C# Class Box2DX.Collision.Shape

Inheritance: IDisposable

Protected Properties

Property	Type	Description
_type	ShapeType

Method	Description
ComputeAABB ( AABB &aabb, Box2DX.Common.Transform xf ) : void	Given a Transform, compute the associated axis aligned bounding box for this shape.
ComputeMass ( MassData &massData, float density ) : void	Compute the mass properties of this shape using its dimensions and density. The inertia tensor is computed about the local origin, not the centroid.
ComputeSubmergedArea ( Vector2 normal, float offset, Box2DX.Common.Transform xf, Vector2 &c ) : float	Compute the volume and centroid of this shape intersected with a half plane.
ComputeSweepRadius ( Vector2 pivot ) : float	Compute the sweep radius. This is used for conservative advancement (continuous collision detection).
Dispose ( ) : void
GetSupport ( Vector2 d ) : int
GetSupportVertex ( Vector2 d ) : Vector2
GetVertex ( int index ) : Vector2
TestPoint ( Box2DX.Common.Transform xf, Vector2 p ) : bool	Test a point for containment in this shape. This only works for convex shapes.
TestSegment ( Box2DX.Common.Transform xf, float &lambda, Vector2 &normal, Segment segment, float maxLambda ) : SegmentCollide	Perform a ray cast against this shape.

Method	Description
Shape ( ) : System

Given a Transform, compute the associated axis aligned bounding box for this shape.

public abstract ComputeAABB ( AABB &aabb, Box2DX.Common.Transform xf ) : void
aabb	AABB	Returns the axis aligned box.
xf	Box2DX.Common.Transform	The world Transform of the shape.
return	void

Compute the mass properties of this shape using its dimensions and density. The inertia tensor is computed about the local origin, not the centroid.

public abstract ComputeMass ( MassData &massData, float density ) : void
massData	MassData	Returns the mass data for this shape
density	float
return	void

Compute the volume and centroid of this shape intersected with a half plane.

public abstract ComputeSubmergedArea ( Vector2 normal, float offset, Box2DX.Common.Transform xf, Vector2 &c ) : float
normal	Vector2	Normal the surface normal.
offset	float	Offset the surface offset along normal.
xf	Box2DX.Common.Transform	The shape Transform.
c	Vector2	Returns the centroid.
return	float

Compute the sweep radius. This is used for conservative advancement (continuous collision detection).

public abstract ComputeSweepRadius ( Vector2 pivot ) : float
pivot	Vector2	Pivot is the pivot point for rotation.
return	float

public Dispose ( ) : void
return	void

public abstract GetSupport ( Vector2 d ) : int
d	Vector2
return	int

public abstract GetSupportVertex ( Vector2 d ) : Vector2
d	Vector2
return	Vector2

public abstract GetVertex ( int index ) : Vector2
index	int
return	Vector2

protected Shape ( ) : System
return	System

Test a point for containment in this shape. This only works for convex shapes.

public abstract TestPoint ( Box2DX.Common.Transform xf, Vector2 p ) : bool
xf	Box2DX.Common.Transform	The shape world Transform.
p	Vector2	A point in world coordinates.
return	bool

Perform a ray cast against this shape.

public abstract TestSegment ( Box2DX.Common.Transform xf, float &lambda, Vector2 &normal, Segment segment, float maxLambda ) : SegmentCollide
xf	Box2DX.Common.Transform	The shape world Transform.
lambda	float	Returns the hit fraction. You can use this to compute the contact point /// p = (1 - lambda) * segment.P1 + lambda * segment.P2.
normal	Vector2	Returns the normal at the contact point. If there is no intersection, /// the normal is not set.
segment	Segment	Defines the begin and end point of the ray cast.
maxLambda	float	A number typically in the range [0,1].
return	SegmentCollide

protected ShapeType _type
return	ShapeType