85 lines
2.3 KiB
Groff
85 lines
2.3 KiB
Groff
.TH gl_trisetcolorlookup 3 "2 Aug 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
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.SH NAME
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gl_trisetcolorlookup, gl_trigetcolorlookup \- manages a color lookup table for shadowing
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.SH SYNOPSIS
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.B #include <triangle.h>
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.BI "void gl_trisetcolorlookup(int " i ", long " color );
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.br
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.BI "long gl_trigetcolorlookup(int " i );
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.SH DESCRIPTION
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.B gl_trisetcolorlookup
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sets the color of an index
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.I i
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in the table used in more than 256 color modes to interpolate tables.
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Note that it is your responsibility to set all the intermediate color values.
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You can use this function to create the index table,
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but remember not to let
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.I i
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go over 4096.
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.B gl_trigetcolorlookup
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retrieves a previously set value from the table.
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Beware, these functions are not a direct part of the svgalib library.
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Instead their source is part of svgalib and can be found in the
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.I threeDkit/
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subdirectory of the original svgalib distribution. However, it is not
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installed in the system by default, s.t. it is unclear where you can find it
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if your svgalib was installed by some
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linux distribution.
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In case of any such problem, simply get an svgalib distribution from the net. Yo
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don't need to install it. Just
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.B make
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in the
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.I threeDkit/
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subdirectory. As of this writing,
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.I svgalib-1.2.12.tar.gz
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is the latest version and can be retrieved by ftp from
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.IR "sunsite.unc.edu" " at " "/pub/Linux/libs/graphics"
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and
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.IR "tsx-11.mit.edu" " at " "/pub/linux/sources/libs"
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which will most probably be mirrored by a site close to you.
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The functions are defined in the
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.IR tri.o " and " triangl.o
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files (or their resp. sources) which you must link to your program.
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.SH SEE ALSO
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.BR vgagl (7),
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.BR svgalib (7),
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.BR threedkit (7),
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.BR gl_striangle (3),
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.BR gl_swtriangle (3),
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.BR gl_triangle (3),
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.BR gl_trisetdrawpoint (3),
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.BR gl_wtriangle (3),
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.BR plane (6),
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.BR wrapdemo (6).
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.SH AUTHOR
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This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The
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demos, the initial documentation and the whole threedkit stuff was done by
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Paul Sheer <psheer@icon.co.za>.
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Paper mail:
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.RS
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Paul Sheer
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.br
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P O BOX 890507
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.br
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Lyndhurst
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.br
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Johannesburg 2106
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.br
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South Africa
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.RE
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Donations (by check or postal order) will be appreciated and will encourage
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further development of this software. However this is strictly on a voluntary
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basis where this software falls under the GNU LIBRARY GENERAL PUBLIC LICENSE.
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