import sys
from PIL import Image
def encode_to_base36(num):
"""Кодирует число в base-36: 0-9, A-Z, a-z"""
if num < 0:
raise ValueError("Number must be non-negative")
charset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
if num < len(charset):
return charset[num]
result = []
while num > 0:
result.append(charset[num % len(charset)])
num //= len(charset)
return ''.join(reversed(result))
def generate_halftone_svg(image_path, output_path, cols=80, max_radius=6, animation_variants=12):
import random
img = Image.open(image_path).convert('L')
aspect_ratio = img.height / img.width
rows = int(cols * aspect_ratio)
img_resized = img.resize((cols, rows), Image.Resampling.LANCZOS)
step = max_radius * 2 + 2
width = cols * step
height = rows * step
svg_elements = []
# Генерируем CSS-классы для разных задержек
animation_classes = []
for i in range(animation_variants):
delay = (i / animation_variants) * 3
encoded_i = encode_to_base36(i)
animation_classes.append(f".a{encoded_i}{{--d:{delay:.2f}s}}")
for y in range(rows):
for x in range(cols):
brightness = img_resized.getpixel((x, y))
factor = (255 - brightness) / 255.0
if factor < 0.15:
continue
radius = factor * max_radius
cx = x * step + step // 2
cy = y * step + step // 2
# Каждой точке свой класс с уникальной задержкой
anim_class = random.randint(0, animation_variants - 1)
encoded_class = encode_to_base36(anim_class)
svg_elements.append(
f''
)
animation_css = "".join(animation_classes)
svg_template = f""""""
with open(output_path, 'w') as f:
f.write(svg_template)
print(f"SVG успешно сгенерирован: {output_path}")
if __name__ == '__main__':
file_name_in = sys.argv[-1]
generate_halftone_svg(file_name_in, f'{file_name_in.split(".")[0]}j.svg', cols=90, max_radius=5)