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Diffstat (limited to 'demos/3rdparty/doom/tables.h')
-rw-r--r-- | demos/3rdparty/doom/tables.h | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/demos/3rdparty/doom/tables.h b/demos/3rdparty/doom/tables.h deleted file mode 100644 index 370b418c..00000000 --- a/demos/3rdparty/doom/tables.h +++ /dev/null @@ -1,100 +0,0 @@ -// Emacs style mode select -*- C++ -*- -//----------------------------------------------------------------------------- -// -// $Id:$ -// -// Copyright (C) 1993-1996 by id Software, Inc. -// -// This source is available for distribution and/or modification -// only under the terms of the DOOM Source Code License as -// published by id Software. All rights reserved. -// -// The source is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License -// for more details. -// -// DESCRIPTION: -// Lookup tables. -// Do not try to look them up :-). -// In the order of appearance: -// -// int finetangent[4096] - Tangens LUT. -// Should work with BAM fairly well (12 of 16bit, -// effectively, by shifting). -// -// int finesine[10240] - Sine lookup. -// Guess what, serves as cosine, too. -// Remarkable thing is, how to use BAMs with this? -// -// int tantoangle[2049] - ArcTan LUT, -// maps tan(angle) to angle fast. Gotta search. -// -//----------------------------------------------------------------------------- - - -#ifndef __TABLES__ -#define __TABLES__ - - - -#ifdef LINUX -#include <math.h> -#else -#define PI 3.141592657 -#endif - - -#include "m_fixed.h" - -#define FINEANGLES 8192 -#define FINEMASK (FINEANGLES-1) - - -// 0x100000000 to 0x2000 -#define ANGLETOFINESHIFT 19 - -// Effective size is 10240. -extern const fixed_t finesine[5*FINEANGLES/4]; - -// Re-use data, is just PI/2 pahse shift. -extern const fixed_t* finecosine; - - -// Effective size is 4096. -extern const fixed_t finetangent[FINEANGLES/2]; - -// Binary Angle Measument, BAM. -#define ANG45 0x20000000 -#define ANG90 0x40000000 -#define ANG180 0x80000000 -#define ANG270 0xc0000000 - - -#define SLOPERANGE 2048 -#define SLOPEBITS 11 -#define DBITS (FRACBITS-SLOPEBITS) - -typedef unsigned angle_t; - - -// Effective size is 2049; -// The +1 size is to handle the case when x==y -// without additional checking. -extern const angle_t tantoangle[SLOPERANGE+1]; - - -// Utility function, -// called by R_PointToAngle. -int -SlopeDiv -( unsigned num, - unsigned den); - - -#endif -//----------------------------------------------------------------------------- -// -// $Log:$ -// -//----------------------------------------------------------------------------- |