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https://github.com/ZDoom/gzdoom-gles.git
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43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
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// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// DESCRIPTION:
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// Lookup tables.
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// Do not try to look them up :-).
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// In the order of appearance:
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//
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// int finetangent[4096] - Tangens LUT.
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// Should work with BAM fairly well (12 of 16bit,
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// effectively, by shifting).
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//
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// int finesine[10240] - Sine lookup.
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// Guess what, serves as cosine, too.
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// Remarkable thing is, how to use BAMs with this?
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//
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// int tantoangle[2049] - ArcTan LUT,
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// maps tan(angle) to angle fast. Gotta search.
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//
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//
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//-----------------------------------------------------------------------------
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#include "tables.h"
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fixed_t finetangent[4096];
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fixed_t finesine[10240];
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angle_t tantoangle[2049];
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cosine_inline finecosine; // in case this is actually needed
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