mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-30 01:14:57 +01:00
85 lines
3.1 KiB
JavaScript
85 lines
3.1 KiB
JavaScript
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THREE.Geometry4 = function ( size ) {
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THREE.BufferGeometry.call( this );
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var verticesBuffer = new ArrayBuffer( size * 3 * 4 );
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var normalsBuffer = new ArrayBuffer( size * 3 * 4 );
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var uvsBuffer = new ArrayBuffer( size * 2 * 4 );
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this.attributes[ 'position' ] = { array: new Float32Array( verticesBuffer, 0, size * 3 ), itemSize: 3 };
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this.attributes[ 'normal' ] = { array: new Float32Array( normalsBuffer, 0, size * 3 ), itemSize: 3 };
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this.attributes[ 'uv' ] = { array: new Float32Array( uvsBuffer, 0, size * 2 ), itemSize: 2 };
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this.vertices = new THREE.VectorArrayProxy( this.attributes[ 'position' ] );
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this.normals = new THREE.VectorArrayProxy( this.attributes[ 'normal' ] );
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this.uvs = new THREE.VectorArrayProxy( this.attributes[ 'uv' ] );
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};
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THREE.Geometry4.prototype = Object.create( THREE.BufferGeometry.prototype );
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THREE.Geometry4.prototype.constructor = THREE.Geometry4;
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THREE.VectorArrayProxy = function(attribute) {
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// Acts as a proxy for an array of vectors, by setting up accessors which return THREE.Vector*Proxy objects
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this.attribute = attribute;
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for (var i = 0, l = this.attribute.array.length / this.attribute.itemSize; i < l; i ++) {
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Object.defineProperty(this, i, {
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get: (function(i) { return function() { return this.getValue(i); }})(i),
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set: (function(i) { return function(v) { return this.setValue(i, v); }})(i),
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});
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}
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}
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THREE.VectorArrayProxy.prototype.getValue = function(i) {
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// Allocates a new THREE.Vector2Proxy or THREE.Vector3Proxy depending on the itemSize of our attribute
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var subarray = this.attribute.array.subarray(i * this.attribute.itemSize, (i + 1) * this.attribute.itemSize);
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switch (this.attribute.itemSize) {
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case 2:
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return new THREE.Vector2Proxy(subarray);
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case 3:
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return new THREE.Vector3Proxy(subarray);
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}
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}
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THREE.VectorArrayProxy.prototype.setValue = function(i, v) {
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var vec = this[i];
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vec.copy(v);
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}
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// Vector Proxy Objects
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THREE.Vector2Proxy = function(subarray) {
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this.subarray = subarray;
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}
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THREE.Vector2Proxy.prototype = Object.create( THREE.Vector2.prototype );
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THREE.Vector2Proxy.prototype.constructor = THREE.Vector2Proxy;
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Object.defineProperty(THREE.Vector2Proxy.prototype, 'x', { get: function() { return this.subarray[0]; }, set: function(v) { this.subarray[0] = v; } });
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Object.defineProperty(THREE.Vector2Proxy.prototype, 'y', { get: function() { return this.subarray[1]; }, set: function(v) { this.subarray[1] = v; } });
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THREE.Vector3Proxy = function(subarray) {
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this.subarray = subarray;
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}
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THREE.Vector3Proxy.prototype = Object.create( THREE.Vector3.prototype );
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THREE.Vector3Proxy.prototype.constructor = THREE.Vector3Proxy;
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Object.defineProperty(THREE.Vector3Proxy.prototype, 'x', { get: function() { return this.subarray[0]; }, set: function(v) { this.subarray[0] = v; } });
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Object.defineProperty(THREE.Vector3Proxy.prototype, 'y', { get: function() { return this.subarray[1]; }, set: function(v) { this.subarray[1] = v; } });
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Object.defineProperty(THREE.Vector3Proxy.prototype, 'z', { get: function() { return this.subarray[2]; }, set: function(v) { this.subarray[2] = v; } });
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