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Re: Raster and ZoomRaster


From: Benedikt Stefansson
Subject: Re: Raster and ZoomRaster
Date: Sat, 18 Apr 1998 01:51:52 +0200

Pietro Terna wrote:

>         Hi all,
>
>         in the same application, if I change
>
>         id <ZoomRaster> consumerRaster
>         into
>         id <Raster> consumerRaster
>
>         to handle a non square widget (displaying a Discrete2D object), colors
> disappear from the window and I obtain only black or white pixels.
>
>         Thanks for any help, Pietro

Sorry that I can't help you with your problem Pietro, but for what it's worth
I just replicated the bug in Heatbugs, by substituting Raster for ZoomRaster in
HeatbugsObserverSwarm, and taking out the "setZoomFactor" when the worldRaster 
is
created. The worldRaster now either stays black or displays a fuzzy pattern of
white, yellow and read colored pixels in one region.

Weird bug - since all that ZoomRaster does to draw pixels or refresh itself is 
to
call code in it's superclass, i.e.  Raster. So if an instance of ZoomRaster
works, why wouldn't an instance of Raster?

--
With best regards,
-Benedikt

-------------------------------------------------------------------
Department of Economics, UCLA, Los Angeles, CA 90095-1477, USA
Tel: (310) 825 4126     Fax: (310) 825 9528

4/3-7/1 1998:
Dipartimento di Economia, Universita di Trento, 38100 Trento, ITALY
Tel: +39 (461) 88 22 46 Fax: +39 (461) 88 22 22




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