224 lines
7.1 KiB
JavaScript
224 lines
7.1 KiB
JavaScript
goog.provide('ol.test.geom.Circle');
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describe('ol.geom.Circle', function() {
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describe('with a unit circle', function() {
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var circle;
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beforeEach(function() {
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circle = new ol.geom.Circle([0, 0], 1);
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});
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describe('#clone', function() {
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it('returns a clone', function() {
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var clone = circle.clone();
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expect(clone).to.be.an(ol.geom.Circle);
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expect(clone.getCenter()).to.eql(circle.getCenter());
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expect(clone.getCenter()).not.to.be(circle.getCenter());
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expect(clone.getRadius()).to.be(circle.getRadius());
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});
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});
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describe('#containsCoordinate', function() {
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it('contains the center', function() {
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expect(circle.containsCoordinate([0, 0])).to.be(true);
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});
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it('contains points inside the perimeter', function() {
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expect(circle.containsCoordinate([0.5, 0.5])).to.be(true);
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expect(circle.containsCoordinate([-0.5, 0.5])).to.be(true);
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expect(circle.containsCoordinate([-0.5, -0.5])).to.be(true);
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expect(circle.containsCoordinate([0.5, -0.5])).to.be(true);
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});
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it('contains points on the perimeter', function() {
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expect(circle.containsCoordinate([1, 0])).to.be(true);
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expect(circle.containsCoordinate([0, 1])).to.be(true);
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expect(circle.containsCoordinate([-1, 0])).to.be(true);
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expect(circle.containsCoordinate([0, -1])).to.be(true);
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});
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it('does not contain points outside the perimeter', function() {
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expect(circle.containsCoordinate([2, 0])).to.be(false);
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expect(circle.containsCoordinate([1, 1])).to.be(false);
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expect(circle.containsCoordinate([-2, 0])).to.be(false);
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expect(circle.containsCoordinate([0, -2])).to.be(false);
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});
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});
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describe('#getCenter', function() {
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it('returns the expected value', function() {
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expect(circle.getCenter()).to.eql([0, 0]);
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});
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});
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describe('#getClosestPoint', function() {
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it('returns the closest point on the perimeter', function() {
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var closestPoint;
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closestPoint = circle.getClosestPoint([2, 0]);
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expect(closestPoint[0]).to.roughlyEqual(1, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(0, 1e-15);
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closestPoint = circle.getClosestPoint([2, 2]);
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expect(closestPoint[0]).to.roughlyEqual(Math.sqrt(0.5), 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(Math.sqrt(0.5), 1e-15);
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closestPoint = circle.getClosestPoint([0, 2]);
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expect(closestPoint[0]).to.roughlyEqual(0, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(1, 1e-15);
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closestPoint = circle.getClosestPoint([-2, 2]);
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expect(closestPoint[0]).to.roughlyEqual(-Math.sqrt(0.5), 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(Math.sqrt(0.5), 1e-15);
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closestPoint = circle.getClosestPoint([-2, 0]);
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expect(closestPoint[0]).to.roughlyEqual(-1, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(0, 1e-15);
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closestPoint = circle.getClosestPoint([-2, -2]);
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expect(closestPoint[0]).to.roughlyEqual(-Math.sqrt(0.5), 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(-Math.sqrt(0.5), 1e-15);
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closestPoint = circle.getClosestPoint([0, -2]);
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expect(closestPoint[0]).to.roughlyEqual(0, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(-1, 1e-15);
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closestPoint = circle.getClosestPoint([2, -2]);
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expect(closestPoint[0]).to.roughlyEqual(Math.sqrt(0.5), 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(-Math.sqrt(0.5), 1e-15);
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});
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it('maintains Z coordinates', function() {
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var circle = new ol.geom.Circle([0, 0, 1], 1);
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expect(circle.getLayout()).to.be(ol.geom.GeometryLayout.XYZ);
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var closestPoint = circle.getClosestPoint([2, 0]);
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expect(closestPoint).to.have.length(3);
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expect(closestPoint[0]).to.roughlyEqual(1, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(0, 1e-15);
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expect(closestPoint[2]).to.be(1);
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});
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it('maintains M coordinates', function() {
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var circle = new ol.geom.Circle([0, 0, 2], 1,
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ol.geom.GeometryLayout.XYM);
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var closestPoint = circle.getClosestPoint([2, 0]);
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expect(closestPoint).to.have.length(3);
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expect(closestPoint[0]).to.roughlyEqual(1, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(0, 1e-15);
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expect(closestPoint[2]).to.be(2);
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});
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it('maintains Z and M coordinates', function() {
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var circle = new ol.geom.Circle([0, 0, 1, 2], 1);
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expect(circle.getLayout()).to.be(ol.geom.GeometryLayout.XYZM);
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var closestPoint = circle.getClosestPoint([2, 0]);
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expect(closestPoint).to.have.length(4);
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expect(closestPoint[0]).to.roughlyEqual(1, 1e-15);
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expect(closestPoint[1]).to.roughlyEqual(0, 1e-15);
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expect(closestPoint[2]).to.be(1);
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expect(closestPoint[3]).to.be(2);
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});
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});
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describe('#getExtent', function() {
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it('returns the expected value', function() {
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expect(circle.getExtent()).to.eql([-1, -1, 1, 1]);
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});
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});
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describe('#getRadius', function() {
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it('returns the expected value', function() {
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expect(circle.getRadius()).to.be(1);
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});
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});
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describe('#getSimplifiedGeometry', function() {
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it('returns the same geometry', function() {
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expect(circle.getSimplifiedGeometry(1)).to.be(circle);
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});
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});
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describe('#getType', function() {
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it('returns the expected value', function() {
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expect(circle.getType()).to.be(ol.geom.GeometryType.CIRCLE);
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});
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});
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describe('#setCenter', function() {
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it('sets the center', function() {
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circle.setCenter([1, 2]);
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expect(circle.getCenter()).to.eql([1, 2]);
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});
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it('fires a change event', function() {
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var spy = sinon.spy();
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circle.on('change', spy);
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circle.setCenter([1, 2]);
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expect(spy.calledOnce).to.be(true);
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});
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});
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describe('#setFlatCoordinates', function() {
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it('sets both center and radius', function() {
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circle.setFlatCoordinates(ol.geom.GeometryLayout.XY, [1, 2, 4, 2]);
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expect(circle.getCenter()).to.eql([1, 2]);
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expect(circle.getRadius()).to.be(3);
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});
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it('fires a single change event', function() {
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var spy = sinon.spy();
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circle.on('change', spy);
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circle.setFlatCoordinates(ol.geom.GeometryLayout.XY, [1, 2, 4, 2]);
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expect(spy.calledOnce).to.be(true);
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});
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});
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describe('#setRadius', function() {
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it('sets the radius', function() {
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circle.setRadius(2);
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expect(circle.getRadius()).to.be(2);
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});
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it('fires a change event', function() {
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var spy = sinon.spy();
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circle.on('change', spy);
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circle.setRadius(2);
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expect(spy.calledOnce).to.be(true);
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});
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});
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describe('#transform', function() {
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it('throws an exception', function() {
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expect(function() {
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circle.applyTransform(ol.proj.identityTransform);
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}).to.throwException();
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});
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});
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});
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});
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goog.require('ol.geom.Circle');
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goog.require('ol.geom.GeometryType');
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goog.require('ol.proj');
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