Name

DMPDW − Converts device coordinate points to world coordinate values. 

Operating States: PHOP, WSOP, ∗, ∗
Digital PHIGS extension function

Syntax

DMPDW (WKID, N, DCPTS, ERRIND, VIEW, WCPTS)

Argument    Data Type      Access      Description
---------------------------------------------------------------------------
WKID        Integer        Read        Workstation identifier
N           Integer        Read        Number of points
DCPTS       Array of       Read        Device coordinate point list, in
            reals                      the order x1, y1, z1, x2, y2, z2...
ERRIND      Integer        Write       Error indicator
VIEW        Integer        Write       View index used for the transfor-
                                       mation
WCPTS       Array of       Write       World coordinate point list, in the
            reals                      order x1, y1, z1, x2, y2, z2...
--------------------------------------------------------------------------

Description

DMPDW converts the specified list of device coordinate points to world coordinate values and returns them in mapped points.  Digital PHIGS uses the same procedure for stroke input devices for this conversion.  Digital PHIGS transforms the points to normalized projection coordinates by the inverse of the workstation transformation.  To transform the points to world coordinate values, Digital PHIGS searches the workstation’s view table for the highest priority view that contains all the specified points, and uses the inverse view mapping and orientation transformations of that view.  The function returns the view index of the view used for the transformation. 

Digital PHIGS Version 3.1 does not support this function.

See Also

DMPDWS
DMWSDC