Rigging

A place for beginners to start

Rigging

Postby kevink on 12/12/2014, 5:50 pm

Hello,

I'm new to the Forum and this is my first post. I just waisted several hours trying to rig the hinge below with no luck. The hinge is from the new Motions Design 2 Pack and I'm using Element 2.02. I would like each joint to bend and move and correspond with the others like a robotic arm. I'm sure that i'm overlooking a simple solution but stumped at this point.

Thanks, Kevin
Attachments
Hinge6.jpg
kevink
 
Posts: 16
Joined: 07/23/2014, 5:59 am

Re: Rigging

Postby star+circle on 01/25/2015, 12:50 am

Looks like it has to be done by duplicating the model, hiding parts by material and rigging the parts with group folders and aux animation. See attached. Note that you have to align the group origin point to the point you want the piece(s) to rotate around in each case.

For some reason some parts of the model span the entire model (in this case the bolts), so you have to hide them altogether, and if you really need the bolts add them from the hardware section of MotionDesign. Anyways, you can get it to work this way.

If someone knows of an easier solution, I'd definitely want to hear it.

For a simpler case (just one hinge rotating in one direction), you can use the animation engine and two positions of same model in different groups. See
viewtopic.php?f=4&t=123151

But adding more than one rotation will mess that other method up.
Attachments
Rigged Hinge.aep
Motion Design V2 hinge rigged
(902.17 KiB) Downloaded 332 times
star+circle
 
Posts: 935
Joined: 12/6/2014, 3:07 pm
Location: Finland

Re: Rigging

Postby kevink on 01/26/2015, 6:14 am

Thanks for the response. Your right! the problem is adding more rotations messes up the first rotation. I would somehow like to get all 3 rotations linked together.

Kevin
kevink
 
Posts: 16
Joined: 07/23/2014, 5:59 am

Re: Rigging

Postby star+circle on 01/27/2015, 11:47 am

Hi Kevin, I was probably unclear. The example project I attached in the previous message does work correctly. It is done so you can properly control all three pieces separately. (Only the bolts are missing as they are all the same material so can't be separated for the three arm sections.)
star+circle
 
Posts: 935
Joined: 12/6/2014, 3:07 pm
Location: Finland

Re: Rigging

Postby kevink on 01/28/2015, 7:56 am

I want to make a robotic arm where one joint pulls off of the next.

https://www.youtube.com/watch?v=W_gxLKSsSIE

Plexus 2 does it well. It seem that I need expressions to link the bends together.

http://aescripts.com/plexus/

It appears to be a little more complicated than I thought.

Thanks, Kevin
kevink
 
Posts: 16
Joined: 07/23/2014, 5:59 am

Re: Rigging

Postby star+circle on 01/29/2015, 7:27 am

You mean inverse kinematics where pulling the last part of the arm moves the other ones accordingly? Yes, that's more complicated for sure and needs expressions.
Perhaps DUIK tools can be used to create the underlying "bone" structure and link the E3D parts to it. It does 3D inverse kinematics of this kind. Haven't tried integrating it with Element yet. Might work.
http://duduf.net/?page_id=151
star+circle
 
Posts: 935
Joined: 12/6/2014, 3:07 pm
Location: Finland

Re: Rigging

Postby kevink on 01/29/2015, 11:58 am

Inverse kinematics...I learn something new everyday. Thanks I'll give it a try.

Kevin
kevink
 
Posts: 16
Joined: 07/23/2014, 5:59 am

Re: Rigging

Postby star+circle on 02/21/2015, 1:28 am

Looks like there is a better way to do this already built in. As Dustin pointed out in another thread, there is an "object mode" that separates all the pieces of a model. So, rather than using material to separate the objects, they can be fully separated in object mode.

http://www.videocopilot.net/docs/elemen ... ene_setup/
star+circle
 
Posts: 935
Joined: 12/6/2014, 3:07 pm
Location: Finland


Return to After Effects Fundamentals (Beginners)