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FXMat3f.h

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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) 2003,2006 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 1.13 2006/01/22 17:58:05 fox Exp $                           *
00023 ********************************************************************************/
00024 #ifndef FXMAT3F_H
00025 #define FXMAT3F_H
00026 
00027 
00028 namespace FX {
00029 
00030 
00031 class FXQuatf;
00032 
00033 
00034 /// Single-precision 3x3 matrix
00035 class FXAPI FXMat3f {
00036 protected:
00037   FXVec3f m[3];
00038 public:
00039 
00040   /// Default constructor
00041   FXMat3f(){}
00042 
00043   /// Initialize matrix from another matrix
00044   FXMat3f(const FXMat3f& other);
00045 
00046   /// Initialize matrix from scalar
00047   FXMat3f(FXfloat w);
00048 
00049   /// Initialize matrix from components
00050   FXMat3f(FXfloat a00,FXfloat a01,FXfloat a02,
00051           FXfloat a10,FXfloat a11,FXfloat a12,
00052           FXfloat a20,FXfloat a21,FXfloat a22);
00053 
00054   /// Initialize matrix from three vectors
00055   FXMat3f(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c);
00056 
00057   /// Initialize matrix from quaternion
00058   FXMat3f(const FXQuatf& quat);
00059 
00060   /// Assignment
00061   FXMat3f& operator=(const FXMat3f& other);
00062   FXMat3f& operator=(FXfloat w);
00063 
00064   /// Set value from another matrix
00065   FXMat3f& set(const FXMat3f& other);
00066 
00067   /// Set value from scalar
00068   FXMat3f& set(FXfloat w);
00069 
00070   /// Set value from components
00071   FXMat3f& set(FXfloat a00,FXfloat a01,FXfloat a02,
00072                FXfloat a10,FXfloat a11,FXfloat a12,
00073                FXfloat a20,FXfloat a21,FXfloat a22);
00074 
00075   /// Set value from three vectors
00076   FXMat3f& set(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c);
00077 
00078   /// Set value from quaternion
00079   FXMat3f& set(const FXQuatf& quat);
00080 
00081   /// Assignment operators
00082   FXMat3f& operator+=(const FXMat3f& w);
00083   FXMat3f& operator-=(const FXMat3f& w);
00084   FXMat3f& operator*=(FXfloat w);
00085   FXMat3f& operator*=(const FXMat3f& w);
00086   FXMat3f& operator/=(FXfloat w);
00087 
00088   /// Indexing
00089   FXVec3f& operator[](FXint i){return m[i];}
00090   const FXVec3f& operator[](FXint i) const {return m[i];}
00091 
00092   /// Conversion
00093   operator FXfloat*(){return m[0];}
00094   operator const FXfloat*() const {return m[0];}
00095 
00096   /// Unary minus
00097   FXMat3f operator-() const;
00098 
00099   /// Matrix and matrix
00100   FXMat3f operator+(const FXMat3f& w) const;
00101   FXMat3f operator-(const FXMat3f& w) const;
00102   FXMat3f operator*(const FXMat3f& w) const;
00103 
00104   /// Multiply matrix and vector
00105   FXVec3f operator*(const FXVec3f& v) const;
00106   FXVec2f operator*(const FXVec2f& v) const;
00107 
00108   /// Matrix and scalar
00109   friend FXAPI FXMat3f operator*(FXfloat x,const FXMat3f& a);
00110   friend FXAPI FXMat3f operator*(const FXMat3f& a,FXfloat x);
00111   friend FXAPI FXMat3f operator/(const FXMat3f& a,FXfloat x);
00112   friend FXAPI FXMat3f operator/(FXfloat x,const FXMat3f& a);
00113 
00114   /// Set identity matrix
00115   FXMat3f& eye();
00116 
00117   /// Multiply by rotation of phi
00118   FXMat3f& rot(FXfloat c,FXfloat s);
00119   FXMat3f& rot(FXfloat phi);
00120 
00121   /// Multiply by translation
00122   FXMat3f& trans(FXfloat tx,FXfloat ty);
00123 
00124   /// Multiply by scaling
00125   FXMat3f& scale(FXfloat sx,FXfloat sy);
00126   FXMat3f& scale(FXfloat s);
00127 
00128   /// Determinant
00129   FXfloat det() const;
00130 
00131   /// Transpose
00132   FXMat3f transpose() const;
00133 
00134   /// Invert
00135   FXMat3f invert() const;
00136 
00137   /// Save to a stream
00138   friend FXAPI FXStream& operator<<(FXStream& store,const FXMat3f& m);
00139 
00140   /// Load from a stream
00141   friend FXAPI FXStream& operator>>(FXStream& store,FXMat3f& m);
00142   };
00143 
00144 extern FXAPI FXMat3f operator*(FXfloat x,const FXMat3f& a);
00145 extern FXAPI FXMat3f operator*(const FXMat3f& a,FXfloat x);
00146 extern FXAPI FXMat3f operator/(const FXMat3f& a,FXfloat x);
00147 extern FXAPI FXMat3f operator/(FXfloat x,const FXMat3f& a);
00148 
00149 extern FXAPI FXStream& operator<<(FXStream& store,const FXMat3f& m);
00150 extern FXAPI FXStream& operator>>(FXStream& store,FXMat3f& m);
00151 
00152 }
00153 
00154 #endif

Copyright © 1997-2005 Jeroen van der Zijp