SYNOPSIS
#include <volpack.h>
vpResult
-
vpGetMatrix(vpc, matrix_code, matrix)
-
- vpContext *vpc;
- int matrix_code;
- vpMatrix4 matrix;
ARGUMENTS
- vpc
- VolPack context from vpCreateContext.
- matrix_code
- A code specifying one of the VolPack transformation matrices (VP_MODEL, VP_VIEW, VP_PROJECT or VP_SCREEN).
- matrix
- Matrix for storing the result.
DESCRIPTION
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.ERRORS
The normal return value is VP_OK. The following error return value is possible:- VPERROR_BAD_OPTION
- The matrix_code argument is invalid.