Man page - scale(3)

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Package: libvolpack1-dev
apt-get install libvolpack1-dev

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libvolpack1-dev

Manual

vpScale

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
STATE VARIABLES
ERRORS
SEE ALSO

NAME

vpScale - multiply the current transformation matrix by a scaling matrix

SYNOPSIS

#include <volpack.h>

vpResult

vpScale( vpc, sx, sy, sz )

vpContext *vpc;

double sx.FA double sy.FA double sz.FE

ARGUMENTS

	vpc		VolPack context from vpCreateContext.
	sx		Scale factor for the X dimension.
	sy		Scale factor for the Y dimension.
	sz		Scale factor for the Z dimension.

DESCRIPTION

vpScale is used to multiply the current transformation matrix by a 4-by-4 scaling matrix. The arguments specify independent scale factors for each of the three cartesian axes. The scaling matrix is: sx 0 0 0
0 sy 0 0
0 0 sz 0
0 0 0 1 Use vpCurrentMatrix to set the current transformation matrix. By default, the scaling matrix is post-multiplied (M = M*S where M is the current matrix and S is the scaling 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.