"""2026-02-12
Eye 02
Desenho que se assemelha a um olho
ericof.com|https://openprocessing.org/sketch/1307209
png
Sketch,py5,CreativeCoding
"""
from sketches.utils.draw import canvas
from sketches.utils.helpers import sketches as helpers
import py5
sketch = helpers.info_for_sketch(__file__, __doc__)
cor_fundo = py5.color(0)
balls: list["Ball"] = []
inner_radius_i = 50
inner_radius = 90
inner_radius_sa = 160
inner_radius_sb = 350
outer_radius = 500
d = 0.0
e = 0.0
g = 0.0
noise_amp = 40
noise_factor = 33
inner_noise_factor = 20
inner_alpha = 100
outer_alpha = 15
thick = 2
step = 0.8
point_step = 0.75
point_index = 0
def lerp_color_rgba(c1, c2, t):
t = py5.constrain(t, 0, 1)
r = py5.lerp(py5.red(c1), py5.red(c2), t)
g_ = py5.lerp(py5.green(c1), py5.green(c2), t)
b = py5.lerp(py5.blue(c1), py5.blue(c2), t)
a = py5.lerp(py5.alpha(c1), py5.alpha(c2), t)
return py5.color(r, g_, b, a)
def on_screen(x, y):
return 0 <= x <= py5.width and 0 <= y <= py5.height
class Ball:
def __init__(self, px, py, vx, vy, ax, ay, r):
self.px = px
self.py = py
self.vx = vx
self.vy = vy
self.ax = ax
self.ay = ay
self.r = r
def update(self):
# Integrate
self.vx += self.ax
self.vy += self.ay
self.px += self.vx
self.py += self.vy
# Flow field-ish noise steering (same spirit as original)
noise_fx = 35
noise_fy = 35
nx = py5.noise(self.px / noise_fx, self.py / noise_fy, 10)
ny = py5.noise(self.px / noise_fx, self.py / noise_fy, 100)
self.vx = py5.remap(nx, 0, 1, -1, 1) * 2.5
self.vy = py5.remap(ny, 0, 1, -1, 1) * 2.5
def draw(self):
dist_ = py5.sqrt(self.px * self.px + self.py * self.py)
alpha = py5.remap(dist_, inner_radius, outer_radius, 100, 0)
alpha = py5.constrain(alpha, 0, 255)
py5.no_stroke()
py5.fill(255, 255, 255, alpha)
py5.circle(self.px, self.py, self.r)
def setup():
py5.size(*helpers.DIMENSOES.external, py5.P3D)
py5.background(cor_fundo)
num_balls = 5_000
inner_r = 50
outer_r = 400
for _ in range(num_balls):
ang = py5.random(py5.TWO_PI) # radians
r = py5.random(inner_r, outer_r)
x = py5.cos(ang) * r
y = py5.sin(ang) * r
balls.append(Ball(x, y, x * 2.0, y * 2.0, x * 0.018, y * 0.018, 3.5))
def inner_ring(d: float, radius: int = 1):
with py5.push_matrix():
py5.rotate(d)
start = (
inner_radius_i
+ py5.noise(
py5.sin(py5.frame_count / inner_noise_factor / 10),
py5.cos(py5.frame_count / inner_noise_factor / 10),
)
* 15
+ py5.random(-3, 3)
)
j = start
while j < outer_radius:
alpha = py5.remap(j, inner_radius_i, outer_radius, inner_alpha, outer_alpha)
mix = py5.remap(j, 0, (outer_radius - inner_radius), 0, 1)
c3 = py5.color(247, 127, 0)
c4 = py5.color(255, 255, 255)
ci = lerp_color_rgba(c4, c3, mix)
py5.no_stroke()
py5.fill(py5.red(ci), py5.green(ci), py5.blue(ci), alpha)
y = py5.noise(j / noise_factor / 3, py5.frame_count) * noise_amp
py5.circle(j, y, radius)
j += point_step
def middle_ring(e: float, point_index: int):
with py5.push_matrix():
py5.rotate(e)
start = (
inner_radius
+ 10 * py5.sin(20 * py5.frame_count)
+ py5.noise(py5.frame_count / inner_noise_factor) * 50
+ py5.random(-5, 5)
)
i = start
while i < outer_radius:
alpha = py5.remap(i, inner_radius, outer_radius, inner_alpha, outer_alpha)
mix = py5.remap(i, 0, (outer_radius - inner_radius), 0, 1)
c1 = py5.color(0, 167, 225)
c2 = py5.color(255, 255, 255)
ci = lerp_color_rgba(c2, c1, mix)
thick1 = (
py5.noise(py5.frame_count * 10) * thick
+ 20 * (py5.sin(10 * py5.frame_count) + 1)
+ py5.random(-5, 5)
)
iris_stroke = 1.6 if point_index < thick1 else 1.0
py5.no_stroke()
py5.fill(py5.red(ci), py5.green(ci), py5.blue(ci), alpha)
y = py5.noise(i / noise_factor, py5.frame_count) * noise_amp
py5.circle(i, y, iris_stroke)
point_index += 1
i += point_step
def outer_ring(g: float, point_index: int, radius: int = 1):
with py5.push_matrix():
py5.rotate(g)
start = (
inner_radius_sa
+ 10 * py5.sin(2.5 * py5.frame_count)
+ py5.noise(py5.frame_count / inner_noise_factor / 1.1) * 40
+ py5.random(-2, 2)
)
i = start
while i < outer_radius:
alpha = py5.remap(
i, inner_radius, outer_radius, inner_alpha, outer_alpha - 15
)
mix = py5.remap(i, 0, (outer_radius - inner_radius), 0, 1)
c5 = py5.color(3, 71, 72)
c6 = py5.color(20, 129, 186)
ci = lerp_color_rgba(c6, c5, mix)
py5.no_stroke()
py5.fill(py5.red(ci), py5.green(ci), py5.blue(ci), alpha)
py5.circle(i, 0, radius)
point_index += 1
i += point_step
def draw_rings():
global d, e, g, point_index
with py5.push():
py5.translate(*helpers.DIMENSOES.centro, 10)
full_turn = py5.TWO_PI
# --- Inner dotted line ring ---
if d < full_turn:
inner_ring(d, 1)
# --- Middle “muscle” ring ---
if e < full_turn:
middle_ring(e, point_index)
# --- Outer solid rings (two passes) ---
if g < full_turn:
outer_ring(g, point_index, 1)
else:
save_and_close()
d += py5.radians(step * py5.random(0.5, 2))
g += py5.radians(step * 0.2)
e += py5.radians(step * py5.random(0.5, 0.8))
point_index = 0
# Particles
with py5.push():
py5.translate(*helpers.DIMENSOES.centro)
for b in balls:
b.update()
b.draw()
def draw():
with py5.push():
py5.translate(0, 0, -100)
draw_rings()
# Credits and go
canvas.sketch_frame(
sketch,
cor_fundo,
"large_transparent_white",
"transparent_white",
version=2,
)
def key_pressed():
key = py5.key
if key == " ":
save_and_close()
def save_and_close():
py5.no_loop()
canvas.save_sketch_image(sketch)
py5.exit_sketch()
if __name__ == "__main__":
py5.run_sketch()
