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fix off-by-one error in getZoomForResolution(). Created test to prevent this from happenning again.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@1511 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
euzuro
2006-09-27 23:08:37 +00:00
parent 73fb43712f
commit cf7920ea11
2 changed files with 18 additions and 1 deletions
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2
lib/OpenLayers/Layer.js
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@@ -393,7 +393,7 @@ OpenLayers.Layer.prototype = {
*/
getZoomForResolution: function(resolution) {
for(var i=1; i <= this.resolutions.length; i++) {
for(var i=1; i < this.resolutions.length; i++) {
if ( this.resolutions[i] < resolution) {
break;
}

17
tests/test_Layer.html
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@@ -126,6 +126,23 @@
}
function test_06_Layer_getZoomForResolution(t) {
t.plan(4);
var layer = new OpenLayers.Layer('Test Layer');
//make some dummy resolutions
layer.resolutions = [128, 64, 32, 16, 8, 4, 2];
t.eq(layer.getZoomForResolution(200), 0, "zoom all the way out");
t.eq(layer.getZoomForResolution(25), 2, "zoom in middle");
t.eq(layer.getZoomForResolution(3), 5, "zoom allmost all the way in");
t.eq(layer.getZoomForResolution(1), 6, "zoom all the way in");
}
/******
*
*