'tweening with OpenToonz - How to use the vector inbetween feature in OpenToonz

#1 rule: You can only 'tween with a vector level

This video shows how you can use the inbetween function in OpenToonz. This takes 2 vector drawings and adds a number of drawings in between, transforming the lines/shapes from the 1st to the 2nd (transforming lines in the order they're drawn).

First I run through the basics of inbetweening, then I explain how you can use the built-in 'Guided Drawing' feature to ensure that the correct lines correlate to each other and also how you can use copy/paste/edit to manipulate your lines/shapes.

#1 rule: You can only 'tween with a vector level

I try to speed through my explanations as quickly as I can, speeding up the drawing where necessary, so you're not just watching me draw, but there's a lot to get through and I try to give out as many tips as possible along the way, but if you want to skip through the video, here's the list of topics I cover.

Contents:
00:00 'tweening intro
00:23 Comparing hand drawn vs animation tool's mechanical look
01:16 Getting the UI ready for inbetweening
(Showing/docking the Level Strip & Changing thumbnail size)
02:39 Quick run through of the inbetween method
(inc. Exposing level strip frames in the timeline & using swing for ping/pong play)
06:17 Looking at the 4 interpolation options
07:57 Example showing that lines must be drawn in same order
09:31 Technique1: Using guided drawing to draw the lines in order
12:54 Technique2: Using copy/paste/edit to keep the lines in order
14:19 Example: Animate an opening door (from 2 simple drawings)
15:56 Final example showing light rays coming through a forest

Shift and Trace in the OpenToonz help document:
http://opentoonz.readthedocs.io/en/la...

#OpenToonz #tweening #vectors

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