DRAW-POINT(2) DRAW-POINT(2) NAME Point - coordinate position SYNOPSIS 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; }; DESCRIPTION The Point data type specifies a position in the integer grid. x, y The coordinate position. The coordinates increase to the right (x) and down (y). p.add(q) Returns the point (p.x+q.x, p.y+q.y). p.sub(q) Returns the point (p.x-q.x, p.y-q.y). p.mul(i) Returns the point (p.x*i, p.y*i). p.div(i) Returns the point (p.x/i, p.y/i). p.eq(q) Returns non-zero if the points' coordinates are equal and zero otherwise. p.in(r) Returns non-zero if point p lies within rectangle r and zero otherwise. SEE ALSO draw-intro(2), draw-rect(2) Page 1 Plan 9 (printed 12/5/24)