Corrective Blendshapes: Pro tip, Using Extract Deltas Free Plugin (Maya) Vid 3/7
Using Extract Deltas a Free Plugin by Ingo Clemens for maya to automate corrective blendshapes with skeletons. I now use Ingo's updated SHAPES tool which is a much better way of doing this now. http://www.braverabbit.de/playground/...
Big Buck Bunny Model copyright Blender Foundation.
www.bigbuckbunny.org
License: Creative Commons Attribution 3.0
1. Click on the skinned mesh in the pose we want to fix
2. Run the Copy icon (icDuplicateSkin) icon
3. Move the new mesh away from the original
4. Sculpt the corrected shape
5. Select the skinned mesh then the corrected shape and click the ExtractDeltas icon.
6. move the new blendshape away from the original
7. Select the new blendshape then the original and create a blendshape with "front of chain options"
8. Test the blendshape
Couple of things to remember with this plugin. It seems to need a clean mesh to work on, no history except a tweak node, and bindskin node. Other nodes can cause issues, so create all the corrective in one go and hook to a blendshape last.
*Corrective Blendshapes without a plugin Note
Beware there are a number of tutorials claiming that this can be done without a plugin using the parallel mode in the blend shape options and by combining two blendshapes with a -1 and +1. This seems to work on the surface but falls down when parent joints are rotated above in the chain. Instead use the plugin.
Michael Comet's Pose Deformer also does a similar thing though in quite a different way, I've only found this for http://www.creativecrash.com/maya/dow... though and not Mac as it has not been officially updated for many years.
Free Plugin: ExtractDeltas by James Jacobs recompiled by Ingo Clemens
http://www.braverabbit.de/playground/...
Presenter: Andrew Silke (Avatar, Harry Potter, Gravity)
Website: www.create3dcharacters.com
Facebook Daily Blog: / create3dcharacters
Software: Maya 2014