Box2D
2.4.1
A 2D physics engine for games
b2_common.h
Go to the documentation of this file.
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// MIT License
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// Copyright (c) 2019 Erin Catto
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef B2_COMMON_H
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#define B2_COMMON_H
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#include "
b2_settings.h
"
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#include <stddef.h>
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#include <assert.h>
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#include <float.h>
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#if !defined(NDEBUG)
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#define b2DEBUG
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#endif
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#define B2_NOT_USED(x) ((void)(x))
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#define b2Assert(A) assert(A)
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#define b2_maxFloat FLT_MAX
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#define b2_epsilon FLT_EPSILON
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#define b2_pi 3.14159265359f
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// Collision
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#define b2_maxManifoldPoints 2
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#define b2_aabbExtension (0.1f * b2_lengthUnitsPerMeter)
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#define b2_aabbMultiplier 4.0f
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#define b2_linearSlop (0.005f * b2_lengthUnitsPerMeter)
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#define b2_angularSlop (2.0f / 180.0f * b2_pi)
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#define b2_polygonRadius (2.0f * b2_linearSlop)
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#define b2_maxSubSteps 8
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// Dynamics
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#define b2_maxTOIContacts 32
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#define b2_maxLinearCorrection (0.2f * b2_lengthUnitsPerMeter)
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#define b2_maxAngularCorrection (8.0f / 180.0f * b2_pi)
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#define b2_maxTranslation (2.0f * b2_lengthUnitsPerMeter)
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#define b2_maxTranslationSquared (b2_maxTranslation * b2_maxTranslation)
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#define b2_maxRotation (0.5f * b2_pi)
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#define b2_maxRotationSquared (b2_maxRotation * b2_maxRotation)
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#define b2_baumgarte 0.2f
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#define b2_toiBaumgarte 0.75f
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// Sleep
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#define b2_timeToSleep 0.5f
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#define b2_linearSleepTolerance (0.01f * b2_lengthUnitsPerMeter)
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#define b2_angularSleepTolerance (2.0f / 180.0f * b2_pi)
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void
b2OpenDump
(
const
char
* fileName);
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void
b2Dump(
const
char
*
string
, ...);
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void
b2CloseDump();
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struct
b2Version
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{
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int32
major
;
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int32
minor
;
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int32
revision
;
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};
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extern
B2_API
b2Version
b2_version
;
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#endif
b2_settings.h
b2Version::minor
int32 minor
incremental changes
Definition:
b2_common.h:131
b2_version
B2_API b2Version b2_version
Current version.
b2Version::major
int32 major
significant changes
Definition:
b2_common.h:130
b2Version
Definition:
b2_common.h:128
b2OpenDump
void b2OpenDump(const char *fileName)
Dump to a file. Only one dump file allowed at a time.
b2Version::revision
int32 revision
bug fixes
Definition:
b2_common.h:132
include
box2d
b2_common.h
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