combustion for stereo paint

[jbills_vb]

looking for a better solution for painting in stereo. shake’s quickpaint just ain’t gonna cut it, and silhouette is great but raster isn’t always something I can use, generally need vector to keep the editability and project data intact.

wondering if combustion could be an option – I’ve not used it in some time.

specifically, when you’re painting, can you group paint strokes and offest them (pan them a few pixels in X?)

or can you flatten strokes some other way and then just move them over?

also, would it be easy to maintain a left and right side in the same project, as in, painting on one side, then just creating 2 composites (L and R), copying and pasting paint strokes from the side already completed, and then do the grouping and stereo offset based on object depth? that’s basically the shake workflow I’m using currently.

1 last thing- is it possible to corner pin a clone source and is that easy to set up? like, can you use a composite as a clone source?

thanks in advance
-j

[viking jonsson]

Hey,
“1 last thing- is it possible to corner pin a clone source and is that easy to set up? like, can you use a composite as a clone source?”

Whatever your clone source is make a layer out of it.
Set the comp to 3D mode & set the layer to be 4 korner.
You can reference this whole branch from anywhere else now.
Paint has the option to reference comps,layers,footage etc.

Yes,You can group(CTRL+G) paint strokes & offset them.

no flatten/rasterize option.You’ll have to render.

b

[Anonymous]

cool, sounds like I need to throw a shot at it from the project i’m doing, see how it holds up.

thanks for confirming my hunch.

[amit Dang]

Here’s the thing. While all these methods are viable, what your missing is the painting in 2D will look 2D in a 3D stereoscopic scene. if you use the offset method you will need to be careful that the area that you paint doesn’t flatten out in stereo. This usually can be compensated for with some very careful painting. Try blending the edges and seeing if you can fill the area with a 3D peice of geo that has 2D paint strokes applied to it and re-rendered with 2 stereo views.

[Anonymous]

nah, we’re not using a toed in method of stereoscopy, so since I have 2 source plates (L+R) it’s truly simple stereo painting, just need to offset the clone strokes the right amt to grab from the exact same place on both plates. All that’s needed is carefully offsetting the paint differently if painting BG vs FG, depending on where the screen plane lies. But no need to paint on geo.

already doing it in shake, it’s just clunky.

[amit Dang]

You have to be careful and check your image in 3D with anaglyph often. You can do this with a simple anaglyph node in Nuke or if your using Shake, a simple COPY node with the left eye feeding the FG and right eye into the BG (then GB in the channels)

Also this is a handy stereo painting utility called “StereoPaint ESP” and its free.
http://zenratai.com/software/stereopaint_esp3/index.htm

[Eero]

I used Combustion to paint beauty/cleanup on a 3D job. I would say that Combustion’s vector paint system made the job pretty easy about half the time. Those were the times where the r/l difference was a simple x y move.

However, sometimes there was a rotation or scale difference that was hard to replicate by moving the paint strokes. Also, sometimes the difference would change over the course of the shot, based on the action and perspective.

Overall, I’d say Combustion is a good tool for a paint-heavy 3D job – at least until Nuke 6 comes out and will hopefully have a Combustion-like paint system.

[Author]

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