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researchv10 Dan Cross

.TH PT 3L "630 MTG"
.XE "Pt()"
.XE "Rpt()"
.XE "Rect()"
.SH NAME
pt: Pt, Rpt, Rect \- create a Point or Rectangle from arguments
.SH SYNOPSIS
.ft B
#include <dmd.h>
.sp
Point Pt (x, y)
.br
int x, y;
.sp
Rectangle Rpt (p, q)
.br
Point p, q;
.sp
Rectangle Rect (a, b, c, d)
.br
int a, b, c, d;
.SH DESCRIPTION
These functions
are special macros that are
to be used
.B only
in an argument list to a function.
They are functionally equivalent to the ones in \fIfpt(3L)\fR but are
faster for the above situation. 
.PP
The
.I Pt
argument
passes a coordinate pair as a Point to a function.
.PP
The
.I Rpt
argument
passes two Points as a Rectangle to a function.
.PP
The
.I Rect
argument
passes four coordinates (two coordinate pairs) as a Rectangle to a function. 
.SH EXAMPLE
The following subroutine draws two boxes in the upper
left corner of the window.
.sp
.nf
.ft CM
#include <dmd.h>

drawboxes()
{
	Point add();
	Rectangle raddp();

	box(&display,
	    Rpt(Drect.origin, add(Drect.origin, Pt(100,100))),
	    F_STORE);

	box(&display,
	    raddp(Rect(0,0,200,200), Drect.origin),
	    F_STORE);
}
.fi
.ft 1
.PP
.SH SEE ALSO
fpt(3L).

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