54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
import expect from '../../../expect.js';
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import {matchingChunk} from '../../../../../src/ol/geom/flat/straightchunk.js';
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describe('ol/geom/flat/straightchunk.js', function () {
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describe('matchingChunk', function () {
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describe('single segment with stride == 3', function () {
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const flatCoords = [0, 0, 42, 1, 1, 42];
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const stride = 3;
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it('returns whole line with angle delta', function () {
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const got = matchingChunk(Math.PI / 4, flatCoords, 0, 6, stride);
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expect(got).to.eql([0, 6]);
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});
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it('returns whole line with zero angle delta', function () {
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const got = matchingChunk(0, flatCoords, 0, 6, stride);
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expect(got).to.eql([0, 6]);
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});
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});
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describe('short line string', function () {
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const flatCoords = [0, 0, 1, 0, 1, 1, 0, 1];
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const stride = 2;
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it('returns whole line if straight enough', function () {
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const got = matchingChunk(Math.PI, flatCoords, 0, 8, stride);
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expect(got).to.eql([0, 8]);
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});
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it('returns first matching chunk if all chunk lengths are the same', function () {
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const got = matchingChunk(Math.PI / 4, flatCoords, 0, 8, stride);
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expect(got).to.eql([0, 4]);
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});
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});
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describe('longer line string', function () {
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const flatCoords = [
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0, 0, 1, 0, 1, 1, 0, 1, 0, -1, -1, -1, -1, 0, -1, 2, -2, 4,
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];
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const stride = 2;
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it('returns stright chunk from within the linestring', function () {
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const got = matchingChunk(0, flatCoords, 0, 18, stride);
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expect(got).to.eql([10, 16]);
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});
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it('returns long chunk at the end if angle and length within threshold', function () {
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const got = matchingChunk(Math.PI / 4, flatCoords, 0, 18, stride);
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expect(got).to.eql([10, 18]);
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});
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});
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});
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});
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