CGTalk - Twisting in flow along path/curve

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wireFrame

04-29-2003, 10:00 AM

Any idea why this operation twists in Maya?

Get an object and deform it using a curve (like a binding a train to its tracks). You'll encounter some twisting phenomena when you modify the parameters/position of the object (bounded by the deforming lattice) along the curve/path.

Oftentimes there are two twistings that occur.

Any solutions to this problem?

wireFrame

04-29-2003, 11:32 AM

Here's a sample image of the problem:

Hugh

04-29-2003, 01:12 PM

It seems to be doing the twisting when the curve is completely vertical...

I'm assuming that it always wants to have 'up' the same way, so when it goes through vertical, 'up' spins around quite quickly....

Just gonna have a closer look in Maya...

Edit: Hmmm... I can't seem to reproduce the problem here.... Which axis did you initially create it on?

2nd Edit: Okay, reproduced, but I'm stumped.... sorry...

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