b2PolygonShape
b2PolygonShape
Box2D.Collision.ShapesInheritance: System.Object → Box2D.Collision.Shapes.b2Shape
Constructors
b2PolygonShape()
b2PolygonShape()()
b2PolygonShape(b2PolygonShape)
b2PolygonShape(b2PolygonShape)(Box2D.Collision.Shapes.b2PolygonShape copy)
Parameters:
copy
(Box2D.Collision.Shapes.b2PolygonShape)Fields
Properties
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 xf, 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)xf
(Box2D.Common.b2Transform)childIndex
(System.Int32)Example
ComputeCentroid(b2Vec2[], int)
Box2D.Common.b2Vec2 ComputeCentroid(b2Vec2[], int)(Box2D.Common.b2Vec2[] vs, System.Int32 count)
Parameters:
vs
(Box2D.Common.b2Vec2[])count
(System.Int32)Returns:
Box2D.Common.b2Vec2
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()()
Get the number of child primitives.
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 xf, 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)xf
(Box2D.Common.b2Transform)childIndex
(System.Int32)Returns:
System.Boolean
Example
Set(b2Vec2[], int)
Set(b2Vec2[], int)(Box2D.Common.b2Vec2[] vertices, System.Int32 count)
Parameters:
vertices
(Box2D.Common.b2Vec2[])count
(System.Int32)SetAsBox(float, float)
SetAsBox(float, float)(System.Single hx, System.Single hy)
Parameters:
hx
(System.Single)hy
(System.Single)SetAsBox(float, float, b2Vec2, float)
SetAsBox(float, float, b2Vec2, float)(System.Single hx, System.Single hy, Box2D.Common.b2Vec2 center, System.Single angle)
Parameters:
hx
(System.Single)hy
(System.Single)center
(Box2D.Common.b2Vec2)angle
(System.Single)TestPoint(ref b2Transform, b2Vec2)
System.Boolean TestPoint(ref b2Transform, b2Vec2)(Box2D.Common.b2Transform xf, 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:
xf
(Box2D.Common.b2Transform)p
(Box2D.Common.b2Vec2)Returns:
System.Boolean
Example