"""2024-09-19
Esfera 03
Estudo sobre esferas multicoloridas
png
Sketch,py5,CreativeCoding
"""
import numpy as np
import py5
from utils import helpers
sketch = helpers.info_for_sketch(__file__, __doc__)
raio: int = 300
pontos = []
def calcula_esfera(num: int, raio: int = 200):
indices = np.arange(0, num, dtype=float) + 0.5
phi = np.arccos(1 - 2 * indices / num)
theta = np.pi * (20 + (5**0.5)) * indices
x, y, z = np.cos(theta) * np.sin(phi), np.sin(theta) * np.sin(phi), np.cos(phi)
pontos = []
for i in range(0, num):
pontos.append((x[i] * raio, y[i] * raio, z[i] * raio))
return pontos
def setup():
global pontos
py5.size(helpers.LARGURA, helpers.ALTURA, py5.P3D)
py5.background(0)
py5.color_mode(py5.HSB, 360, 100, 100)
pontos.extend(calcula_esfera(500, raio))
def draw():
py5.background(0)
py5.stroke_weight(3)
frame = py5.frame_count
with py5.push_matrix(), py5.push_style():
py5.translate(py5.width / 2, py5.height / 2, 0)
py5.rotate_y(py5.radians(frame))
py5.rotate_z(py5.radians(frame))
for x, y, z in pontos:
h = py5.remap(x, -raio, raio, 0, 360)
s = py5.remap(x, -raio, raio, 50, 100)
b = py5.remap(x, -raio, raio, 50, 100)
cor = py5.color(h, s, b)
py5.stroke(cor)
py5.line(x, y, z, x / 1.2, y / 1.2, z / 1.2)
helpers.write_legend(sketch=sketch, frame="#fff", cor="#000")
def key_pressed():
key = py5.key
if key == " ":
save_and_close()
def save_and_close():
py5.no_loop()
helpers.save_sketch_image(sketch)
py5.exit_sketch()
if __name__ == "__main__":
py5.run_sketch()