nevrax.org : docs

00001 
00007 /* Copyright, 2000, 2001 Nevrax Ltd.
00008  *
00009  * This file is part of NEVRAX NEL.
00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2, or (at your option)
00013  * any later version.
00014 
00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018  * General Public License for more details.
00019 
00020  * You should have received a copy of the GNU General Public License
00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
00023  * MA 02111-1307, USA.
00024  */
00025 
00026 #include "stdsound.h"
00027 
00028 #include "bounding_sphere.h"
00029 
00030 using namespace NLMISC;
00031 
00032 
00033 namespace NLSOUND {
00034 
00035 
00036 /*
00037  * Constructor
00038  */
00039 /*CBoundingSphere::CBoundingSphere()
00040 {
00041 }*/
00042 
00043 
00044 /*
00045  * Return true if the box includes the specified point
00046  */
00047 bool            CBoundingSphere::include( const NLMISC::CVector& pos ) const
00048 {
00049         return _BSphere.include( pos );
00050 }
00051 
00052 
00053 
00054 /* Return the ratio of a point between this shape and another inner shape.
00055  * The point must be included in this shape (the outer one) and not
00056  * in the inner shape.
00057  * If the point is near this shape, the ratio is near 0.
00058  * If the point is near the inner shape, the ratio is near 1.
00059  */
00060 float           CBoundingSphere::getRatio( const NLMISC::CVector& pos, IBoundingShape *inner ) const
00061 {
00062         return (_BSphere.Radius-(pos-_BSphere.Center).norm()) / (_BSphere.Radius-inner->getRadiusAtIntersect(pos));
00063 }
00064 
00065 
00066 /*
00067  * Set properties (EDIT)
00068  */
00069 void            CBoundingSphere::setProperties( const NLMISC::CVector& center, float radius )
00070 {
00071         _BSphere.Center = center;
00072         _BSphere.Radius = radius;
00073 }
00074 
00075 
00076 } // NLSOUND
bounding_sphere.cpp
