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change size to optional

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This commit is contained in:
cs09gi@gmail.com
2017-05-31 13:40:01 +09:00
parent 54a62ea78d
commit e8a2ad1d1b
1 changed files with 4 additions and 2 deletions
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6
src/ol/view.js
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@@ -662,11 +662,13 @@ ol.View.prototype.getResolutions = function() {
/**
* Get the resolution for a provided extent (in map units) and size (in pixels).
* @param {ol.Extent} extent Extent.
* @param {ol.Size} size Box pixel size.
* @param {ol.Size} opt_size Box pixel size.
* @return {number} The resolution at which the provided extent will render at
* the given size.
* @api
*/
ol.View.prototype.getResolutionForExtent = function(extent, size) {
ol.View.prototype.getResolutionForExtent = function(extent, opt_size) {
var size = opt_size || this.getSizeFromViewport_();
var xResolution = ol.extent.getWidth(extent) / size[0];
var yResolution = ol.extent.getHeight(extent) / size[1];
return Math.max(xResolution, yResolution);