ref: d7809194db6f52a6fc87a6d10bff7e78cc03c4d2
dir: /module/math/polyfill.m/
Polyfill: module { PATH: con "/dis/math/polyfill.dis"; Zstate: adt{ r: Draw->Rect; zbuf0, zbuf1: array of int; xlen: int; ylen: int; xylen: int; }; init: fn(); initzbuf: fn(r: Draw->Rect): ref Zstate; clearzbuf: fn(s: ref Zstate); setzbuf: fn(s: ref Zstate, zd: int); fillpoly: fn(d: ref Image, v: array of Point, w: int, s: ref Image, p: Point, zstate: ref Zstate, dc, dx, dy: int); };