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Beginner Question: PlotS rasterization info? [message #27808]

Wed, 07 November 2001 08:44

sandy
Messages: 6
Registered: July 1991

Junior Member

When PlotS or Plot rasterizes straight lines between endpoints/vertices,
what's the best way to get the coordinates of all the points
interpolated? Surely this information is stored somewhere. Can I get
these coordinates without actually plotting anything to the screen? I
tried a Bresenham algorithm, but it doesn't return exactly the same
interpolated points as PlotS--there appears to be some sort of roundoff
difference. Any help would be appreciated, since currently I'm
resorting to the roundabout and no doubt inefficient method of plotting
to a pixmap, TVRD-ing, and then WHERE-ing the screen-dumped array....

Thanks,

Ted Cary (tedcary@yahoo.com)

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