NAME

perimeter_repeat_length, intperimeter_repeat_length, bf_perimeter_repeat_length − define line type pattern size for polygon perimeters and backfacing polygon perimeters

SYNOPSIS

C Syntax:

void perimeter_repeat_length(fildes,length);
int fildes;
float length;

void intperimeter_repeat_length(fildes,length);
int fildes,length;

void bf_perimeter_repeat_length(fildes,length);
int fildes;
float length;

FORTRAN77 Syntax:

subroutine perimeter_repeat_length(fildes,length)
integer∗4 fildes
real length

subroutine intperimeter_repeat_length(fildes,length)
integer∗4 fildes,length

subroutine bf_perimeter_repeat_length(fildes,length)
integer∗4 fildes
real length

Pascal Syntax:

procedure perimeter_repeat_length(fildes:integer; length:real);

procedure intperimeter_repeat_length(fildes,length:integer);

procedure bf_perimeter_repeat_length(fildes:integer; length:real);

DESCRIPTION

Input Parameters

fildes Integer file descriptor returned by gopen when an I/O path to a graphics device is opened. 

length Repeat length of the perimeter type pattern, or backfacing perimeter type pattern, measured in virtual device units along the x-direction. 

Discussion

Perimeter_repeat_length and intperimeter_repeat_length set the repeat length for polygon, arc, circle, rectangle, and ellipse output primitive perimeters. 

bf_perimeter_repeat_length sets the repeat length for the perimeter of backfacing elements of polygon and rectangle.

There are some device-dependent limitations for setting repeat length.  Some raster devices round to the nearest multiple of 16 pixels. 

Integer operations are only available when using the INT_XFORM gopen mode. When in INT_XFORM mode, floating point operations are not available for that fildes. Floating point operations are the default, or can be specified with FLOAT_XFORM mode. For a list of integer operations, floating point operations and common operations see the starbase(3G) manual page. 

DEFAULT

Repeat length is 1/32 of the default vdc_extent x-axis. 

SEE ALSO

line_repeat_length(3G), perimeter_type(3G), vdc_extent(3G). 
 

Hewlett-Packard Company  —  May 11, 2021