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sketch_190903c.pyde
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sketch_190903c.pyde
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def setup():
size(500, 500)
strokeWeight(3)
setup_sorteio()
def setup_sorteio():
global iniciais, finais
iniciais = sorteia_linhas(10)
finais = sorteia_linhas(10)
def sorteia_linhas(num):
linhas = []
for _ in range(num):
margem = 50
x1 = random(margem, width - margem)
y1 = random(margem, height - margem)
x2 = random(margem, width - margem)
y2 = random(margem, height - margem)
linha = (x1, y1, x2, y2)
linhas.append(linha)
return linhas
def draw():
background(255)
t = map(mouseX, 0, width, 0, 1)
for li, lf in zip(iniciais, finais):
l = [lerp (a, b, t) for a, b in zip(li, lf)]
seta(*l)
def go():
for i, li in enumerate(iniciais):
x1, y1, x2, y2 = li
a = atan2(x2 - x1, y1 - y2)
v = PVector.fromAngle(a - HALF_PI) * 10
iniciais[i] = (x1 + v.x, y1 + v.y,
x2 + v.x, y2 + v.y)
def seta(x1, y1, x2, y2):
L = dist(x1, y1, x2, y2)
angle = atan2(x1 - x2, y2 - y1)
pushMatrix()
translate(x1, y1)
rotate(angle)
line(0, 0, 0, L)
l = L / 10
line(0, L, 0 - l, L - l)
line(0, L, 0 + l, L - l)
popMatrix()
def keyPressed():
if key == " ":
setup_sorteio()
if keyCode == UP:
go()
if key == "s":
saveFrame("####.png")