202 lines
6.5 KiB
JavaScript
202 lines
6.5 KiB
JavaScript
goog.provide('ol.test.geom.flat');
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describe('ol.geom.flat', function() {
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describe('ol.geom.flat.deflateCoordinates', function() {
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var flatCoordinates;
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beforeEach(function() {
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flatCoordinates = [];
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});
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it('flattens coordinates', function() {
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var offset = ol.geom.flat.deflateCoordinates(
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flatCoordinates, 0, [[1, 2], [3, 4]], 2);
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expect(offset).to.be(4);
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expect(flatCoordinates).to.eql([1, 2, 3, 4]);
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});
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});
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describe('ol.geom.flat.deflateCoordinatess', function() {
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var flatCoordinates;
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beforeEach(function() {
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flatCoordinates = [];
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});
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it('flattens arrays of coordinates', function() {
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var ends = ol.geom.flat.deflateCoordinatess(flatCoordinates, 0,
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[[[1, 2], [3, 4]], [[5, 6], [7, 8]]], 2);
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expect(ends).to.eql([4, 8]);
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expect(flatCoordinates).to.eql([1, 2, 3, 4, 5, 6, 7, 8]);
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});
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});
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describe('ol.geom.flat.inflateCoordinates', function() {
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it('inflates coordinates', function() {
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var coordinates = ol.geom.flat.inflateCoordinates([1, 2, 3, 4], 0, 4, 2);
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expect(coordinates).to.eql([[1, 2], [3, 4]]);
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});
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});
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describe('ol.geom.flat.inflateCoordinatess', function() {
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it('inflates arrays of coordinates', function() {
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var coordinatess = ol.geom.flat.inflateCoordinatess(
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[1, 2, 3, 4, 5, 6, 7, 8], 0, [4, 8], 2);
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expect(coordinatess).to.eql([[[1, 2], [3, 4]], [[5, 6], [7, 8]]]);
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});
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});
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describe('ol.geom.flat.linearRingIsClockwise', function() {
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it('identifies clockwise rings', function() {
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var flatCoordinates = [0, 1, 1, 4, 4, 3, 3, 0];
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var isClockwise = ol.geom.flat.linearRingIsClockwise(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(isClockwise).to.be(true);
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});
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it('identifies anti-clockwise rings', function() {
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var flatCoordinates = [2, 2, 3, 2, 3, 3, 2, 3];
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var isClockwise = ol.geom.flat.linearRingIsClockwise(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(isClockwise).to.be(false);
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});
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});
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describe('ol.geom.flat.reverseCoordinates', function() {
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describe('with a stride of 2', function() {
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it('can reverse empty flat coordinates', function() {
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var flatCoordinates = [];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.be.empty();
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});
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it('can reverse one flat coordinates', function() {
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var flatCoordinates = [1, 2];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([1, 2]);
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});
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it('can reverse two flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([3, 4, 1, 2]);
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});
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it('can reverse three flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([5, 6, 3, 4, 1, 2]);
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});
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it('can reverse four flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 2);
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expect(flatCoordinates).to.eql([7, 8, 5, 6, 3, 4, 1, 2]);
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});
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});
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describe('with a stride of 3', function() {
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it('can reverse empty flat coordinates', function() {
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var flatCoordinates = [];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.be.empty();
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});
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it('can reverse one flat coordinates', function() {
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var flatCoordinates = [1, 2, 3];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([1, 2, 3]);
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});
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it('can reverse two flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([4, 5, 6, 1, 2, 3]);
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});
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it('can reverse three flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8, 9];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([7, 8, 9, 4, 5, 6, 1, 2, 3]);
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});
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it('can reverse four flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 3);
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expect(flatCoordinates).to.eql([10, 11, 12, 7, 8, 9, 4, 5, 6, 1, 2, 3]);
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});
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});
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describe('with a stride of 4', function() {
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it('can reverse empty flat coordinates', function() {
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var flatCoordinates = [];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.be.empty();
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});
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it('can reverse one flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql([1, 2, 3, 4]);
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});
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it('can reverse two flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql([5, 6, 7, 8, 1, 2, 3, 4]);
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});
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it('can reverse three flat coordinates', function() {
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var flatCoordinates = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql([9, 10, 11, 12, 5, 6, 7, 8, 1, 2, 3, 4]);
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});
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it('can reverse four flat coordinates', function() {
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var flatCoordinates =
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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16];
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ol.geom.flat.reverseCoordinates(
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flatCoordinates, 0, flatCoordinates.length, 4);
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expect(flatCoordinates).to.eql(
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[13, 14, 15, 16, 9, 10, 11, 12, 5, 6, 7, 8, 1, 2, 3, 4]);
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});
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});
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});
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});
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goog.require('ol.geom.flat');
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