Simple and effective arm with negative curvature

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Simple and effective arm with negative curvature

Postby Víctor Paredes » Fri Dec 18, 2009 1:21 am

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.
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Postby thehj » Fri Sep 10, 2010 12:02 pm

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
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Postby jessica951 » Mon May 02, 2011 2:35 am

Do you know how to bend at the shoulders?
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