Retrieve the contents of a transformation matrix
#include <volpack.h>
\$1 vpGetMatrix(vpc, matrix_code, matrix)
vpContext *vpc; int matrix_code; vpMatrix4 matrix;
VolPack context from vpCreateContext.
A code specifying one of the VolPack transformation matrices (VP_MODEL, VP_VIEW, VP_PROJECT or VP_SCREEN).
Matrix for storing the result.
vpGetMatrix retrieves the contents of one of the transformation matrices (see vpCurrentMatrix(3)). The special code VP_SCREEN causes the function to compute the transformation from object coordinates to image coordinates and return a matrix describing this transformation.
The normal return value is VP_OK. The following error return value is possible:
The matrix_code argument is invalid.
VolPack(3), vpCreateContext(3), vpCurrentMatrix(3)