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I asked the same question to Syflex in July 2007 and this is the reply I got from Gerard at the time. I havent’ had time to test Syflex in XSI v7 but apparently a couple new things made the cut this time?
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There are many functionalities on Maya that still don’t work well, or are not necessary in XSI, so we haven’t ported them in XSI. This is the case for:
1- Live mode:
Quite difficult to use. The same thing can be done by playing the animation and saving the current state
2- Info command
In fact, doesn’t return very important information. Except the total mass, but you can easily compute it.
6- Magnet force
This is not useful anymore, can be replaced by either soft pins or skin
7- Hair
Doesn’t work well for the moment. Needs more research.
8- Self-envelope
Yes, this is self collide. The goal was to make it more flexible in XSI, by allowing to have more than one self collision force
For instance: to have different parameters on different areas of the cloth
9- Self Damp
This has been removed, it was a mistake. Not used anymore.
11- Reusing nodes (gravity):
This comes naturally in Maya, but it is very risky, and we recommend not to use it.
Only safe to use for a limited number of forces like gravity and damp.
12- Stress:
Not really useful, we need to give a better stress info.
Now, there are a few things that will appear in the XSI version soon:
4- Wrinkle map (although it doesn’t work very well in Maya, we need to improve this)
10- Self Friction
And edges on collisions
And finally, there are functionalities that we don’t like, because they are not implemented in a good way, like attenuation. We need to find a good way to add something equivalent in XSI.
Sometimes it happens in the other way: we developed the zipper force in XSI, and we need now to find a way to implement it in Maya (a bit less easy).
This is why it is always difficult to compare both versions. I don’t think that the Maya version would really give you more. We try to keep them at the same level.
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Gerard Banel
Syflex LLC
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