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| vpGetMatrix(3) | FreeBSD Library Functions Manual | vpGetMatrix(3) |
NAME
vpGetMatrix - retrieve the contents of a transformation matrixSYNOPSIS
#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.
SEE ALSO
VolPack(3), vpCreateContext(3), vpCurrentMatrix(3)| VolPack |
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