/* <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.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;