776 lines
22 KiB
JavaScript
776 lines
22 KiB
JavaScript
import Circle from '../../../../src/ol/geom/Circle.js';
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import LinearRing from '../../../../src/ol/geom/LinearRing.js';
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import Polygon, {
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fromCircle,
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fromExtent,
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} from '../../../../src/ol/geom/Polygon.js';
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import expect from '../../expect.js';
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import {boundingExtent, isEmpty} from '../../../../src/ol/extent.js';
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describe('ol/geom/Polygon.js', function () {
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it('cannot be constructed with a null geometry', function () {
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expect(function () {
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return new Polygon(null);
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}).to.throwException();
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});
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describe('construct empty', function () {
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let polygon;
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beforeEach(function () {
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polygon = new Polygon([]);
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});
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it('defaults to layout XY', function () {
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expect(polygon.getLayout()).to.be('XY');
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});
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it('has empty coordinates', function () {
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expect(polygon.getCoordinates()).to.be.empty();
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});
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it('has an empty extent', function () {
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expect(isEmpty(polygon.getExtent())).to.be(true);
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});
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it('has empty flat coordinates', function () {
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expect(polygon.getFlatCoordinates()).to.be.empty();
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});
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it('has stride the expected stride', function () {
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expect(polygon.getStride()).to.be(2);
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});
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it('can append linear rings', function () {
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polygon.appendLinearRing(
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new LinearRing([
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[1, 2],
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[3, 4],
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[5, 6],
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])
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);
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expect(polygon.getCoordinates()).to.eql([
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[
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[1, 2],
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[3, 4],
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[5, 6],
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],
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]);
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polygon.appendLinearRing(
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new LinearRing([
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[7, 8],
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[9, 10],
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[11, 12],
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])
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);
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expect(polygon.getCoordinates()).to.eql([
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[
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[1, 2],
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[3, 4],
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[5, 6],
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],
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[
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[7, 8],
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[9, 10],
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[11, 12],
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],
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]);
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});
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});
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describe('construct with 2D coordinates', function () {
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let outerRing, innerRing, polygon, flatCoordinates;
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let outsideOuter, inside, insideInner;
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beforeEach(function () {
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outerRing = [
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[0, 1],
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[1, 4],
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[4, 3],
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[3, 0],
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];
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innerRing = [
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[2, 2],
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[3, 2],
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[3, 3],
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[2, 3],
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];
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polygon = new Polygon([outerRing, innerRing]);
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flatCoordinates = [0, 1, 1, 4, 4, 3, 3, 0, 2, 2, 3, 2, 3, 3, 2, 3];
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outsideOuter = [0, 4];
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inside = [1.5, 1.5];
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insideInner = [2.5, 3.5];
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});
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it('has the expected layout', function () {
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expect(polygon.getLayout()).to.be('XY');
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});
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it('has the expected coordinates', function () {
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expect(polygon.getCoordinates()).to.eql([outerRing, innerRing]);
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});
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it('has the expected extent', function () {
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expect(polygon.getExtent()).to.eql([0, 0, 4, 4]);
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});
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it('has the expected flat coordinates', function () {
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expect(polygon.getFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('has stride the expected stride', function () {
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expect(polygon.getStride()).to.be(2);
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});
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it('can return individual rings', function () {
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expect(polygon.getLinearRing(0).getCoordinates()).to.eql(outerRing);
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expect(polygon.getLinearRing(1).getCoordinates()).to.eql(innerRing);
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});
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it('has the expected rings', function () {
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const linearRings = polygon.getLinearRings();
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expect(linearRings).to.be.an(Array);
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expect(linearRings).to.have.length(2);
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expect(linearRings[0]).to.be.an(LinearRing);
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expect(linearRings[0].getCoordinates()).to.eql(outerRing);
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expect(linearRings[1]).to.be.an(LinearRing);
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expect(linearRings[1].getCoordinates()).to.eql(innerRing);
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});
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it('does not reverse any rings', function () {
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outerRing.reverse();
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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const coordinates = polygon.getCoordinates();
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expect(coordinates[0]).to.eql(outerRing);
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expect(coordinates[1]).to.eql(innerRing);
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});
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it('does not contain outside coordinates', function () {
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expect(polygon.intersectsCoordinate(outsideOuter)).to.be(false);
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});
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it('does contain inside coordinates', function () {
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expect(polygon.intersectsCoordinate(inside)).to.be(true);
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});
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it('does not contain inside inner coordinates', function () {
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expect(polygon.intersectsCoordinate(insideInner)).to.be(false);
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});
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describe('#getCoordinates()', function () {
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const cw = [
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[-180, -90],
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[-180, 90],
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[180, 90],
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[180, -90],
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[-180, -90],
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];
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const ccw = [
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[-180, -90],
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[180, -90],
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[180, 90],
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[-180, 90],
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[-180, -90],
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];
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const right = new Polygon([ccw, cw]);
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const left = new Polygon([cw, ccw]);
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it('returns coordinates as they were constructed', function () {
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expect(right.getCoordinates()).to.eql([ccw, cw]);
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expect(left.getCoordinates()).to.eql([cw, ccw]);
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});
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it('can return coordinates with right-hand orientation', function () {
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expect(right.getCoordinates(true)).to.eql([ccw, cw]);
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expect(left.getCoordinates(true)).to.eql([ccw, cw]);
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});
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it('can return coordinates with left-hand orientation', function () {
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expect(right.getCoordinates(false)).to.eql([cw, ccw]);
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expect(left.getCoordinates(false)).to.eql([cw, ccw]);
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});
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});
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describe('#getOrientedFlatCoordinates', function () {
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it('reverses the outer ring if necessary', function () {
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outerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('reverses inner rings if necessary', function () {
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('reverses all rings if necessary', function () {
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outerRing.reverse();
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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});
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});
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describe('construct with 3D coordinates', function () {
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let outerRing, innerRing, polygon, flatCoordinates;
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let outsideOuter, inside, insideInner;
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beforeEach(function () {
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outerRing = [
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[0, 0, 1],
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[4, 4, 2],
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[4, 0, 3],
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];
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innerRing = [
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[2, 1, 4],
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[3, 1, 5],
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[3, 2, 6],
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];
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polygon = new Polygon([outerRing, innerRing]);
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flatCoordinates = [0, 0, 1, 4, 4, 2, 4, 0, 3, 2, 1, 4, 3, 1, 5, 3, 2, 6];
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outsideOuter = [1, 3];
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inside = [3.5, 0.5];
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insideInner = [2.9, 1.1];
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});
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it('has the expected layout', function () {
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expect(polygon.getLayout()).to.be('XYZ');
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});
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it('has the expected coordinates', function () {
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expect(polygon.getCoordinates()).to.eql([outerRing, innerRing]);
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});
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it('has the expected extent', function () {
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expect(polygon.getExtent()).to.eql([0, 0, 4, 4]);
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});
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it('has the expected flat coordinates', function () {
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expect(polygon.getFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('has stride the expected stride', function () {
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expect(polygon.getStride()).to.be(3);
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});
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it('does not contain outside coordinates', function () {
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expect(polygon.intersectsCoordinate(outsideOuter)).to.be(false);
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});
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it('does contain inside coordinates', function () {
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expect(polygon.intersectsCoordinate(inside)).to.be(true);
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});
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it('does not contain inside inner coordinates', function () {
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expect(polygon.intersectsCoordinate(insideInner)).to.be(false);
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});
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describe('#intersectsExtent', function () {
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it('does not intersect outside extent', function () {
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expect(polygon.intersectsExtent(boundingExtent([outsideOuter]))).to.be(
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false
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);
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});
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it('does intersect inside extent', function () {
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expect(polygon.intersectsExtent(boundingExtent([inside]))).to.be(true);
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});
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it('does intersect boundary extent', function () {
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const firstMidX = (outerRing[0][0] + outerRing[1][0]) / 2;
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const firstMidY = (outerRing[0][1] + outerRing[1][1]) / 2;
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expect(
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polygon.intersectsExtent(boundingExtent([[firstMidX, firstMidY]]))
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).to.be(true);
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});
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it('does not intersect extent fully contained by inner ring', function () {
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expect(polygon.intersectsExtent(boundingExtent([insideInner]))).to.be(
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false
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);
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});
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});
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describe('#getOrientedFlatCoordinates', function () {
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it('reverses the outer ring if necessary', function () {
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outerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('reverses inner rings if necessary', function () {
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('reverses all rings if necessary', function () {
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outerRing.reverse();
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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});
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});
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describe('construct with 3D coordinates and layout XYM', function () {
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let outerRing, innerRing, polygon, flatCoordinates;
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let outsideOuter, inside, insideInner;
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beforeEach(function () {
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outerRing = [
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[0, 0, 1],
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[4, 4, 2],
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[4, 0, 3],
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];
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innerRing = [
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[2, 1, 4],
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[3, 1, 5],
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[3, 2, 6],
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];
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polygon = new Polygon([outerRing, innerRing], 'XYM');
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flatCoordinates = [0, 0, 1, 4, 4, 2, 4, 0, 3, 2, 1, 4, 3, 1, 5, 3, 2, 6];
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outsideOuter = [1, 3];
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inside = [3.5, 0.5];
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insideInner = [2.9, 1.1];
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});
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it('has the expected layout', function () {
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expect(polygon.getLayout()).to.be('XYM');
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});
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it('has the expected coordinates', function () {
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expect(polygon.getCoordinates()).to.eql([outerRing, innerRing]);
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});
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it('has the expected extent', function () {
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expect(polygon.getExtent()).to.eql([0, 0, 4, 4]);
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});
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it('has the expected flat coordinates', function () {
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expect(polygon.getFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('has stride the expected stride', function () {
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expect(polygon.getStride()).to.be(3);
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});
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it('does not contain outside coordinates', function () {
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expect(polygon.intersectsCoordinate(outsideOuter)).to.be(false);
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});
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it('does contain inside coordinates', function () {
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expect(polygon.intersectsCoordinate(inside)).to.be(true);
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});
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it('does not contain inside inner coordinates', function () {
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expect(polygon.intersectsCoordinate(insideInner)).to.be(false);
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});
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describe('#intersectsExtent', function () {
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it('does not intersect outside extent', function () {
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expect(polygon.intersectsExtent(boundingExtent([outsideOuter]))).to.be(
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false
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);
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});
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it('does intersect inside extent', function () {
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expect(polygon.intersectsExtent(boundingExtent([inside]))).to.be(true);
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});
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it('does intersect boundary extent', function () {
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const firstMidX = (outerRing[0][0] + outerRing[1][0]) / 2;
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const firstMidY = (outerRing[0][1] + outerRing[1][1]) / 2;
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expect(
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polygon.intersectsExtent(boundingExtent([[firstMidX, firstMidY]]))
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).to.be(true);
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});
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it('does not intersect extent fully contained by inner ring', function () {
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expect(polygon.intersectsExtent(boundingExtent([insideInner]))).to.be(
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false
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);
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});
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});
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describe('#getOrientedFlatCoordinates', function () {
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it('reverses the outer ring if necessary', function () {
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outerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('reverses inner rings if necessary', function () {
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('reverses all rings if necessary', function () {
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outerRing.reverse();
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innerRing.reverse();
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polygon = new Polygon([outerRing, innerRing]);
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expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
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});
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});
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});
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describe('construct with 4D coordinates', function () {
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let outerRing, innerRing1, innerRing2, polygon, flatCoordinates;
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let outsideOuter, inside, insideInner1, insideInner2;
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beforeEach(function () {
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outerRing = [
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[0, 6, 1, 2],
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[6, 6, 3, 4],
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[3, 0, 5, 6],
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];
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innerRing1 = [
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[2, 4, 7, 8],
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[4, 4, 9, 10],
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[4, 5, 11, 12],
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[2, 5, 13, 14],
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];
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innerRing2 = [
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[3, 2, 15, 16],
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[4, 3, 17, 18],
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[2, 3, 19, 20],
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];
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polygon = new Polygon([outerRing, innerRing1, innerRing2]);
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flatCoordinates = [
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0,
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6,
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1,
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2,
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6,
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6,
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3,
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4,
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3,
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0,
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5,
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6,
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2,
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4,
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7,
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8,
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4,
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4,
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9,
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10,
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4,
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5,
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11,
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12,
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2,
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5,
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13,
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14,
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3,
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2,
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15,
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16,
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4,
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3,
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17,
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18,
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2,
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3,
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19,
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20,
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];
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outsideOuter = [1, 1];
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inside = [3, 1];
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insideInner1 = [2.5, 4.5];
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insideInner2 = [3, 2.5];
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});
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it('has the expected layout', function () {
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expect(polygon.getLayout()).to.be('XYZM');
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});
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it('has the expected coordinates', function () {
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expect(polygon.getCoordinates()).to.eql([
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outerRing,
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innerRing1,
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innerRing2,
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]);
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});
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it('has the expected extent', function () {
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expect(polygon.getExtent()).to.eql([0, 0, 6, 6]);
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});
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it('has the expected flat coordinates', function () {
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expect(polygon.getFlatCoordinates()).to.eql(flatCoordinates);
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});
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it('has stride the expected stride', function () {
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expect(polygon.getStride()).to.be(4);
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});
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it('does not contain outside coordinates', function () {
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expect(polygon.intersectsCoordinate(outsideOuter)).to.be(false);
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});
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it('does contain inside coordinates', function () {
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expect(polygon.intersectsCoordinate(inside)).to.be(true);
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});
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it('does not contain inside inner coordinates', function () {
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expect(polygon.intersectsCoordinate(insideInner1)).to.be(false);
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expect(polygon.intersectsCoordinate(insideInner2)).to.be(false);
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});
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describe('#intersectsExtent', function () {
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it('does not intersect outside extent', function () {
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expect(polygon.intersectsExtent(boundingExtent([outsideOuter]))).to.be(
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false
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);
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});
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it('does intersect inside extent', function () {
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expect(polygon.intersectsExtent(boundingExtent([inside]))).to.be(true);
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});
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it('does intersect boundary extent', function () {
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const firstMidX = (outerRing[0][0] + outerRing[1][0]) / 2;
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const firstMidY = (outerRing[0][1] + outerRing[1][1]) / 2;
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expect(
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polygon.intersectsExtent(boundingExtent([[firstMidX, firstMidY]]))
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).to.be(true);
|
|
});
|
|
|
|
it('does not intersect extent fully contained by inner ring', function () {
|
|
expect(polygon.intersectsExtent(boundingExtent([insideInner1]))).to.be(
|
|
false
|
|
);
|
|
expect(polygon.intersectsExtent(boundingExtent([insideInner2]))).to.be(
|
|
false
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('#getOrientedFlatCoordinates', function () {
|
|
it('reverses the outer ring if necessary', function () {
|
|
outerRing.reverse();
|
|
polygon = new Polygon([outerRing, innerRing1, innerRing2]);
|
|
expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
|
|
});
|
|
|
|
it('reverses inner rings if necessary', function () {
|
|
innerRing1.reverse();
|
|
innerRing2.reverse();
|
|
polygon = new Polygon([outerRing, innerRing1, innerRing2]);
|
|
expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
|
|
});
|
|
|
|
it('reverses all rings if necessary', function () {
|
|
outerRing.reverse();
|
|
innerRing1.reverse();
|
|
innerRing2.reverse();
|
|
polygon = new Polygon([outerRing, innerRing1, innerRing2]);
|
|
expect(polygon.getOrientedFlatCoordinates()).to.eql(flatCoordinates);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('with a simple polygon', function () {
|
|
let polygon;
|
|
beforeEach(function () {
|
|
polygon = new Polygon([
|
|
[
|
|
[3, 0],
|
|
[1, 3],
|
|
[0, 6],
|
|
[2, 6],
|
|
[3, 7],
|
|
[4, 6],
|
|
[6, 6],
|
|
[4, 3],
|
|
],
|
|
]);
|
|
});
|
|
|
|
describe('#getSimplifiedGeometry', function () {
|
|
it('returns the expected result', function () {
|
|
const simplifiedGeometry = polygon.getSimplifiedGeometry(9);
|
|
expect(simplifiedGeometry).to.be.an(Polygon);
|
|
expect(simplifiedGeometry.getCoordinates()).to.eql([
|
|
[
|
|
[3, 0],
|
|
[0, 3],
|
|
[0, 6],
|
|
[6, 6],
|
|
[3, 3],
|
|
],
|
|
]);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('#scale()', function () {
|
|
it('scales a polygon', function () {
|
|
const geom = new Polygon([
|
|
[
|
|
[-1, -2],
|
|
[1, -2],
|
|
[1, 2],
|
|
[-1, 2],
|
|
[-1, -2],
|
|
],
|
|
]);
|
|
geom.scale(10);
|
|
const coordinates = geom.getCoordinates();
|
|
expect(coordinates).to.eql([
|
|
[
|
|
[-10, -20],
|
|
[10, -20],
|
|
[10, 20],
|
|
[-10, 20],
|
|
[-10, -20],
|
|
],
|
|
]);
|
|
});
|
|
|
|
it('accepts sx and sy', function () {
|
|
const geom = new Polygon([
|
|
[
|
|
[-1, -2],
|
|
[1, -2],
|
|
[1, 2],
|
|
[-1, 2],
|
|
[-1, -2],
|
|
],
|
|
]);
|
|
geom.scale(2, 3);
|
|
const coordinates = geom.getCoordinates();
|
|
expect(coordinates).to.eql([
|
|
[
|
|
[-2, -6],
|
|
[2, -6],
|
|
[2, 6],
|
|
[-2, 6],
|
|
[-2, -6],
|
|
],
|
|
]);
|
|
});
|
|
|
|
it('accepts an anchor', function () {
|
|
const geom = new Polygon([
|
|
[
|
|
[-1, -2],
|
|
[1, -2],
|
|
[1, 2],
|
|
[-1, 2],
|
|
[-1, -2],
|
|
],
|
|
]);
|
|
geom.scale(3, 2, [-1, -2]);
|
|
const coordinates = geom.getCoordinates();
|
|
expect(coordinates).to.eql([
|
|
[
|
|
[-1, -2],
|
|
[5, -2],
|
|
[5, 6],
|
|
[-1, 6],
|
|
[-1, -2],
|
|
],
|
|
]);
|
|
});
|
|
});
|
|
|
|
describe('#getInteriorPoint', function () {
|
|
it('returns XYM point with intersection width as M', function () {
|
|
const geom = new Polygon([
|
|
[
|
|
[0, 0],
|
|
[0, 1],
|
|
[1, 1],
|
|
[1, 0],
|
|
[0, 0],
|
|
],
|
|
]);
|
|
const interiorPoint = geom.getInteriorPoint();
|
|
expect(interiorPoint.getType()).to.be('Point');
|
|
expect(interiorPoint.layout).to.be('XYM');
|
|
expect(interiorPoint.getCoordinates()).to.eql([0.5, 0.5, 1]);
|
|
});
|
|
|
|
it('returns XYM point for donut polygons', function () {
|
|
const geom = new Polygon([
|
|
[
|
|
[0.5, 0.5],
|
|
[0.5, 2.5],
|
|
[2.5, 2.5],
|
|
[2.5, 0.5],
|
|
[0.5, 0.5],
|
|
],
|
|
[
|
|
[1, 1],
|
|
[2, 1],
|
|
[2, 2],
|
|
[1, 2],
|
|
[1, 1],
|
|
],
|
|
]);
|
|
const interiorPoint = geom.getInteriorPoint();
|
|
expect(interiorPoint.getType()).to.be('Point');
|
|
expect(interiorPoint.layout).to.be('XYM');
|
|
expect(interiorPoint.getCoordinates()).to.eql([0.75, 1.5, 0.5]);
|
|
});
|
|
});
|
|
|
|
describe('fromExtent()', function () {
|
|
it('creates the correct polygon', function () {
|
|
const extent = [1, 2, 3, 5];
|
|
const polygon = fromExtent(extent);
|
|
const flatCoordinates = polygon.getFlatCoordinates();
|
|
expect(flatCoordinates).to.eql([1, 2, 1, 5, 3, 5, 3, 2, 1, 2]);
|
|
const orientedFlatCoordinates = polygon.getOrientedFlatCoordinates();
|
|
expect(orientedFlatCoordinates).to.eql([1, 2, 1, 5, 3, 5, 3, 2, 1, 2]);
|
|
});
|
|
});
|
|
|
|
describe('fromCircle()', function () {
|
|
it('creates a regular polygon', function () {
|
|
const circle = new Circle([0, 0, 0], 1, 'XYZ');
|
|
const polygon = fromCircle(circle);
|
|
const coordinates = polygon.getLinearRing(0).getCoordinates();
|
|
expect(coordinates[0].length).to.eql(3);
|
|
expect(coordinates[0][2]).to.eql(0);
|
|
expect(coordinates[32]).to.eql(coordinates[0]);
|
|
// east
|
|
expect(coordinates[0][0]).to.roughlyEqual(1, 1e-9);
|
|
expect(coordinates[0][1]).to.roughlyEqual(0, 1e-9);
|
|
// south
|
|
expect(coordinates[8][0]).to.roughlyEqual(0, 1e-9);
|
|
expect(coordinates[8][1]).to.roughlyEqual(1, 1e-9);
|
|
// west
|
|
expect(coordinates[16][0]).to.roughlyEqual(-1, 1e-9);
|
|
expect(coordinates[16][1]).to.roughlyEqual(0, 1e-9);
|
|
// north
|
|
expect(coordinates[24][0]).to.roughlyEqual(0, 1e-9);
|
|
expect(coordinates[24][1]).to.roughlyEqual(-1, 1e-9);
|
|
});
|
|
|
|
it('creates a regular polygon with custom sides and angle', function () {
|
|
const circle = new Circle([0, 0], 1);
|
|
const polygon = fromCircle(circle, 4, Math.PI / 2);
|
|
const coordinates = polygon.getLinearRing(0).getCoordinates();
|
|
expect(coordinates[4]).to.eql(coordinates[0]);
|
|
expect(coordinates[0][0]).to.roughlyEqual(0, 1e-9);
|
|
expect(coordinates[0][1]).to.roughlyEqual(1, 1e-9);
|
|
});
|
|
|
|
it('creates a regular polygon, maintaining ZM values', () => {
|
|
const circle = new Circle([0, 0, 1, 1], 1, 'XYZM');
|
|
const polygon = fromCircle(circle);
|
|
const coordinates = polygon.getLinearRing(0).getCoordinates();
|
|
expect(coordinates[0][2]).to.eql(1);
|
|
expect(coordinates[0][3]).to.eql(1);
|
|
});
|
|
});
|
|
});
|