[OpenLayers-Dev] resolutions/scales question
eric.c2c at gmail.com
Tue Oct 28 13:12:18 EDT 2008
So setting [min|max]Resolution in the options passed to an overlay
should switch the overlay on/off when it goes in range/out of range.
I have collegues here that have problems with doing that. They had to
resort to doing:
var layer = new ...
layer.maxResolution = value;
layer.alwaysInRange = false;
to make things work as expected.
I'll check with them if we can come up with an actual test case for this.
2008/10/28, Christopher Schmidt <crschmidt at metacarta.com>:
> On Tue, Oct 28, 2008 at 10:00:34AM -0600, Tim Schaub wrote:
>> Eric Lemoine wrote:
>> > Hi devs
>> > I have a question related to resolutions and overlays. initResolutions
>> > calculates the resolutions array. Is this at actually needed for
>> > overlays? Don't overlays always use the resolutions defined in the
>> > base layer?
>> Yep, they do. So, layer.resolutions is ignored for all but the base
> The first and last entry in layer.resolutions are used in any case where
> the layer believes that it has a 'valid' range to be on/off.
> Christopher Schmidt
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> Dev at openlayers.org
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