| New file |
|---|
| 0,0 → 1,110 |
|---|
| if(!dojo._hasResource["dojox.gfx3d.vector"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
| dojo._hasResource["dojox.gfx3d.vector"] = true; |
| dojo.provide("dojox.gfx3d.vector"); |
| |
| dojo.mixin(dojox.gfx3d.vector, { |
| sum: function(){ |
| // summary: sum of the vectors |
| var v = {x: 0, y: 0, z:0}; |
| dojo.forEach(arguments, function(item){ v.x += item.x; v.y += item.y; v.z += item.z; }); |
| return v; |
| }, |
| |
| center: function(){ |
| // summary: center of the vectors |
| var l = arguments.length; |
| if(l == 0){ |
| return {x: 0, y: 0, z: 0}; |
| } |
| var v = dojox.gfx3d.vector.sum(arguments); |
| return {x: v.x/l, y: v.y/l, z: v.z/l}; |
| }, |
| |
| substract: function(/* Pointer */a, /* Pointer */b){ |
| return {x: a.x - b.x, y: a.y - b.y, z: a.z - b.z}; |
| }, |
| |
| _crossProduct: function(x, y, z, u, v, w){ |
| // summary: applies a cross product of two vectorss, (x, y, z) and (u, v, w) |
| // x: Number: an x coordinate of a point |
| // y: Number: a y coordinate of a point |
| // z: Number: a z coordinate of a point |
| // u: Number: an x coordinate of a point |
| // v: Number: a y coordinate of a point |
| // w: Number: a z coordinate of a point |
| return {x: y * w - z * v, y: z * u - x * w, z: x * v - y * u}; // Object |
| }, |
| |
| crossProduct: function(/* Number||Point */ a, /* Number||Point */ b, /* Number, optional */ c, /* Number, optional */ d, /* Number, optional */ e, /* Number, optional */ f){ |
| // summary: applies a matrix to a point |
| // matrix: dojox.gfx3d.matrix.Matrix3D: a 3D matrix object to be applied |
| // a: Number: an x coordinate of a point |
| // b: Number: a y coordinate of a point |
| // c: Number: a z coordinate of a point |
| // d: Number: an x coordinate of a point |
| // e: Number: a y coordinate of a point |
| // f: Number: a z coordinate of a point |
| if(arguments.length == 6 && dojo.every(arguments, function(item){ return typeof item == "number"; })){ |
| return dojox.gfx3d.vector._crossProduct(a, b, c, d, e, f); // Object |
| } |
| // branch |
| // a: Object: a point |
| // b: Object: a point |
| // c: null |
| // d: null |
| // e: null |
| // f: null |
| return dojox.gfx3d.vector._crossProduct(a.x, a.y, a.z, b.x, b.y, b.z); // Object |
| }, |
| |
| _dotProduct: function(x, y, z, u, v, w){ |
| // summary: applies a cross product of two vectorss, (x, y, z) and (u, v, w) |
| // x: Number: an x coordinate of a point |
| // y: Number: a y coordinate of a point |
| // z: Number: a z coordinate of a point |
| // u: Number: an x coordinate of a point |
| // v: Number: a y coordinate of a point |
| // w: Number: a z coordinate of a point |
| return x * u + y * v + z * w; // Number |
| }, |
| dotProduct: function(/* Number||Point */ a, /* Number||Point */ b, /* Number, optional */ c, /* Number, optional */ d, /* Number, optional */ e, /* Number, optional */ f){ |
| // summary: applies a matrix to a point |
| // matrix: dojox.gfx3d.matrix.Matrix3D: a 3D matrix object to be applied |
| // a: Number: an x coordinate of a point |
| // b: Number: a y coordinate of a point |
| // c: Number: a z coordinate of a point |
| // d: Number: an x coordinate of a point |
| // e: Number: a y coordinate of a point |
| // f: Number: a z coordinate of a point |
| if(arguments.length == 6 && dojo.every(arguments, function(item){ return typeof item == "number"; })){ |
| return dojox.gfx3d.vector._dotProduct(a, b, c, d, e, f); // Object |
| } |
| // branch |
| // a: Object: a point |
| // b: Object: a point |
| // c: null |
| // d: null |
| // e: null |
| // f: null |
| return dojox.gfx3d.vector._dotProduct(a.x, a.y, a.z, b.x, b.y, b.z); // Object |
| }, |
| |
| normalize: function(/* Point||Array*/ a, /* Point */ b, /* Point */ c){ |
| // summary: find the normal of the implicit surface |
| // a: Object: a point |
| // b: Object: a point |
| // c: Object: a point |
| var l, m, n; |
| if(a instanceof Array){ |
| l = a[0]; m = a[1]; n = a[2]; |
| }else{ |
| l = a; m = b; n = c; |
| } |
| |
| var u = dojox.gfx3d.vector.substract(m, l); |
| var v = dojox.gfx3d.vector.substract(n, l); |
| return dojox.gfx3d.vector.crossProduct(u, v); |
| } |
| }); |
| |
| } |