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Camera node for scene hierarchy

This commit is contained in:
Mike Armstrong 2015-07-16 01:57:46 -07:00
parent 72694a722e
commit 9f94dd457a
1 changed files with 18 additions and 0 deletions
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18
Libraries/Utilities/MatrixMath.js
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@ -31,6 +31,24 @@ var MatrixMath = {
];
},
createFrustum: function(left, right, bottom, top, near, far) {
var r_width = 1 / (right - left);
var r_height = 1 / (top - bottom);
var r_depth = 1 / (near - far);
var x = 2 * (near * r_width);
var y = 2 * (near * r_height);
var A = (right + left) * r_width;
var B = (top + bottom) * r_height;
var C = (far + near) * r_depth;
var D = 2 * (far * near * r_depth);
return [
x, 0, 0, 0,
0, y, 0, 0,
A, B, C,-1,
0, 0, D, 0,
];
},
createTranslate2d: function(x, y) {
var mat = MatrixMath.createIdentityMatrix();
MatrixMath.reuseTranslate2dCommand(mat, x, y);