Wed, May 2 2001
13:27:49
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Request created by mneteler
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Subject: R_polygon_abs() seems to ignore islands
- Vector:
R_polygon_abs() seems to ignore islands. Correct?
Comment from Eric Miller:
While skimming through the BUG list, there's a report about
R_Polygon_abs() ignoring islands. A little investigation would show this
to be correct. However, each display driver must implement this
individually, and I only looked at the XDRIVER24 version.
Anyway, the code is real simple and does not do anything other than draw
a filled polygon based on supplied display coordinates and the already
set fill color. Presumably it is up to the caller to handle
islands/holes. However, this is probably not a simple task when drawing a
filled polygon cover over other layers. Perhaps what is wanted is a high
level vector drawing command such as some of the commands in the
partially functional DISPLAYLIB??? I don't know X well enough to know if
it has a way to handle holes in it's polygon drawing routines.
A little more context for the BUG report seems in order since this really
doesn't seem to be a "bug", but a shortcoming.
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Wed, Aug 8 2001
07:17:48
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Comments added by egmiller
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Not a bug. That's just the behavior. Islands/Holes need to be accomodated
further up the chain. |
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Wed, Aug 8 2001
07:18:02
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Status changed to resolved by egmiller
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18:32:21
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