Class CircleShape

java.lang.Object
org.jbox2d.collision.shapes.Shape
org.jbox2d.collision.shapes.CircleShape
public class CircleShape extends Shape
A circle shape.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    final Vec2
    m_p
     

    Fields inherited from class Shape

    m_radius, m_type

  • Constructor Summary

    Constructors
    Constructor
    Description
    CircleShape()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    final Shape
    clone()
     
    final void
    computeAABB(AABB aabb, Transform transform, int childIndex)
    Given a transform, compute the associated axis aligned bounding box for a child shape.
    final void
    computeMass(MassData massData, float density)
    Compute the mass properties of this shape using its dimensions and density.
    final int
    getChildCount()
    Get the number of child primitives
    final int
    getSupport(Vec2 d)
    Get the supporting vertex index in the given direction.
    final Vec2
    getSupportVertex(Vec2 d)
    Get the supporting vertex in the given direction.
    final Vec2
    getVertex(int index)
    Get a vertex by index.
    final int
    getVertexCount()
    Get the vertex count.
    final boolean
    raycast(RayCastOutput output, RayCastInput input, Transform transform, int childIndex)
    Cast a ray against a child shape.
    final boolean
    testPoint(Transform transform, Vec2 p)
    Test a point for containment in this shape.

    Methods inherited from class Shape

    getRadius, getType, setRadius

    Methods inherited from class java.lang.Object

    equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • m_p

      public final Vec2 m_p

  • Constructor Details

    • CircleShape

      public CircleShape()

  • Method Details

    • clone

      public final Shape clone()
      Specified by:
      clone in class Shape

    • getChildCount

      public final int getChildCount()
      Description copied from class: Shape
      Get the number of child primitives
      Specified by:
      getChildCount in class Shape
      Returns:

    • getSupport

      public final int getSupport(Vec2 d)
      Get the supporting vertex index in the given direction.
      Parameters:
      d -
      Returns:

    • getSupportVertex

      public final Vec2 getSupportVertex(Vec2 d)
      Get the supporting vertex in the given direction.
      Parameters:
      d -
      Returns:

    • getVertexCount

      public final int getVertexCount()
      Get the vertex count.
      Returns:

    • getVertex

      public final Vec2 getVertex(int index)
      Get a vertex by index.
      Parameters:
      index -
      Returns:

    • testPoint

      public final boolean testPoint(Transform transform, Vec2 p)
      Description copied from class: Shape
      Test a point for containment in this shape. This only works for convex shapes.
      Specified by:
      testPoint in class Shape
      Parameters:
      transform - the shape world transform.
      p - a point in world coordinates.

    • raycast

      public final boolean raycast(RayCastOutput output, RayCastInput input, Transform transform, int childIndex)
      Description copied from class: Shape
      Cast a ray against a child shape.
      Specified by:
      raycast in class Shape
      Returns:
      if hit

    • computeAABB

      public final void computeAABB(AABB aabb, Transform transform, int childIndex)
      Description copied from class: Shape
      Given a transform, compute the associated axis aligned bounding box for a child shape.
      Specified by:
      computeAABB in class Shape

    • computeMass

      public final void computeMass(MassData massData, float density)
      Description copied from class: Shape
      Compute the mass properties of this shape using its dimensions and density. The inertia tensor is computed about the local origin.
      Specified by:
      computeMass in class Shape
      Parameters:
      massData - returns the mass data for this shape.
      density - the density in kilograms per meter squared.