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Background color in raster widgets...
From: |
Barry McMullin |
Subject: |
Background color in raster widgets... |
Date: |
Tue, 7 Jan 1997 11:20:56 -0700 |
I had exactly the same problem (of wanting a white
rather than black background) and for the same reasons
(making hardcopy, especially in monochrome). I did not
search too hard for the "right" way to do it (if there
is one!) but just resorted to:
[worldRaster fillRectangleX0: 0 Y0: 0
X1: ([world getSizeX] * 8) Y1: ([world getSizeY] * 8)
Color: backgroundColor];
I use this in place of [worldRaster erase];
backgroundColor is an index into the colormap
(which I have elsewhere set to white - but it
could be anything).
You might be concerned that there will be a serious
performance hit compared to using erase - but I think
the code behind erase is effectively identical.
Ignore the "* 8" on the sizes here - it just reflects a
scaling between the agent space and the raster in my
particular model.
Hope that helps.
Barry.
- Background color in raster widgets...,
Barry McMullin <=