gl_trisetcolorlookup(3) Svgalib User Manual gl_trisetcolorlookup(3)NAME
gl_trisetcolorlookup, gl_trigetcolorlookup - manages a color lookup ta‐
ble for shadowing
SYNOPSIS
#include <triangle.h>
void gl_trisetcolorlookup(int i, long color);
long gl_trigetcolorlookup(int i);
DESCRIPTIONgl_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 intermediate 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 threeD‐
kit/ 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 distribution from
the net. Yo don't need to install it. Just make in the threeDkit/ sub‐
directory. As of this writing, svgalib-1.2.12.tar.gz is the latest ver‐
sion 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 mirrored 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 program.
SEE ALSOvgagl(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@exp-math.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.
Svgalib (>= 1.2.11) 2 Aug 1997 gl_trisetcolorlookup(3)
