Main Page | Modules | Class Hierarchy | Alphabetical List | Class List | File List | Class Members | File Members | Related Pages
plane3.h
Go to the documentation of this file.00001 /* 00002 Copyright (C) 1998,1999,2000 by Jorrit Tyberghein 00003 Largely rewritten by Ivan Avramovic <ivan@avramovic.com> 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Library General Public 00007 License as published by the Free Software Foundation; either 00008 version 2 of the License, or (at your option) any later version. 00009 00010 This library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Library General Public License for more details. 00014 00015 You should have received a copy of the GNU Library General Public 00016 License along with this library; if not, write to the Free 00017 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 */ 00019 00020 #ifndef __CS_PLANE3_H__ 00021 #define __CS_PLANE3_H__ 00022 00029 #include "csextern.h" 00030 #include "csgeom/vector3.h" 00031 00037 class CS_CSGEOM_EXPORT csPlane3 00038 { 00039 public: 00041 csVector3 norm; 00042 00044 float DD; 00045 00049 csPlane3 () : norm(0,0,1), DD(0) {} 00050 00054 csPlane3 (const csVector3& plane_norm, float d=0) : norm(plane_norm), DD(d) {} 00055 00059 csPlane3 (float a, float b, float c, float d=0) : norm(a,b,c), DD(d) {} 00060 00067 csPlane3 (const csVector3& v1, const csVector3& v2, const csVector3& v3); 00068 00074 csPlane3 (const csVector3& v2, const csVector3& v3) 00075 { 00076 norm = v2 % v3; DD = 0; 00077 } 00078 00080 inline csVector3& Normal () { return norm; } 00082 inline const csVector3& Normal () const { return norm; } 00083 00085 inline float A () const { return norm.x; } 00087 inline float B () const { return norm.y; } 00089 inline float C () const { return norm.z; } 00091 inline float D () const { return DD; } 00092 00094 inline float& A () { return norm.x; } 00096 inline float& B () { return norm.y; } 00098 inline float& C () { return norm.z; } 00100 inline float& D () { return DD; } 00101 00103 inline const csVector3& GetNormal () const { return norm; } 00104 00106 inline void Set (float a, float b, float c, float d) 00107 { norm.x = a; norm.y = b; norm.z = c; DD = d; } 00108 00110 inline void Set (const csVector3& normal, float d) 00111 { norm = normal; DD = d; } 00112 00119 void Set (const csVector3& v1, const csVector3& v2, const csVector3& v3); 00120 00126 void Set (const csVector3& v2, const csVector3& v3) 00127 { 00128 norm = v2 % v3; DD = 0; 00129 } 00130 00141 inline float Classify (const csVector3& pt) const { return norm*pt+DD; } 00142 00147 static float Classify (float A, float B, float C, float D, 00148 const csVector3& pt) 00149 { 00150 return A*pt.x + B*pt.y + C*pt.z + D; 00151 } 00152 00159 inline float Distance (const csVector3& pt) const 00160 { return ABS (Classify (pt)); } 00161 00166 void Invert () { norm = -norm; DD = -DD; } 00167 00171 void Normalize () 00172 { 00173 float f = norm.Norm (); 00174 if (f) { norm /= f; DD /= f; } 00175 } 00176 00180 csVector3 FindPoint () const; 00181 00192 bool ClipPolygon (csVector3*& pverts, int& num_verts, bool reversed = false); 00193 }; 00194 00197 #endif // __CS_PLANE3_H__ 00198
Generated for Crystal Space by doxygen 1.3.9.1