2012-05-17 22:50:00 +00:00
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<!DOCTYPE html>
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<html>
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<head>
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<link rel='stylesheet' href='qunit/qunit.css' type='text/css'/>
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2012-07-25 06:32:18 +00:00
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<script src='../editor/assets/jquery.js'></script>
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2012-05-17 22:50:00 +00:00
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<script type='text/javascript' src='../editor/math.js'></script>
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<script type='text/javascript' src='qunit/qunit.js'></script>
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<script type='text/javascript'>
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$(function() {
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// log function
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QUnit.log = function(result, message) {
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if (window.console && window.console.log) {
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window.console.log(result +' :: '+ message);
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}
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};
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var svgns = 'http://www.w3.org/2000/svg';
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var svg = document.createElementNS(svgns, 'svg');
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module('svgedit.math');
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test('Test svgedit.math package', function() {
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expect(7);
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ok(svgedit.math);
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ok(svgedit.math.transformPoint);
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ok(svgedit.math.isIdentity);
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ok(svgedit.math.matrixMultiply);
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equals(typeof svgedit.math.transformPoint, typeof function(){});
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equals(typeof svgedit.math.isIdentity, typeof function(){});
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equals(typeof svgedit.math.matrixMultiply, typeof function(){});
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});
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test('Test svgedit.math.transformPoint() function', function() {
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expect(6);
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var transformPoint = svgedit.math.transformPoint;
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var m = svg.createSVGMatrix();
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m.a = 1; m.b = 0;
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m.c = 0; m.d = 1;
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m.e = 0; m.f = 0;
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var pt = transformPoint(100, 200, m);
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equals(pt.x, 100);
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equals(pt.y, 200);
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m.e = 300; m.f = 400;
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pt = transformPoint(100, 200, m);
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equals(pt.x, 400);
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equals(pt.y, 600);
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m.a = 0.5; m.b = 0.75;
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m.c = 1.25; m.d = 2;
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pt = transformPoint(100, 200, m);
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equals(pt.x, 100 * m.a + 200 * m.c + m.e);
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equals(pt.y, 100 * m.b + 200 * m.d + m.f);
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});
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test('Test svgedit.math.isIdentity() function', function() {
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expect(2);
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ok(svgedit.math.isIdentity(svg.createSVGMatrix()));
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var m = svg.createSVGMatrix();
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m.a = 1; m.b = 0;
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m.c = 0; m.d = 1;
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m.e = 0; m.f = 0;
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ok(svgedit.math.isIdentity(m));
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});
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test('Test svgedit.math.matrixMultiply() function', function() {
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expect(5);
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var mult = svgedit.math.matrixMultiply;
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var isIdentity = svgedit.math.isIdentity;
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// translate there and back
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var tr_1 = svg.createSVGMatrix().translate(100,50),
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tr_2 = svg.createSVGMatrix().translate(-90,0),
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tr_3 = svg.createSVGMatrix().translate(-10,-50),
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I = mult(tr_1,tr_2,tr_3);
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ok(isIdentity(I), 'Expected identity matrix when translating there and back');
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// rotate there and back
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// TODO: currently Mozilla fails this when rotating back at -50 and then -40 degrees
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// (b and c are *almost* zero, but not zero)
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var rot_there = svg.createSVGMatrix().rotate(90),
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rot_back = svg.createSVGMatrix().rotate(-90); // TODO: set this to -50
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rot_back_more = svg.createSVGMatrix().rotate(0); // TODO: set this to -40
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I = mult(rot_there, rot_back, rot_back_more);
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ok(isIdentity(I), 'Expected identity matrix when rotating there and back');
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// scale up and down
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var scale_up = svg.createSVGMatrix().scale(4),
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scale_down = svg.createSVGMatrix().scaleNonUniform(0.25,1);
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scale_down_more = svg.createSVGMatrix().scaleNonUniform(1,0.25);
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I = mult(scale_up, scale_down, scale_down_more);
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ok(isIdentity(I), 'Expected identity matrix when scaling up and down');
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// test multiplication with its inverse
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I = mult(rot_there, rot_there.inverse());
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ok(isIdentity(I), 'Expected identity matrix when multiplying a matrix by its inverse');
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I = mult(rot_there.inverse(), rot_there);
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ok(isIdentity(I), 'Expected identity matrix when multiplying a matrix by its inverse');
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});
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});
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</script>
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</head>
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<body>
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<h1 id='qunit-header'>Unit Tests for math.js</h1>
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<h2 id='qunit-banner'></h2>
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<h2 id='qunit-userAgent'></h2>
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<ol id='qunit-tests'>
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</ol>
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</body>
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</html>
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