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lsimpleMatrix.h
00001 // Filename: lsimpleMatrix.h
00002 // Created by:  drose (15Dec11)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef LSIMPLEMATRIX_H
00016 #define LSIMPLEMATRIX_H
00017 
00018 #include "pandabase.h"
00019 
00020 #ifdef HAVE_EIGEN
00021 #include <Eigen/Dense>
00022 #endif
00023 
00024 ////////////////////////////////////////////////////////////////////
00025 //       Class : LSimpleMatrix
00026 // Description : This class provides an underlying storage of the
00027 //               various linear-algebra classes (e.g. LVecBase3,
00028 //               LMatrix4) in the absence of the Eigen linear algebra
00029 //               library.
00030 ////////////////////////////////////////////////////////////////////
00031 template <class FloatType, int NumRows, int NumCols>
00032 class LSimpleMatrix {
00033 public:
00034   INLINE LSimpleMatrix();
00035   INLINE LSimpleMatrix(const LSimpleMatrix<FloatType, NumRows, NumCols> &copy);
00036   INLINE void operator = (const LSimpleMatrix<FloatType, NumRows, NumCols> &copy);
00037   INLINE const FloatType &operator () (int row, int col) const;
00038   INLINE FloatType &operator () (int row, int col);
00039   INLINE const FloatType &operator () (int col) const;
00040   INLINE FloatType &operator () (int col);
00041 
00042 private:
00043   FloatType _array[NumRows][NumCols];
00044 };
00045 
00046 #include "lsimpleMatrix.I"
00047 
00048 // Now, do we actually use LSimpleMatrix, or do we use Eigen::Matrix?
00049 #ifdef HAVE_EIGEN
00050 #define UNALIGNED_LINMATH_MATRIX(FloatType, NumRows, NumCols) Eigen::Matrix<FloatType, NumRows, NumCols, Eigen::DontAlign | Eigen::RowMajor>
00051 
00052 #ifdef LINMATH_ALIGN
00053 #define LINMATH_MATRIX(FloatType, NumRows, NumCols) Eigen::Matrix<FloatType, NumRows, NumCols, Eigen::RowMajor>
00054 #else  // LINMATH_ALIGN
00055 #define LINMATH_MATRIX(FloatType, NumRows, NumCols) UNALIGNED_LINMATH_MATRIX(FloatType, NumRows, NumCols) 
00056 #endif  // LINMATH_ALIGN
00057 
00058 #else  // HAVE_EIGEN
00059 #define UNALIGNED_LINMATH_MATRIX(FloatType, NumRows, NumCols) LSimpleMatrix<FloatType, NumRows, NumCols>
00060 #define LINMATH_MATRIX(FloatType, NumRows, NumCols) UNALIGNED_LINMATH_MATRIX(FloatType, NumRows, NumCols) 
00061 #endif  // HAVE_EIGEN
00062 
00063 // This is as good a place as any to define this alignment macro.
00064 #ifdef LINMATH_ALIGN
00065 #define ALIGN_LINMATH ALIGN_16BYTE
00066 #else
00067 #define ALIGN_LINMATH 
00068 #endif  // LINMATH_ALIGN
00069 
00070 #endif
00071 
00072   
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