NAME

dc_to_vdc − transform device coordinate point into virtual device coordinate point using the inverse of the current VDC-to-DC transformation. 

SYNOPSIS

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 );

DESCRIPTION

Input Parameters

fildes 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 Transformed point in virtual device coordinate values. 

Discussion

dc_to_vdc transforms a point in device coordinates to virtual device coordinate values, using the inverse of the current VDC-to-DC coordinates transformation to perform the calculation. 

SEE ALSO

transform_point(3G), vdc_to_dc(3G). 

Hewlett-Packard Company  —  November 03, 1994