyColor(colorarray, f.a * 3),
new THREE.ProxyColor(colorarray, f.b * 3),
new THREE.ProxyColor(colorarray, f.c * 3),
];
} else {
var o = i * 9;
f.vertexColors = [
new THREE.ProxyColor(colorarray, o),
new THREE.ProxyColor(colorarray, o + 3),
new THREE.ProxyColor(colorarray, o + 6),
];
}
f.color = new THREE.MultiColor(f.vertexColors);
}
}
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0, l = values.length; i < l; i ++) {
var f = this.faces[i],
v = values[i];
for (var j = 0, l2 = f.vertexColors.length; j < l2; j ++) {
if (v.vertexColors.length > 0) {
f.vertexColors[j].copy(v.vertexColors[j]);
} else if (v.color) {
f.color.copy(v.color);
}
}
}
}
}
THREE.ProxyGeometry.prototype.createFaceVertexTangentProxies = function(values) {
if ( this.attributes[ 'tangent' ] && this.attributes[ 'tangent' ].array ) {
var tangentarray = this.attributes[ 'tangent' ].array;
for (var i = 0, l = this.faces.length; i < l; i ++) {
var f = this.faces[i];
f.vertexTangents = [
new THREE.ProxyVector3(tangentarray, f.a * 3),
new THREE.ProxyVector3(tangentarray, f.b * 3),
new THREE.ProxyVector3(tangentarray, f.c * 3),
];
}
}
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0, l = values.length; i < l; i ++) {
var f = this.faces[i],
v = values[i];
if (v.vertexTangents.length > 0) {
for (var j = 0, l2 = f.vertexTangents.length; j < l2; j ++) {
f.vertexTangents[j].copy(v.vertexTangents[j]);
}
}
}
}
}
THREE.ProxyGeometry.prototype.createUvProxies = function(values) {
// Replace the prototype getter with a local array property
if (!this.hasOwnProperty("faceVertexUvs")) {
Object.defineProperty( this, "faceVertexUvs", { value: [[]], writable: true } );
} else {
this.faceVertexUvs = [[]];
}
// If the attribute buffer has already been populated, set up proxy objects
if ( this.attributes[ 'uv' ] && this.attributes[ 'uv' ].array ) {
var faces = this.faces;
var uvarray = this.attributes[ 'uv' ].array;
for (var i = 0, l = faces.length; i < l; i ++) {
var f = faces[i];
this.faceVertexUvs[0][i] = [];
if ( this.attributes[ 'index' ] ) {
this.faceVertexUvs[0][i][0] = new THREE.ProxyVector2(uvarray, f.a * 2);
this.faceVertexUvs[0][i][1] = new THREE.ProxyVector2(uvarray, f.b * 2);
this.faceVertexUvs[0][i][2] = new THREE.ProxyVector2(uvarray, f.c * 2);
} else {
var o = i * 6;
this.faceVertexUvs[0][i][0] = new THREE.ProxyVector2(uvarray, o);
this.faceVertexUvs[0][i][1] = new THREE.ProxyVector2(uvarray, o + 2);
this.faceVertexUvs[0][i][2] = new THREE.ProxyVector2(uvarray, o + 4);
}
}
}
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0, l = values.length; i < l; i ++) {
for (var j = 0, l2 = values[i].length; j < l2; j ++) {
var uv = values[i][j];
this.faceVertexUvs[0][i][j].copy(uv);
}
}
}
// Return a reference to the newly-created array
return this.faceVertexUvs;
}
THREE.ProxyGeometry.prototype.createSkinIndexProxies = function(values) {
// Replace the prototype getter with a local array property
if (!this.hasOwnProperty('skinIndices')) {
Object.defineProperty( this, "skinIndices", { value: [], writable: true } );
} else {
this.skinIndices = [];
}
// If the attribute buffer has already been populated, set up proxy objects
this.populateProxyFromBuffer(this.skinIndices, "skinIndex", THREE.ProxyVector4, 4);
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0; i < values.length; i ++) {
this.skinIndices[i].copy(values[i]);
}
}
// Return a reference to the newly-created array
return this.skinIndices;
}
THREE.ProxyGeometry.prototype.createSkinWeightProxies = function(values) {
// Replace the prototype getter with a local array property
if (!this.hasOwnProperty('skinWeights')) {
Object.defineProperty( this, "skinWeights", { value: [], writable: true } );
} else {
this.skinWeights = [];
}
// If the attribute buffer has already been populated, set up proxy objects
this.populateProxyFromBuffer(this.skinWeights, "skinWeight", THREE.ProxyVector4, 4);
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0; i < values.length; i ++) {
this.skinWeights[i].copy(values[i]);
}
}
// Return a reference to the newly-created array
return this.skinWeights;
}
THREE.ProxyGeometry.prototype.createColorProxies = function(values) {
// Replace the prototype getter with a local array property
if (!this.hasOwnProperty('colors')) {
Object.defineProperty( this, "colors", { value: [], writable: true } );
} else {
this.colors = [];
}
// If the attribute buffer has already been populated, set up proxy objects
this.populateProxyFromBuffer(this.colors, "color", THREE.ProxyColor, 3);
// If values were passed in, store them in the buffer via the proxy objects
if (values) {
for (var i = 0; i < values.length; i ++) {
this.colors[i].copy(values[i]);
}
}
// Return a reference to the newly-created array
return this.colors;
}
THREE.ProxyGeometry.prototype.populateProxyFromBuffer = function(attr, buffername, proxytype, itemsize, offset, count) {
if ( this.attributes[ buffername ] && this.attributes[ buffername ].array ) {
var array = this.attributes[ buffername ].array;
var size = itemsize || this.attributes[ buffername ].itemSize;
var start = offset || 0;
count = count || (array.length / size - start);
for ( var i = start, l = start + count; i < l; i ++ ) {
attr.push( new proxytype( array, i * size ) );
}
}
}
/*
* Checks for duplicate vertices with hashmap.
* Duplicated vertices are removed
* and faces' vertices are updated.
*/
THREE.ProxyGeometry.prototype.mergeVertices = function () {
var verticesMap = {}; // Hashmap for looking up vertice by position coordinates (and making sure they are unique)
var unique = [], changes = [];
var v, key;
var precisionPoints = 4; // number of decimal points, eg. 4 for epsilon of 0.0001
var precision = Math.pow( 10, precisionPoints );
var i,il, face;
var indices, k, j, jl, u;
for ( i = 0, il = this.vertices.length; i < il; i ++ ) {
v = this.vertices[ i ];
key = Math.round( v.x * precision ) + '_' + Math.round( v.y * precision ) + '_' + Math.round( v.z * precision );
if ( verticesMap[ key ] === undefined ) {
verticesMap[ key ] = i;
unique.push( this.vertices[ i ] );
changes[ i ] = unique.length - 1;
} else {
//console.log('Duplicate vertex found. ', i, ' could be using ', verticesMap[key]);
changes[ i ] = changes[ verticesMap[ key ] ];
}
};
// if faces are completely degenerate after merging vertices, we
// have to remove them from the geometry.
var faceIndicesToRemove = [];
for ( i = 0, il = this.faces.length; i < il; i ++ ) {
face = this.faces[ i ];
face.a = changes[ face.a ];
face.b = changes[ face.b ];
face.c = changes[ face.c ];
indices = [ face.a, face.b, face.c ];
var dupIndex = -1;
// if any duplicate vertices are found in a Face3
// we have to remove the face as nothing can be saved
for ( var n = 0; n < 3; n ++ ) {
if ( indices[ n ] == indices[ ( n + 1 ) % 3 ] ) {
dupIndex = n;
faceIndicesToRemove.push( i );
break;
}
}
}
for ( i = faceIndicesToRemove.length - 1; i >= 0; i -- ) {
var idx = faceIndicesToRemove[ i ];
this.faces.splice( idx, 1 );
for ( j = 0, jl = this.faceVertexUvs.length; j < jl; j ++ ) {
this.faceVertexUvs[ j ].splice( idx, 1 );
}
}
// Use unique set of vertices
var diff = this.vertices.length - unique.length;
this.vertices = unique;
return diff;
}
THREE.ProxyGeometry.prototype.onGeometryAllocate = function (ev) {
// Prevent allocate event listener from firing multiple times
this.removeEventListener( 'allocate', this.onGeometryAllocate);
if (this.hasOwnProperty('vertices')) {
var attr = new THREE.Float32Attribute(this.vertices.length, 3);
this.addAttribute('position', attr);
this.createVertexProxies(this.vertices);
}
if (this.hasOwnProperty('faces')) {
var idxattr = new THREE.Uint16Attribute(this.faces.length, 3);
this.addAttribute('index', idxattr);
if (this.faces.length > 0) {
var hasnormals = (this.hasOwnProperty('normals') || this.faces[0].normal || this.faces[0].vertexNormals.length > 0);
var hascolors = (this.hasOwnProperty('colors') || this.faces[0].color || this.faces[0].vertexColors.length > 0);
var hastangents = (this.faces[0].vertexTangents.length > 0);
if (hasnormals) {
var normalattr = new THREE.Float32Attribute(this.vertices.length, 3);
this.addAttribute('normal', normalattr);
}
if (hascolors) {
var colorattr = new THREE.Float32Attribute(this.faces.length * 3, 3);
this.addAttribute('color', colorattr);
}
if (hastangents) {
var tangentattr = new THREE.Float32Attribute(this.faces.length * 3, 3);
this.addAttribute('tangent', tangentattr);
}
}
this.createFaceProxies(this.faces);
}
if (this.hasOwnProperty('faceVertexUvs')) {
var uvattr = new THREE.Float32Attribute(this.faces.length * 3, 2);
this.addAttribute('uv', uvattr);
this.createUvProxies(this.faceVertexUvs[0]);
}
if (this.hasOwnProperty('skinIndices')) {
var skinidxattr = new THREE.Float32Attribute(this.skinIndices.length, 4);
this.addAttribute('skinIndex', skinidxattr);
this.createSkinIndexProxies(this.skinIndices);
}
if (this.hasOwnProperty('skinWeights')) {
var skinweightattr = new THREE.Float32Attribute(this.skinWeights.length, 4);
this.addAttribute('skinWeight', skinweightattr);
this.createSkinWeightProxies(this.skinWeights);
}
}
THREE.ProxyGeometry.prototype.computeFaceNormals = function() {
this.dispatchEvent( { type: 'allocate' } );
return THREE.BufferGeometry.prototype.computeFaceNormals.call(this);
}
THREE.ProxyGeometry.prototype.computeVertexNormals = function() {
this.dispatchEvent( { type: 'allocate' } );
return THREE.BufferGeometry.prototype.computeVertexNormals.call(this);
}
THREE.ProxyGeometry.prototype.computeTangents = function() {
this.dispatchEvent( { type: 'allocate' } );
var ret = THREE.BufferGeometry.prototype.computeTangents.call(this);
// FIXME - this doesn't work yet
//this.createFaceVertexTangentProxies();
return ret;
}
THREE.ProxyGeometry.prototype.computeBoundingSphere = function() {
this.dispatchEvent( { type: 'allocate' } );
return THREE.BufferGeometry.prototype.computeBoundingSphere.call(this);
}
THREE.ProxyGeometry.prototype.computeBoundingBox = function () {
this.dispatchEvent( { type: 'allocate' } );
return THREE.BufferGeometry.prototype.computeBoundingBox.call(this);
}
THREE.ProxyGeometry.prototype.clone = function () {
var buff = THREE.BufferGeometry.prototype.clone.call(this);
var geo = new THREE.ProxyGeometry();
geo.attributes = buff.attributes;
geo.offsets = buff.offsets;
return geo;
}
THREE.EventDispatcher.prototype.apply( THREE.ProxyGeometry.prototype );
THREE.ProxyGeometryIdCount = 0;