Describes a contact between two physics bodies. More...

#include <a3d/physics/PhysicsContact.h>

Public Member Functions
std::weak_ptr< Node >	nodeA () const
	Returns the first contact node as a weak reference. More...

std::weak_ptr< Node >	nodeB () const
	Returns the second contact node as a weak reference. More...

const math::vec3 &	contactPoint () const
	Returns the world-space midpoint between the two body contact points. More...

const math::vec3 &	contactNormal () const
	Returns the world-space contact normal pointing from nodeB() toward nodeA(). More...

float	collisionImpulse () const
	Returns the collision impulse associated with the represented contact point. More...

float	penetrationDistance () const
	Returns the penetration depth, where zero indicates no penetration and positive values indicate overlap. More...

float	sweepTestFraction () const
	Returns the sweep-test fraction associated with this contact; ordinary contact results use zero. More...

Detailed Description

Describes a contact between two physics bodies.

The participating nodes are retained weakly. When a body pair has multiple underlying contact points, PhysicsContact represents the point with the greatest collision impulse, using deepest penetration as a tie-breaker. Contact persistence may keep a logical contact active across very small separations used to maintain stable simulation contact.

Definition at line 29 of file PhysicsContact.h.

Member Function Documentation

◆ collisionImpulse()

float a3d::PhysicsContact::collisionImpulse ( ) const

Returns the collision impulse associated with the represented contact point.

◆ contactNormal()

const math::vec3 & a3d::PhysicsContact::contactNormal ( ) const

Returns the world-space contact normal pointing from nodeB() toward nodeA().

◆ contactPoint()

const math::vec3 & a3d::PhysicsContact::contactPoint ( ) const

Returns the world-space midpoint between the two body contact points.

◆ nodeA()

std::weak_ptr< Node > a3d::PhysicsContact::nodeA ( ) const

Returns the first contact node as a weak reference.

◆ nodeB()

std::weak_ptr< Node > a3d::PhysicsContact::nodeB ( ) const

Returns the second contact node as a weak reference.

◆ penetrationDistance()

float a3d::PhysicsContact::penetrationDistance ( ) const

Returns the penetration depth, where zero indicates no penetration and positive values indicate overlap.

◆ sweepTestFraction()

float a3d::PhysicsContact::sweepTestFraction ( ) const

Returns the sweep-test fraction associated with this contact; ordinary contact results use zero.

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

a3d/physics/PhysicsContact.h

Public Member Functions