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b2Settings.h
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    00001 /*
    00002 * Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
    00003 *
    00004 * This software is provided 'as-is', without any express or implied
    00005 * warranty.  In no event will the authors be held liable for any damages
    00006 * arising from the use of this software.
    00007 * Permission is granted to anyone to use this software for any purpose,
    00008 * including commercial applications, and to alter it and redistribute it
    00009 * freely, subject to the following restrictions:
    00010 * 1. The origin of this software must not be misrepresented; you must not
    00011 * claim that you wrote the original software. If you use this software
    00012 * in a product, an acknowledgment in the product documentation would be
    00013 * appreciated but is not required.
    00014 * 2. Altered source versions must be plainly marked as such, and must not be
    00015 * misrepresented as being the original software.
    00016 * 3. This notice may not be removed or altered from any source distribution.
    00017 */
    00018
    00019 #ifndef B2_SETTINGS_H
    00020 #define B2_SETTINGS_H
    00021
    00022 #include <cassert>
    00023 #include <cmath>
    00024
    00025 #define B2_NOT_USED(x) ((void)(x))
    00026 #define b2Assert(A) assert(A)
    00027
    00028 typedef signed char     int8;
    00029 typedef signed short int16;
    00030 typedef signed int int32;
    00031 typedef unsigned char uint8;
    00032 typedef unsigned short uint16;
    00033 typedef unsigned int uint32;
    00034 typedef float float32;
    00035 typedef double float64;
    00036
    00037 #define b2_maxFloat             FLT_MAX
    00038 #define b2_epsilon              FLT_EPSILON
    00039 #define b2_pi                   3.14159265359f
    00040
    00044
    00045 // Collision
    00046
    00049 #define b2_maxManifoldPoints    2
    00050
    00053 #define b2_maxPolygonVertices   8
    00054
    00058 #define b2_aabbExtension                0.1f
    00059
    00063 #define b2_aabbMultiplier               2.0f
    00064
    00067 #define b2_linearSlop                   0.005f
    00068
    00071 #define b2_angularSlop                  (2.0f / 180.0f * b2_pi)
    00072
    00076 #define b2_polygonRadius                (2.0f * b2_linearSlop)
    00077
    00079 #define b2_maxSubSteps                  8
    00080
    00081
    00082 // Dynamics
    00083
    00085 #define b2_maxTOIContacts                       32
    00086
    00089 #define b2_velocityThreshold            1.0f
    00090
    00093 #define b2_maxLinearCorrection          0.2f
    00094
    00097 #define b2_maxAngularCorrection         (8.0f / 180.0f * b2_pi)
    00098
    00101 #define b2_maxTranslation                       2.0f
    00102 #define b2_maxTranslationSquared        (b2_maxTranslation * b2_maxTranslation)
    00103
    00106 #define b2_maxRotation                          (0.5f * b2_pi)
    00107 #define b2_maxRotationSquared           (b2_maxRotation * b2_maxRotation)
    00108
    00112 #define b2_baumgarte                            0.2f
    00113 #define b2_toiBaugarte                          0.75f
    00114
    00115
    00116 // Sleep
    00117
    00119 #define b2_timeToSleep                          0.5f
    00120
    00122 #define b2_linearSleepTolerance         0.01f
    00123
    00125 #define b2_angularSleepTolerance        (2.0f / 180.0f * b2_pi)
    00126
    00127 // Memory Allocation
    00128
    00130 void* b2Alloc(int32 size);
    00131
    00133 void b2Free(void* mem);
    00134
    00136 void b2Log(const char* string, ...);
    00137
    00140 struct b2Version
    00141 {
    00142         int32 major;
    00143         int32 minor;
    00144         int32 revision;
    00145 };
    00146
    00148 extern b2Version b2_version;
    00149
    00150 #endif

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