openlayers
Version:
Build tools and sources for developing OpenLayers based mapping applications
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JavaScript
goog.provide('ol.test.render.webgl.CircleReplay');
goog.require('ol');
goog.require('ol.Feature');
goog.require('ol.geom.Circle');
goog.require('ol.render.webgl.circlereplay.defaultshader');
goog.require('ol.render.webgl.CircleReplay');
goog.require('ol.style.Fill');
goog.require('ol.style.Stroke');
describe('ol.render.webgl.CircleReplay', function() {
var replay;
var strokeStyle = new ol.style.Stroke({
color: [0, 255, 0, 0.4]
});
var fillStyle = new ol.style.Fill({
color: [255, 0, 0, 1]
});
beforeEach(function() {
var tolerance = 0.1;
var maxExtent = [-10000, -20000, 10000, 20000];
replay = new ol.render.webgl.CircleReplay(tolerance, maxExtent);
});
describe('#setFillStrokeStyle', function() {
it('set expected states', function() {
replay.setFillStrokeStyle(fillStyle, strokeStyle);
expect(replay.state_).not.be(null);
expect(replay.state_.strokeColor).to.eql([0, 1, 0, 0.4]);
expect(replay.state_.lineWidth).to.be(1);
expect(replay.state_.fillColor).to.eql([1, 0, 0, 1]);
expect(replay.state_.changed).to.be(true);
expect(replay.styles_).to.have.length(1);
});
it('sets a transparent stroke, if none provided', function() {
replay.setFillStrokeStyle(fillStyle, null);
expect(replay.state_.strokeColor).to.eql([0, 0, 0, 0]);
});
it('sets a transparent fill, if none provided', function() {
replay.setFillStrokeStyle(null, strokeStyle);
expect(replay.state_.fillColor).to.eql([0, 0, 0, 0]);
});
});
describe('#drawCircle', function() {
it('sets the buffer data', function() {
var circle = new ol.geom.Circle([0,0], 5000);
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(circle, null);
expect(replay.vertices).to.have.length(16);
expect(replay.indices).to.have.length(6);
expect(replay.state_.changed).to.be(false);
expect(replay.startIndices).to.have.length(1);
expect(replay.startIndicesFeature).to.have.length(1);
expect(replay.radius_).to.be(5000);
});
it('does not draw if radius is zero', function() {
var circle = new ol.geom.Circle([0,0], 0);
replay.drawCircle(circle, null);
expect(replay.vertices).to.have.length(0);
expect(replay.indices).to.have.length(0);
expect(replay.startIndices).to.have.length(0);
expect(replay.startIndicesFeature).to.have.length(0);
});
it('resets state and removes style if it belongs to a zero radius circle', function() {
var circle = new ol.geom.Circle([0,0], 0);
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.setFillStrokeStyle(null, strokeStyle);
replay.drawCircle(circle, null);
expect(replay.styles_).to.have.length(1);
expect(replay.state_).not.be(null);
expect(replay.state_.strokeColor).to.eql([0, 1, 0, 0.4]);
expect(replay.state_.lineWidth).to.be(1);
expect(replay.state_.fillColor).to.eql([1, 0, 0, 1]);
expect(replay.state_.changed).to.be(false);
});
});
describe('#drawCoordinates_', function() {
it('envelopes the circle into a right isosceles triangle', function() {
replay.radius_ = 5000;
replay.drawCoordinates_([0, 0], 0, 2, 2);
expect(replay.vertices).to.eql([0, 0, 0, 5000, 0, 0, 1, 5000,
0, 0, 2, 5000, 0, 0, 3, 5000]);
expect(replay.indices).to.eql([0, 1, 2, 2, 3, 0]);
});
});
describe('#setUpProgram', function() {
var context, gl;
beforeEach(function() {
context = {
getProgram: function() {},
useProgram: function() {}
};
gl = {
enableVertexAttribArray: function() {},
vertexAttribPointer: function() {},
uniform1f: function() {},
uniform2fv: function() {},
getUniformLocation: function() {},
getAttribLocation: function() {}
};
});
it('returns the locations used by the shaders', function() {
var locations = replay.setUpProgram(gl, context, [2, 2], 1);
expect(locations).to.be.a(
ol.render.webgl.circlereplay.defaultshader.Locations);
});
it('gets and compiles the shaders', function() {
sinon.spy(context, 'getProgram');
sinon.spy(context, 'useProgram');
replay.setUpProgram(gl, context, [2, 2], 1);
expect(context.getProgram.calledWithExactly(
ol.render.webgl.circlereplay.defaultshader.fragment,
ol.render.webgl.circlereplay.defaultshader.vertex)).to.be(true);
expect(context.useProgram.calledOnce).to.be(true);
});
it('initializes the attrib pointers', function() {
sinon.spy(gl, 'getAttribLocation');
sinon.spy(gl, 'vertexAttribPointer');
sinon.spy(gl, 'enableVertexAttribArray');
replay.setUpProgram(gl, context, [2, 2], 1);
expect(gl.vertexAttribPointer.callCount).to.be(gl.getAttribLocation.callCount);
expect(gl.enableVertexAttribArray.callCount).to.be(
gl.getAttribLocation.callCount);
});
});
describe('#shutDownProgram', function() {
var context, gl;
beforeEach(function() {
context = {
getProgram: function() {},
useProgram: function() {}
};
gl = {
enableVertexAttribArray: function() {},
disableVertexAttribArray: function() {},
vertexAttribPointer: function() {},
uniform1f: function() {},
uniform2fv: function() {},
getUniformLocation: function() {},
getAttribLocation: function() {}
};
});
it('disables the attrib pointers', function() {
sinon.spy(gl, 'getAttribLocation');
sinon.spy(gl, 'disableVertexAttribArray');
var locations = replay.setUpProgram(gl, context, [2, 2], 1);
replay.shutDownProgram(gl, locations);
expect(gl.disableVertexAttribArray.callCount).to.be(
gl.getAttribLocation.callCount);
});
});
describe('#drawReplay', function() {
var gl, context;
var feature1 = new ol.Feature({
geometry: new ol.geom.Circle([0, 0], 5000)
});
var feature2 = new ol.Feature({
geometry: new ol.geom.Circle([10, 10], 5000)
});
var feature3 = new ol.Feature({
geometry: new ol.geom.Circle([20, 20], 5000)
});
beforeEach(function() {
gl = {};
context = {};
replay.setFillStyle_ = function() {};
replay.setStrokeStyle_ = function() {};
replay.drawElements = function() {};
sinon.spy(replay, 'setFillStyle_');
sinon.spy(replay, 'setStrokeStyle_');
sinon.spy(replay, 'drawElements');
});
it('draws the elements in a single call if they have the same style', function() {
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature1.getGeometry(), feature1);
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature2.getGeometry(), feature2);
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature3.getGeometry(), feature3);
replay.startIndices.push(replay.indices.length);
replay.drawReplay(gl, context, {}, false);
expect(replay.setFillStyle_.calledOnce).to.be(true);
expect(replay.setStrokeStyle_.calledOnce).to.be(true);
expect(replay.drawElements.calledOnce).to.be(true);
});
it('draws the elements in batches if there are multiple styles', function() {
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature1.getGeometry(), feature1);
replay.setFillStrokeStyle(fillStyle, null);
replay.drawCircle(feature2.getGeometry(), feature2);
replay.setFillStrokeStyle(strokeStyle, null);
replay.drawCircle(feature3.getGeometry(), feature3);
replay.startIndices.push(replay.indices.length);
replay.drawReplay(gl, context, {}, false);
expect(replay.setFillStyle_.calledThrice).to.be(true);
expect(replay.setStrokeStyle_.calledThrice).to.be(true);
expect(replay.drawElements.calledThrice).to.be(true);
});
it('can skip elements if needed', function() {
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature1.getGeometry(), feature1);
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature2.getGeometry(), feature2);
replay.setFillStrokeStyle(fillStyle, strokeStyle);
replay.drawCircle(feature3.getGeometry(), feature3);
replay.startIndices.push(replay.indices.length);
var skippedFeatHash = {};
skippedFeatHash[ol.getUid(feature2).toString()] = true;
replay.drawReplay(gl, context, skippedFeatHash, false);
expect(replay.setFillStyle_.calledOnce).to.be(true);
expect(replay.setStrokeStyle_.calledOnce).to.be(true);
expect(replay.drawElements.calledTwice).to.be(true);
});
});
});