Sphere2 Struct Reference

A sphere class in 2D. More...

Inheritance diagram for Sphere2:

List of all members.

Public Member Functions
	Sphere2 (Vector2 center, float radius)
	Sphere2 constructor.
bool	IsInside (Vector2 point)
	Return true if 'point' is inside the primitive (in its negative space).
void	ClosestSurfacePoint (Vector2 point, out Vector2 ret, out float sign)
	Return the closest point to 'point' that lies on the surface of the primitive.
float	SignedDistance (Vector2 point)
	Return the signed distance (penetration distance) from 'point' to the surface of the primitive.
bool	NegativeClipSegment (ref Vector2 A, ref Vector2 B)
	Assuming the primitive is convex, clip the segment AB against the primitive.
Public Attributes
Vector2	Center
	Sphere center.
float	Radius
	Sphere radius.

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Detailed Description

A sphere class in 2D.

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Member Function Documentation

void ClosestSurfacePoint	(	Vector2	point,
		out Vector2	ret,
		out float	sign
	)

Return the closest point to 'point' that lies on the surface of the primitive.

If that point is inside the primitive, sign is negative.

Implements ICollisionBasics.

bool NegativeClipSegment	(	ref Vector2	A,
		ref Vector2	B
	)

Assuming the primitive is convex, clip the segment AB against the primitive.

Return false if AB is entirely in positive halfspace, else clip against negative space and return true.

Implements ICollisionBasics.