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Specify an actual extent when loading features in the Webgl points renderer

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This means any specified loading strategy will be taken into account.

Also added some tests to make sure the interaction with the source is
correct.
This commit is contained in:
Olivier Guyot
2019-10-25 16:56:16 +02:00
parent 5d358a7367
commit cd3b222467
2 changed files with 47 additions and 14 deletions
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32
test/spec/ol/renderer/webgl/pointslayer.test.js
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@@ -104,7 +104,8 @@ describe('ol.renderer.webgl.PointsLayer', function() {
beforeEach(function() {
layer = new VectorLayer({
source: new VectorSource()
source: new VectorSource(),
renderBuffer: 10
});
renderer = new WebGLPointsLayerRenderer(layer, {
vertexShader: simpleVertexShader,
@@ -233,6 +234,35 @@ describe('ol.renderer.webgl.PointsLayer', function() {
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(2);
});
it('triggers source loading when the extent changes', function() {
const spy = sinon.spy(layer.getSource(), 'loadFeatures');
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(1);
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(1);
frameState.extent = [10, 20, 30, 40];
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(2);
expect(spy.getCall(1).args[0]).to.eql([0, 10, 40, 50]); // renderBuffer is 10
});
it('triggers source loading when the source revision changes', function() {
const spy = sinon.spy(layer.getSource(), 'loadFeatures');
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(1);
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(1);
layer.getSource().changed();
renderer.prepareFrame(frameState);
expect(spy.callCount).to.be(2);
});
});
describe('#forEachFeatureAtCoordinate', function() {