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Tuesday the 22nd of May 2012 @ 01:25am

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LibN2L N2L Home Older News Downloads Documentation (n2l5) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Documentation (libN2L-4) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Bugtracker Project Page Report a Bug Bug List Related Things Life 2130 Devel Game Journal

LibN2L-4 Library Code Reference Classes Compounds Files Members Method Index Full Reference cMatrix.h Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2002 Aaron Cameron This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A copy of the GNU Lesser General Public License has been provided with this library in the file 'COPYING'. Contact information for the author of this library has been provided with this library in the file 'AUTHOR'. ************************************************************************/ #ifndef _n2l4_cMatrix_h #define _n2l4_cMatrix_h #include "n2l/n2l.h" namespace n2l { template <class TComponent, tUint Rows, tUint Cols > class cMatrix { public: typedef cMatrix<TComponent,Rows,Cols> tThisMatrix; typedef TComponent tComponent; enum { NumComps = Rows*Cols }; // Constructors /* ************************************************************ */ cMatrix() : mMatrix( new tComponent[Rows*Cols] ) { } /* ************************************************************ */ cMatrix( const tThisMatrix & iMatrix ) : mMatrix( new tComponent[Rows*Cols] ) { memcpy( (void*)mMatrix, (void*)(iMatrix.mMatrix), sizeof(tComponent)*Rows*Cols ); } /* ************************************************************ */ ~cMatrix() { delete []mMatrix; } /* ************************************************************ */ void setRow( const tUint iRow, const tComponent &i1, const tComponent &i2 = 0, const tComponent &i3 = 0, const tComponent &i4 = 0, const tComponent &i5 = 0, const tComponent &i6 = 0, const tComponent &i7 = 0, const tComponent &i8 = 0, const tComponent &i9 = 0, const tComponent &i10 = 0 ) { switch (Cols) { case 10: at(iRow,9) = i10; case 9: at(iRow,8) = i9; case 8: at(iRow,7) = i8; case 7: at(iRow,6) = i7; case 6: at(iRow,5) = i6; case 5: at(iRow,4) = i5; case 4: at(iRow,3) = i4; case 3: at(iRow,2) = i3; case 2: at(iRow,1) = i2; case 1: at(iRow,0) = i1; break; default: throw cOutOfBoundsException( "cMatrix::setRow", "Too many columns to use this method" ); break; } } /* ************************************************************ */ void setColumn( const tUint iCol, const tComponent &i1, const tComponent &i2 = 0, const tComponent &i3 = 0, const tComponent &i4 = 0, const tComponent &i5 = 0, const tComponent &i6 = 0, const tComponent &i7 = 0, const tComponent &i8 = 0, const tComponent &i9 = 0, const tComponent &i10 = 0 ) { switch (Rows) { case 10: at(9,iCol) = i10; case 9: at(8,iCol) = i9; case 8: at(7,iCol) = i8; case 7: at(6,iCol) = i7; case 6: at(5,iCol) = i6; case 5: at(4,iCol) = i5; case 4: at(3,iCol) = i4; case 3: at(2,iCol) = i3; case 2: at(1,iCol) = i2; case 1: at(0,iCol) = i1; break; default: throw cOutOfBoundsException( "cMatrix::setCol", "Too many rows to use this method" ); break; } } /* ************************************************************ */ void transposed( cMatrix<tComponent, Cols,Rows> &oM ) const { for (tUint r=0; r<Rows; ++r) for (tUint c=0; c<Cols; ++c) oM.at(c,r) = at(r,c); } /* ************************************************************ */ const cMatrix<tComponent, Cols,Rows> transposed() const { cMatrix<tComponent, Cols,Rows> oM; for (tUint r=0; r<Rows; ++r) for (tUint c=0; c<Cols; ++c) oM.at(c,r) = at(r,c); return oM; } /* ************************************************************ */ inline const tUint rows() const { return Rows; }; /* ************************************************************ */ inline const tUint cols() const { return Cols; }; /* ************************************************************ */ tThisMatrix & operator =( const tThisMatrix & iMatrix ) { if (&iMatrix!=this) memcpy( (void*)mMatrix, (void*)(iMatrix.mMatrix), sizeof(tComponent)*Rows*Cols ); return *this; } /* ************************************************************ */ const tBool operator ==( const tThisMatrix &iM ) const { if (iM.rows()!=Rows || iM.cols()!=Cols) return false; for (tUint i=0; i!=NumComps; ++i) if (mMatrix[i]!=iM.mMatrix[i]) return false; return true; } /* ************************************************************ */ const tThisMatrix operator +( const tThisMatrix &iM ) const { if (iM.rows()!=Rows || iM.cols()!=Cols) throw cBadDataUseException( "cMatrix::operator +()", "A and B are of different size" ); tThisMatrix s; s.zero(); for (tUint i=0; i!=NumComps; ++i) s[i] = mMatrix[i]+iM.mMatrix[i]; return s; } /* ************************************************************ */ const tThisMatrix operator *( const tComponent &iComp ) const { tThisMatrix s; s.zero(); for (tUint i=0; i!=NumComps; ++i) s[i] = mMatrix[i]*iComp; return s; } /* ************************************************************ */ inline const tBool operator !=( const tThisMatrix &iM ) const { return !(*this==iM); } /* ************************************************************ */ inline const tComponent &operator []( const tSint iOffset ) const { return mMatrix[iOffset]; } /* ************************************************************ */ inline tComponent &operator []( const tSint iOffset ) { return mMatrix[iOffset]; } /* ************************************************************ */ template <class TRMatrix, class TOMatrix> void multiply( TRMatrix &oC, const TOMatrix &iB ) const { assert( oC.rows() == Rows ); assert( oC.cols() == iB.cols() ); assert( Cols == iB.rows() ); for (tUint cR=0; cR<Rows; ++cR) for (tUint cC=0; cC<iB.cols(); ++cC) { tComponent sum(0); for (tUint aC=0; aC<Cols; ++aC) sum += at(cR,aC) * iB.at(aC,cC); oC.at(cR,cC) = sum; } } /* ************************************************************ */ tComponent & at( const tUint iRow, const tUint iCol ) { return mMatrix[ iCol*Rows+iRow ]; } /* ************************************************************ */ const tComponent & at( const tUint iRow, const tUint iCol ) const { return mMatrix[ iCol*Rows+iRow ]; } /* ************************************************************ */ tComponent * data() { return mMatrix; } /* ************************************************************ */ void identity() { // Clear the matrix memset( (void*)(mMatrix), 0, sizeof(tComponent)*Rows*Cols ); // Set the identity const tUint Num( n2lMin(Rows,Cols) ); for (tUint i=0; i<Num; ++i) at(i,i) = 1; } /* ************************************************************ */ inline void zero() { memset( (void*)(mMatrix), 0, sizeof(tComponent)*NumComps ); } /* ************************************************************ */ const tString dump() { tString temp; for (tUint r=0; r<Rows; ++r) { temp += "["; for (tUint c=0; c<Cols; ++c) { temp += asString(at(r,c)); temp += (c+1==Cols?" ]\n":","); } } return temp; } private: tComponent *mMatrix; }; // class } // namespace n2l #endif

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