doom3-gpl
Doom 3 GPL source release
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gdefs.h
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1 /*
2 ===========================================================================
3 
4 Doom 3 GPL Source Code
5 Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
6 
7 This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
8 
9 Doom 3 Source Code is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
13 
14 Doom 3 Source Code is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18 
19 You should have received a copy of the GNU General Public License
20 along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
21 
22 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.
23 
24 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.
25 
26 ===========================================================================
27 */
28 #ifndef __gdefs_h__
29 #define __gdefs_h__
30 
31 /*==================*
32  * TYPE DEFINITIONS *
33  *==================*/
34 
35 typedef unsigned char byte;
36 typedef unsigned short word;
37 #pragma once
38 
39 #define dabs(a) (((a)<0) ? -(a) : (a))
40 #define CLAMP(v,l,h) ((v)<(l) ? (l) : (v)>(h) ? (h) : v)
41 #define xswap(a,b) { a^=b; b^=a; a^=b; }
42 #define lum(a) ( 0.2990*(a>>16) + 0.5870*((a>>8)&0xff) + 0.1140*(a&0xff) )
43 #define gsign(a) ((a) < 0 ? -1 : 1)
44 #define mnint(a) ((a) < 0 ? (int)(a - 0.5) : (int)(a + 0.5))
45 #define mmax(a, b) ((a) > (b) ? (a) : (b))
46 #define mmin(a, b) ((a) < (b) ? (a) : (b))
47 #define RGBDIST( src0, src1 ) ( ((src0[0]-src1[0])*(src0[0]-src1[0])) + \
48  ((src0[1]-src1[1])*(src0[1]-src1[1])) + \
49  ((src0[2]-src1[2])*(src0[2]-src1[2])) )
50 
51 #define RGBADIST( src0, src1 ) ( ((src0[0]-src1[0])*(src0[0]-src1[0])) + \
52  ((src0[1]-src1[1])*(src0[1]-src1[1])) + \
53  ((src0[2]-src1[2])*(src0[2]-src1[2])) + \
54  ((src0[3]-src1[3])*(src0[3]-src1[3])) )
55 
56 
57 #define RMULT 0.2990f // use these for televisions
58 #define GMULT 0.5870f
59 #define BMULT 0.1140f
60 
61 #define RIEMULT -0.16874f
62 #define RQEMULT 0.50000f
63 #define GIEMULT -0.33126f
64 #define GQEMULT -0.41869f
65 #define BIEMULT 0.50000f
66 #define BQEMULT -0.08131f
67 
68 #endif // gdefs
unsigned short word
Definition: gdefs.h:36
unsigned char byte
Definition: gdefs.h:35