Sketch and Toon hand drawn preset

[Adam Trachtenberg]

Here’s a post I clipped with some good info. on controling flicker. Unfortunately I didn’t clip the author’s name, but I think it was Tim Clapham:

“if you need strokes, and have flicker issues, you best bet is careful tweaking and lots of tests. the options to best tweak are:

1)Join limit
2)START + Angle
3)filter
4) END + length and angle

These all control how the Strokes are created from the lines detected in terms of angles and such. It’s a sort of guessing and test game figuring out the ideal angle for the optimal results. While a test on a still may show no difference between a single degree angle, it could make a huge difference in an animation between a line joining another line or not.

Also, be really careful of the combine function in the lines tab of the render settings and sketch tags. This setting combines lines of different detection methods with the same shader. While this I once thought was always a good thing, I’ve since discovered a lot of popping is cause by a line from the outline meeting a line from the folds making a single stroke when at just the right angles when using combine that of course wouldn’t if not combined. this can cause popping as well.

If your using distort, be really careful to test whether closing strokes will work or not, neither closing or opening is perfect so its really dependent on which is less worse in terms of popping. This isn’t a huge contributor to flickers and pops, but it can be on occasion.

A good piece of advice is to also try to avoid strokes that don’t match on both ends. like a stroke that is thick on one end and thing on the other. The less contrast before the start and end of a stroke, the less distinct two unconnected strokes will show.”