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Add arc parameter to TorusGeometry, so it can be used to build half-tori and quarter-tori (e.g. for 90-degree pipe bends).

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hayfield
2011-08-17 15:09:20 +01:00
parent d19bec3b54
commit 5ce5f942cf
1 changed files with 4 additions and 3 deletions
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src/extras/geometries/TorusGeometry.js
+4 -3
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@@ -3,7 +3,7 @@
* based on http://code.google.com/p/away3d/source/browse/trunk/fp10/Away3DLite/src/away3dlite/primitives/Torus.as?r=2888
*/
THREE.TorusGeometry = function ( radius, tube, segmentsR, segmentsT ) {
THREE.TorusGeometry = function ( radius, tube, segmentsR, segmentsT, arc ) {
THREE.Geometry.call( this );
@@ -13,14 +13,15 @@ THREE.TorusGeometry = function ( radius, tube, segmentsR, segmentsT ) {
this.tube = tube || 40;
this.segmentsR = segmentsR || 8;
this.segmentsT = segmentsT || 6;
this.arc = arc || (2 * Math.PI);
var temp_uv = [];
for ( var j = 0; j <= this.segmentsR; ++j ) {
for ( var i = 0; i <= this.segmentsT; ++i ) {
var u = i / this.segmentsT * 2 * Math.PI;
var u = i / this.segmentsT * this.arc;
var v = j / this.segmentsR * 2 * Math.PI;
var x = (this.radius + this.tube*Math.cos(v))*Math.cos(u);
var y = (this.radius + this.tube*Math.cos(v))*Math.sin(u);