Processing Python mode

deque_writer.pyde

"""
Para rodar, installe o Processing modo Python:
https://abav.lugaralgum.com/como-instalar-o-processing-modo-python/

Teclas:
ESPAÇO: apaga tudo
c: Muda modo de cor ou cinza
x: Muda paleta de cor
SHIFT: apaga itens nas duas pontas do deque
"""

from collections import deque

s = 255
h = deque([], 512)

S = {'color': 1,
     'shape': 4,
     'offset': 0,
     'start': 0,
     }

hsb = lambda i: color((i + S['offset']) % (s - S['offset']), s, s, 200)
gray = lambda i: color(32 + i % 128, 200)

def setup():
    size(1152, 648)
    strokeWeight(3)
    colorMode(HSB)
    rectMode(CENTER)
    frameRate(25)
    noCursor()

def draw():
    background(160, 250, 32)
    stroke(45)
    point(mouseX, mouseY)
    for i, (x, y, sha) in enumerate(h):
        noFill()
        c = lerpColor(hsb(i), gray(i), S['color'])
        stroke(c)
        if sha == 0:
            square(x, y, (i % s) / 5)
        elif sha == 1:
            circle(x, y, (i % s) / 5)

            
    if keyPressed and keyCode == SHIFT:
        for _ in range(4):
            if h: h.popleft()
            if h: h.pop()
    if keyPressed and keyCode == CONTROL:
        for _ in range(16):
            if h: h.pop()
            
    if h:
        h.append(h.popleft())
        # h.append(h.popleft())

def mouseDragged():
    h.append((mouseX, mouseY, 0))

def mousePressed():
    if mouseButton == RIGHT:
        h.append((mouseX, mouseY, 1))

def keyPressed():
    if key == 'c':
        S['color'] = (1, 0)[S['color']]
    if key == 'x':
        S['offset'] = {0: 200, 200:0}[S['offset']]
        print S['offset']
    if key == ' ':
        h.clear()