Module org.dyn4j

Package org.dyn4j.collision.manifold

Class ManifoldPoint

Object

ManifoldPoint

All Implemented Interfaces:

Copyable<ManifoldPoint>, Shiftable

public class ManifoldPoint
extends Object
implements Shiftable, Copyable<ManifoldPoint>

Represents a single contact point in a contact Manifold.

The depth represents the distance along the Manifold normal to this contact point. This can vary for every ManifoldPoint in a Manifold.

Since:

1.0.0

Version:

4.0.0

Author:

William Bittle

See Also:

Manifold

Field Summary

Fields

Modifier and Type	Field	Description
protected double	depth	The penetration depth
protected ManifoldPointId	id	The id for this manifold point
protected Vector2	point	The point in world coordinates

Constructor Summary

Constructors

Modifier	Constructor	Description
	ManifoldPoint(ManifoldPointId id)	Optional constructor.
protected	ManifoldPoint(ManifoldPointId id, Vector2 point, double depth)	Full constructor.

Method Summary

Modifier and Type	Method	Description
ManifoldPoint	copy()	Returns a deep copy of this object.
void	copy(ManifoldPoint manifoldPoint)	Copies (deep) the given ManifoldPoint to this ManifoldPoint.
double	getDepth()	Returns the collision depth of the manifold point.
ManifoldPointId	getId()	Returns the id for this manifold point.
Vector2	getPoint()	Returns the contact point.
void	setDepth(double depth)	Sets the collision depth of the manifold point.
void	setPoint(Vector2 point)	Sets the contact point.
void	shift(Vector2 shift)	Translates the object to match the given coordinate shift.
String	toString()

Methods inherited from class Object

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

Field Detail

id

protected ManifoldPointId id

The id for this manifold point

point

protected final Vector2 point

The point in world coordinates

depth

protected double depth

The penetration depth

Constructor Detail

ManifoldPoint

public ManifoldPoint(ManifoldPointId id)

Optional constructor.

Parameters:

id - the id for this manifold point; cannot be null

ManifoldPoint

protected ManifoldPoint(ManifoldPointId id,
                        Vector2 point,
                        double depth)

Full constructor.

Parameters:

id - the id for this manifold point

point - the manifold point in world coordinates

depth - the penetration depth

Method Detail

toString

public String toString()

Overrides:

toString in class Object

getId

public ManifoldPointId getId()

Returns the id for this manifold point.

Returns:

ManifoldPointId

getPoint

public Vector2 getPoint()

Returns the contact point.

Returns:

Vector2 the point in world coordinates

setPoint

public void setPoint(Vector2 point)

Sets the contact point.

Parameters:

point - the point in world coordinates

Since:

3.1.5

getDepth

public double getDepth()

Returns the collision depth of the manifold point.

Returns:

double

setDepth

public void setDepth(double depth)

Sets the collision depth of the manifold point.

Parameters:

depth - the depth

Since:

3.1.5

copy

public void copy(ManifoldPoint manifoldPoint)

Copies (deep) the given ManifoldPoint to this ManifoldPoint.

Parameters:

manifoldPoint - the manifold point to copy

Since:

4.0.0

shift

public void shift(Vector2 shift)

Description copied from interface: Shiftable

Translates the object to match the given coordinate shift.

Specified by:

shift in interface Shiftable

Parameters:

shift - the amount to shift along the x and y axes

copy

public ManifoldPoint copy()

Description copied from interface: Copyable

Returns a deep copy of this object.

Specified by:

copy in interface Copyable<ManifoldPoint>

Returns:

T