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-<!DOCTYPE html>
-<html>
-<!--
-Copyright 2008 The Closure Library Authors. All Rights Reserved.
-
-Use of this source code is governed by the Apache License, Version 2.0.
-See the COPYING file for details.
--->
-<head>
-<meta http-equiv="X-UA-Compatible" content="IE=edge">
-<title>Closure Unit Tests - goog.graphics.AffineTransform</title>
-<script src="../base.js"></script>
-<script>
- goog.require('goog.graphics');
- goog.require('goog.graphics.AffineTransform');
- goog.require('goog.testing.jsunit');
-</script>
-</head>
-<body>
-
-<script>
- function testGetTranslateInstance() {
- var tx = goog.graphics.AffineTransform.getTranslateInstance(2, 4);
- assertEquals(1, tx.getScaleX());
- assertEquals(0, tx.getShearY());
- assertEquals(0, tx.getShearX());
- assertEquals(1, tx.getScaleY());
- assertEquals(2, tx.getTranslateX());
- assertEquals(4, tx.getTranslateY());
- }
-
- function testGetScaleInstance() {
- var tx = goog.graphics.AffineTransform.getScaleInstance(2, 4);
- assertEquals(2, tx.getScaleX());
- assertEquals(0, tx.getShearY());
- assertEquals(0, tx.getShearX());
- assertEquals(4, tx.getScaleY());
- assertEquals(0, tx.getTranslateX());
- assertEquals(0, tx.getTranslateY());
- }
-
- function testGetRotateInstance() {
- var tx = goog.graphics.AffineTransform.getRotateInstance(Math.PI / 2, 1, 2);
- assertRoughlyEquals(0, tx.getScaleX(), 1e-9);
- assertRoughlyEquals(1, tx.getShearY(), 1e-9);
- assertRoughlyEquals(-1, tx.getShearX(), 1e-9);
- assertRoughlyEquals(0, tx.getScaleY(), 1e-9);
- assertRoughlyEquals(3, tx.getTranslateX(), 1e-9);
- assertRoughlyEquals(1, tx.getTranslateY(), 1e-9);
- }
-
- function testGetShearInstance() {
- var tx = goog.graphics.AffineTransform.getShearInstance(2, 4);
- assertEquals(1, tx.getScaleX());
- assertEquals(4, tx.getShearY());
- assertEquals(2, tx.getShearX());
- assertEquals(1, tx.getScaleY());
- assertEquals(0, tx.getTranslateX());
- assertEquals(0, tx.getTranslateY());
- }
-
- function testConstructor() {
- assertThrows(function() {
- new goog.graphics.AffineTransform([0, 0]);
- });
- assertThrows(function() {
- new goog.graphics.AffineTransform({});
- });
- assertThrows(function() {
- new goog.graphics.AffineTransform(0, 0, 0, 'a', 0, 0);
- });
-
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- assertEquals(1, tx.getScaleX());
- assertEquals(2, tx.getShearY());
- assertEquals(3, tx.getShearX());
- assertEquals(4, tx.getScaleY());
- assertEquals(5, tx.getTranslateX());
- assertEquals(6, tx.getTranslateY());
-
- tx = new goog.graphics.AffineTransform();
- assert(tx.isIdentity());
- }
-
- function testIsIdentity() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- assertFalse(tx.isIdentity());
- tx.setTransform(1, 0, 0, 1, 0, 0);
- assert(tx.isIdentity());
- }
-
- function testClone() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- var copy = tx.clone();
- assertEquals(copy.getScaleX(), tx.getScaleX());
- assertEquals(copy.getShearY(), tx.getShearY());
- assertEquals(copy.getShearX(), tx.getShearX());
- assertEquals(copy.getScaleY(), tx.getScaleY());
- assertEquals(copy.getTranslateX(), tx.getTranslateX());
- assertEquals(copy.getTranslateY(), tx.getTranslateY());
- }
-
- function testSetTransform() {
- var tx = new goog.graphics.AffineTransform();
- assertThrows(function() {
- tx.setTransform(1, 2, 3, 4, 6);
- });
- assertThrows(function() {
- tx.setTransform('a', 2, 3, 4, 5, 6);
- });
-
- tx.setTransform(1, 2, 3, 4, 5, 6);
- assertEquals(1, tx.getScaleX());
- assertEquals(2, tx.getShearY());
- assertEquals(3, tx.getShearX());
- assertEquals(4, tx.getScaleY());
- assertEquals(5, tx.getTranslateX());
- assertEquals(6, tx.getTranslateY());
- }
-
- function testScale() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.scale(2, 3);
- assertEquals(2, tx.getScaleX());
- assertEquals(4, tx.getShearY());
- assertEquals(9, tx.getShearX());
- assertEquals(12, tx.getScaleY());
- assertEquals(5, tx.getTranslateX());
- assertEquals(6, tx.getTranslateY());
- }
-
- function testPreScale() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.preScale(2, 3);
- assertEquals(2, tx.getScaleX());
- assertEquals(6, tx.getShearY());
- assertEquals(6, tx.getShearX());
- assertEquals(12, tx.getScaleY());
- assertEquals(10, tx.getTranslateX());
- assertEquals(18, tx.getTranslateY());
- }
-
- function testTranslate() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.translate(2, 3);
- assertEquals(1, tx.getScaleX());
- assertEquals(2, tx.getShearY());
- assertEquals(3, tx.getShearX());
- assertEquals(4, tx.getScaleY());
- assertEquals(16, tx.getTranslateX());
- assertEquals(22, tx.getTranslateY());
- }
-
- function testPreTranslate() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.preTranslate(2, 3);
- assertEquals(1, tx.getScaleX());
- assertEquals(2, tx.getShearY());
- assertEquals(3, tx.getShearX());
- assertEquals(4, tx.getScaleY());
- assertEquals(7, tx.getTranslateX());
- assertEquals(9, tx.getTranslateY());
- }
-
- function testRotate() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.rotate(Math.PI / 2, 1, 1);
- assertRoughlyEquals(3, tx.getScaleX(), 1e-9);
- assertRoughlyEquals(4, tx.getShearY(), 1e-9);
- assertRoughlyEquals(-1, tx.getShearX(), 1e-9);
- assertRoughlyEquals(-2, tx.getScaleY(), 1e-9);
- assertRoughlyEquals(7, tx.getTranslateX(), 1e-9);
- assertRoughlyEquals(10, tx.getTranslateY(), 1e-9);
- }
-
- function testPreRotate() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.preRotate(Math.PI / 2, 1, 1);
- assertRoughlyEquals(-2, tx.getScaleX(), 1e-9);
- assertRoughlyEquals(1, tx.getShearY(), 1e-9);
- assertRoughlyEquals(-4, tx.getShearX(), 1e-9);
- assertRoughlyEquals(3, tx.getScaleY(), 1e-9);
- assertRoughlyEquals(-4, tx.getTranslateX(), 1e-9);
- assertRoughlyEquals(5, tx.getTranslateY(), 1e-9);
- }
-
- function testShear() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.shear(2, 3);
- assertEquals(10, tx.getScaleX());
- assertEquals(14, tx.getShearY());
- assertEquals(5, tx.getShearX());
- assertEquals(8, tx.getScaleY());
- assertEquals(5, tx.getTranslateX());
- assertEquals(6, tx.getTranslateY());
- }
-
- function testPreShear() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.preShear(2, 3);
- assertEquals(5, tx.getScaleX());
- assertEquals(5, tx.getShearY());
- assertEquals(11, tx.getShearX());
- assertEquals(13, tx.getScaleY());
- assertEquals(17, tx.getTranslateX());
- assertEquals(21, tx.getTranslateY());
- }
-
- function testConcatentate() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.concatenate(new goog.graphics.AffineTransform(2, 1, 6, 5, 4, 3));
- assertEquals(5, tx.getScaleX());
- assertEquals(8, tx.getShearY());
- assertEquals(21, tx.getShearX());
- assertEquals(32, tx.getScaleY());
- assertEquals(18, tx.getTranslateX());
- assertEquals(26, tx.getTranslateY());
- }
-
- function testPreConcatentate() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- tx.preConcatenate(new goog.graphics.AffineTransform(2, 1, 6, 5, 4, 3));
- assertEquals(14, tx.getScaleX());
- assertEquals(11, tx.getShearY());
- assertEquals(30, tx.getShearX());
- assertEquals(23, tx.getScaleY());
- assertEquals(50, tx.getTranslateX());
- assertEquals(38, tx.getTranslateY());
- }
-
- function testAssociativeConcatenate() {
- var x = new goog.graphics.AffineTransform(2, 3, 5, 7, 11, 13).concatenate(
- new goog.graphics.AffineTransform(17, 19, 23, 29, 31, 37));
- var y = new goog.graphics.AffineTransform(17, 19, 23, 29, 31, 37)
- .preConcatenate(new goog.graphics.AffineTransform(2, 3, 5, 7, 11, 13));
- assertEquals(x.getScaleX(), y.getScaleX());
- assertEquals(x.getShearY(), y.getShearY());
- assertEquals(x.getShearX(), y.getShearX());
- assertEquals(x.getScaleY(), y.getScaleY());
- assertEquals(x.getTranslateX(), y.getTranslateX());
- assertEquals(x.getTranslateY(), y.getTranslateY());
- };
-
- function testTransform() {
- var srcPts = [0, 0, 1, 0, 1, 1, 0, 1];
- var dstPts = [];
- var tx = goog.graphics.AffineTransform.getScaleInstance(2, 3);
- tx.translate(5, 10);
- tx.rotate(Math.PI / 4, 5, 10);
- tx.transform(srcPts, 0, dstPts, 0, 4);
- assert(goog.array.equals(
- [27.071068, 28.180195, 28.485281, 30.301516,
- 27.071068, 32.422836, 25.656855, 30.301516],
- dstPts,
- goog.math.nearlyEquals));
- }
-
- function testGetDeterminant() {
- var tx = goog.graphics.AffineTransform.getScaleInstance(2, 3);
- tx.translate(5, 10);
- tx.rotate(Math.PI / 4, 5, 10);
- assertEquals(6, tx.getDeterminant());
- }
-
- function testIsInvertible() {
- assertTrue(new goog.graphics.AffineTransform(2, 3, 4, 5, 6, 7).
- isInvertible());
- assertTrue(new goog.graphics.AffineTransform(1, 0, 0, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(NaN, 0, 0, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, NaN, 0, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, NaN, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, 0, NaN, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, 0, 1, NaN, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, 0, 1, 0, NaN).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(Infinity, 0, 0, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, Infinity, 0, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, Infinity, 1, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, 0, Infinity, 0, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, 0, 1, Infinity, 0).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(1, 0, 0, 1, 0, Infinity).
- isInvertible());
- assertFalse(new goog.graphics.AffineTransform(0, 0, 0, 0, 1, 0).
- isInvertible());
- }
-
- function testCreateInverse() {
- var tx = goog.graphics.AffineTransform.getScaleInstance(2, 3);
- tx.translate(5, 10);
- tx.rotate(Math.PI / 4, 5, 10);
- var inverse = tx.createInverse();
- assert(goog.math.nearlyEquals(0.353553, inverse.getScaleX()));
- assert(goog.math.nearlyEquals(-0.353553, inverse.getShearY()));
- assert(goog.math.nearlyEquals(0.235702, inverse.getShearX()));
- assert(goog.math.nearlyEquals(0.235702, inverse.getScaleY()));
- assert(goog.math.nearlyEquals(-16.213203, inverse.getTranslateX()));
- assert(goog.math.nearlyEquals(2.928932, inverse.getTranslateY()));
- }
-
- function testCopyFrom() {
- var from = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- var to = new goog.graphics.AffineTransform();
- to.copyFrom(from);
- assertEquals(from.getScaleX(), to.getScaleX());
- assertEquals(from.getShearY(), to.getShearY());
- assertEquals(from.getShearX(), to.getShearX());
- assertEquals(from.getScaleY(), to.getScaleY());
- assertEquals(from.getTranslateX(), to.getTranslateX());
- assertEquals(from.getTranslateY(), to.getTranslateY());
- }
-
- function testToString() {
- var tx = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- assertEquals("matrix(1,2,3,4,5,6)", tx.toString());
- }
-
- function testEquals() {
- var tx1 = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- var tx2 = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, 6);
- assertEqualsMethod(tx1, tx2, true);
-
- tx2 = new goog.graphics.AffineTransform(-1, 2, 3, 4, 5, 6);
- assertEqualsMethod(tx1, tx2, false);
-
- tx2 = new goog.graphics.AffineTransform(1, -1, 3, 4, 5, 6);
- assertEqualsMethod(tx1, tx2, false);
-
- tx2 = new goog.graphics.AffineTransform(1, 2, -3, 4, 5, 6);
- assertEqualsMethod(tx1, tx2, false);
-
- tx2 = new goog.graphics.AffineTransform(1, 2, 3, -4, 5, 6);
- assertEqualsMethod(tx1, tx2, false);
-
- tx2 = new goog.graphics.AffineTransform(1, 2, 3, 4, -5, 6);
- assertEqualsMethod(tx1, tx2, false);
-
- tx2 = new goog.graphics.AffineTransform(1, 2, 3, 4, 5, -6);
- assertEqualsMethod(tx1, tx2, false);
- }
-
- function assertEqualsMethod(tx1, tx2, expected) {
- assertEquals(expected, tx1.equals(tx2));
- assertEquals(expected, tx2.equals(tx1));
- assertEquals(true, tx1.equals(tx1));
- assertEquals(true, tx2.equals(tx2));
- }
-</script>
-</body>
-</html>
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