table of contents
vpTranslate(3) | Library Functions Manual | vpTranslate(3) |
NAME¶
vpTranslate - multiply the current transformation matrix by a translation matrixSYNOPSIS¶
#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)VolPack |