vpGetMatrix

Section: C Library Functions (3) Updated: Local index Up

NAME

vpGetMatrix - retrieve the contents of a transformation matrix

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.

This document was created by man2html, using the manual pages.
Time: 21:46:42 GMT, April 16, 2011