Demo ofxPython presentation

mytest.py

#test
import random
from openframeworks import *

print "-"*30

class circle(object):
	def __init__(self):
		self.behavior = self.move()
	
	def update(self):
		self.behavior.next()

	def draw(self):
		ofSetColor(100,100,100)
		ofCircle(self.pos.x,self.pos.y,self.size)

	def move(self):
		# set initial state
		direction = ofVec2f()
		self.pos = ofVec2f(ofRandomWidth(),ofRandomHeight())
		self.size = 0

		# just wait
		for _ in range(int(ofRandom(400))):
			yield

		# grow
		while self.size < 9.9:
			self.size = self.size * 0.9 + 1
			yield

		# move until out of window
		while ofGetWindowRect().inside(self.pos.x, self.pos.y):
			# move in the direction
			self.pos += direction
			# randomly changing direction
			direction.x += ofRandomf()
			direction.y += ofRandomf()
			# move direction towards buttom-left
			direction.rotate(0.04*direction.angle(ofVec2f(-1,1)))
			# reduce size
			self.size *= 0.99
			yield

		# we regenerate our behavior before ending
		self.behavior = self.move()
		yield


class myApp(object):
	def __init__(self):
		self.obj = [circle() for _ in range(400)]

	def update(self):
		for o in self.obj:
			o.update()

	def draw(self):
		for o in self.obj:
			o.draw()

	def mouseMoved(self, x, y):
		pass

	def mousePressed(self, x, y, button):
		pass

	def mouseDragged(self, x, y, buton):
		pass

	def mouseReleased(self, x, y, button):
		pass

	def keyPressed(self, key):
		pass

	def keyReleased(self, key):
		pass

	def windowResized(self, width, height):
		pass