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From: rujo@ulrik.uio.no (Rune J|rgensen)
Newsgroups: comp.windows.ms.programmer
Subject: Fast linedrawing in Windows
Message-ID: <RUJO.91May14173029@ulrik.uio.no>
Date: 14 May 91 15:30:29 GMT
Article-I.D.: ulrik.RUJO.91May14173029
Sender: news@ulrik.uio.no (Mr News)
Distribution: comp.windows.ms.programmer
Organization: University of Oslo, Norway
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With advanced graphics adapters, you may download an entire
displayfile with vectors. Then you send commands to the adapter,
asking it to perform a local zoom or redraw. This may be a 100
or a 1000 times faster than sending vectors one by one.

Is there any way you may utilize smart graphics adapters with
MS Windows? Or is MoveTTo/LineTo the only way? They PlayMetaFile()
call should in theory allow intelligent graphics cards to
process blocks of a metafile at a time, but I suspect Windows
handles the metafile it self an sends basic commands to
the card one by one. Does anyone know the answer to this?
(I asked Microsoft Scandinava, but their answer showed that
they did not understand the question!)

Any other hints for fast linedrawing (zoom/redraw) would be
welcomed as well. You may mail me directly:

rujo@ulrik.uio.no

Rune Jorgensen
Data Design System
Oslo, Norway