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snek/examples/cells.lisp
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#!/usr/bin/sbcl --script | |
(load "../src/load") | |
(load "../utils/force") | |
(defun init-snek (n m size xy) | |
(let ((snk (snek:make :max-verts 5000))) | |
(mapcar | |
(lambda (g) (let ((mid (rnd:in-circ (* 0.5d0 (- size 200d0)) :xy xy))) | |
(snek:add-path! snk | |
(math:rep (p (math:linspace n 0d0 1d0 :end nil)) | |
(vec:on-circ p 20d0 :xy mid)) | |
:g g | |
:closed t))) | |
(math:nrep m (snek:add-grp! snk))) | |
snk)) | |
(defun main (size fn) | |
(let ((itt 1000) | |
(grains 30) | |
(snk (init-snek 5 800 size (vec:rep (* 0.5d0 size)))) | |
(sand (sandpaint:make size | |
:fg (pigment:white 0.05) | |
:bg (pigment:dark)))) | |
(loop for i from 0 below itt do | |
(print-every i 100) | |
(snek:with (snk :zwidth 60.0d0) | |
(snek:itr-verts (snk v) | |
(map 'list (lambda (w) (force? snk v w -0.05)) | |
(snek:verts-in-rad snk (snek:get-vert snk v) 60.0d0)) | |
;(snek:with-verts-in-rad (snk (snek:get-vert snk v) 60d0 w) | |
; (cons)) | |
) | |
(snek:itr-grps (snk g) | |
(snek:itr-edges (snk e :g g) | |
(force? snk (first e) (second e) 0.1)))) | |
(snek:itr-grps (snk g :collect nil) | |
(sandpaint:bzspl-stroke sand | |
(bzspl:make (snek:get-grp-verts snk :g g) :closed t) | |
grains))) | |
(sandpaint:save sand fn :gamma 1.5))) | |
(time (main 1000 (second (cmd-args)))) | |