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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
var Matrix = function Matrix() {
};
Matrix.create = function( rowArray ) {
var mat = Matrix.I(4);
var index = 0;
for(var j=0; j<4; j++) {
for (var i=0; i<4; i++) {
mat[index] = rowArray[i][j];
index++;
}
}
return mat;
};
Matrix.I = function(dimen) {
var mat = [];
for (var i = 0; i<dimen*dimen; i++) {
mat.push(0);
}
var index = 0;
for (var j = 0; j<dimen; j++) {
mat[index] = 1.0;
index += dimen + 1;
}
return mat;
};
Matrix.Translation = function (vec) {
var mat = Matrix.I(4);
glmat4.translate(mat, vec);
return mat;
};
Matrix.RotationX = function( angle ) {
var mat = Matrix.I(4);
glmat4.rotateX(mat, angle);
return mat;
};
Matrix.RotationY = function( angle ) {
var mat = Matrix.I(4);
glmat4.rotateY(mat, angle);
return mat;
};
Matrix.RotationZ = function( angle ) {
var mat = Matrix.I(4);
glmat4.rotateZ(mat, angle);
return mat;
};
Matrix.Rotation = function(angle, axis) {
var mat = Matrix.I(4);
glmat4.rotate(mat, angle, axis);
return mat;
};
Matrix.Scale = function( scaleVec ) {
var mat = Matrix.I(4);
mat[ 0] = scaleVec[0];
mat[ 5] = scaleVec[1];
mat[10] = scaleVec[2];
return mat;
};
Matrix.flatten = function (mat) {
var result = [];
if (this.elements.length == 0) {
return [];
}
for (var i=0; i<16; i++) {
result.push(mat[i]);
}
return result;
};
Matrix.makePerspective = function (fovy, aspect, znear, zfar) {
var ymax = znear * Math.tan(fovy * Math.PI / 360.0);
var ymin = -ymax;
var xmin = ymin * aspect;
var xmax = ymax * aspect;
//return makeFrustum(xmin, xmax, ymin, ymax, znear, zfar);
var X = 2*znear/(xmax-xmin);
var Y = 2*znear/(ymax-ymin);
var A = (xmax+xmin)/(xmax-xmin);
var B = (ymax+ymin)/(ymax-ymin);
var C = -(zfar+znear)/(zfar-znear);
var D = -2*zfar*znear/(zfar-znear);
return Matrix.create([[X, 0, A, 0], [0, Y, B, 0], [0, 0, C, D], [0, 0, -1, 0]]);
};
// Namepace this class
// TODO
window.Matrix = Matrix;
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