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The following is a simple example of a 3x3 matrix multiplied by a
3-component vector:
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#include <iostream>
#include <SCTL/Math/Vector.h>
#include <SCTL/Math/Matrix.h>
int main( int argc, char** argv )
{
SCTL::Matrix<fp64_t,3,3> mat;
mat.MakeIdentity();
mat[1][2] = -3.5;
SCTL::Vector<fp64_t,3> vec1( 1.0, -2.5, 1.5 );
SCTL::Vector<fp64_t,3> vec2 = mat*vec1;
std::cout << vec2[0] << " " << vec2[1] << " " << vec2[2] << std::endl;
return( 0 );
}
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NOTES:
- Matrix format is row-major. For example, 'matrix[1][2]' returns the
reference to the element stored at row #1, column #2 (indexing from
zero).
- Both 'Vector<T,N>' and 'Matrix<T,M,N>' use stack-based
memory and are intended for small sizes (< 8 elements per dimension).
For larger vectors and matricies, use the 'StaticVector<T>' and
'StaticMatrix<T>' classes, respectively, as these use dynamic
memory allocation.
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