From: Sergio Masci (sergio@xcprod.com)
Date: Tue 13 Mar 2001 - 17:32:38 IST
> I try to use svgalib for two weeks, sorry for my poor english, and i
> encounter a lot of difficulties, the first is to draw a line from a point
of
> color c1 to a point of color c2 with a "degradation" from c1 to c2, so I
> have problem with the palette, with the algorithm..., the second is I
don't
> how to implement a relativ fast rotation with matrix and this sort of
> things, I know I know nothing, this is already good, isn't it ?
First thing to do is look at the test programs that come with svgalib. If I
remember correctly, some of them draw lines in different colours. Try them
on your hardware and see what happens. Identify which one draws the lines
and make a copy of it. Use this copy as your test harness. You can add a
little code to this harness and see what happens without having to do all of
it from scratch. Experiment, them come back.
You should keep to a low resolution of 320x200x256 to start with. This will
eliminate your bank switching problems while you become familiar with
svgalib. For fast matrix rotation search for graphics GEMS on the net, these
[rotations] will probably be well discussed there.
Regards
Sergio
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