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Simplify to return false if layer has no source

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This commit is contained in:
mike-000
2020-01-06 17:31:38 +00:00
committed by GitHub
parent f48704cac4
commit cb665b7ea7
1 changed files with 4 additions and 11 deletions
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src/ol/renderer/canvas/VectorLayer.js
+4 -11
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@@ -11,16 +11,6 @@ import CanvasLayerRenderer from './Layer.js';
import {defaultOrder as defaultRenderOrder, getTolerance as getRenderTolerance, getSquaredTolerance as getSquaredRenderTolerance, renderFeature} from '../vector.js'; import {defaultOrder as defaultRenderOrder, getTolerance as getRenderTolerance, getSquaredTolerance as getSquaredRenderTolerance, renderFeature} from '../vector.js';
import {toString as transformToString, makeScale, makeInverse, apply} from '../../transform.js'; import {toString as transformToString, makeScale, makeInverse, apply} from '../../transform.js';
import {createHitDetectionImageData, hitDetect} from '../../render/canvas/hitdetect.js'; import {createHitDetectionImageData, hitDetect} from '../../render/canvas/hitdetect.js';
import VectorSource from '../../source/Vector.js';
/**
* @const
* @type {VectorSource}
* @private
*/
const emptySource = new VectorSource();
/** /**
* @classdesc * @classdesc
@@ -338,7 +328,10 @@ class CanvasVectorLayerRenderer extends CanvasLayerRenderer {
*/ */
prepareFrame(frameState) { prepareFrame(frameState) {
const vectorLayer = this.getLayer(); const vectorLayer = this.getLayer();
const vectorSource = vectorLayer.getSource() || emptySource; const vectorSource = vectorLayer.getSource();
if (!vectorSource) {
return false;
}
const animating = frameState.viewHints[ViewHint.ANIMATING]; const animating = frameState.viewHints[ViewHint.ANIMATING];
const interacting = frameState.viewHints[ViewHint.INTERACTING]; const interacting = frameState.viewHints[ViewHint.INTERACTING];