C# Class Box2D.Collision.Shapes.Shape

A shape is used for collision detection. You can create a shape however you like. Shapes used for simulation in World are created automatically when a Fixture is created. Shapes may encapsulate a one or more child shapes.

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Public Methods

Method	Description
Clone ( ) : Shape	* /// Compute the volume and centroid of this shape intersected with a half plane * ///
ComputeAABB ( AABB aabb, Transform xf, int childIndex ) : void	Given a transform, compute the associated axis aligned bounding box for a child 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.
Raycast ( RayCastOutput output, RayCastInput input, Transform transform, int childIndex ) : bool	Cast a ray against a child shape.
TestPoint ( Transform xf, Vec2 p ) : bool	Test a point for containment in this shape. This only works for convex shapes.

Protected Methods

Method	Description
Shape ( ShapeType type ) : Box2D.Common

Method Details

Clone() public abstract method

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

public abstract Clone ( ) : Shape
return	Shape

ComputeAABB() public abstract method

Given a transform, compute the associated axis aligned bounding box for a child shape.

public abstract ComputeAABB ( AABB aabb, Transform xf, int childIndex ) : void
aabb	AABB	returns the axis aligned box.
xf	Box2D.Common.Transform	the world transform of the shape.
childIndex	int
return	void

ComputeMass() public abstract method

Compute the mass properties of this shape using its dimensions and density. The inertia tensor is computed about the local origin.

public abstract ComputeMass ( MassData massData, float density ) : void
massData	MassData	returns the mass data for this shape.
density	float	the density in kilograms per meter squared.
return	void

Raycast() public abstract method

Cast a ray against a child shape.

public abstract Raycast ( RayCastOutput output, RayCastInput input, Transform transform, int childIndex ) : bool
output	RayCastOutput	the ray-cast results.
input	RayCastInput	the ray-cast input parameters.
transform	Box2D.Common.Transform	the transform to be applied to the shape.
childIndex	int	the child shape index
return	bool

Shape() protected method

protected Shape ( ShapeType type ) : Box2D.Common
type	ShapeType
return	Box2D.Common

TestPoint() public abstract method

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

public abstract TestPoint ( Transform xf, Vec2 p ) : bool
xf	Box2D.Common.Transform	the shape world transform.
p	Box2D.Common.Vec2	a point in world coordinates.
return	bool