Python script for importing assets from the CCG pack.

GitOrigin-RevId: ee77a84b9bf5a69a6615a0ebd414ba6a08ecd6de

tools/assets/import_ccg.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+
+import glob
+import os
+import pprint  # pylint: disable=unused-import
+import sys
+
+from PIL import Image
+
+
+TRANSPARENT_RGBA = (255, 255, 255, 0)
+
+
+def main(args):
+  if len(args) < 2:
+    print('usage: python3 import_ccg.py CCG_ROOT Sprite_Name\n')
+    print('Add an additional OUTPUT_ROOT argument to actually write output.')
+    print('(Otherwise, this script just will perform a dry run.)')
+    return
+
+  ccg_root, sprite_name = args[:2]
+  os.chdir(ccg_root)
+  output_root = None
+  if len(args) > 2:
+    output_root = os.path.join(os.path.expanduser(args[2]), sprite_name)
+    os.makedirs(output_root, exist_ok=True)
+
+  sprite_files = sorted(glob.glob(sprite_name + '/*.png'))
+  print('sprites: %d' % (len(sprite_files)))
+
+  if not sprite_files:
+    print('no sprite files found!')
+    return
+
+  # Collect sizes.
+  max_width = 0
+  max_height = 0
+  for sprite in sprite_files:
+    with Image.open(sprite) as image:
+      max_width = max(max_width, image.width)
+      max_height = max(max_height, image.height)
+  new_size = (max_width, max_height)
+  print('new size: %dx%d' % new_size)
+
+  # Now frob them.
+  for i, sprite in enumerate(sprite_files):
+    with Image.open(sprite) as image:
+      top_pad = max_height - image.height
+      left_pad = (max_width - image.width) // 2
+      right_pad = max_width - image.width - left_pad
+      out_filename = '%s_%03d.png' % (sprite_name, i)
+      print('%03d: %3dx%-3d top: %2d left: %2d right: %2d %s -> %s' % (
+          i, image.width, image.height, top_pad, left_pad, right_pad, sprite,
+          out_filename))
+      if output_root:
+        new_image = Image.new('RGBA', new_size, TRANSPARENT_RGBA)
+        new_image.paste(image, (left_pad, top_pad))
+        new_image.save(os.path.join(output_root, out_filename))
+
+
+if __name__ == '__main__':
+  main(sys.argv[1:])