include missed files

.gitignore

@@ -64,7 +64,7 @@ instance/
 docs/_build/
 
 # PyBuilder
-target/
+./target/
 
 # IPython Notebook
 .ipynb_checkpoints

nasabot/geo/animation/target/__init__.py

@@ -0,0 +1,3 @@
+from nasabot.geo.animation.target.gif import Gif
+
+__all__ = [Gif]

nasabot/geo/animation/target/gif.py

@@ -0,0 +1,35 @@
+import logging
+import os
+from nasabot.geo.animation.target import \
+    imageio_animation, wand_animation
+from slugify import slugify
+
+logger = logging.getLogger(__name__)
+
+
+def uri_2_filename(uri):
+    """
+    convert uri to related filename
+    :param uri:
+    :return:
+    """
+    *first, ext = uri.split('.')
+    return slugify('.'.join(first)) + '.' + ext
+
+
+class Gif:
+    def __init__(self, target_filename=''):
+        self.target_filename = target_filename
+        self.root_path = os.path.dirname(target_filename)
+
+        # TODO: should make it selectable
+        self.animation_provider = imageio_animation
+        # self.animation_provider = wand_animation
+
+    def get_filename_by_url(self, url):
+        return os.path.join(self.root_path, uri_2_filename(url))
+
+    async def save(self, files):
+        await self.animation_provider.animate(
+            os.path.join(self.target_filename), files)
+        logger.info('# gif file is saved to {}'.format(self.target_filename))

nasabot/geo/animation/target/imageio_animation.py

@@ -0,0 +1,19 @@
+import logging
+import imageio
+
+logger = logging.getLogger(__name__)
+
+
+async def animate(export_filename, file_sequence):
+    """
+
+    :param file_sequence:
+    :return:
+    """
+    logger.debug('# animate sequence of files')
+    logger.debug(file_sequence)
+
+    frames = [imageio.imread(file_name) for file_name in file_sequence]
+    imageio.mimsave(export_filename, frames, 'GIF',
+                    # fps=30,
+                    )

nasabot/geo/animation/target/wand_animation.py

@@ -0,0 +1,22 @@
+import logging
+from wand.image import Image
+
+logger = logging.getLogger(__name__)
+
+
+async def animate(export_filename, file_sequence):
+    """
+    20-40% slower than imageio :(
+
+    :param file_sequence:
+    :return:
+    """
+    logger.debug('animate sequence of files')
+    logger.debug(file_sequence)
+
+    with Image() as gif:
+        for file_name in file_sequence:
+            with Image(filename=file_name) as frame:
+                gif.sequence.append(frame)
+        gif.type = 'optimize'
+        gif.save(filename=export_filename)