CrystalSpace

Public API Reference

csgeom/sphere.h

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00001 /*
00002     Copyright (C) 2001 by Jorrit Tyberghein
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_SPHERE_H__
00020 #define __CS_SPHERE_H__
00021 
00029 #include "csextern.h"
00030 
00031 #include "cstypes.h"
00032 #include "csgeom/math3d.h"
00033 #include "csgeom/vector3.h"
00034 
00035 class csTransform;
00036 
00040 class CS_CRYSTALSPACE_EXPORT csSphere
00041 {
00042 private:
00043   csVector3 center;
00044   float radius;
00045 
00046 public:
00048   csSphere ()
00049   {
00050     center.Set (0, 0, 0);
00051     radius = 0;
00052   }
00053 
00055   csSphere (const csVector3& center, float radius)
00056   {
00057     csSphere::center = center;
00058     csSphere::radius = radius;
00059   }
00060 
00062   csSphere (const csSphere& s) { center = s.center; radius = s.radius; }
00063 
00065   inline csVector3& GetCenter () { return center; }
00067   inline const csVector3& GetCenter () const { return center; }
00069   inline void SetCenter (const csVector3& c) { center = c; }
00071   inline float GetRadius () const { return radius; }
00073   inline void SetRadius (float r) { radius = r; }
00074 
00076   void Union (const csVector3& ocenter, float oradius);
00077 
00079   friend csSphere operator+ (const csSphere& s1, const csSphere& s2);
00081   csSphere& operator+= (const csSphere& s)
00082   {
00083     Union (s.center, s.radius);
00084     return *this;
00085   }
00086   
00088   bool TestIntersect (const csSphere& sphere) const
00089   {
00090     float sqDist = csSquaredDist::PointPoint (center, sphere.center);
00091     return (sqDist - (csSquare (radius + sphere.radius))) < 0;
00092   }
00093 };
00094 
00098 class CS_CRYSTALSPACE_EXPORT csEllipsoid
00099 {
00100 private:
00101   csVector3 center;
00102   csVector3 radius;
00103 
00104 public:
00106   csEllipsoid ()
00107   {
00108     center.Set (0, 0, 0);
00109     radius.Set (0, 0, 0);
00110   }
00111 
00113   csEllipsoid (const csVector3& center, const csVector3& radius)
00114   {
00115     csEllipsoid::center = center;
00116     csEllipsoid::radius = radius;
00117   }
00118 
00120   csEllipsoid (const csEllipsoid& s) { center = s.center; radius = s.radius; }
00121 
00123   inline csVector3& GetCenter () { return center; }
00125   inline const csVector3& GetCenter () const { return center; }
00127   inline void SetCenter (const csVector3& c) { center = c; }
00129   inline csVector3& GetRadius () { return radius; }
00131   inline const csVector3& GetRadius () const { return radius; }
00133   inline void SetRadius (const csVector3& r) { radius = r; }
00134 };
00135 
00138 #endif // __CS_SPHERE_H__
00139 

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