def draw_oscillating_sphere(save_dir, number_of_circles, line_thickness):
# Craete total 60 images
for i in np.arange(60):
# 2.5 is an angle of Z axis
# pi * sin(k) is an oscillating factor
r = rotation.rotation(
3,
2.5 + np.pi * np.sin(i / 10.0) * np.random.uniform(0.75, 1) / 20.0)
# Create the canvas size of (500, 500)
im = Image.new("RGB", (500, 500), (1, 1, 1))
draw = ImageDraw.Draw(im, 'RGBA')
# Sphere's center is np.array([0,0,0])
# The vector that passes through the center is np.array([0,0,1])
# Radius is oscillating randomly: 1 * np.random.uniform(0.75,1) + 0.4 * np.sin(np.pi/10.0*i)
circle.draw_sphere(draw,
np.array([0, 0, 0]),
np.array([0, 0, 1]),
1 * np.random.uniform(0.75, 1) +
0.4 * np.sin(np.pi / 10.0 * i),
r,
num_circle=number_of_circles,
rgba=(182, 183, 186, 255),
width=line_thickness)
file_name = save_dir + str(i) + '.png'
im.save(file_name)
def draw_wavy_sphere_wrapper(save_dir, number_of_circles, line_thickness):
# Create n images (frames) where n = number_of_circles
for i in np.arange(number_of_circles):
wavy_index = i % number_of_circles
# 2.52 is an angle of Z axis (Why do I choose 2.52? For an aesthetic reason:))
r = rotation.rotation(
3,
2.50 + np.pi * np.sin(i / 10.0) * np.random.uniform(0.8, 1) / 30.0)
# Create the canvas size of (500, 500)
im = Image.new("RGB", (500, 500), (1, 1, 1))
draw = ImageDraw.Draw(im, 'RGBA')
# Sphere's center is np.array([0,0,0])
# The vector that passes through the center is np.array([0,0,1])
# Radius is oscillating randomly
circle.draw_sphere(draw,
np.array([0, 0, 0]),
np.array([0, 0, 1]),
1,
r,
wavy_index=wavy_index,
num_circle=number_of_circles,
rgba=(182, 183, 186, 255),
width=line_thickness)
file_name = save_dir + str(i) + '.png'
im.save(file_name)
def draw_rotating_sphere(save_dir, number_of_circles, line_thickness):
# Craete total 30 images
for i in np.arange(30):
# We'll rotate the sphere by 18 degrees (18 = pi/10)
r = rotation.rotation(3, np.pi*i / 100.0)
# Create the canvas size of (500, 500)
im = Image.new("RGB", (500, 500), (1, 1, 1))
draw = ImageDraw.Draw(im, 'RGBA')
circle.draw_sphere(draw, np.array([0,0,0]), np.array([0,0,1]), 1, r, num_circle = number_of_circles, rgba=(182, 183, 186, 255), width = line_thickness)
# Save
file_name = save_dir + str(i) + '.png'
im.save(file_name)