ref: a920c765f2b4130590fb5971a50690b21664957a
dir: /man/2/draw-point/
.TH DRAW-POINT 2
.SH NAME
Point \-
coordinate position
.SH SYNOPSIS
.EX
include "draw.m";
draw := load Draw Draw->PATH;
Point: adt
{
x: int;
y: int;
add: fn(p: self Point, q: Point): Point;
sub: fn(p: self Point, q: Point): Point;
mul: fn(p: self Point, i: int): Point;
div: fn(p: self Point, i: int): Point;
eq: fn(p: self Point, q: Point): int;
in: fn(p: self Point, r: Rect): int;
};
.EE
.SH DESCRIPTION
.PP
The
.B Point
data type specifies a position in the integer grid.
.TP 10
.BR x ", " y
The coordinate position. The coordinates increase to the right
.RI ( x )
and down
.RI ( y ).
.TP
.IB p .add( q )
Returns the point
.BI ( p .x+ q .x,
.IB p .y+ q .y)\fR.
.TP
.IB p .sub( q )
Returns the point
.BI ( p .x\- q .x,
.IB p .y\- q .y)\fR.
.TP
.IB p .mul( i )
Returns the point
.BI ( p .x* i ,
.IB p .y* i )\fR.
.TP
.IB p .div( i )
Returns the point
.BI ( p .x/ i ,
.IB p .y/ i )\fR.
.TP
.IB p .eq( q )
Returns non-zero if the points' coordinates are equal and zero otherwise.
.TP
.IB p .in( r )
Returns non-zero if point
.I p
lies within rectangle
.I r
and zero otherwise.
.SH SEE ALSO
.IR draw-intro (2),
.IR draw-rect (2)