#include "b2_settings.h"
#include <stddef.h>
#include <assert.h>
#include <float.h>

Classes
struct	b2Version

Macros
#define	b2DEBUG

#define	B2_NOT_USED(x)

#define	b2Assert(A)

#define	b2_maxFloat FLT_MAX

#define	b2_epsilon FLT_EPSILON

#define	b2_pi 3.14159265359f

#define	b2_maxManifoldPoints 2

#define	b2_aabbExtension (0.1f * b2_lengthUnitsPerMeter)

#define	b2_aabbMultiplier 4.0f

#define	b2_linearSlop (0.005f * b2_lengthUnitsPerMeter)

#define	b2_angularSlop (2.0f / 180.0f * b2_pi)

#define	b2_polygonRadius (2.0f * b2_linearSlop)

#define	b2_maxSubSteps 8
	Maximum number of sub-steps per contact in continuous physics simulation.

#define	b2_maxTOIContacts 32
	Maximum number of contacts to be handled to solve a TOI impact.

#define	b2_maxLinearCorrection (0.2f * b2_lengthUnitsPerMeter)

#define	b2_maxAngularCorrection (8.0f / 180.0f * b2_pi)

#define	b2_maxTranslation (2.0f * b2_lengthUnitsPerMeter)

#define	b2_maxTranslationSquared (b2_maxTranslation * b2_maxTranslation)

#define	b2_maxRotation (0.5f * b2_pi)

#define	b2_maxRotationSquared (b2_maxRotation * b2_maxRotation)

#define	b2_baumgarte 0.2f

#define	b2_toiBaumgarte 0.75f

#define	b2_timeToSleep 0.5f
	The time that a body must be still before it will go to sleep.

#define	b2_linearSleepTolerance (0.01f * b2_lengthUnitsPerMeter)
	A body cannot sleep if its linear velocity is above this tolerance.

#define	b2_angularSleepTolerance (2.0f / 180.0f * b2_pi)
	A body cannot sleep if its angular velocity is above this tolerance.

Functions
void	b2OpenDump (const char *fileName)
	Dump to a file. Only one dump file allowed at a time.

void	b2Dump (const char *string,...)

void	b2CloseDump ()

Variables
B2_API b2Version	b2_version
	Current version.

Detailed Description

Global tuning constants based on meters-kilograms-seconds (MKS) units.

Macro Definition Documentation

◆ b2_aabbExtension

#define b2_aabbExtension (0.1f * b2_lengthUnitsPerMeter)

This is used to fatten AABBs in the dynamic tree. This allows proxies to move by a small amount without triggering a tree adjustment. This is in meters.

◆ b2_aabbMultiplier

#define b2_aabbMultiplier 4.0f

This is used to fatten AABBs in the dynamic tree. This is used to predict the future position based on the current displacement. This is a dimensionless multiplier.

◆ b2_angularSlop

#define b2_angularSlop (2.0f / 180.0f * b2_pi)

A small angle used as a collision and constraint tolerance. Usually it is chosen to be numerically significant, but visually insignificant.

◆ b2_baumgarte

#define b2_baumgarte 0.2f

This scale factor controls how fast overlap is resolved. Ideally this would be 1 so that overlap is removed in one time step. However using values close to 1 often lead to overshoot.

◆ b2_linearSlop

#define b2_linearSlop (0.005f * b2_lengthUnitsPerMeter)

A small length used as a collision and constraint tolerance. Usually it is chosen to be numerically significant, but visually insignificant. In meters.

◆ b2_maxAngularCorrection

#define b2_maxAngularCorrection (8.0f / 180.0f * b2_pi)

The maximum angular position correction used when solving constraints. This helps to prevent overshoot.

◆ b2_maxLinearCorrection

#define b2_maxLinearCorrection (0.2f * b2_lengthUnitsPerMeter)

The maximum linear position correction used when solving constraints. This helps to prevent overshoot. Meters.

◆ b2_maxManifoldPoints

#define b2_maxManifoldPoints 2

The maximum number of contact points between two convex shapes. Do not change this value.

◆ b2_maxRotation

#define b2_maxRotation (0.5f * b2_pi)

The maximum angular velocity of a body. This limit is very large and is used to prevent numerical problems. You shouldn't need to adjust this.

◆ b2_maxTranslation

#define b2_maxTranslation (2.0f * b2_lengthUnitsPerMeter)

The maximum linear translation of a body per step. This limit is very large and is used to prevent numerical problems. You shouldn't need to adjust this. Meters.

◆ B2_NOT_USED

#define B2_NOT_USED ( x )

Value:

((void)(x))

◆ b2_polygonRadius

#define b2_polygonRadius (2.0f * b2_linearSlop)

The radius of the polygon/edge shape skin. This should not be modified. Making this smaller means polygons will have an insufficient buffer for continuous collision. Making it larger may create artifacts for vertex collision.

◆ b2Assert

#define b2Assert ( A )