# python-based animation software

# describe an animation using python code then render it to a video, gif, etc

# tl;dr we draw PNGs and assemble them with ffmpeg

# data model:
#     source - input media such as a still image or a video
#     sprite - an instance of a source's media

#     animation - description of how a source is used in the video


# example video of the dvd bounce logo

from pyanimate import Video, \
    Source, ImageSource, \
    Sprite, ImageSprite, \
    Animation, ShowAnimation, HideAnimation


# the video is the canvas that we'll animate objects on top of
video = Video(framerate=30, width=640, height=480)

# a Source is a piece of media that we can include in the animation 
# there should not be any reason to create two Source()s of the same input media.
logo_img = ImageSource("dvd.png")

# a Sprite is an instance of a piece of media. They contain contextual information such as the position of the sprite
# on the canvas. 
logo = ImageSprite(logo_img)   #, position=(0, 0))


# now the sprite appears at 0,0
video.add_sprite(logo)


# Animations are things that happen to sprites. Sprites are hidden by default so you need a ShowAnimation() to
# make them visible
logo.add_animation(ShowAnimation())

# Now lets make the logo move. In this case, we just move it diagonally
# logo_bounce_1 = Animation(
#     # path=xxx,
#     # filters=xxx,
#     # transforms=xxx,
#     # ...
#     after=None,
# )

# Animations are added to sprites. When the video is rendered, animations are applied to the sprite in each frame.
# Animations begin on frame 0 by default, unless they are delayed by setting a start frame=... or after=....
# logo.add_animation(logo_bounce_1)


# output the final thing
video.render("output.mp4")
# video.render("output.gif")