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New wrapX functions for coordinate and extent

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This commit is contained in:
Andreas Hocevar
2020-03-30 19:26:26 +02:00
parent 48b79cf7d1
commit 098885a006
8 changed files with 121 additions and 35 deletions
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src/ol/layer/Graticule.js
+6 -13
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@@ -24,7 +24,9 @@ import {
getIntersection,
getWidth,
intersects,
isEmpty
isEmpty,
buffer as bufferExtent,
wrapX
} from '../extent.js';
import {clamp} from '../math.js';
import Style from '../style/Style.js';
@@ -481,19 +483,10 @@ 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();
if (this.projection_) {
const center = getCenter(extent);
const projectionExtent = this.projection_.getExtent();
const worldWidth = getWidth(projectionExtent);
if (this.getSource().getWrapX() && this.projection_.canWrapX() && !containsExtent(projectionExtent, extent)) {
const worldsAway = Math.floor((center[0] - projectionExtent[0]) / worldWidth);
realExtent[0] -= (worldsAway * worldWidth);
realExtent[2] -= (worldsAway * worldWidth);
}
realExtent[0] = Math.round(realExtent[0] * 1e6) / 1e6;
realExtent[2] = Math.round(realExtent[2] * 1e6) / 1e6;
if (this.projection_ && this.getSource().getWrapX()) {
wrapX(realExtent, this.projection_);
}
if (this.loadedExtent_ && !equals(this.loadedExtent_, realExtent)) {
if (this.loadedExtent_ && !containsExtent(bufferExtent(this.loadedExtent_, resolution / 2), realExtent)) {
// we should not keep track of loaded extents
this.getSource().removeLoadedExtent(this.loadedExtent_);
}