mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-07 21:41:07 +00:00
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// 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.
|
|
//
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include "tables.h"
|
|
|
|
fixed_t finetangent[4096];
|
|
fixed_t finesine[10240];
|
|
angle_t tantoangle[2049];
|
|
|
|
cosine_inline finecosine; // in case this is actually needed
|