Pixel avatar in Python (#252)

Add Pixel avatar in Python

Author: ghajba

Pixel_Avatar_Generator/pixel_avatar.py

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+"""
+Generate a pixel-art avatar you can use on different platforms.
+"""
+
+from PIL import Image, ImageDraw
+import random
+
+# symmetry is needed to generate tasty avatars
+symmetry = []
+avatar_color = (255, 255, 255)
+background_color = (0, 0, 0)
+
+
+def create_square(border, draw, color, element, size):
+    if element == size // 2:
+        draw.rectangle(border, color)
+    elif len(symmetry) == element + 1:
+        used_color = symmetry.pop()
+        draw.rectangle(border, used_color)
+    else:
+        symmetry.append(color)
+        draw.rectangle(border, color)
+
+
+def draw_avatar(border, draw, size):
+    x0, y0, x1, y1 = border
+    square_size = (x1 - x0) / size
+
+    colors = [avatar_color, background_color]
+
+    i = 1
+    for y in range(0, size):
+        i *= -1
+        element = 0
+        for x in range(0, size):
+            top_left_x = x * square_size + x0
+            top_left_y = y * square_size + y0
+            bot_right_x = top_left_x + square_size
+            bot_right_y = top_left_y + square_size
+            create_square((top_left_x, top_left_y, bot_right_x, bot_right_y), draw, random.choice(colors), element, size)
+            if element == size // 2 or element == 0:
+                i *= -1
+            element += i
+
+
+def generate_avatar(pixel_size=9, image_size=400, target_folder='.', avatar_name='PixelAvatar'):
+    original_dimension = image_size
+
+    orig_image = Image.new('RGB', (original_dimension, original_dimension), color=background_color)
+    draw = ImageDraw.Draw(orig_image)
+    friend_size = original_dimension
+    padding = friend_size / pixel_size
+
+    top_left_x = padding / 2
+    top_left_y = padding / 2
+    bot_right_x = top_left_x + friend_size - padding
+    bot_right_y = top_left_y + friend_size - padding
+    draw_avatar((top_left_x, top_left_y, bot_right_x, bot_right_y), draw, pixel_size)
+
+    orig_image.save("../{}/{}.png".format(target_folder, avatar_name))
+
+
+if __name__ == '__main__':
+    generate_avatar()

PythonAlgoVisualizer/PixelAvatar.png

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+# Pixel Avatar
+
+This simple source code generates you a black-and-white pixel avatar. You have a lot of options to tweak: size, numbers of pixels used in each row, and colors used.
+
+![an example avatar](PixelAvatar.png)