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Correctly reproject projections with undefined units

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Petr Sloup
2015-08-25 17:35:07 +02:00
parent aad5f94556
commit 14e20e23a0
3 changed files with 27 additions and 32 deletions
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src/ol/reproj/reproj.js
+6 -2
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@@ -27,10 +27,14 @@ ol.reproj.calculateSourceResolution = function(sourceProj, targetProj,
var sourceCenter = ol.proj.transform(targetCenter, targetProj, sourceProj);
var targetMPU = targetProj.getMetersPerUnit();
var sourceMPU = sourceProj.getMetersPerUnit();
// calculate the ideal resolution of the source data
var sourceResolution =
targetProj.getPointResolution(targetResolution, targetCenter) *
targetProj.getMetersPerUnit() / sourceProj.getMetersPerUnit();
targetProj.getPointResolution(targetResolution, targetCenter);
if (goog.isDef(targetMPU)) sourceResolution *= targetMPU;
if (goog.isDef(sourceMPU)) sourceResolution /= sourceMPU;
// based on the projection properties, the point resolution at the specified
// coordinates may be slightly different. We need to reverse-compensate this