A manifold point is a contact point belonging to a contact manifold. It holds details related to the geometry and dynamics of the contact points. Box2D uses speculative collision so some contact points may be separated. You may use the maxNormalImpulse to determine if there was an interaction during the time step. More...

Public Attributes
readonly Vec2	Point
	Location of the contact point in world space. Subject to precision loss at large coordinates.

readonly Vec2	AnchorA
	Location of the contact point relative to shapeA's origin in world space.

readonly Vec2	AnchorB
	Location of the contact point relative to shapeB's origin in world space.

readonly float	Separation
	The separation of the contact point, negative if penetrating.

readonly float	NormalImpulse
	The impulse along the manifold normal vector.

readonly float	TangentImpulse
	The friction impulse.

readonly float	TotalNormalImpulse
	The total normal impulse applied across sub-stepping and restitution. This is important to identify speculative contact points that had an interaction in the time step.

readonly float	NormalVelocity
	Relative normal velocity pre-solve. Used for hit events. If the normal impulse is zero then there was no hit. Negative means shapes are approaching.

readonly ushort	Id
	Uniquely identifies a contact point between two shapes.

Properties
bool	Persisted `[get]`
	Did this contact point exist the previous step?

Detailed Description

A manifold point is a contact point belonging to a contact manifold. It holds details related to the geometry and dynamics of the contact points. Box2D uses speculative collision so some contact points may be separated. You may use the maxNormalImpulse to determine if there was an interaction during the time step.

The documentation for this struct was generated from the following file:

src/Box2DBindings/Collision/ManifoldPoint.cs

Public Attributes

Properties

Detailed Description