fox-toolkit.org - Documentation

00001 /********************************************************************************
00002 *                                                                               *
00003 *            S i n g l e - P r e c i s i o n   3 x 3   M a t r i x              *
00004 *                                                                               *
00005 *********************************************************************************
00006 * Copyright (C) 2003,2004 by Jeroen van der Zijp.   All Rights Reserved.        *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or                 *
00009 * modify it under the terms of the GNU Lesser General Public                    *
00010 * License as published by the Free Software Foundation; either                  *
00011 * version 2.1 of the License, or (at your option) any later version.            *
00012 *                                                                               *
00013 * This library is distributed in the hope that it will be useful,               *
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of                *
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU             *
00016 * Lesser General Public License for more details.                               *
00017 *                                                                               *
00018 * You should have received a copy of the GNU Lesser General Public              *
00019 * License along with this library; if not, write to the Free Software           *
00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.    *
00021 *********************************************************************************
00022 * $Id: FXMat3f.h,v 1.5 2004/02/08 17:17:33 fox Exp $                            *
00023 ********************************************************************************/
00024 #ifndef FXMAT3F_H
00025 #define FXMAT3F_H
00026 
00027 
00028 namespace FX {
00029 
00030 
00031 /// Single-precision 3x3 matrix
00032 class FXAPI FXMat3f {
00033 protected:
00034   FXVec3f m[3];
00035 public:
00036   /// Constructors
00037   FXMat3f(){}
00038   FXMat3f(FXfloat w);
00039   FXMat3f(FXfloat a00,FXfloat a01,FXfloat a02,
00040           FXfloat a10,FXfloat a11,FXfloat a12,
00041           FXfloat a20,FXfloat a21,FXfloat a22);
00042   FXMat3f(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c);
00043   FXMat3f(const FXMat3f& other);
00044 
00045   /// Assignment operators
00046   FXMat3f& operator=(const FXMat3f& other);
00047   FXMat3f& operator=(FXfloat w);
00048   FXMat3f& operator+=(const FXMat3f& w);
00049   FXMat3f& operator-=(const FXMat3f& w);
00050   FXMat3f& operator*=(FXfloat w);
00051   FXMat3f& operator*=(const FXMat3f& w);
00052   FXMat3f& operator/=(FXfloat w);
00053 
00054   /// Indexing
00055   FXVec3f& operator[](FXint i){return m[i];}
00056   const FXVec3f& operator[](FXint i) const {return m[i];}
00057 
00058   /// Conversion
00059   operator FXfloat*(){return m[0];}
00060   operator const FXfloat*() const {return m[0];}
00061 
00062   /// Other operators
00063   friend FXAPI FXMat3f operator+(const FXMat3f& a,const FXMat3f& b);
00064   friend FXAPI FXMat3f operator-(const FXMat3f& a,const FXMat3f& b);
00065   friend FXAPI FXMat3f operator-(const FXMat3f& a);
00066   friend FXAPI FXMat3f operator*(const FXMat3f& a,const FXMat3f& b);
00067   friend FXAPI FXMat3f operator*(FXfloat x,const FXMat3f& a);
00068   friend FXAPI FXMat3f operator*(const FXMat3f& a,FXfloat x);
00069   friend FXAPI FXMat3f operator/(const FXMat3f& a,FXfloat x);
00070   friend FXAPI FXMat3f operator/(FXfloat x,const FXMat3f& a);
00071 
00072   /// Multiply matrix and vector
00073   friend FXAPI FXVec3f operator*(const FXVec3f& v,const FXMat3f& m);
00074   friend FXAPI FXVec3f operator*(const FXMat3f& a,const FXVec3f& v);
00075 
00076   /// Mutiply matrix and vector, for non-projective matrix
00077   friend FXAPI FXVec2f operator*(const FXVec2f& v,const FXMat3f& m);
00078   friend FXAPI FXVec2f operator*(const FXMat3f& a,const FXVec2f& v);
00079 
00080   /// Set identity matrix
00081   FXMat3f& eye();
00082 
00083   /// Multiply by rotation of phi
00084   FXMat3f& rot(FXfloat c,FXfloat s);
00085   FXMat3f& rot(FXfloat phi);
00086 
00087   /// Multiply by translation
00088   FXMat3f& trans(FXfloat tx,FXfloat ty);
00089 
00090   /// Multiply by scaling
00091   FXMat3f& scale(FXfloat sx,FXfloat sy);
00092   FXMat3f& scale(FXfloat s);
00093 
00094   /// Determinant
00095   friend FXAPI FXfloat det(const FXMat3f& m);
00096 
00097   /// Transpose
00098   friend FXAPI FXMat3f transpose(const FXMat3f& m);
00099 
00100   /// Invert
00101   friend FXAPI FXMat3f invert(const FXMat3f& m);
00102 
00103   /// Save to a stream
00104   friend FXAPI FXStream& operator<<(FXStream& store,const FXMat3f& m);
00105 
00106   /// Load from a stream
00107   friend FXAPI FXStream& operator>>(FXStream& store,FXMat3f& m);
00108   };
00109 
00110 }
00111 
00112 #endif