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// Copyright 2002, 2004 David Hilvert <dhilvert@auricle.dyndns.org>,
// <dhilvert@ugcs.caltech.edu>
/* This file is part of the Anti-Lamenessing Engine.
The Anti-Lamenessing Engine 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 3 of the License, or
(at your option) any later version.
The Anti-Lamenessing Engine 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 the Anti-Lamenessing Engine; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ale_pos_h__
#define __ale_pos_h__
#include "ale_fixed.h"
#define SINGLE 1
#define DOUBLE 2
#define FIXED16 3
#define FIXED32 4
/*
* Real-valued type used to represent coordinates in an image domain.
*/
#if ALE_COORDINATES == SINGLE
typedef float ale_pos;
#define ALE_POS_PRECISION_STRING "SINGLE"
#define ale_pos_disable_casting()
#define ale_pos_enable_casting()
#define ale_pos_casting_status() 1
#elif ALE_COORDINATES == DOUBLE
typedef double ale_pos;
#define ALE_POS_PRECISION_STRING "DOUBLE"
#define ale_pos_disable_casting()
#define ale_pos_enable_casting()
#define ale_pos_casting_status() 1
#elif ALE_COORDINATES == FIXED32
typedef ale_fixed<ale_fixed_32,16> ale_pos;
#define ALE_POS_PRECISION_STRING "FIXED32"
#define ale_pos_disable_casting() ale_pos::disable_casting()
#define ale_pos_enable_casting() ale_pos::enable_casting()
#define ale_pos_casting_status() ale_pos::casting_status()
#elif ALE_COORDINATES == FIXED16
typedef ale_fixed<ale_fixed_16_calc,10> ale_pos;
#define ALE_POS_PRECISION_STRING "FIXED16"
#define ale_pos_disable_casting() ale_pos::disable_casting()
#define ale_pos_enable_casting() ale_pos::enable_casting()
#define ale_pos_casting_status() ale_pos::casting_status()
#else
#warning Unknown positional precision in ale_pos.h: Choosing PPRECISION=SINGLE.
typedef float ale_pos;
#define ALE_POS_PRECISION_STRING "SINGLE"
#define ale_pos_disable_casting()
#define ale_pos_enable_casting()
#define ale_pos_casting_status() 1
#endif
const ale_pos ale_pos_0 = (ale_pos) 0;
#if ALE_COLORS == FIXED && ALE_COORDINATES == FIXED
#define ale_pos_to_real(x) (x)
#define ale_real_to_pos(x) (x)
#else
#define ale_pos_to_real(x) (x)
#define ale_real_to_pos(x) (x)
#endif
#undef SINGLE
#undef DOUBLE
#undef HALF
#undef FIXED16
#undef FIXED32
#endif
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