vpScale(3) Library Functions Manual vpScale(3) 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 ma- trix 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 fol- lowing state variable codes (see vpGeti(3)): VP_CURRENT_MATRIX, VP_CON- CAT_MODE. ERRORS The return value is always VP_OK. SEE ALSO VolPack(3), vpCreateContext(3), vpCurrentMatrix(3) VolPack vpScale(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | STATE VARIABLES | ERRORS | SEE ALSO
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