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Better validation to handle polar projections

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For some projections (e.g. polar) the maximum or minimum values may be at the center.
To improve the display for polar projections take validated center values into account when calculating max and min.
This commit is contained in:
mike-000
2020-02-25 13:47:02 +00:00
committed by GitHub
parent 9039e2629b
commit adcf57ef20
1 changed files with 6 additions and 6 deletions
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12
src/ol/layer/Graticule.js
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@@ -679,8 +679,8 @@ class Graticule extends VectorLayer {
];
const centerLonLat = this.toLonLatTransform_(validCenter);
let centerLon = centerLonLat[0];
let centerLat = centerLonLat[1];
let centerLon = clamp(centerLonLat[0], this.minLon_, this.maxLon_);
let centerLat = clamp(centerLonLat[1], this.minLat_, this.maxLat_);
const maxLines = this.maxLines_;
let cnt, idx, lat, lon;
@@ -693,10 +693,10 @@ class Graticule extends VectorLayer {
validExtent = applyTransform(validExtent, this.toLonLatTransform_, undefined, 8);
const maxLat = Math.min(validExtent[3], this.maxLat_);
const maxLon = Math.min(validExtent[2], this.maxLon_);
const minLat = Math.max(validExtent[1], this.minLat_);
const minLon = Math.max(validExtent[0], this.minLon_);
const maxLat = clamp(validExtent[3], centerLat, this.maxLat_);
const maxLon = clamp(validExtent[2], centerLon, this.maxLon_);
const minLat = clamp(validExtent[1], this.minLat_, centerLat);
const minLon = clamp(validExtent[0], this.minLon_, centerLon);
// Create meridians