gl_trisetcolorlookup(3)
NAME
gl_trisetcolorlookup, gl_trigetcolorlookup - manages a
color lookup table for shadowing
SYNOPSIS
#include <triangle.h> void gl_trisetcolorlookup(int i, long color); long gl_trigetcolorlookup(int i);
DESCRIPTION
gl_trisetcolorlookup sets the color of an index i in the
table used in more than 256 color modes to interpolate
tables.
Note that it is your responsibility to set all the inter
mediate color values.
You can use this function to create the index table, but
remember not to let i go over 4096.
gl_trigetcolorlookup retrieves a previously set value from
the table.
Beware, these functions are not a direct part of the
svgalib library. Instead their source is part of svgalib
and can be found in the threeDkit/ subdirectory of the
original svgalib distribution. However, it is not
installed in the system by default, s.t. it is unclear
where you can find it if your svgalib was installed by
some linux distribution.
In case of any such problem, simply get an svgalib distri
bution from the net. Yo don't need to install it. Just
make in the threeDkit/ subdirectory. As of this writing,
svgalib-1.2.12.tar.gz is the latest version and can be
retrieved by ftp from sunsite.unc.edu at
/pub/Linux/libs/graphics and tsx-11.mit.edu at
/pub/linux/sources/libs which will most probably be mir
rored by a site close to you.
The functions are defined in the tri.o and triangl.o files
(or their resp. sources) which you must link to your pro
gram.
SEE ALSO
vgagl(7), svgalib(7), threedkit(7), gl_striangle(3), gl_swtriangle(3), gl_triangle(3), gl_trisetdrawpoint(3), gl_wtriangle(3), plane(6), wrapdemo(6).
AUTHOR
This manual page was edited by Michael Weller <eowmob@expmath.uni-essen.de>. The demos, the initial documentation
and the whole threedkit stuff was done by Paul Sheer
<psheer@icon.co.za>.
- Paper mail:
- Paul Sheer
P O BOX 890507
Lyndhurst
Johannesburg 2106
South Africa - Donations (by check or postal order) will be appreciated
and will encourage further development of this software.
However this is strictly on a voluntary basis where this
software falls under the GNU LIBRARY GENERAL PUBLIC
LICENSE.