Subversion Repositories Applications.papyrus

/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.gfx.matrix");
dojo.require("dojo.lang.common");
dojo.require("dojo.math.*");
dojo.gfx.matrix.Matrix2D = function (arg) {
        if (arg) {
                if (arg instanceof Array) {
                        if (arg.length > 0) {
                                var m = dojo.gfx.matrix.normalize(arg[0]);
                                for (var i = 1; i < arg.length; ++i) {
                                        var l = m;
                                        var r = dojo.gfx.matrix.normalize(arg[i]);
                                        m = new dojo.gfx.matrix.Matrix2D();
                                        m.xx = l.xx * r.xx + l.xy * r.yx;
                                        m.xy = l.xx * r.xy + l.xy * r.yy;
                                        m.yx = l.yx * r.xx + l.yy * r.yx;
                                        m.yy = l.yx * r.xy + l.yy * r.yy;
                                        m.dx = l.xx * r.dx + l.xy * r.dy + l.dx;
                                        m.dy = l.yx * r.dx + l.yy * r.dy + l.dy;
                                }
                                dojo.mixin(this, m);
                        }
                } else {
                        dojo.mixin(this, arg);
                }
        }
};
dojo.extend(dojo.gfx.matrix.Matrix2D, {xx:1, xy:0, yx:0, yy:1, dx:0, dy:0});
dojo.mixin(dojo.gfx.matrix, {identity:new dojo.gfx.matrix.Matrix2D(), flipX:new dojo.gfx.matrix.Matrix2D({xx:-1}), flipY:new dojo.gfx.matrix.Matrix2D({yy:-1}), flipXY:new dojo.gfx.matrix.Matrix2D({xx:-1, yy:-1}), translate:function (a, b) {
        if (arguments.length > 1) {
                return new dojo.gfx.matrix.Matrix2D({dx:a, dy:b});
        }
        return new dojo.gfx.matrix.Matrix2D({dx:a.x, dy:a.y});
}, scale:function (a, b) {
        if (arguments.length > 1) {
                return new dojo.gfx.matrix.Matrix2D({xx:a, yy:b});
        }
        if (typeof a == "number") {
                return new dojo.gfx.matrix.Matrix2D({xx:a, yy:a});
        }
        return new dojo.gfx.matrix.Matrix2D({xx:a.x, yy:a.y});
}, rotate:function (angle) {
        var c = Math.cos(angle);
        var s = Math.sin(angle);
        return new dojo.gfx.matrix.Matrix2D({xx:c, xy:s, yx:-s, yy:c});
}, rotateg:function (degree) {
        return dojo.gfx.matrix.rotate(dojo.math.degToRad(degree));
}, skewX:function (angle) {
        return new dojo.gfx.matrix.Matrix2D({xy:Math.tan(angle)});
}, skewXg:function (degree) {
        return dojo.gfx.matrix.skewX(dojo.math.degToRad(degree));
}, skewY:function (angle) {
        return new dojo.gfx.matrix.Matrix2D({yx:-Math.tan(angle)});
}, skewYg:function (degree) {
        return dojo.gfx.matrix.skewY(dojo.math.degToRad(degree));
}, normalize:function (matrix) {
        return (matrix instanceof dojo.gfx.matrix.Matrix2D) ? matrix : new dojo.gfx.matrix.Matrix2D(matrix);
}, clone:function (matrix) {
        var obj = new dojo.gfx.matrix.Matrix2D();
        for (var i in matrix) {
                if (typeof (matrix[i]) == "number" && typeof (obj[i]) == "number" && obj[i] != matrix[i]) {
                        obj[i] = matrix[i];
                }
        }
        return obj;
}, invert:function (matrix) {
        var m = dojo.gfx.matrix.normalize(matrix);
        var D = m.xx * m.yy - m.xy * m.yx;
        var M = new dojo.gfx.matrix.Matrix2D({xx:m.yy / D, xy:-m.xy / D, yx:-m.yx / D, yy:m.xx / D, dx:(m.yx * m.dy - m.yy * m.dx) / D, dy:(m.xy * m.dx - m.xx * m.dy) / D});
        return M;
}, _multiplyPoint:function (m, x, y) {
        return {x:m.xx * x + m.xy * y + m.dx, y:m.yx * x + m.yy * y + m.dy};
}, multiplyPoint:function (matrix, a, b) {
        var m = dojo.gfx.matrix.normalize(matrix);
        if (typeof a == "number" && typeof b == "number") {
                return dojo.gfx.matrix._multiplyPoint(m, a, b);
        }
        return dojo.gfx.matrix._multiplyPoint(m, a.x, a.y);
}, multiply:function (matrix) {
        var m = dojo.gfx.matrix.normalize(matrix);
        for (var i = 1; i < arguments.length; ++i) {
                var l = m;
                var r = dojo.gfx.matrix.normalize(arguments[i]);
                m = new dojo.gfx.matrix.Matrix2D();
                m.xx = l.xx * r.xx + l.xy * r.yx;
                m.xy = l.xx * r.xy + l.xy * r.yy;
                m.yx = l.yx * r.xx + l.yy * r.yx;
                m.yy = l.yx * r.xy + l.yy * r.yy;
                m.dx = l.xx * r.dx + l.xy * r.dy + l.dx;
                m.dy = l.yx * r.dx + l.yy * r.dy + l.dy;
        }
        return m;
}, _sandwich:function (m, x, y) {
        return dojo.gfx.matrix.multiply(dojo.gfx.matrix.translate(x, y), m, dojo.gfx.matrix.translate(-x, -y));
}, scaleAt:function (a, b, c, d) {
        switch (arguments.length) {
          case 4:
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.scale(a, b), c, d);
          case 3:
                if (typeof c == "number") {
                        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.scale(a), b, c);
                }
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.scale(a, b), c.x, c.y);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.scale(a), b.x, b.y);
}, rotateAt:function (angle, a, b) {
        if (arguments.length > 2) {
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.rotate(angle), a, b);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.rotate(angle), a.x, a.y);
}, rotategAt:function (degree, a, b) {
        if (arguments.length > 2) {
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.rotateg(degree), a, b);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.rotateg(degree), a.x, a.y);
}, skewXAt:function (angle, a, b) {
        if (arguments.length > 2) {
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewX(angle), a, b);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewX(angle), a.x, a.y);
}, skewXgAt:function (degree, a, b) {
        if (arguments.length > 2) {
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewXg(degree), a, b);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewXg(degree), a.x, a.y);
}, skewYAt:function (angle, a, b) {
        if (arguments.length > 2) {
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewY(angle), a, b);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewY(angle), a.x, a.y);
}, skewYgAt:function (degree, a, b) {
        if (arguments.length > 2) {
                return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewYg(degree), a, b);
        }
        return dojo.gfx.matrix._sandwich(dojo.gfx.matrix.skewYg(degree), a.x, a.y);
}});