b52d283641
The ol.geom.SharedVertices structure represents a flattened array of vertex coordinates. This is intended to support optimal WebGL rendering.
107 lines
2.9 KiB
JavaScript
107 lines
2.9 KiB
JavaScript
goog.provide('ol.test.geom.Point');
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describe('ol.geom.Point', function() {
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describe('constructor', function() {
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it('creates a point from an array', function() {
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var point = new ol.geom.Point([10, 20]);
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expect(point).toBeA(ol.geom.Point);
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expect(point).toBeA(ol.geom.Geometry);
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});
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it('accepts shared vertices', function() {
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var vertices = new ol.geom.SharedVertices();
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var p1 = new ol.geom.Point([10, 20], vertices);
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var p2 = new ol.geom.Point([30, 40], vertices);
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var p3 = new ol.geom.Point([50, 60], vertices);
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expect(p1.getCoordinates()).toEqual([10, 20]);
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expect(p2.getCoordinates()).toEqual([30, 40]);
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expect(p3.getCoordinates()).toEqual([50, 60]);
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});
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it('throws when given with insufficient dimensions', function() {
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expect(function() {
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var point = new ol.geom.Point([1]);
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}).toThrow();
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});
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});
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describe('#dimension', function() {
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it('can be 2', function() {
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var point = new ol.geom.Point([10, 20]);
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expect(point.dimension).toBe(2);
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});
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it('can be 3', function() {
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var point = new ol.geom.Point([10, 20, 30]);
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expect(point.dimension).toBe(3);
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});
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});
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describe('#getBounds()', function() {
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it('returns the bounding extent', function() {
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var point = new ol.geom.Point([10, 20]);
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var bounds = point.getBounds();
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expect(bounds.minX).toBe(10);
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expect(bounds.minY).toBe(20);
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expect(bounds.maxX).toBe(10);
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expect(bounds.maxY).toBe(20);
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});
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});
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describe('#getCoordinates()', function() {
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it('returns an array', function() {
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var point = new ol.geom.Point([10, 20]);
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expect(point.getCoordinates()).toEqual([10, 20]);
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});
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});
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describe('#getSharedId()', function() {
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it('returns identifiers', function() {
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var vertices = new ol.geom.SharedVertices();
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var p1 = new ol.geom.Point([10, 20], vertices);
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var p2 = new ol.geom.Point([30, 40], vertices);
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var p3 = new ol.geom.Point([50, 60], vertices);
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var id1 = p1.getSharedId();
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var id2 = p2.getSharedId();
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var id3 = p3.getSharedId();
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expect(vertices.coordinates).toEqual(
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[10, 20, 30, 40, 50, 60]);
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expect(vertices.getStart(id1)).toBe(0);
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expect(vertices.getCount(id1)).toBe(1);
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expect(vertices.get(id1, 0, 0)).toBe(10);
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expect(vertices.get(id1, 0, 1)).toBe(20);
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expect(vertices.getStart(id2)).toBe(2);
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expect(vertices.getCount(id2)).toBe(1);
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expect(vertices.get(id2, 0, 0)).toBe(30);
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expect(vertices.get(id2, 0, 1)).toBe(40);
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expect(vertices.getStart(id3)).toBe(4);
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expect(vertices.getCount(id3)).toBe(1);
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expect(vertices.get(id3, 0, 0)).toBe(50);
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expect(vertices.get(id3, 0, 1)).toBe(60);
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});
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});
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});
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goog.require('ol.geom.Geometry');
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goog.require('ol.geom.Point');
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goog.require('ol.geom.SharedVertices');
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