rectangle(3G)

NAME

dcrectangle, intrectangle, rectangle − define rectangular region to be filled and/or edged

SYNOPSIS

C Syntax:

void dcrectangle(fildes,dcx1,dcy1,dcx2,dcy2);
int fildes,dcx1,dcy1,dcx2,dcy2;

void intrectangle(fildes,x1,y1,x2,y2);
int fildes,x1,y1,x2,y2;

void rectangle(fildes,x1,y1,x2,y2);
int fildes;
float x1,y1,x2,y2;

FORTRAN77 Syntax:

subroutine dcrectangle(fildes,dcx1,dcy1,dcx2,dcy2)
integer*4 fildes,dcx1,dcy1,dcx2,dcy2

subroutine intrectangle(fildes,x1,y1,x2,y2)
integer*4 fildes,x1,y1,x2,y2

subroutine rectangle(fildes,x1,y1,x2,y2)
integer*4 fildes
real x1,y1,x2,y2

Pascal Syntax:

procedure dcrectangle(fildes,dcx1,dcy1,dcx2,dcy2:integer);

procedure intrectangle(fildes,x1,y1,x2,y2:integer);

procedure rectangle(fildes:integer;x1,y1,x2,y2:real);

DESCRIPTION

Input Parameters

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

x1,y1 First corner of the rectangle in world coordinates.

x2,y2 Second corner of the rectangle in world coordinates.

dcx1,dcy1 First corner of the rectangle in device coordinates.

dcx2,dcy2 Second corner of the rectangle in device coordinates.

Discussion

A boundary of a rectangular region is defined by defining diagonally opposite corners of the rectangle. If the transform mode has been set to 3d, the z value used is that of the current position.

The rectangle is filled and/or outlined according to the current interior style, using the current fill color and perimeter attributes. As with all output primitives, rectangle is affected by the current drawing mode and write enable.

No clipping or transformations are performed on device coordinate procedures.

Device coordinate current pen position and world device coordinate current pen position are not related. If you are switching between the two coordinate systems, always begin the use of either system with a move to a known location before performing any other operations.

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.

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