46 lines
1.2 KiB
Common Lisp
46 lines
1.2 KiB
Common Lisp
(load "snek/src/load")
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(setf *random-state* (make-random-state t))
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(defvar *file* "out.png")
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(defvar *size* 1000)
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(defmacro rand () `(random 1.0))
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(defun rand-rgba ()
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(list (rand) (rand) (rand) (rand)))
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(defun main ()
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(let ((mid (* *size* .5))
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(repeat (random 100))
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(grains (random 10))
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(itt (random 5000))
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(sand (sandpaint* *size* :active (rand-rgba) :bg (rand-rgba))))
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(loop for i in (linspace 100 900 repeat)
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for j from 1 to repeat do
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(print j)
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(let ((snk (snek*))
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(va (list 0 0))
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(vb (list 0 0))
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(p1 (list 100 i))
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(p2 (list 900 i)))
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(loop for k from 1 to itt do
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(let ((v1 (insert-vert (l-on-line k itt p1 p2) into snk))
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(v2 (insert-vert (ladd va (l-on-line k itt p1 p2)) into snk)))
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(setf va (ladd va (l-rand-in-circle (* 0.7 j))))
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(setf vb (ladd vb (l-rand-in-circle (* 0.001 j))))
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(with-snek (snk)
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(with-all-verts (snk v)
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(move-vert v (ladd (l-rand-in-circle 0.1) vb)))
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(join-verts v1 v2))
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(sandpaint-edges sand snk grains)
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(sandpaint-verts sand snk)))))
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(sandpaint-save sand *file*)))
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(main)
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