mathutil.h

来自「An interactive water fountain. A realis」· C头文件 代码 · 共 35 行

//-------------------------------------------------------------------------
/*
Copyright (C) 1996, 2003 - 3D Realms Entertainment

This file is NOT part of Duke Nukem 3D version 1.5 - Atomic Edition
However, it is either an older version of a file that is, or is
some test code written during the development of Duke Nukem 3D.
This file is provided purely for educational interest.

Duke Nukem 3D is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
*/
//-------------------------------------------------------------------------


extern int32 FindDistance2D(int32_t dx, int32_t dy);
extern int32 FindDistance3D(int32_t dx, int32_t dy, int32_t dz);
extern int32 FindDistance3D_HP(int32 dx, int32 dy, int32 dz);
extern int32 ArcTangentAppx(int32 dx, int32 dy);