Illegal Patch in Max 3.1?

[hartog]

I tried to use the World space patchdeform modifier to attach a standard cilinder to a spline based model(created splines and added a surface)
My first attempt succeeded, my second attempt, using another spline based model, failed, Max then showed a message "illegal patch"
How did I create an illegal patch and how can I "legalize" it?

Hartog

[lsebo]

This must be because you have tri-patches in your patch object. There is a small note about this in the help file, that patchdeform doesn't like tris.

So the solution is to try to change all tris into quads somehow.

I think this tri misery is because the U-V axis' would intersect there, or something like that.

hope this helps,

Laszlo Sebo