DistancePointToSphere Struct Reference
[XEngineMath Library]

List of all members.

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Detailed Description

Returns the distance of the given point to the given sphere. The sphere is treated as being hollow.

	Let |X - C|^2 = r^2 be the sphere and P the point. The distance between 
	the point P and the hollow sphere is abs(|P - C| - r).
	Let D = (P - C) / |P - C|, then the closest point on the sphere to P is
		Q = C + r * D
	If P = C, then the closest point on the hollow sphere to P is any point
	of the sphere, for example C + r * (1, 0, 0).
	

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The documentation for this struct was generated from the following files:

• XDistanceAlgorithms.h
• XDistanceAlgorithms.cpp

 

Created with doxygen on: Thu Jan 6 14:12:15 2005 Copyright © by Martin Ecker