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Add common transforms by default

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This commit is contained in:
Tim Schaub
2017-03-27 10:07:00 -06:00
parent 03700c0f01
commit 9415899a03
6 changed files with 30 additions and 26 deletions
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23
src/ol/proj.js
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@@ -2,6 +2,8 @@ goog.provide('ol.proj');
goog.require('ol');
goog.require('ol.extent');
goog.require('ol.proj.EPSG3857');
goog.require('ol.proj.EPSG4326');
goog.require('ol.proj.Projection');
goog.require('ol.proj.Units');
goog.require('ol.proj.proj4');
@@ -467,3 +469,24 @@ ol.proj.transformWithProjections = function(point, sourceProjection, destination
sourceProjection, destinationProjection);
return transformFn(point);
};
/**
* Add transforms to and from EPSG:4326 and EPSG:3857. This function is called
* by when this module is executed and should only need to be called again after
* `ol.proj.clearAllProjections()` is called (e.g. in tests).
*/
ol.proj.addCommon = function() {
// Add transformations that don't alter coordinates to convert within set of
// projections with equal meaning.
ol.proj.addEquivalentProjections(ol.proj.EPSG3857.PROJECTIONS);
ol.proj.addEquivalentProjections(ol.proj.EPSG4326.PROJECTIONS);
// Add transformations to convert EPSG:4326 like coordinates to EPSG:3857 like
// coordinates and back.
ol.proj.addEquivalentTransforms(
ol.proj.EPSG4326.PROJECTIONS,
ol.proj.EPSG3857.PROJECTIONS,
ol.proj.EPSG3857.fromEPSG4326,
ol.proj.EPSG3857.toEPSG4326);
};
ol.proj.addCommon();