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69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
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/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
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Doom 3 Source Code 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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Doom 3 Source Code 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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#ifndef __gdefs_h__
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#define __gdefs_h__
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/*==================*
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* TYPE DEFINITIONS *
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*==================*/
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typedef unsigned char byte;
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typedef unsigned short word;
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#pragma once
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#define dabs(a) (((a)<0) ? -(a) : (a))
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#define CLAMP(v,l,h) ((v)<(l) ? (l) : (v)>(h) ? (h) : v)
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#define xswap(a,b) { a^=b; b^=a; a^=b; }
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#define lum(a) ( 0.2990*(a>>16) + 0.5870*((a>>8)&0xff) + 0.1140*(a&0xff) )
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#define gsign(a) ((a) < 0 ? -1 : 1)
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#define mnint(a) ((a) < 0 ? (int)(a - 0.5) : (int)(a + 0.5))
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#define mmax(a, b) ((a) > (b) ? (a) : (b))
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#define mmin(a, b) ((a) < (b) ? (a) : (b))
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#define RGBDIST( src0, src1 ) ( ((src0[0]-src1[0])*(src0[0]-src1[0])) + \
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((src0[1]-src1[1])*(src0[1]-src1[1])) + \
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((src0[2]-src1[2])*(src0[2]-src1[2])) )
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#define RGBADIST( src0, src1 ) ( ((src0[0]-src1[0])*(src0[0]-src1[0])) + \
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((src0[1]-src1[1])*(src0[1]-src1[1])) + \
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((src0[2]-src1[2])*(src0[2]-src1[2])) + \
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((src0[3]-src1[3])*(src0[3]-src1[3])) )
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#define RMULT 0.2990f // use these for televisions
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#define GMULT 0.5870f
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#define BMULT 0.1140f
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#define RIEMULT -0.16874f
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#define RQEMULT 0.50000f
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#define GIEMULT -0.33126f
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#define GQEMULT -0.41869f
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#define BIEMULT 0.50000f
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#define BQEMULT -0.08131f
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#endif // gdefs
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