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Convenience function for common composite transform

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This commit is contained in:
Tim Schaub
2016-06-24 10:03:13 -06:00
committed by Andreas Hocevar
parent 4cde6a0a6d
commit a655234cc3
2 changed files with 49 additions and 0 deletions
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23
test/spec/ol/transform.test.js
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@@ -72,6 +72,29 @@ describe('ol.transform', function() {
});
});
describe('ol.transform.compose()', function() {
it('composes a translate, scale, rotate, translate transform', function() {
var dx1 = 3;
var dy1 = 4;
var sx = 1.5;
var sy = -1.5;
var angle = Math.PI / 3;
var dx2 = -dx1 / 2;
var dy2 = -dy1 / 2;
var expected = ol.transform.create();
ol.transform.translate(expected, dx1, dy1);
ol.transform.scale(expected, sx, sy);
ol.transform.rotate(expected, angle);
ol.transform.translate(expected, dx2, dy2);
var composed = ol.transform.create();
var composedReturn = ol.transform.compose(composed, dx1, dy1, sx, sy, angle, dx2, dy2);
expect(composed).to.equal(composedReturn);
expect(composed).to.eql(expected);
});
});
describe('ol.transform.invert()', function() {
it('inverts a transform', function() {
var transform = [1, 0, 1, 0, 1, 0];