[2879] | 1 | /** This file contains various macros, templates and constants for the ERS system.
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| 2 | @author Jiri Bittner
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| 3 | */
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| 4 |
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| 5 | #ifndef __COMMON_H
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| 6 | #define __COMMON_H
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| 7 |
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| 8 |
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| 9 | #include <math.h>
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| 10 | #include <stdlib.h>
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| 11 | #include <iostream>
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| 12 | #include <fstream>
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| 13 | #include <string>
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| 14 | #include <limits.h>
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| 15 | #include <vector>
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| 16 | #include <queue>
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| 17 |
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| 18 |
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| 19 |
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| 20 | namespace CHCDemoEngine
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| 21 | {
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| 22 |
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| 23 | struct Triangle3;
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| 24 | class BvhNode;
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| 25 | class BvhLeaf;
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| 26 | class OcclusionQuery;
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| 27 | class SceneEntity;
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| 28 |
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[2911] | 29 | class Shape;
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| 30 | class Polygon3;
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[2913] | 31 | class Vector3;
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[2980] | 32 | class Geometry;
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[3036] | 33 | class GPUProgramParameters;
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| 34 | class Transform3;
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| 35 | class Texture;
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| 36 | class Material;
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[3038] | 37 | class ShaderProgram;
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| 38 | class FrameBufferObject;
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[3042] | 39 | class Technique;
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[3036] | 40 |
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[3019] | 41 | struct LODLevel;
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[2879] | 42 |
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| 43 |
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[3036] | 44 |
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[2879] | 45 | #if defined(_MSC_VER)
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| 46 | // use perftimer only on msvc
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| 47 | #define USE_PERFTIMER
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| 48 |
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| 49 | // define __SSE__ macro as it is not defined under MSVC
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| 50 | #define __SSE__
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| 51 | #endif
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| 52 |
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| 53 | // This constant should be used for the length of the array char for filenames
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| 54 | // etc., for example: char filename[MaxStringLength]
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| 55 | const int MaxStringLength = 256;
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| 56 |
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| 57 | #if defined(_MSC_VER)
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| 58 | #pragma warning(disable:4018)
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| 59 | #pragma warning(disable:4800)
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| 60 | //#pragma warning(disable:4244)
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| 61 |
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| 62 | #if 0 // Note matt: comment this out because conflicts with definition in qt library!!
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| 63 | typedef unsigned int uint;
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| 64 | #endif
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| 65 | typedef unsigned short ushort;
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| 66 | typedef unsigned char uchar;
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| 67 | typedef unsigned long ulong;
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| 68 | #endif
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| 69 |
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| 70 | #if defined(__GNUC__) || defined(_MSC_VER)
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| 71 | //#define DIRCAT '.'
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| 72 | #endif
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| 73 |
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| 74 | #if !defined(__WATCOMC__) && !defined(__CYGWIN32__) && !defined(_MSC_VER)
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| 75 | #include <values.h>
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| 76 | #else // __WATCOMC__
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[2898] | 77 | #define M_PI 3.14159265358979323846F
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| 78 | #define M_E 2.71828182845904523536F
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| 79 | #define MAXFLOAT 3.40282347e+37F
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[2879] | 80 | #endif // __WATCOMC__
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| 81 |
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| 82 | // some compilers do not define the bool yet, but it was declared by ANSI
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| 83 | #if !defined(__WATCOMC__) && !defined(_MSC_VER)
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| 84 | #if defined (__GNUC__) || (_BOOL)
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| 85 | //#error "HAS BOOL defined"
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| 86 | #define HAS_BOOL
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| 87 | #endif
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| 88 | #else // __WATCOMC__
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| 89 | #if (__WATCOMC__ > 1060)
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| 90 | //#error "Watcom HAS BOOL defined"
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| 91 | #define HAS_BOOL
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| 92 | #endif
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| 93 | #endif // __WATCOMC__
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| 94 |
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| 95 |
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| 96 | #if defined(__WATCOMC__) || defined(_MSC_VER)
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| 97 | #define strcasecmp stricmp
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| 98 | #define strncasecmp strnicmp
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| 99 | #endif // __WATCOMC__
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| 100 |
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| 101 | // matt
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| 102 |
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| 103 | #define USE_GZLIB 1
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| 104 |
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| 105 | #if USE_GZLIB
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| 106 |
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| 107 | #define OUT_BIN_MODE ios::out
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| 108 | #define IN_BIN_MODE ios::in
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| 109 |
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| 110 | #else
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| 111 |
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| 112 | #ifdef sgi
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| 113 | #define OUT_BIN_MODE ios::out
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| 114 | #define IN_BIN_MODE ios::in
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| 115 | #else // sgi
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| 116 | #if defined(__WATCOMC__) || defined(_MSC_VER)
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| 117 | #define OUT_BIN_MODE ios::out | ios::binary
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| 118 | #define IN_BIN_MODE ios::in | ios::binary
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| 119 | #else
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| 120 | #define OUT_BIN_MODE ios::out | ios::bin
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| 121 | #define IN_BIN_MODE ios::in | ios::bin
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| 122 | #endif // __WATCOMC_
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| 123 | #endif // sgi
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| 124 |
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| 125 | #endif
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| 126 |
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| 127 | // #ifndef HAS_BOOL
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| 128 | // //enum bool {
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| 129 | // // false = 0,
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| 130 | // // true
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| 131 | // //};
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| 132 | // #define bool int
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| 133 | // #define false 0
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| 134 | // #define true 1
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| 135 | // #endif // HAS_BOOL
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| 136 |
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| 137 | typedef unsigned long dword;
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| 138 |
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| 139 | #ifndef NULL
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| 140 | #define NULL (void *)0
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| 141 | #endif // NULL
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| 142 |
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| 143 | typedef float Real;
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| 144 | typedef unsigned char byte;
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| 145 |
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| 146 |
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| 147 | #ifndef getch
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| 148 | #define getch() getchar()
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| 149 | #endif
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| 150 |
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| 151 | #define TRASH 1.0e-5
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| 152 |
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| 153 | // delete a pointer and set to NULL
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| 154 | #ifndef DEL_PTR
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| 155 | #define DEL_PTR(ptr) do {if (ptr) { \
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| 156 | delete (ptr); \
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| 157 | (ptr) = 0;}} \
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| 158 | while (0)
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| 159 | #endif
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| 160 |
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| 161 |
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| 162 | // delete a pointer and set to NULL
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| 163 | #ifndef DEL_ARRAY_PTR
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| 164 | #define DEL_ARRAY_PTR(ptr) do {if (ptr) { \
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| 165 | delete [] (ptr); \
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| 166 | (ptr) = 0;}} \
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| 167 | while (0)
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| 168 | #endif
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| 169 |
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| 170 |
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| 171 | // Clears a container (i.e., a vector of pointers) and deletes the pointers
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| 172 | #ifndef CLEAR_CONTAINER
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[2961] | 173 | #define CLEAR_CONTAINER(co) do { for (size_t _i = 0; _i < (co).size(); ++ _i) { \
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[2879] | 174 | DEL_PTR((co)[_i]);} \
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| 175 | (co).clear(); } \
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| 176 | while (0)
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| 177 | #endif
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| 178 |
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| 179 |
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| 180 | inline int signum(const Real a, const Real thresh = TRASH)
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| 181 | {
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| 182 | if (a>thresh)
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| 183 | return 1;
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| 184 | else
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| 185 | if (a<-thresh)
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| 186 | return -1;
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| 187 | return 0;
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| 188 | }
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| 189 |
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| 190 | inline double Absd(const double a)
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| 191 | {
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| 192 | return (a >= 0.0) ? a : -a;
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| 193 | }
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| 194 |
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| 195 | inline float Abs(const float a)
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| 196 | {
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| 197 | return (a >= 0.0f) ? a : -a;
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| 198 | }
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| 199 |
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| 200 | // =======================================================
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| 201 | // Comparing things
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| 202 | //struct Limits {
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| 203 | // const Real thresh=TRASH;
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| 204 | // const Real small=0.1;
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| 205 | //};
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| 206 |
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| 207 | template <class T>
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| 208 | bool
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| 209 | ClipValue(T &v, const T m, const T M)
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| 210 | {
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| 211 | if (v<m) {
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| 212 | v = m;
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| 213 | return true;
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| 214 | }
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| 215 | if (v>M) {
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| 216 | v = M;
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| 217 | return true;
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| 218 | }
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| 219 |
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| 220 | return false;
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| 221 | }
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| 222 |
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| 223 |
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| 224 | inline int eq(Real a, Real b, Real t=TRASH)
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| 225 | {
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| 226 | return Abs(a-b)<t;
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| 227 | }
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| 228 |
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| 229 | inline int leq(Real a,Real b,Real t=TRASH)
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| 230 | {
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| 231 | return a - b < t;
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| 232 | }
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| 233 |
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| 234 | inline int geq(Real a,Real b,Real t=TRASH)
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| 235 | {
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| 236 | return t > b - a;
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| 237 | }
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| 238 |
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| 239 | inline int le(Real a,Real b,Real t=TRASH)
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| 240 | {
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| 241 | return !geq(a,b,t);
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| 242 | }
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| 243 |
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| 244 | inline int ge(Real a,Real b,Real t=TRASH)
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| 245 | {
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| 246 | return !leq(a,b,t);
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| 247 | }
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| 248 |
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| 249 | // ========================================================
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| 250 |
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| 251 | // -------------------------------------------------------------------
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| 252 | // Indents to a given stream by the number of spaces specified.
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| 253 | // This routine is located in main.cpp, for lack of a better place.
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| 254 | // -------------------------------------------------------------------
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| 255 | void indent(std::ostream &app, int ind);
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| 256 |
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| 257 | // ---------------------------------------------------------
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| 258 | // RandomValue
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| 259 | // Returns a random Realing-point value between the two
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| 260 | // values. Range is inclusive; the function should
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| 261 | // occasionally return exactly a or b.
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| 262 | // ---------------------------------------------------------
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| 263 | inline Real RandomValue(Real a, Real b)
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| 264 | {
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| 265 | Real range = (Real) Abs(a - b);
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| 266 | return ((Real)rand() / RAND_MAX) * range + ((a < b) ? a : b);
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| 267 | }
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| 268 |
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| 269 |
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| 270 | inline Real sqr(Real a)
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| 271 | {
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| 272 | return a*a;
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| 273 | }
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| 274 |
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| 275 |
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| 276 | template <class T>
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| 277 | void Swap(T &a,T &b)
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| 278 | {
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| 279 | T c;
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| 280 | c = b;
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| 281 | b = a;
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| 282 | a = c;
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| 283 | }
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| 284 |
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| 285 | template <class T>
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| 286 | int eq(T &a, T &b, T &c, T &d) {
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| 287 | return a == b && c==d && b==c;
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| 288 | }
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| 289 |
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| 290 | template <class T>
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| 291 | T Min(T a,T b)
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| 292 | {
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| 293 | return a<b ? a : b;
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| 294 | }
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| 295 |
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| 296 | template <class T>
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| 297 | T Max(T a,T b)
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| 298 | {
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| 299 | return a>b ? a : b;
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| 300 | }
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| 301 |
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| 302 |
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[2966] | 303 | Real Random(Real maxValue);
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| 304 | int Random(int maxValue);
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[2879] | 305 | void Randomize();
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| 306 | void Randomize(unsigned int seed);
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| 307 |
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| 308 |
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| 309 | void GetKey(char *s=NULL);
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| 310 |
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| 311 | inline Real Deg2Rad(const Real a)
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| 312 | {
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| 313 | return a * (M_PI / 180.0f);
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| 314 | }
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| 315 |
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| 316 | inline Real Rad2Deg(const Real a) {
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| 317 | return a * (180.0f/M_PI);
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| 318 | }
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| 319 |
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[2966] | 320 | inline Real Clamp(float x, float minVal, float maxVal)
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| 321 | {
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| 322 | if (x < minVal) return minVal;
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| 323 | if (x > maxVal) return maxVal;
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[2879] | 324 |
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[2966] | 325 | return x;
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| 326 | }
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[2879] | 327 |
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| 328 |
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| 329 | /** Limits.
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| 330 | This class encapsulates all the concessions to Realing-point
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| 331 | error made by ray tracers.
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| 332 | */
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| 333 | class Limits
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| 334 | {
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| 335 | public:
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| 336 | // This is the number used to reject too-close intersections.
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| 337 | // The default value is 1.0.
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| 338 | static Real Threshold;
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| 339 |
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| 340 | // This is a "small" number. Less than this number is assumed to
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| 341 | // be 0, when such things matter.
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| 342 | // The default value is 0.1.
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| 343 | static Real Small;
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| 344 |
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| 345 | // This is an impractically "large" number, used for intersection
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| 346 | // parameters out to infinity (e.g. the span resulting from an
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| 347 | // FindAllIntersections operation on a plane).
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| 348 | // The default value is 100000.
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| 349 | static Real Infinity;
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| 350 | };
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| 351 |
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| 352 | // ---------------------------------------------------------
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| 353 | // EpsilonEqual(x,y)
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| 354 | // Returns if two values are equal or not (by epsilon)
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| 355 | // ---------------------------------------------------------
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| 356 | inline int
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| 357 | EpsilonEqual(const Real &x, const Real &y)
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| 358 | {
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| 359 | return fabs(x-y) < Limits::Small;
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| 360 | }
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| 361 |
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| 362 | // ---------------------------------------------------------
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| 363 | // EpsilonEqual(x)
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| 364 | // Returns if a value is zero (+/- epsilon)
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| 365 | // ---------------------------------------------------------
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| 366 | inline int
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| 367 | EpsilonEqual(const Real &x)
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| 368 | {
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| 369 | return fabs(x) < Limits::Small;
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| 370 | }
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| 371 |
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| 372 | // ---------------------------------------------------------
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| 373 | // EpsilonEqual(x,y,epsilon)
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| 374 | // Returns if two values are equal or not by a given epsilon
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| 375 | // ---------------------------------------------------------
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| 376 | inline int
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| 377 | EpsilonEqual(const Real &x, const Real &y, const Real &epsilon)
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| 378 | {
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| 379 | return fabs(x-y) < epsilon;
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| 380 | }
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| 381 |
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| 382 | // ---------------------------------------------------------
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| 383 | // InRange
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| 384 | // Returns nonzero if min <= candidate <= max.
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| 385 | // ---------------------------------------------------------
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| 386 | template<class T>
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| 387 | inline int
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| 388 | InRange(T min, T max, T candidate)
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| 389 | {
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| 390 | return (candidate >= min) && (candidate <= max);
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| 391 | }
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| 392 |
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| 393 | // --------------------------------------------------------------
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| 394 | // string function with new operator
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| 395 |
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| 396 | inline char*
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| 397 | StrDup(char *src) {
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| 398 | char *p;
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| 399 | for (p = src; *p++; );
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| 400 | char *dest = new char[p-src];
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| 401 | for ( p = dest;(*p++ = *src++) != 0; );
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| 402 | return dest;
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| 403 | }
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| 404 |
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| 405 |
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| 406 | inline char *
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| 407 | StrToLower(char *src) {
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| 408 | char *p;
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| 409 | for (p = src; *p; p++)
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| 410 | *p = tolower(*p);
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| 411 | return src;
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| 412 | }
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| 413 |
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| 414 | // return l = log2(a) if a is a power of two else -ceillog2(a)
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| 415 | inline int
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| 416 | GetLog2(int a)
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| 417 | {
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| 418 | int i, x;
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| 419 | i = 0;
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| 420 | x = 1;
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| 421 |
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| 422 | while (x < a) {
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| 423 | i++;
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| 424 | x <<= 1;
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| 425 | }
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| 426 |
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| 427 | return (x==a) ? i: -i;
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| 428 | }
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| 429 |
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| 430 |
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| 431 | // return ceil(log2(a)) even if a is not a power of two
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| 432 | // Example:
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| 433 | // GetCeilLog2(15) = 4
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| 434 | // GetCeilLog2(16) = 4
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| 435 | // GetCeilLog2(17) = 5
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| 436 | inline int
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| 437 | GetCeilLog2(int a)
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| 438 | {
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| 439 | int i, x;
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| 440 | if (a < 0)
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| 441 | return -1;
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| 442 |
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| 443 | i = 0;
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| 444 | x = 1;
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| 445 |
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| 446 | while (x < a) {
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| 447 | i++;
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| 448 | x <<= 1;
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| 449 | }
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| 450 |
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| 451 | return i;
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| 452 | }
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| 453 |
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| 454 |
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[3019] | 455 | char *GetAbsPath(char *path);
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[2879] | 456 |
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| 457 |
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| 458 | std::string
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| 459 | ReplaceSuffix(const std::string &filename, const std::string &a, const std::string &b);
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| 460 |
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| 461 |
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| 462 | int
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| 463 | SplitFilenames(const std::string &str, std::vector<std::string> &filenames);
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| 464 |
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| 465 | bool
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| 466 | FileExists(char *filename);
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| 467 |
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| 468 | bool
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| 469 | CreateDir(char *dir);
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| 470 |
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| 471 | char *
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| 472 | GetPath(const char *s);
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| 473 |
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| 474 | char *
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| 475 | StripPath(const char *s);
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| 476 |
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| 477 |
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| 478 |
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| 479 | ///////////
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| 480 | //-- typedefs
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| 481 |
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| 482 | typedef std::vector<BvhNode *> BvhNodeContainer;
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| 483 | typedef std::vector<SceneEntity *> SceneEntityContainer;
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| 484 | typedef std::vector<BvhLeaf *> BvhLeafContainer;
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| 485 | typedef std::vector<Triangle3> TriangleContainer;
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| 486 | typedef std::vector<OcclusionQuery *> QueryContainer;
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| 487 |
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| 488 | typedef std::queue<OcclusionQuery *> QueryQueue;
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| 489 | typedef std::queue<BvhNode *> BvhNodeQueue;
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| 490 |
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[3038] | 491 |
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| 492 | ///////
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| 493 | //-- container definitions
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| 494 |
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[2911] | 495 | typedef std::vector<Shape *> ShapeContainer;
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[2980] | 496 | typedef std::vector<Geometry *> GeometryContainer;
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[2911] | 497 | typedef std::vector<LODLevel *> LODLevelContainer;
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| 498 | typedef std::vector<Polygon3 *> PolygonContainer;
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[3019] | 499 | typedef std::vector<LODLevel *> LODContainer;
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[3036] | 500 | typedef std::vector<Transform3 *> TransformContainer;
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| 501 | typedef std::vector<Texture *> TextureContainer;
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| 502 | typedef std::vector<Material *> MaterialContainer;
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| 503 | typedef std::vector<GPUProgramParameters *> GPUParamContainer;
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[3042] | 504 | typedef std::vector<FrameBufferObject *> FBOContainer;
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| 505 | typedef std::vector<ShaderProgram *> ShaderContainer;
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| 506 | typedef std::vector<Technique *> TechniqueContainer;
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[3070] | 507 |
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[2913] | 508 | typedef std::vector<Vector3> VertexArray;
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[3070] | 509 | typedef std::vector<LODLevel> LODLevelArray;
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[2913] | 510 |
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[2980] | 511 | typedef std::pair<float, float> Texcoord2;
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[2913] | 512 |
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[2980] | 513 |
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[3022] | 514 |
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| 515 | // default model directory
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| 516 | static std::string model_path("data/city/model/");
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| 517 | // log output
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[2879] | 518 | static std::ofstream Debug("debug.log");
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| 519 |
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| 520 |
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| 521 | #define INITIAL_TRIANGLES_PER_VIRTUAL_LEAVES 1000
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| 522 |
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| 523 | }
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| 524 |
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[3021] | 525 |
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| 526 |
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[2879] | 527 | #endif
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| 528 |
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| 529 |
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| 530 |
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| 531 |
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| 532 |
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| 533 |
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| 534 |
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| 535 |
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