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fft deformer problem
As part of an anatomic model, I have a model that I would like to deform using a FFT deformer. When I add a FFT essentially with only two points in the x and z planes but approximately 20 in the z plane and try to use it to deform an object, it does not keep the object within its borders. It acts more like a magnet with some bending, but does not keep all points within its distortion. I have made sure the original object is centered on the origin and the FFT is slightly larger than the object. The original object has lots of points, so should be able to be distorted.
If I export the object to XSI (as a obj file) and use XSI’s lattice deformer, everything works out perfectly. I would like to be able to do this in C4D. Do you have any suggestions? Thank you.
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3 Replies
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This behavior is normal. C4Ds FFD deformer works based on the proximity of the vertices, not the cross-section. To get similar behavior as in XSI, you will have to add many more subdivisions or use different methods entirely (like the muscle deformer in MOCCA for instance).
Mylenium
[Pour Myl
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Thank you for the followup. XSI’s lattice deformation tool is much easier for me to use than C4D’s FFD deformer. XSI is fairly nonintuitive on many things (materials, cloth, an overcomplex render tree, etc.) and less stable than C4D, but its tools are more useful to me. In XSI, the lattice deformer, extrude along spline, ability to lathe along non axis lines, the ability for lathe and extrude to work on polygons without nurb objects, and several other features are much more powerful than C4D’s equivalent tools. In XSI one doesn’t need to select points in a particular order to avoid clicking near the arrows. I’m hoping one day that the best of each program gets combined into one powerful and easy to use application.
I tried adding more x and y points to the ffd in C4D but it wasn’t precise enough for my needs.
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Mylenium:
Tthank you for your comments. I guess I should go back a step and ask your opinion for the general method of modeling. What I want to accomplish is similar to https://www.turbosquid.com/FullPreview/Index.cfm/ID/327833If you look at the small intestine and large intestine, how would you model these in C4D? The ways I can think of would be:
1. start with a sweep nurb and then make it editable and play with ring edge selections for scale, rotation, etc.
2. start with a small part and make a series of extrudes and play with scale, rotation, etc.
3. make a linear model of the small and large intestine and add a FFD deformer
4. make a linear model of the small and large intestine and add a series of deformers
5. make a linear model of the small and large intestine and add a skeleton and manipulate the bones. At this point I am leaning towards this, but I would appreciate any suggestions you might have. Thank you.
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