IK explanation in C4D

[Per-Anders]

ah ok, it sounds like you had the bones fixed and switched on (little green tick marks next to them in the object manager). what you need to do is start off by switching off the bones,


two ways to switch them off, if you've already "fixed" them once,do this by selecting the bottom bone, then right click on it and choose reset (this should switch the bones off, it may ask you do you want to apply this to the children).

if you've not fixed them, then simply select all the bones and in the Attributes Manager under the basic tab uncheck the "Enable" tickbox to switch all the bones off.

then place the bones with your object, and right click on the bottom bone and go "Fix" and then ok the "Do you want to apply to children" box that comes up, your bones will then be activated and fixed in position without distorting the mesh.

with cinema the structure that most work with (and seems to work best) is

Null
-Null/mesh
--More mesh type stuff
--etc...
-Root bone
--Child bone
--etc.

hope that this got the problem fixed, have fun :)

[f3rry]

wow, thanks.

So I can't setup IK chain without bones (just gemetries), can I?

Because.... It worked when I tried, but I can't control the constraint, so it's twisting around everywhere.

Thank you all for this beautiful forum....

[LucentDreams]

you can with geometry, but the spinning is likely cause by lack of an upvector.

[JIII]

if your using soft IK things are going to be different and a bit harder to set up stably with out problems.

You should have no spinning problems if you are using only hard IK.

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