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Handle cases where the x-axis distance cannot be calculated

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This commit is contained in:
Andreas Hocevar
2014-07-21 12:20:51 +02:00
parent 82b921ff06
commit eb71e8e92d
1 changed files with 11 additions and 4 deletions
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15
src/ol/control/scalelinecontrol.js
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@@ -43,9 +43,12 @@ ol.control.ScaleLineUnits = {
/**
* @classdesc
* A control displaying rough x-axis distances.
* By default it will show in the bottom left portion of the map, but this can
* be changed by using the css selector `.ol-scale-line`.
* A control displaying rough x-axis distances, calculated for the center of the
* viewport.
* No scale line will be shown when the x-axis distance cannot be calculated in
* the view projection (e.g. at or beyond the poles in EPSG:4326).
* By default the scale line will show in the bottom left portion of the map,
* but this can be changed by using the css selector `.ol-scale-line`.
*
* @constructor
* @extends {ol.control.Control}
@@ -304,7 +307,11 @@ ol.control.ScaleLine.prototype.updateElement_ = function() {
count = ol.control.ScaleLine.LEADING_DIGITS[i % 3] *
Math.pow(10, Math.floor(i / 3));
width = Math.round(count / pointResolution);
if (width >= this.minWidth_) {
if (isNaN(width)) {
goog.style.setElementShown(this.element_, false);
this.renderedVisible_ = false;
return;
} else if (width >= this.minWidth_) {
break;
}
++i;