DC_TO_VDC(3G)

NAME

dc_to_vdc − transform a device coordinate point into a Virtual Device Coordinate point using the inverse of the current vdc to device coordinate transformation.

SYNOPSIS SYNTAX

C SYNTAX

void dc_to_vdc(fildes,dcx,dcy,dcz,vdcx,vdcy,vdcz)
int fildes;
int dcx,dcy,dcz;
float *vdcx,*vdcy,*vdcz;

FORTRAN77 SYNTAX

        subroutine dc_to_vdc(fildes,dcx,dcy,dcz,vdcx,vdcy,vdcz)
        integer*4 fildes
        integer*4 dcx,dcy,dcz
        real vdcx,vdcy,vdcz

PASCAL SYNTAX

procedure dc_to_vdc(fildes:integer;dcx,dcy,dcz:integer;
var vdcx,vdcy,vdcz:real);

HP-UX COMPATIBILITY

Level: HP-UX/STANDARD

Origin: HP

DESCRIPTION

INPUT PARAMETERS

fildes
is an integer file descriptor returned by gopen when an I/O path to a graphics device is opened.
dcx,dcy,dcz
defines a device coordinate point to be transformed by this procedure.

OUTPUT PARAMETERS

vdcx,vdcy,vdcz
the transformed point in Virtual Device Coordinate values.

DISCUSSION

This procedure is used to transform a point in device coordinates to Virtual Device Coordinate values. This operation uses the inverse of the current vdc-to-device coordinates transformation to perform this calculation.

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