b2CircleShape
b2CircleShape
Box2D.Collision.ShapesInheritance: System.Object → Box2D.Collision.Shapes.b2Shape
Constructors
b2CircleShape()
b2CircleShape()()
b2CircleShape(b2CircleShape)
b2CircleShape(b2CircleShape)(Box2D.Collision.Shapes.b2CircleShape copy)
Parameters:
copy
(Box2D.Collision.Shapes.b2CircleShape)Fields
Methods
Clone()
Box2D.Collision.Shapes.b2Shape Clone()()
Clone the concrete shape using the provided allocator.
Returns:
Box2D.Collision.Shapes.b2Shape
Example
ComputeAABB(out b2AABB, ref b2Transform, int)
ComputeAABB(out b2AABB, ref b2Transform, int)(Box2D.Collision.b2AABB output, Box2D.Common.b2Transform transform, System.Int32 childIndex)
Given a transform, compute the associated axis aligned bounding box for a child shape. @param aabb returns the axis aligned box. @param xf the world transform of the shape. @param childIndex the child shape
Parameters:
output
(Box2D.Collision.b2AABB)transform
(Box2D.Common.b2Transform)childIndex
(System.Int32)Example
ComputeMass(float)
Box2D.Collision.Shapes.b2MassData ComputeMass(float)(System.Single density)
Compute the mass properties of this shape using its dimensions and density. The inertia tensor is computed about the local origin. @param massData returns the mass data for this shape. @param density the density in kilograms per meter squared.
Parameters:
density
(System.Single)Returns:
Box2D.Collision.Shapes.b2MassData
Example
GetChildCount()
System.Int32 GetChildCount()()
Returns:
System.Int32
Example
GetSupport(b2Vec2)
System.Int32 GetSupport(b2Vec2)(Box2D.Common.b2Vec2 d)
Parameters:
d
(Box2D.Common.b2Vec2)Returns:
System.Int32
GetSupportVertex(b2Vec2)
Box2D.Common.b2Vec2 GetSupportVertex(b2Vec2)(Box2D.Common.b2Vec2 d)
Parameters:
d
(Box2D.Common.b2Vec2)Returns:
Box2D.Common.b2Vec2
GetVertex(int)
Box2D.Common.b2Vec2 GetVertex(int)(System.Int32 index)
Parameters:
index
(System.Int32)Returns:
Box2D.Common.b2Vec2
GetVertexCount()
System.Int32 GetVertexCount()()
Returns:
System.Int32
Example
RayCast(out b2RayCastOutput, b2RayCastInput, ref b2Transform, int)
System.Boolean RayCast(out b2RayCastOutput, b2RayCastInput, ref b2Transform, int)(Box2D.Collision.b2RayCastOutput output, Box2D.Collision.b2RayCastInput input, Box2D.Common.b2Transform transform, System.Int32 childIndex)
Cast a ray against a child shape. @param output the ray-cast results. @param input the ray-cast input parameters. @param transform the transform to be applied to the shape. @param childIndex the child shape index
Parameters:
output
(Box2D.Collision.b2RayCastOutput)input
(Box2D.Collision.b2RayCastInput)transform
(Box2D.Common.b2Transform)childIndex
(System.Int32)Returns:
System.Boolean
Example
TestPoint(ref b2Transform, b2Vec2)
System.Boolean TestPoint(ref b2Transform, b2Vec2)(Box2D.Common.b2Transform transform, Box2D.Common.b2Vec2 p)
Test a point for containment in this shape. This only works for convex shapes. @param xf the shape world transform. @param p a point in world coordinates.
Parameters:
transform
(Box2D.Common.b2Transform)p
(Box2D.Common.b2Vec2)Returns:
System.Boolean
Example