1 /******************************************************************************** 2 * * 3 * D o u b l e - P r e c i s i o n S p h e r e C l a s s * 4 * * 5 ********************************************************************************* 6 * Copyright (C) 2004,2006 by Jeroen van der Zijp. All Rights Reserved. * 7 ********************************************************************************* 8 * This library is free software; you can redistribute it and/or * 9 * modify it under the terms of the GNU Lesser General Public * 10 * License as published by the Free Software Foundation; either * 11 * version 2.1 of the License, or (at your option) any later version. * 12 * * 13 * This library is distributed in the hope that it will be useful, * 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 16 * Lesser General Public License for more details. * 17 * * 18 * You should have received a copy of the GNU Lesser General Public * 19 * License along with this library; if not, write to the Free Software * 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * 21 ********************************************************************************* 22 * $Id: FXSphered.h,v 1.17 2006/01/22 17:58:09 fox Exp $ * 23 ********************************************************************************/ 24 #ifndef FXSPHERED_H 25 #define FXSPHERED_H 26 27 28 namespace FX { 29 30 31 class FXRanged; 32 33 34 /// Spherical bounds 35 class FXAPI FXSphered { 36 public: 37 FXVec3d center; 38 FXdouble radius; 39 public: 40 41 /// Default constructor FXSphered()42 FXSphered(){} 43 44 /// Copy constructor FXSphered(const FXSphered & sphere)45 FXSphered(const FXSphered& sphere):center(sphere.center),radius(sphere.radius){} 46 47 /// Initialize from center and radius center(cen)48 FXSphered(const FXVec3d& cen,FXdouble rad=0.0):center(cen),radius(rad){} 49 50 /// Initialize from center and radius center(x,y,z)51 FXSphered(FXdouble x,FXdouble y,FXdouble z,FXdouble rad=0.0):center(x,y,z),radius(rad){} 52 53 /// Initialize sphere to fully contain the given bounding box 54 FXSphered(const FXRanged& bounds); 55 56 /// Assignment 57 FXSphered& operator=(const FXSphered& sphere){ center=sphere.center; radius=sphere.radius; return *this; } 58 59 /// Set value from another sphere set(const FXSphered & sphere)60 FXSphered& set(const FXSphered& sphere){ center=sphere.center; radius=sphere.radius; return *this; } 61 62 /// Set value from center and radius set(const FXVec3d & cen,FXdouble rad)63 FXSphered& set(const FXVec3d& cen,FXdouble rad){ center=cen; radius=rad; return *this; } 64 65 /// Set value from center and radius set(FXdouble x,FXdouble y,FXdouble z,FXdouble rad)66 FXSphered& set(FXdouble x,FXdouble y,FXdouble z,FXdouble rad){ center.set(x,y,z); radius=rad; return *this; } 67 68 /// Comparison 69 bool operator==(const FXSphered& s) const { return center==s.center && radius==s.radius;} 70 bool operator!=(const FXSphered& s) const { return center!=s.center || radius!=s.radius;} 71 72 /// Diameter of sphere diameter()73 FXdouble diameter() const { return radius*2.0; } 74 75 /// Test if empty empty()76 bool empty() const { return radius<0.0; } 77 78 /// Test if sphere contains point x,y,z 79 bool contains(FXdouble x,FXdouble y,FXdouble z) const; 80 81 /// Test if sphere contains point p 82 bool contains(const FXVec3d& p) const; 83 84 /// Test if sphere contains another box 85 bool contains(const FXRanged& box) const; 86 87 /// Test if sphere contains another sphere 88 bool contains(const FXSphered& sphere) const; 89 90 /// Include point 91 FXSphered& include(FXdouble x,FXdouble y,FXdouble z); 92 93 /// Include point 94 FXSphered& include(const FXVec3d& p); 95 96 /// Expand radius to include point 97 FXSphered& includeInRadius(FXdouble x,FXdouble y,FXdouble z); 98 99 /// Expand radius to include point 100 FXSphered& includeInRadius(const FXVec3d& p); 101 102 /// Include given range into this one 103 FXSphered& include(const FXRanged& box); 104 105 /// Expand radius to include box 106 FXSphered& includeInRadius(const FXRanged& box); 107 108 /// Include given sphere into this one 109 FXSphered& include(const FXSphered& sphere); 110 111 /// Expand radius to include sphere 112 FXSphered& includeInRadius(const FXSphered& sphere); 113 114 /// Intersect sphere with normalized plane ax+by+cz+w; returns -1,0,+1 115 FXint intersect(const FXVec4d& plane) const; 116 117 /// Intersect sphere with ray u-v 118 bool intersect(const FXVec3d& u,const FXVec3d& v) const; 119 120 /// Test if box overlaps with sphere 121 friend FXAPI bool overlap(const FXRanged& a,const FXSphered& b); 122 123 /// Test if sphere overlaps with box 124 friend FXAPI bool overlap(const FXSphered& a,const FXRanged& b); 125 126 /// Test if spheres overlap 127 friend FXAPI bool overlap(const FXSphered& a,const FXSphered& b); 128 129 /// Save object to a stream 130 friend FXAPI FXStream& operator<<(FXStream& store,const FXSphered& sphere); 131 132 /// Load object from a stream 133 friend FXAPI FXStream& operator>>(FXStream& store,FXSphered& sphere); 134 }; 135 136 137 extern FXAPI bool overlap(const FXRanged& a,const FXSphered& b); 138 extern FXAPI bool overlap(const FXSphered& a,const FXRanged& b); 139 extern FXAPI bool overlap(const FXSphered& a,const FXSphered& b); 140 141 extern FXAPI FXStream& operator<<(FXStream& store,const FXSphered& sphere); 142 extern FXAPI FXStream& operator>>(FXStream& store,FXSphered& sphere); 143 144 } 145 146 #endif 147