IK Problem

[berniebernie]

i broke your rig/model (the pistons which worked) because you had transforms that weren't right (if you rig a model you'll need to freeze the scale which should always be uniform like x1.2 y1.2 z1.2).. also ik handles and limit transforms is a recipe for disaster.

Since you're doing only mechanical (non-soft) rigging, you can skip the bones and use constraints only I guess:

http://mlkdesign.online.fr/dump/righelp222.ma

most elements are simply parented, aim-constrained on one axis. You can drag the base of the object to move it around.

I suppose you could use ik handles to have a better 'elbow movement' but you can work around with constraints.

[paradoxvfx]

Thank you very much!

I froze the attributes on each part but I can't figure out how this constrains work (axis, angle ... ... ...)
Could you give me a little description on this please?

regards,
para

[paradoxxl]

I think I understand the aim constraint now. I rebuild the object with frozen attributes.

Here is the preview video (http://www.youtube.com/watch?v=yp4EGMZrS7Q)

I still got a few questions:
-When I rotare the whole arm, it just works from 0-180 degrees. When I let it rotate more, it won't move correctly.

-The first bar has an offset in the aim constraint settings. This basically works but how can I achieve a "stretch" (more rotation) when i move the locator away?

-I built the cable with this tutorial (http://www.creativecrash.com/maya/tutorials/dynamics-fx/c/how-to-make-a-realistic-cable). Can I let collide it with the base of the arm?

regards,
para

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