| Name : perl-Math-VectorReal
| |
| Version : 1.02
| Vendor : obs://build_opensuse_org/devel:languages:perl
|
| Release : lp155.8.1
| Date : 2023-07-20 18:23:07
|
| Group : Development/Libraries/Perl
| Source RPM : perl-Math-VectorReal-1.02-lp155.8.1.src.rpm
|
| Size : 0.04 MB
| |
| Packager : https://www_suse_com/
| |
| Summary : Module to handle 3D Vector Mathematics
|
Description :
The \'Math::VectorReal\' package defines a 3D mathematical \"vector\", in a way
that is compatible with the previous CPAN module \'Math::MatrixReal\'.
However it provides a more vector oriented set of mathematical functions
and overload operators, to the \'MatrixReal\' package. For example the normal
perl string functions \"x\" and \".\" have been overloaded to allow vector
cross and dot product operations. Vector math formula thus looks like
vector math formula in perl programs using this package.
While this package is compatible with Math::MatrixReal, you DO NOT need to
have that package to perform purely vector orientated calculations. You
will need it however if you wish to do matrix operations with these
vectors. The interface has been designed with this package flexibility in
mind.
The vectors are defined in the same way as a \"row\" \'Math::MatrixReal\'
matrix, instead of that packages choice of \"column\" definition for vector
operations. Such vectors are multiplied to matices with the vector on the
left and the matrix on the right. EG: v * M -> \'v
Not only is this the way I prefer to handle vectors, but it is the way most
graphics books use vectors. As a bonus it results in no overload conflicts
between this package and that of Math::MatrixReal, (the left objects
overload operator is called to do the mathematics). It also is a lot
simpler than \'MatrixReal\' column vector methods, which were designed for
equation solving rather than 3D geometry operations.
The vector_matrix() function provided, simplifies the creation a
\'MatrixReal\' object from 3 (usually orthogonal) vectors. This with its
vector orientated math operators makes it very easy to define orthogonal
rotation matrices from \'Math::VectorReal\' objects. See a rough example in
the synopsis above, or in the file \"matrix_test\" in the packages source.
NOTE: the 6th element the \'Math::MatrixReal\' array object is used to hold
the length of the vector so that it can be re-used without needing to be
re-calculated all the time. This means the expensive sqrt() function, need
not be called unless nessary. This usage should not effect the direct use
of these objects in the \'Math::MatrixReal\' functions.
|
RPM found in directory: /packages/linux-pbone/ftp5.gwdg.de/pub/opensuse/repositories/devel:/languages:/perl:/CPAN-M/15.5/noarch |
