code: 9ferno

ref: e81c54ba2ecc673a4d5f8aed0e9b52841fe07b0d
dir: /man/2/draw-point/

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.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)