--- /dev/null
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+ <pre class="prettyprint lang-js">/*
+ * @class Ext.draw.Matrix
+ * @private
+ */
+Ext.define('Ext.draw.Matrix', {
+
+ /* Begin Definitions */
+
+ requires: ['Ext.draw.Draw'],
+
+ /* End Definitions */
+
+ constructor: function(a, b, c, d, e, f) {
+ if (a != null) {
+ this.matrix = [[a, c, e], [b, d, f], [0, 0, 1]];
+ }
+ else {
+ this.matrix = [[1, 0, 0], [0, 1, 0], [0, 0, 1]];
+ }
+ },
+
+ add: function(a, b, c, d, e, f) {
+ var me = this,
+ out = [[], [], []],
+ matrix = [[a, c, e], [b, d, f], [0, 0, 1]],
+ x,
+ y,
+ z,
+ res;
+
+ for (x = 0; x < 3; x++) {
+ for (y = 0; y < 3; y++) {
+ res = 0;
+ for (z = 0; z < 3; z++) {
+ res += me.matrix[x][z] * matrix[z][y];
+ }
+ out[x][y] = res;
+ }
+ }
+ me.matrix = out;
+ },
+
+ prepend: function(a, b, c, d, e, f) {
+ var me = this,
+ out = [[], [], []],
+ matrix = [[a, c, e], [b, d, f], [0, 0, 1]],
+ x,
+ y,
+ z,
+ res;
+
+ for (x = 0; x < 3; x++) {
+ for (y = 0; y < 3; y++) {
+ res = 0;
+ for (z = 0; z < 3; z++) {
+ res += matrix[x][z] * me.matrix[z][y];
+ }
+ out[x][y] = res;
+ }
+ }
+ me.matrix = out;
+ },
+
+ invert: function() {
+ var matrix = this.matrix,
+ a = matrix[0][0],
+ b = matrix[1][0],
+ c = matrix[0][1],
+ d = matrix[1][1],
+ e = matrix[0][2],
+ f = matrix[1][2],
+ x = a * d - b * c;
+ return new Ext.draw.Matrix(d / x, -b / x, -c / x, a / x, (c * f - d * e) / x, (b * e - a * f) / x);
+ },
+
+ clone: function() {
+ var matrix = this.matrix,
+ a = matrix[0][0],
+ b = matrix[1][0],
+ c = matrix[0][1],
+ d = matrix[1][1],
+ e = matrix[0][2],
+ f = matrix[1][2];
+ return new Ext.draw.Matrix(a, b, c, d, e, f);
+ },
+
+ translate: function(x, y) {
+ this.prepend(1, 0, 0, 1, x, y);
+ },
+
+ scale: function(x, y, cx, cy) {
+ var me = this;
+ if (y == null) {
+ y = x;
+ }
+ me.add(1, 0, 0, 1, cx, cy);
+ me.add(x, 0, 0, y, 0, 0);
+ me.add(1, 0, 0, 1, -cx, -cy);
+ },
+
+ rotate: function(a, x, y) {
+ a = Ext.draw.Draw.rad(a);
+ var me = this,
+ cos = +Math.cos(a).toFixed(9),
+ sin = +Math.sin(a).toFixed(9);
+ me.add(cos, sin, -sin, cos, x, y);
+ me.add(1, 0, 0, 1, -x, -y);
+ },
+
+ x: function(x, y) {
+ var matrix = this.matrix;
+ return x * matrix[0][0] + y * matrix[0][1] + matrix[0][2];
+ },
+
+ y: function(x, y) {
+ var matrix = this.matrix;
+ return x * matrix[1][0] + y * matrix[1][1] + matrix[1][2];
+ },
+
+ get: function(i, j) {
+ return + this.matrix[i][j].toFixed(4);
+ },
+
+ toString: function() {
+ var me = this;
+ return [me.get(0, 0), me.get(0, 1), me.get(1, 0), me.get(1, 1), 0, 0].join();
+ },
+
+ toSvg: function() {
+ var me = this;
+ return "matrix(" + [me.get(0, 0), me.get(1, 0), me.get(0, 1), me.get(1, 1), me.get(0, 2), me.get(1, 2)].join() + ")";
+ },
+
+ toFilter: function() {
+ var me = this;
+ return "progid:DXImageTransform.Microsoft.Matrix(M11=" + me.get(0, 0) +
+ ", M12=" + me.get(0, 1) + ", M21=" + me.get(1, 0) + ", M22=" + me.get(1, 1) +
+ ", Dx=" + me.get(0, 2) + ", Dy=" + me.get(1, 2) + ")";
+ },
+
+ offset: function() {
+ var matrix = this.matrix;
+ return [matrix[0][2].toFixed(4), matrix[1][2].toFixed(4)];
+ },
+
+ // Split matrix into Translate Scale, Shear, and Rotate
+ split: function () {
+ function norm(a) {
+ return a[0] * a[0] + a[1] * a[1];
+ }
+ function normalize(a) {
+ var mag = Math.sqrt(norm(a));
+ a[0] /= mag;
+ a[1] /= mag;
+ }
+ var matrix = this.matrix,
+ out = {
+ translateX: matrix[0][2],
+ translateY: matrix[1][2]
+ },
+ row;
+
+ // scale and shear
+ row = [[matrix[0][0], matrix[0][1]], [matrix[1][1], matrix[1][1]]];
+ out.scaleX = Math.sqrt(norm(row[0]));
+ normalize(row[0]);
+
+ out.shear = row[0][0] * row[1][0] + row[0][1] * row[1][1];
+ row[1] = [row[1][0] - row[0][0] * out.shear, row[1][1] - row[0][1] * out.shear];
+
+ out.scaleY = Math.sqrt(norm(row[1]));
+ normalize(row[1]);
+ out.shear /= out.scaleY;
+
+ // rotation
+ out.rotate = Math.asin(-row[0][1]);
+
+ out.isSimple = !+out.shear.toFixed(9) && (out.scaleX.toFixed(9) == out.scaleY.toFixed(9) || !out.rotate);
+
+ return out;
+ }
+});</pre>
+</body>
+</html>
git.ithinksw.org / extjs.git / blobdiff