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if maxResolution is "auto" calculate maxResolution based on maxExtent and map size, else calculate maxResolution based on maxExtent and tile size

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Éric Lemoine
2012-04-11 17:01:35 +02:00
parent ebfbb354ed
commit bfd6be634f
2 changed files with 17 additions and 12 deletions
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22
lib/OpenLayers/Layer.js
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@@ -884,16 +884,6 @@ OpenLayers.Layer = OpenLayers.Class({
props.resolutions = this.resolutionsFromScales(props.scales);
}
if(props.resolutions == null) {
var maxExtent = this.maxExtent;
if (!props.maxResolution && maxExtent) {
// maxResolution for default grid sets assumes that at zoom
// level zero, the whole world fits on one tile.
var tileSize = this.tileSize || this.map.getTileSize();
props.maxResolution = Math.max(
maxExtent.getWidth() / tileSize.w,
maxExtent.getHeight() / tileSize.h
);
}
props.resolutions = this.calculateResolutions(props);
}
}
@@ -1029,6 +1019,18 @@ OpenLayers.Layer = OpenLayers.Class({
minResolution = Math.max(wRes, hRes);
}
if(typeof maxResolution !== "number" &&
typeof minResolution !== "number" &&
this.maxExtent != null) {
// maxResolution for default grid sets assumes that at zoom
// level zero, the whole world fits on one tile.
var tileSize = this.tileSize || this.map.getTileSize();
maxResolution = Math.max(
this.maxExtent.getWidth() / tileSize.w,
this.maxExtent.getHeight() / tileSize.h
);
}
// determine numZoomLevels
var maxZoomLevel = props.maxZoomLevel;
var numZoomLevels = props.numZoomLevels;