Simple and effective arm with negative curvature

Have you come up with a good Moho trick? Need help solving an animation problem? Come on in.

Moderators: Víctor Paredes, Belgarath, slowtiger

Post Reply
User avatar
Víctor Paredes
Site Admin
Posts: 5646
Joined: Wed Jan 26, 2005 12:18 am
Location: Barcelona/Chile
Contact:

Simple and effective arm with negative curvature

Post by Víctor Paredes »

Hi, I just discovered a technique which works great to create very simply arms which bend perfectly.

(You will need Fazek's curvature tool to can add negative values on curvature)

Image

Here you have a file to see what I'm talking about
http://www.mediafire.com/?gmkqmzyzzu2

Now a little tutorial

- First create a very basic arm/leg with only six points
Image

- Then animate the bone on any frame, you should obtain something like this
Image

- Now, on the same frame, select a middle point and give it a negative curvature, for example -0.1. You will obtain this, a very good looking arm :roll:
Image


Now, how to make it in movement, you must to animate curvature each time you bend the arm. As curvature is animated, you can have a simply arm which can turn for both side without problems.
I know it requires to be always working on curvature (but you can copy and paste frames always), but maybe a script could animate that curvature automatically depending of the angle of the bone, what do you say?

Anyway, negative curvature is great, you should experiment with it for some other shapes.
thehj
Posts: 19
Joined: Thu Sep 09, 2010 10:47 am

Post by thehj »

awesome! thank you very much

I'm afraid the script is a bit old and replacing the file may cause some errors, so what can I add to lm_curvature.lua to make this work?

edit: it's working now, thanks
jessica951
Posts: 118
Joined: Mon Apr 25, 2011 2:04 am
Location: USA
Contact:

Post by jessica951 »

Do you know how to bend at the shoulders?
Post Reply