NAME
vpTranslate - multiply the current transformation matrix by a
translation matrix
SYNOPSIS
#include <volpack.h>
vpResult
vpTranslate(vpc, tx, ty, tz)
vpContext *vpc;
double *tx, *ty, *tz;
ARGUMENTS
vpc VolPack context from vpCreateContext.
tx X component of translation vector.
ty Y component of translation vector.
tz Z component of translation vector.
DESCRIPTION
vpTranslate is used to multiply the current transformation matrix by a
4-by-4 translation matrix. The translation matrix is:
1 0 0 tx
0 1 0 ty
0 0 1 tz
0 0 0 1
Use vpCurrentMatrix to set the current transformation matrix. By
default, the transformation matrix is post-multiplied (M = M*T where M
is the current matrix and T is the translation matrix). The
VP_CONCAT_MODE option to vpSeti can be used to select pre-
multiplication.
STATE VARIABLES
The current matrix concatenation parameters can be retrieved with the
following state variable codes (see vpGeti(3)): VP_CURRENT_MATRIX,
VP_CONCAT_MODE.
ERRORS
The return value is always VP_OK.
SEE ALSO
VolPack(3), vpCreateContext(3), vpCurrentMatrix(3)