Alexandre B A Villares
@villares

Making free and open-source educational resources

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Description

Hi!

I work as a technology and arts educator, and I develop free and open didactic materials, I also collaborate with free software projects. My main research interests are computational art procedures, generative design, creative coding and how to teach programming in visual contexts.

If you support me with your donations I can make more materials and collaborate more. If LiberaPay doesn't work well in your country or currency, try this PayPal donation link

from collections import deque  # a double-ended queue
import py5  # check out https://github.com/py5coding 

history = deque(maxlen=512)  # mouse dragged positions

def setup():   # py5 will call this once to set things up
    py5.size(600, 400)
    py5.no_stroke()
    py5.color_mode(py5.HSB)

def draw():   # py5 will call this in a loop
    py5.background(51)
    for i, (x, y) in enumerate(history):
        py5.fill(i / 2, 255, 255, 128)
        py5.circle(x, y, 8 + i / 16)
    if history:
        history.append(history.popleft())

def mouse_dragged():  # py5 will call this when you drag the mouse
    history.append((py5.mouse_x, py5.mouse_y))

def key_pressed():   # py5 will call this when a key is pressed
    history.clear()

py5.run_sketch()