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--- journal:201312 [2013/12/29 08:43] – created donghee
+++ journal:201312 [2018/07/18 14:10] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== 12월 29일 ======
+flock
+<code>
+from nodebox.graphics import *
+from nodebox.graphics.physics import Flock
+flock = Flock(20, 0, 0, 500, 500)
+flock.sight = 500
+def draw(canvas):
+	background(1)
+	fill(0, 0.75)
+	flock.update(cohesion=0.15)
+	for boid in flock:
+		push()
+		translate(boid.x, boid.y)
+		scale(0.5 + 1.5 * boid.depth)
+		rotate(boid.heading)
+		arrow(0, 0, 15)
+		star(0,0, 10,50,20)
+		pop()
+canvas.fps=30
+canvas.size = 600, 400
+canvas.run(draw)
+</code>
+music21, rtmidi
 <code>
 import time