Hi
I would guess that the two layers needs to be synchronized animation
wise somehow to eliminate the flickering. Maybe a time since last
animation could be used to avoid that one layer (bottom) finishing a
redraw triggers a redraw of the top layer. The default doPrepare will
kick off two threads and if the bottom layer finishes before the top
layer this will cause the thread preparing the top layer to be canceled
(and vice versa) and new thread will be kicked off this all depends on
the timing between the two layers.
An alternative is to implement a new policy
http://www.openmap.org/doc/api/com/bbn/openmap/layer/policy/package-summary.html
or perhaps try
using the single threaded StandardRenderPolicy.
BR
Carsten
Jay D. Askren wrote:
>
> I am doing some animation in two open map layers. Both layers extend
> OMGraphicHandlerLayer. I set the background=true on all non-animation
> layers. The animation seems to work great if I only add one of these
> layers to the map. If I try to add both layers to the map, the map
> flickers every single time step. I noticed if I just comment out
> doPrepare() on one of the layers, the flicker goes away, but of course
> that layer stops animating. It appears to be a problem when I call
> doPrepare from two different layers in the time step. Has anyone else
> seen this problem? Any ideas of how to fix it? Thanks.
>
>
>
>
>
> Jay
>
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>
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Received on Mon Feb 11 2008 - 13:51:30 EST