CGTalk - how to make this animation?

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Marty Martio

01-24-2003, 08:20 AM

can anyone tell me how to do a animation which is about to open a paper-lid of a instant cup noodle with fingertips of a hand? what i'm trying to do is put a cluster on those CVs on the tip of the paperlid (where the thumb and index finger hold) then point constrain a locator to that cluster so i can do some weight trasfering with the hand. i also got a bend deformer on the paper lid (the lid rolls when you open it) but the problem is the cluster doesn't go with those CVs on the tip of the lid when i bend the paper lid. how do i make the cluster stay on the tip of the lid when it rolls? or is any other work-around? this is a bit urgent and any idea will help. thank you all for your time to read this.

MDuffy

01-24-2003, 07:08 PM

Your bend deformer is moving the points under the cluster. A cluster is basically a transform node that moves points by the delta that it is moved. I don't think there is any way to get the cluster to move with the points that are moved by a bend.

You have a couple of options:

1) animate the lid, and then match the finger to it frame by frame. Or animate the finger and animate the lid to the finger (with bones and clusters driving the lid instead of a bend deformer.) Tedious, but it doesn't require any special setup.

2) Animate the lid with a skinned bone chain, that has IK applied, and constrain the IK handle to the fingers.

Anytime you have a character interacting with a flexible object, it is a pain in the butt. Annoying, but true.

Good Luck,
Michael Duffy
mduffy@ionet.net

uschi

01-24-2003, 09:23 PM

have u tried it with a wire deformer? just for deformations
and the rest with bloody hand work ?

Marty Martio

01-25-2003, 02:26 AM

thanks MDuffy & uschi for all your time. i appreciate that very much. i'll try all the options above and see how it goes. thank you.

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