Week 4: Camera animation, interpolation in GLSL, and a single Timeline!

What did you do this week?

• Managed to implement a single Timeline using the Container class. So, instead of having two classes: Timeline and CompositeTimeline, now the Timeline can have multiple Timeline objects and controls them as in the code below
   

  main_timeline = Timeline()
  sub_timeline = Timeline(actors_list)
  main_timeline.add_timeline(sub_timeline)

   

• Implemented the HSV, Lab, and XYZ color interpolators in GLSL.

• Added support for animating two camera properties: position and focal position, which can be interpolated using any general Interpolator.
  

• Allowed all actors inside all timelines to be added to the Scene automatically when the main (parent) Timeline is added to the Scene.

• Fixed the PlaybackPanel, added a counter to display the animation time as in the video above, and added an option to attach a PlaybackPanel to the Timeline.
   

  main_timeline = Timeline(playback_panel=True)

   

What is coming up next week?

This week I will do the following:

• Start Implementing slerp interpolation using quaternions in both Python and GLSL. And use slerp to apply camera rotation.

• Add tests for the previous work.

• Make a PR to merge the non-shader-based version of the Timeline.

• Test how shader attributes can be used to hold keyframes for each vertex and benchmark it.

• Study ‘colormaps’ and implement some ‘colormaps’ in GLSL.
   

Did you get stuck anywhere?

• Uniforms don’t maintain their data after shaders are unbounded and another uniform with the same name in a different shader is set.