chrono::ChMatrixNM< Real, preall_rows, preall_columns > Class Template Reference

Description

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
class chrono::ChMatrixNM< Real, preall_rows, preall_columns >

ChMatrixNM.

Specialized matrix class having a pre-allocated NxM buffer of elements on stack. This means that elements are put the stack when the matrix is created, and this can be more efficient than heap allocation (but, please, do not use too large N or M sizes, this is meant to work up to 10x10, for example; prefer ChMatrixDyamic for larger). The NxM size must be known 'statically', at compile-time; however later at run-time this matrix can be resized anyway (but for larger size than NxM, it falls back to heap allocation). Note that if resizing is often required, it may be better to create a ChMatrixDyamic instead, from the beginning.

#include <ChMatrixNM.h>

Inheritance diagram for chrono::ChMatrixNM< Real, preall_rows, preall_columns >:
Collaboration diagram for chrono::ChMatrixNM< Real, preall_rows, preall_columns >:

Public Member Functions

 ChMatrixNM ()
 The default constructor builds a NxN matrix.
 
 ChMatrixNM (const ChMatrixNM< Real, preall_rows, preall_columns > &msource)
 Copy constructor.
 
template<class RealB >
 ChMatrixNM (const ChMatrix< RealB > &msource)
 Copy constructor from all types of base matrices (only with same size)
 
virtual ~ChMatrixNM ()
 Destructor.
 
ChMatrixNM< Real, preall_rows,
preall_columns > & 
operator= (const ChMatrix< Real > &matbis)
 Assignment operator (from generic other matrix, acceptable only if other matrix has same size)
 
ChMatrixNM< Real, preall_rows,
preall_columns > 
operator- () const
 Negates sign of the matrix. More...
 
template<class RealB >
ChMatrixNM< Real, preall_rows,
preall_columns > 
operator+ (const ChMatrix< RealB > &matbis) const
 Sums this matrix and another matrix (of same size) Performance warning: a new object is created. More...
 
template<class RealB >
ChMatrixNM< Real, preall_rows,
preall_columns > 
operator- (const ChMatrix< RealB > &matbis) const
 Subtracts this matrix and another matrix (of same size). More...
 
template<class RealB , int B_rows, int B_columns>
ChMatrixNM< Real, preall_rows,
B_columns > 
operator* (const ChMatrixNM< RealB, preall_columns, B_columns > &matbis) const
 Multiplies this matrix and another ChMatrixNM matrix. More...
 
template<class RealB >
ChMatrixDynamic< Real > operator* (const ChMatrix< RealB > &matbis) const
 Multiplies this matrix and another generic matrix. More...
 
ChMatrixNM< Real, preall_rows,
preall_columns > 
operator* (const Real factor) const
 Multiplies this matrix by a scalar value Performance warning: a new object is created. More...
 
virtual void Resize (int nrows, int ncols)
 Resize for this matrix is NOT SUPPORTED ! DO NOTHING!
 
- Public Member Functions inherited from chrono::ChMatrix< Real >
Real & operator() (const int row, const int col)
 Parenthesis () operator, to access a single element of the matrix, by supplying the row and the column (indexes start from 0). More...
 
const Real & operator() (const int row, const int col) const
 
Real & operator() (const int el)
 Parenthesis () operator, to access a single element of the matrix, by supplying the ordinal of the element (indexes start from 0). More...
 
const Real & operator() (const int el) const
 
Real * operator[] (const int row)
 The [] operator returns the address of the n-th row. More...
 
const Real * operator[] (const int row) const
 
ChMatrix< Real > & operator*= (const Real factor)
 Multiplies this matrix by a factor, in place.
 
template<class RealB >
ChMatrix< Real > & operator+= (const ChMatrix< RealB > &matbis)
 Increments this matrix by another matrix, in place.
 
template<class RealB >
ChMatrix< Real > & operator-= (const ChMatrix< RealB > &matbis)
 Decrements this matrix by another matrix, in place.
 
bool operator== (const ChMatrix< Real > &other)
 Matrices are equal?
 
bool operator!= (const ChMatrix< Real > &other)
 Matrices are not equal?
 
ChMatrix< Real > & operator= (const ChMatrix< Real > &matbis)
 Assignment operator.
 
template<class RealB >
ChMatrix< Real > & operator= (const ChMatrix< RealB > &matbis)
 
void SetElement (int row, int col, Real elem)
 Sets the element at row,col position. Indexes start with zero.
 
Real GetElement (int row, int col)
 Gets the element at row,col position. More...
 
Real GetElement (int row, int col) const
 
void SetElementN (int index, Real elem)
 Sets the Nth element, counting row after row.
 
Real GetElementN (int index)
 Gets the Nth element, counting row after row.
 
const Real GetElementN (int index) const
 
Real & Element (int row, int col)
 Access a single element of the matrix, by supplying the row and the column (indexes start from 0). More...
 
const Real & Element (int row, int col) const
 
Real & ElementN (int index)
 Access a single element of the matrix, the Nth element, counting row after row. More...
 
const Real & ElementN (int index) const
 
Real * GetAddress ()
 Access directly the "Real* address" buffer. More...
 
const Real * GetAddress () const
 
int GetRows () const
 Gets the number of rows.
 
int GetColumns () const
 Gets the number of columns.
 
void SwapColumns (int a, int b)
 Swaps the columns a and b.
 
void SwapRows (int a, int b)
 Swap the rows a and b.
 
void FillDiag (Real sample)
 Fill the diagonal elements, given a sample. More...
 
void FillElem (Real sample)
 Fill the matrix with the same value in all elements.
 
void FillRandom (Real max, Real min)
 Fill the matrix with random float numbers, falling within the "max"/"min" range. More...
 
void Reset ()
 Resets the matrix to zero (warning: simply sets memory to 0 bytes!)
 
void Reset (int nrows, int ncols)
 Reset to zeroes and (if needed) changes the size to have row and col.
 
void SetIdentity ()
 Reset to identity matrix (ones on diagonal, zero elsewhere)
 
template<class RealB >
void CopyFromMatrix (const ChMatrix< RealB > &matra)
 Copy a matrix "matra" into this matrix. More...
 
template<class RealB >
void CopyFromMatrixT (const ChMatrix< RealB > &matra)
 Copy the transpose of matrix "matra" into this matrix. More...
 
template<class RealB >
void CopyTUpMatrix (const ChMatrix< RealB > &matra)
 Copy the transposed upper triangular part of "matra" in the lower triangular part of this matrix. More...
 
template<class RealB >
void CopyTLwMatrix (const ChMatrix< RealB > &matra)
 Copy the transposed lower triangulat part of "matra" in the upper triangular part of this matrix. More...
 
virtual void ArchiveOUT (ChArchiveOut &marchive)
 Method to allow serialization of transient data in archives.
 
virtual void ArchiveIN (ChArchiveIn &marchive)
 Method to allow de serialization of transient data from archives.
 
void StreamOUT (ChStreamOutAscii &mstream)
 Method to allow serializing transient data into in ascii as a readable item, for example "chrono::GetLog() << myobject;" ***OBSOLETE***.
 
void StreamOUTdenseMatlabFormat (ChStreamOutAscii &mstream)
 Method to allow serializing transient data into an ascii stream (ex. More...
 
void MatrNeg ()
 Changes the sign of all the elements of this matrix, in place.
 
template<class RealB , class RealC >
void MatrAdd (const ChMatrix< RealB > &matra, const ChMatrix< RealC > &matrb)
 Sum two matrices, and stores the result in "this" matrix: [this]=[A]+[B].
 
template<class RealB , class RealC >
void MatrSub (const ChMatrix< RealB > &matra, const ChMatrix< RealC > &matrb)
 Subtract two matrices, and stores the result in "this" matrix: [this]=[A]-[B].
 
template<class RealB >
void MatrInc (const ChMatrix< RealB > &matra)
 Increments this matrix with another matrix A, as: [this]+=[A].
 
template<class RealB >
void MatrDec (const ChMatrix< RealB > &matra)
 Decrements this matrix with another matrix A, as: [this]-=[A].
 
void MatrScale (Real factor)
 Scales a matrix, multiplying all elements by a constant value: [this]*=f.
 
template<class RealB >
void MatrScale (const ChMatrix< RealB > &matra)
 Scales a matrix, multiplying all element by all oter elements of matra (it is not the classical matrix multiplication!)
 
void MatrDivScale (Real factor)
 Scales a matrix, dividing all elements by a constant value: [this]/=f.
 
template<class RealB >
void MatrDivScale (const ChMatrix< RealB > &matra)
 Scales a matrix, dividing all element by all oter elements of matra (it is not the classical matrix multiplication!)
 
template<class RealB , class RealC >
void MatrMultiply (const ChMatrix< RealB > &matra, const ChMatrix< RealC > &matrb)
 Multiplies two matrices, and stores the result in "this" matrix: [this]=[A]*[B].
 
template<class RealB , class RealC >
void MatrMultiplyT (const ChMatrix< RealB > &matra, const ChMatrix< RealC > &matrb)
 Multiplies two matrices (the second is considered transposed): [this]=[A]*[B]' Faster than doing B.MatrTranspose(); result.MatrMultiply(A,B); Note: no check on mistaken size of this!
 
template<class RealB , class RealC >
void MatrTMultiply (const ChMatrix< RealB > &matra, const ChMatrix< RealC > &matrb)
 Multiplies two matrices (the first is considered transposed): [this]=[A]'*[B] Faster than doing A.MatrTranspose(); result.MatrMultiply(A,B);.
 
void MatrTranspose ()
 Transpose this matrix in place.
 
Real Det ()
 Returns the determinant of the matrix. More...
 
void MatrInverse ()
 Returns the inverse of the matrix. More...
 
bool Equals (const ChMatrix< Real > &other)
 Returns true if vector is identical to other matrix.
 
bool Equals (const ChMatrix< Real > &other, Real tol)
 Returns true if vector equals another vector, within a tolerance 'tol'.
 
template<class RealB >
ChVector< Real > Matr34_x_Quat (const ChQuaternion< RealB > &qua)
 Multiplies this 3x4 matrix by a quaternion, as v=[G]*q The matrix must be 3x4. More...
 
template<class RealB >
ChQuaternion< Real > Matr34T_x_Vect (const ChVector< RealB > &va)
 Multiplies this 3x4 matrix (transposed) by a vector, as q=[G]'*v The matrix must be 3x4. More...
 
template<class RealB >
ChQuaternion< Real > Matr44_x_Quat (const ChQuaternion< RealB > &qua)
 Multiplies this 4x4 matrix (transposed) by a quaternion, The matrix must be 4x4. More...
 
void MatrXq_SemiTranspose ()
 Transposes only the lower-right 3x3 submatrix of a hemisimetric 4x4 matrix, used when the 4x4 matrix is a "star" matrix [q] coming from a quaternion q: the non commutative quat. More...
 
void MatrXq_SemiNeg ()
 Change the sign of the 2nd, 3rd and 4th columns of a 4x4 matrix, The product between a quaternion q1 and the coniugate of q2 (q2'), is: q1 x q2' = [q1]*q2' = [q1sn]*q2 where [q1sn] is the seminegation of the 4x4 matrix [q1]. More...
 
Real NormInf ()
 Gets the norm infinite of the matrix, i.e. More...
 
Real NormTwo ()
 Gets the norm two of the matrix, i.e. More...
 
Real Max ()
 Finds max value among the values of the matrix.
 
Real Min ()
 Finds min value among the values of the matrix.
 
void LinInterpolate (const ChMatrix< Real > &matra, const ChMatrix< Real > &matrb, Real mx)
 Linear interpolation of two matrices. More...
 
void RowColInterp (Real vmin, Real vmax, Real umin, Real umax)
 Fills a matrix or a vector with a bilinear interpolation, from corner values (as a u-v patch). More...
 
template<class RealB >
void PasteMatrix (const ChMatrix< RealB > &matra, int insrow, int inscol)
 Paste a matrix "matra" into "this", inserting at location insrow-inscol. More...
 
template<class RealB >
void PasteSumMatrix (const ChMatrix< RealB > &matra, int insrow, int inscol)
 Paste a matrix "matra" into "this", inserting at location insrow-inscol and performing a sum with the preexisting values. More...
 
template<class RealB >
void PasteTranspMatrix (const ChMatrix< RealB > &matra, int insrow, int inscol)
 Paste a matrix "matra", transposed, into "this", inserting at location insrow-inscol. More...
 
template<class RealB >
void PasteSumTranspMatrix (const ChMatrix< RealB > &matra, int insrow, int inscol)
 Paste a matrix "matra", transposed, into "this", inserting at location insrow-inscol and performing a sum with the preexisting values. More...
 
template<class RealB >
void PasteClippedMatrix (const ChMatrix< RealB > &matra, int cliprow, int clipcol, int nrows, int ncolumns, int insrow, int inscol)
 Paste a clipped portion of the matrix "matra" into "this", inserting the clip (of size nrows, ncolumns) at the location insrow-inscol. More...
 
template<class RealB >
void PasteClippedMatrixToVector (const ChMatrix< RealB > &matra, int cliprow, int clipcol, int nrows, int ncolumns, int insindex)
 Paste a clipped portion of the matrix "matra" into "this", where "this" is a vector (of ChMatrix type), inserting the clip (of size nrows, ncolumns) at the location insindex. More...
 
template<class RealB >
void PasteClippedVectorToMatrix (const ChMatrix< RealB > &matra, int cliprow, int clipcol, int nrows, int ncolumns, int insindex)
 Paste a clipped portion of a vector into "this", where "this" is a matrix (of ChMatrix type), inserting the clip (of size nrows, ncolumns) at the location insindex. More...
 
template<class RealB >
void PasteSumClippedMatrix (const ChMatrix< RealB > &matra, int cliprow, int clipcol, int nrows, int ncolumns, int insrow, int inscol)
 Paste a clipped portion of the matrix "matra" into "this", performing a sum with preexisting values, inserting the clip (of size nrows, ncolumns) at the location insrow-inscol. More...
 
template<class RealB >
void PasteVector (const ChVector< RealB > &va, int insrow, int inscol)
 Paste a vector "va" into the matrix.
 
template<class RealB >
void PasteSumVector (const ChVector< RealB > &va, int insrow, int inscol)
 Paste a vector "va" into the matrix, summing it with preexisting values.
 
template<class RealB >
void PasteSubVector (const ChVector< RealB > &va, int insrow, int inscol)
 Paste a vector "va" into the matrix, subtracting it from preexisting values.
 
template<class RealB >
void PasteQuaternion (const ChQuaternion< RealB > &qa, int insrow, int inscol)
 Paste a quaternion into the matrix.
 
template<class RealB >
void PasteSumQuaternion (const ChQuaternion< RealB > &qa, int insrow, int inscol)
 Paste a quaternion into the matrix, summing it with preexisting values.
 
template<class RealB >
void PasteCoordsys (const ChCoordsys< RealB > &cs, int insrow, int inscol)
 Paste a coordsys into the matrix.
 
ChVector< Real > ClipVector (int insrow, int inscol) const
 Returns the vector clipped from insrow, inscol.
 
ChQuaternion< Real > ClipQuaternion (int insrow, int inscol) const
 Returns the quaternion clipped from insrow, inscol.
 
ChCoordsys< Real > ClipCoordsys (int insrow, int inscol) const
 Returns the coordsys clipped from insrow, inscol.
 
template<class RealB >
void Set_Xq_matrix (const ChQuaternion< RealB > &q)
 Fills a 4x4 matrix as the "star" matrix, representing quaternion cross product. More...
 

Protected Attributes

Real buffer [preall_rows *preall_columns]
 
- Protected Attributes inherited from chrono::ChMatrix< Real >
int rows
 
int columns
 
Real * address
 

Additional Inherited Members

- Static Public Member Functions inherited from chrono::ChMatrix< Real >
template<class RealB , class RealC >
static Real MatrDot (const ChMatrix< RealB > &ma, const ChMatrix< RealC > &mb)
 Computes dot product between two column-matrices (vectors) with same size. More...
 

Member Function Documentation

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
template<class RealB , int B_rows, int B_columns>
ChMatrixNM<Real, preall_rows, B_columns> chrono::ChMatrixNM< Real, preall_rows, preall_columns >::operator* ( const ChMatrixNM< RealB, preall_columns, B_columns > &  matbis) const

Multiplies this matrix and another ChMatrixNM matrix.

This is optimized: it returns another ChMatrixMN because size of matbis is known statically. Performance warning: a new object is created.

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
template<class RealB >
ChMatrixDynamic<Real> chrono::ChMatrixNM< Real, preall_rows, preall_columns >::operator* ( const ChMatrix< RealB > &  matbis) const

Multiplies this matrix and another generic matrix.

Returns a ChMatrixDynamic matrix, because size of matbis is not known at compile time. Performance warning: a new object is created.

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
ChMatrixNM<Real, preall_rows, preall_columns> chrono::ChMatrixNM< Real, preall_rows, preall_columns >::operator* ( const Real  factor) const

Multiplies this matrix by a scalar value Performance warning: a new object is created.

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
template<class RealB >
ChMatrixNM<Real, preall_rows, preall_columns> chrono::ChMatrixNM< Real, preall_rows, preall_columns >::operator+ ( const ChMatrix< RealB > &  matbis) const

Sums this matrix and another matrix (of same size) Performance warning: a new object is created.

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
ChMatrixNM<Real, preall_rows, preall_columns> chrono::ChMatrixNM< Real, preall_rows, preall_columns >::operator- ( ) const

Negates sign of the matrix.

Performance warning: a new object is created.

template<class Real = double, int preall_rows = 3, int preall_columns = 3>
template<class RealB >
ChMatrixNM<Real, preall_rows, preall_columns> chrono::ChMatrixNM< Real, preall_rows, preall_columns >::operator- ( const ChMatrix< RealB > &  matbis) const

Subtracts this matrix and another matrix (of same size).

Performance warning: a new object is created.