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Tim Schaub
2021-04-27 15:41:14 -07:00
parent 278e355795
commit 490cfabe91
599 changed files with 12374 additions and 1603 deletions
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test/browser/spec/ol/geom/flat/orient.test.js Normal file
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import {
linearRingIsClockwise,
linearRingsAreOriented,
linearRingssAreOriented,
orientLinearRings,
orientLinearRingsArray,
} from '../../../../../../src/ol/geom/flat/orient.js';
describe('ol.geom.flat.orient', function () {
describe('ol.geom.flat.orient.linearRingIsClockwise', function () {
it('identifies clockwise rings', function () {
const flatCoordinates = [0, 1, 1, 4, 4, 3, 3, 0];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(true);
});
it('identifies anti-clockwise rings', function () {
const flatCoordinates = [2, 2, 3, 2, 3, 3, 2, 3];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(false);
});
it('identifies clockwise with duplicated coordinates', function () {
const flatCoordinates = [0, 1, 0, 1, 1, 4, 1, 4, 4, 3, 4, 3, 3, 0, 3, 0];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(true);
});
it('identifies anti-clockwise with duplicated coordinates', function () {
const flatCoordinates = [2, 2, 2, 2, 3, 2, 3, 2, 3, 3, 3, 3, 2, 3, 2, 3];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(false);
});
it('identifies clockwise when last coordinate equals first', function () {
const flatCoordinates = [0, 1, 1, 4, 4, 3, 3, 0, 0, 1];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(true);
});
it('identifies anti-clockwise when last coordinate equals first', function () {
const flatCoordinates = [2, 2, 3, 2, 3, 3, 2, 3, 2, 2];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(false);
});
it('returns undefined when ring has too few vertices', function () {
const flatCoordinates = [2, 2, 3, 2];
const isClockwise = linearRingIsClockwise(
flatCoordinates,
0,
flatCoordinates.length,
2
);
expect(isClockwise).to.be(undefined);
});
});
describe('ol.geom.flat.orient.linearRingsAreOriented', function () {
const oriented = linearRingsAreOriented;
const rightCoords = [
-180,
-90,
180,
-90,
180,
90,
-180,
90,
-180,
-90,
-100,
-45,
-100,
45,
100,
45,
100,
-45,
-100,
-45,
];
const leftCoords = [
-180,
-90,
-180,
90,
180,
90,
180,
-90,
-180,
-90,
-100,
-45,
100,
-45,
100,
45,
-100,
45,
-100,
-45,
];
const ends = [10, 20];
it('checks for left-hand orientation by default', function () {
expect(oriented(rightCoords, 0, ends, 2)).to.be(false);
expect(oriented(leftCoords, 0, ends, 2)).to.be(true);
});
it('can check for right-hand orientation', function () {
expect(oriented(rightCoords, 0, ends, 2, true)).to.be(true);
expect(oriented(leftCoords, 0, ends, 2, true)).to.be(false);
});
});
describe('ol.geom.flat.orient.linearRingssAreOriented', function () {
const oriented = linearRingssAreOriented;
const rightCoords = [
-180,
-90,
180,
-90,
180,
90,
-180,
90,
-180,
-90,
-100,
-45,
-100,
45,
100,
45,
100,
-45,
-100,
-45,
-180,
-90,
180,
-90,
180,
90,
-180,
90,
-180,
-90,
-100,
-45,
-100,
45,
100,
45,
100,
-45,
-100,
-45,
];
const leftCoords = [
-180,
-90,
-180,
90,
180,
90,
180,
-90,
-180,
-90,
-100,
-45,
100,
-45,
100,
45,
-100,
45,
-100,
-45,
-180,
-90,
-180,
90,
180,
90,
180,
-90,
-180,
-90,
-100,
-45,
100,
-45,
100,
45,
-100,
45,
-100,
-45,
];
const ends = [
[10, 20],
[30, 40],
];
it('checks for left-hand orientation by default', function () {
expect(oriented(rightCoords, 0, ends, 2)).to.be(false);
expect(oriented(leftCoords, 0, ends, 2)).to.be(true);
});
it('can check for right-hand orientation', function () {
expect(oriented(rightCoords, 0, ends, 2, true)).to.be(true);
expect(oriented(leftCoords, 0, ends, 2, true)).to.be(false);
});
});
describe('ol.geom.flat.orient.orientLinearRings', function () {
const orient = orientLinearRings;
const rightCoords = [
-180,
-90,
180,
-90,
180,
90,
-180,
90,
-180,
-90,
-100,
-45,
-100,
45,
100,
45,
100,
-45,
-100,
-45,
];
const leftCoords = [
-180,
-90,
-180,
90,
180,
90,
180,
-90,
-180,
-90,
-100,
-45,
100,
-45,
100,
45,
-100,
45,
-100,
-45,
];
const ends = [10, 20];
it('orients using the left-hand rule by default', function () {
const rightClone = rightCoords.slice();
orient(rightClone, 0, ends, 2);
expect(rightClone).to.eql(leftCoords);
const leftClone = leftCoords.slice();
orient(leftClone, 0, ends, 2);
expect(leftClone).to.eql(leftCoords);
});
it('can orient using the right-hand rule', function () {
const rightClone = rightCoords.slice();
orient(rightClone, 0, ends, 2, true);
expect(rightClone).to.eql(rightCoords);
const leftClone = leftCoords.slice();
orient(leftClone, 0, ends, 2, true);
expect(leftClone).to.eql(rightCoords);
});
});
describe('ol.geom.flat.orient.orientLinearRingsArray', function () {
const orient = orientLinearRingsArray;
const rightCoords = [
-180,
-90,
180,
-90,
180,
90,
-180,
90,
-180,
-90,
-100,
-45,
-100,
45,
100,
45,
100,
-45,
-100,
-45,
-180,
-90,
180,
-90,
180,
90,
-180,
90,
-180,
-90,
-100,
-45,
-100,
45,
100,
45,
100,
-45,
-100,
-45,
];
const leftCoords = [
-180,
-90,
-180,
90,
180,
90,
180,
-90,
-180,
-90,
-100,
-45,
100,
-45,
100,
45,
-100,
45,
-100,
-45,
-180,
-90,
-180,
90,
180,
90,
180,
-90,
-180,
-90,
-100,
-45,
100,
-45,
100,
45,
-100,
45,
-100,
-45,
];
const ends = [
[10, 20],
[30, 40],
];
it('orients using the left-hand rule by default', function () {
const rightClone = rightCoords.slice();
orient(rightClone, 0, ends, 2);
expect(rightClone).to.eql(leftCoords);
const leftClone = leftCoords.slice();
orient(leftClone, 0, ends, 2);
expect(leftClone).to.eql(leftCoords);
});
it('can orient using the right-hand rule', function () {
const rightClone = rightCoords.slice();
orient(rightClone, 0, ends, 2, true);
expect(rightClone).to.eql(rightCoords);
const leftClone = leftCoords.slice();
orient(leftClone, 0, ends, 2, true);
expect(leftClone).to.eql(rightCoords);
});
});
});