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Merge pull request #4814 from openstreetmap/wms-tiles

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Load WMS tiles if EPSG:3857 (or equivalent) is supported by source
This commit is contained in:
Bryan Housel
2018-03-01 15:16:31 -05:00
committed by GitHub
parent 5f85d43110 2b96a8ee0b
commit 67c2dec800
3 changed files with 52497 additions and 8262 deletions
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modules/renderer/background_source.js
+24 -1
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@@ -1,7 +1,10 @@
import _clone from 'lodash-es/clone';
import _some from 'lodash-es/some';
import { geoArea as d3_geoArea } from 'd3-geo';
import {
geoArea as d3_geoArea,
geoMercatorRaw as d3_geoMercatorRaw
} from 'd3-geo';
import { t } from '../util/locale';
import { geoExtent, geoPolygonIntersectsPolygon } from '../geo';
@@ -29,6 +32,17 @@ function vintageRange(vintage) {
return s;
}
function getEPSG3857XY(x, y, z) {
var zoomSize = Math.pow(2, z);
var lon = x / zoomSize * Math.PI * 2 - Math.PI;
var lat = Math.atan(Math.sinh(Math.PI * (1 - 2 * y / zoomSize)));
var mercCoords = d3_geoMercatorRaw(lon, lat);
return {
x: 20037508.34 / Math.PI * mercCoords[0],
y: 20037508.34 / Math.PI * mercCoords[1]
};
}
export function rendererBackgroundSource(data) {
var source = _clone(data);
@@ -93,6 +107,15 @@ export function rendererBackgroundSource(data) {
source.url = function(coord) {
if (this.type === 'wms') {
var minXmaxY = getEPSG3857XY(coord[0], coord[1], coord[2]);
var maxXminY = getEPSG3857XY(coord[0]+1, coord[1]+1, coord[2]);
return template
.replace('{width}', 256)
.replace('{height}', 256)
.replace('{proj}', this.projection)
.replace('{bbox}', minXmaxY.x + ',' + maxXminY.y + ',' + maxXminY.x + ',' + minXmaxY.y);
}
return template
.replace('{x}', coord[0])
.replace('{y}', coord[1])