110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
// Copyright 2002, 2004 David Hilvert <dhilvert@auricle.dyndns.org>,
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// <dhilvert@ugcs.caltech.edu>
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/* This file is part of the Anti-Lamenessing Engine.
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The Anti-Lamenessing Engine is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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The Anti-Lamenessing Engine 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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the Anti-Lamenessing Engine; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __ale_pos_h__
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#define __ale_pos_h__
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#include "ale_fixed.h"
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#define SINGLE 1
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#define DOUBLE 2
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#define FIXED16 3
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#define FIXED32 4
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/*
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* Real-valued type used to represent coordinates in an image domain.
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*/
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#if ALE_COORDINATES == SINGLE
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typedef float ale_pos;
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#define ALE_POS_PRECISION_STRING "SINGLE"
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#define ale_pos_disable_casting()
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#define ale_pos_enable_casting()
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#define ale_pos_casting_status() 1
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#elif ALE_COORDINATES == DOUBLE
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typedef double ale_pos;
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#define ALE_POS_PRECISION_STRING "DOUBLE"
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#define ale_pos_disable_casting()
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#define ale_pos_enable_casting()
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#define ale_pos_casting_status() 1
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#elif ALE_COORDINATES == FIXED32
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typedef ale_fixed<ale_fixed_32,16> ale_pos;
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#define ALE_POS_PRECISION_STRING "FIXED32"
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#define ale_pos_disable_casting() ale_pos::disable_casting()
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#define ale_pos_enable_casting() ale_pos::enable_casting()
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#define ale_pos_casting_status() ale_pos::casting_status()
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#elif ALE_COORDINATES == FIXED16
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typedef ale_fixed<ale_fixed_16_calc,10> ale_pos;
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#define ALE_POS_PRECISION_STRING "FIXED16"
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#define ale_pos_disable_casting() ale_pos::disable_casting()
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#define ale_pos_enable_casting() ale_pos::enable_casting()
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#define ale_pos_casting_status() ale_pos::casting_status()
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#else
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#warning Unknown positional precision in ale_pos.h: Choosing PPRECISION=SINGLE.
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typedef float ale_pos;
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#define ALE_POS_PRECISION_STRING "SINGLE"
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#define ale_pos_disable_casting()
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#define ale_pos_enable_casting()
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#define ale_pos_casting_status() 1
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#endif
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const ale_pos ale_pos_0 = (ale_pos) 0;
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#if ALE_COLORS == FIXED && ALE_COORDINATES == FIXED
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#define ale_pos_to_real(x) (x)
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#define ale_real_to_pos(x) (x)
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#else
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#define ale_pos_to_real(x) (x)
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#define ale_real_to_pos(x) (x)
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#endif
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#undef SINGLE
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#undef DOUBLE
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#undef HALF
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#undef FIXED16
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#undef FIXED32
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#endif
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