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60a290282c
This yields a 10x paint performance increase at #map=18.88/38.85208/-76.72632, as measured with Chrome Canary's "Continuous Page Repainting" mode. Fixes #885.
42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
describe('d3.clip.cohenSutherland', function() {
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var clip;
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beforeEach(function() {
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clip = d3.clip.cohenSutherland()
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.bounds([0, 0, 10, 10]);
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});
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it('clips an empty array', function() {
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expect(clip([])).to.eql([]);
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});
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it('clips a point inside bounds', function() {
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expect(clip([[0, 0]])).to.eql([[[0, 0]]]);
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});
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it('clips a point outside bounds', function() {
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expect(clip([[-1, -1]])).to.eql([]);
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});
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it('clips a single segment inside bounds', function() {
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expect(clip([[0, 0], [10, 10]])).to.eql([[[0, 0], [10, 10]]]);
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});
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it('clips a single segment leaving bounds', function() {
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expect(clip([[5, 5], [15, 15]])).to.eql([[[5, 5], [10, 10]]]);
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});
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it('clips a single segment entering bounds', function() {
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expect(clip([[15, 15], [5, 5]])).to.eql([[[10, 10], [5, 5]]]);
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});
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it('clips a single segment entering and leaving bounds', function() {
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expect(clip([[0, 15], [15, 0]])).to.eql([[[5, 10], [10, 5]]]);
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});
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it('clips multiple segments', function() {
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expect(clip([[15, 15], [5, 5], [15, 15], [5, 5]])).to.
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eql([[[10, 10], [5, 5], [10, 10]], [[10, 10], [5, 5]]]);
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});
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});
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