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Add approximatelyEquals function for comparing extents

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This commit is contained in:
Andreas Hocevar
2020-03-31 14:52:02 +02:00
parent 2c7f58dbed
commit cdafc4fa05
3 changed files with 27 additions and 8 deletions
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14
src/ol/layer/Graticule.js
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@@ -18,7 +18,7 @@ import {
applyTransform,
containsCoordinate,
containsExtent,
equals,
approximatelyEquals,
getCenter,
getHeight,
getIntersection,
@@ -481,17 +481,15 @@ class Graticule extends VectorLayer {
*/
strategyFunction(extent, resolution) {
// extents may be passed in different worlds, to avoid endless loop we use only one
const realExtent = extent.slice();
const realWorldExtent = extent.slice();
if (this.projection_ && this.getSource().getWrapX()) {
wrapExtentX(realExtent, this.projection_);
wrapExtentX(realWorldExtent, this.projection_);
}
realExtent[0] = Math.round(realExtent[0] * 1e8) / 1e8;
realExtent[2] = Math.round(realExtent[2] * 1e8) / 1e8;
if (this.loadedExtent_ && !equals(this.loadedExtent_, realExtent)) {
if (this.loadedExtent_ && !approximatelyEquals(this.loadedExtent_, realWorldExtent, resolution)) {
// we should not keep track of loaded extents
this.getSource().removeLoadedExtent(this.loadedExtent_);
}
return [realExtent];
return [realWorldExtent];
}
/**
@@ -508,7 +506,7 @@ class Graticule extends VectorLayer {
const layerExtent = this.getExtent() || [-Infinity, -Infinity, Infinity, Infinity];
const renderExtent = getIntersection(layerExtent, extent);
if (this.renderedExtent_ && equals(this.renderedExtent_, renderExtent)) {
if (this.renderedExtent_ && approximatelyEquals(this.renderedExtent_, renderExtent, resolution)) {
return;
}
this.renderedExtent_ = renderExtent;