109 lines
3.3 KiB
JavaScript
109 lines
3.3 KiB
JavaScript
import Feature from '../../../../../src/ol/Feature.js';
|
|
import Point from '../../../../../src/ol/geom/Point.js';
|
|
import LineString from '../../../../../src/ol/geom/LineString.js';
|
|
import VectorLayer from '../../../../../src/ol/layer/Vector.js';
|
|
import VectorSource from '../../../../../src/ol/source/Vector.js';
|
|
import WebGLPointsLayerRenderer from '../../../../../src/ol/renderer/webgl/PointsLayer';
|
|
import {get as getProjection} from '../../../../../src/ol/proj';
|
|
import Polygon from '../../../../../src/ol/geom/Polygon';
|
|
|
|
|
|
describe('ol.renderer.webgl.PointsLayer', function() {
|
|
|
|
describe('constructor', function() {
|
|
|
|
let target;
|
|
|
|
beforeEach(function () {
|
|
target = document.createElement('div');
|
|
target.style.width = '256px';
|
|
target.style.height = '256px';
|
|
document.body.appendChild(target);
|
|
});
|
|
|
|
afterEach(function () {
|
|
document.body.removeChild(target);
|
|
});
|
|
|
|
it('creates a new instance', function () {
|
|
const layer = new VectorLayer({
|
|
source: new VectorSource()
|
|
});
|
|
const renderer = new WebGLPointsLayerRenderer(layer);
|
|
expect(renderer).to.be.a(WebGLPointsLayerRenderer);
|
|
});
|
|
|
|
});
|
|
|
|
describe('#prepareFrame', function() {
|
|
let layer, renderer, frameState;
|
|
|
|
beforeEach(function() {
|
|
layer = new VectorLayer({
|
|
source: new VectorSource()
|
|
});
|
|
renderer = new WebGLPointsLayerRenderer(layer);
|
|
const projection = getProjection('EPSG:3857');
|
|
frameState = {
|
|
skippedFeatureUids: {},
|
|
viewHints: [],
|
|
viewState: {
|
|
projection: projection,
|
|
resolution: 1,
|
|
rotation: 0,
|
|
center: [10, 10]
|
|
},
|
|
size: [256, 256]
|
|
};
|
|
});
|
|
|
|
it('calls WebGlHelper#prepareDraw', function() {
|
|
const spy = sinon.spy(renderer.helper_, 'prepareDraw');
|
|
renderer.prepareFrame(frameState);
|
|
expect(spy.called).to.be(true);
|
|
});
|
|
|
|
it('fills up a buffer with 2 triangles per point', function() {
|
|
layer.getSource().addFeature(new Feature({
|
|
geometry: new Point([10, 20])
|
|
}));
|
|
renderer.prepareFrame(frameState);
|
|
|
|
const attributePerVertex = 12;
|
|
expect(renderer.verticesBuffer_.getArray().length).to.eql(4 * attributePerVertex);
|
|
expect(renderer.indicesBuffer_.getArray().length).to.eql(6);
|
|
});
|
|
|
|
it('ignores geometries other than points', function() {
|
|
layer.getSource().addFeature(new Feature({
|
|
geometry: new LineString([[10, 20], [30, 20]])
|
|
}));
|
|
layer.getSource().addFeature(new Feature({
|
|
geometry: new Polygon([[10, 20], [30, 20], [30, 10], [10, 20]])
|
|
}));
|
|
renderer.prepareFrame(frameState);
|
|
|
|
expect(renderer.verticesBuffer_.getArray().length).to.eql(0);
|
|
expect(renderer.indicesBuffer_.getArray().length).to.eql(0);
|
|
});
|
|
|
|
it('clears the buffers when the features are gone', function() {
|
|
const source = layer.getSource();
|
|
source.addFeature(new Feature({
|
|
geometry: new Point([10, 20])
|
|
}));
|
|
source.removeFeature(source.getFeatures()[0]);
|
|
source.addFeature(new Feature({
|
|
geometry: new Point([10, 20])
|
|
}));
|
|
renderer.prepareFrame(frameState);
|
|
|
|
const attributePerVertex = 12;
|
|
expect(renderer.verticesBuffer_.getArray().length).to.eql(4 * attributePerVertex);
|
|
expect(renderer.indicesBuffer_.getArray().length).to.eql(6);
|
|
});
|
|
|
|
});
|
|
|
|
});
|