server/aspnetapp/wwwroot/lib/alloyfinger/transformjs/transform.js

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/* transformjs
 * By dntzhang
 * Github: https://github.com/AlloyTeam/AlloyTouch/tree/master/transformjs
 */
;(function () {

    var Matrix3D = function (n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
        this.elements =window.Float32Array ? new Float32Array(16) : [];
        var te = this.elements;
        te[0] = (n11 !== undefined) ? n11 : 1; te[4] = n12 || 0; te[8] = n13 || 0; te[12] = n14 || 0;
        te[1] = n21 || 0; te[5] = (n22 !== undefined) ? n22 : 1; te[9] = n23 || 0; te[13] = n24 || 0;
        te[2] = n31 || 0; te[6] = n32 || 0; te[10] = (n33 !== undefined) ? n33 : 1; te[14] = n34 || 0;
        te[3] = n41 || 0; te[7] = n42 || 0; te[11] = n43 || 0; te[15] = (n44 !== undefined) ? n44 : 1;
    };

    Matrix3D.DEG_TO_RAD = Math.PI / 180;

    Matrix3D.prototype = {
        set: function (n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
            var te = this.elements;
            te[0] = n11; te[4] = n12; te[8] = n13; te[12] = n14;
            te[1] = n21; te[5] = n22; te[9] = n23; te[13] = n24;
            te[2] = n31; te[6] = n32; te[10] = n33; te[14] = n34;
            te[3] = n41; te[7] = n42; te[11] = n43; te[15] = n44;
            return this;
        },
        identity: function () {
            this.set(
                1, 0, 0, 0,
                0, 1, 0, 0,
                0, 0, 1, 0,
                0, 0, 0, 1
            );
            return this;
        },
        multiplyMatrices: function (a, be) {

            var ae = a.elements;
            var te = this.elements;
            var a11 = ae[0], a12 = ae[4], a13 = ae[8], a14 = ae[12];
            var a21 = ae[1], a22 = ae[5], a23 = ae[9], a24 = ae[13];
            var a31 = ae[2], a32 = ae[6], a33 = ae[10], a34 = ae[14];
            var a41 = ae[3], a42 = ae[7], a43 = ae[11], a44 = ae[15];

            var b11 = be[0], b12 = be[1], b13 = be[2], b14 = be[3];
            var b21 = be[4], b22 = be[5], b23 = be[6], b24 = be[7];
            var b31 = be[8], b32 = be[9], b33 = be[10], b34 = be[11];
            var b41 = be[12], b42 = be[13], b43 = be[14], b44 = be[15];

            te[0] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
            te[4] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
            te[8] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
            te[12] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;

            te[1] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
            te[5] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
            te[9] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
            te[13] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;

            te[2] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;