Package org.jbox2d.collision

Class TimeOfImpact

java.lang.Object

org.jbox2d.collision.TimeOfImpact

public class TimeOfImpact
extends java.lang.Object

Class used for computing the time of impact. This class should not be constructed usually, just retrieve from the SingletonPool#getTOI().

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TimeOfImpact.TOIInput	Input parameters for TOI
static class	TimeOfImpact.TOIOutput	Output parameters for TimeOfImpact
static class	TimeOfImpact.TOIOutputState

Field Summary

Fields

Modifier and Type	Field	Description
private Distance.SimplexCache	cache
private DistanceInput	distanceInput
private DistanceOutput	distanceOutput
private SeparationFunction	fcn
private int[]	indexes
static int	MAX_ITERATIONS
private IWorldPool	pool
private Sweep	sweepA
private Sweep	sweepB
static int	toiCalls
static int	toiIters
static int	toiMaxIters
static int	toiMaxRootIters
static int	toiRootIters
private Transform	xfA
private Transform	xfB

Constructor Summary

Constructors

Constructor	Description
TimeOfImpact(IWorldPool argPool)

Method Summary

Modifier and Type	Method	Description
void	timeOfImpact(TimeOfImpact.TOIOutput output, TimeOfImpact.TOIInput input)	Compute the upper bound on time before two shapes penetrate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAX_ITERATIONS

public static final int MAX_ITERATIONS

See Also:

Constant Field Values

toiCalls

public static int toiCalls

toiIters

public static int toiIters

toiMaxIters

public static int toiMaxIters

toiRootIters

public static int toiRootIters

toiMaxRootIters

public static int toiMaxRootIters

cache

private final Distance.SimplexCache cache

distanceInput

private final DistanceInput distanceInput

xfA

private final Transform xfA

xfB

private final Transform xfB

distanceOutput

private final DistanceOutput distanceOutput

fcn

private final SeparationFunction fcn

indexes

private final int[] indexes

sweepA

private final Sweep sweepA

sweepB

private final Sweep sweepB

pool

private final IWorldPool pool

Constructor Detail

TimeOfImpact

public TimeOfImpact(IWorldPool argPool)

Method Detail

timeOfImpact

public final void timeOfImpact(TimeOfImpact.TOIOutput output,
                               TimeOfImpact.TOIInput input)

Compute the upper bound on time before two shapes penetrate. Time is represented as a fraction between [0,tMax]. This uses a swept separating axis and may miss some intermediate, non-tunneling collision. If you change the time interval, you should call this function again. Note: use Distance to compute the contact point and normal at the time of impact.

Parameters:

output -

input -