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vector
03-27-2012, 02:23 AM
Hi:

I keep my rigging fever so another question.

Could be used IKB for spine, arms and head and combine it with "classic" IK for the legs? or the most important question: Is it worth to combine them? Is it better just IK for the whole rig?

Vector

RebelHill
03-27-2012, 03:56 AM
Yes, ofc. IKBs biggest weakness is that although it gives IK posing, there's no actual handle for chains to "goal" to, so with the keyframes added on items, you just get FK interpolation... hence the sliding feet problem of IKB.

If you're wanting however FK animation on items, as is often common for arms, spines, etc... but want the IK posing for a faster workflow, then IKB will work just fine.

The only thing ull need to do is breakout your rig into the two parts. So the upper body will have to be parented to a null, with that null and lower body parented to some other root item... U can then apply IKB to just he upper body leaving the lower to be used another way.

vector
03-27-2012, 04:02 AM
If you're wanting however FK animation on items, as is often common for arms, spines, etc... but want the IK posing for a faster workflow, then IKB will work just fine.


Thatīs exactly what I want :thumbsup:

I will take it a look

Thanks, thanks and thanks again, RH

My hero :bday:

Vector

Surrealist.
03-28-2012, 12:44 AM
IKBooster was originally intended as an aid to IK

http://www.youtube.com/watch?v=ZnUHGFkFah4&feature=related

This is something I am revisiting after a while so I have not set up my entire rig yet. But here is the basic set up.

You set up your IK rig as you would with Goals (null objects) positioned at the hands and feet as usual. Then simply right click on the Goal object and "Apply IK Booster". Do this for each goal object. Now these objects are considered as a part of the entire rig when IKboster is active. When you click on the hand or foot joint it selects the goal object. This also works with IK/FK blending. Only now with IK Blending set to 100%, it reverts back to full IKB control on those limbs that have the setting. This would be most useful for the hands I gather.

But you could have IK off on the upper body until you need it and then switch on IK for the hands in those special cases.

The added benefit is that you can now also have the ease of use of IKB along with an IK rig and all of the tools associated with IKB. Pole targets and Targets also work with IKB. Basically it is designed to recognize what other controllers and limits you have placed on the rig.

Disclaimer is that I have not set up the entire rig yet. But I am very familiar with IKB so I am sure it will work out. But we shall see. :)

Surrealist.
03-28-2012, 11:16 PM
Also addendum. I forgot, because I learned how to rigg initially when you could not have bones be Goal objects. This makes setting up for IK booster a little easier. But you want to change the controller for the goal to a move type.

Then there is one small but significant hitch. That is the fact that you have to also set the controllers for the two IK joints to key frame control or the IKB rig does not let your control them on those channels even when FK Blending is used.

The cool thing is as an animator it gives you a rig that you can truly re-rig on the fly.

On the feet. I have actually seen some animations that looks fairly nice using the Bind technique. (which also works for the hands).

http://www.youtube.com/watch?v=UHbPcG6zD94

http://www.youtube.com/watch?v=L7hXZiO3iww&feature=relmfu

I had gotten fairly proficient at the bind technique but I lost interest due to the fact that it seemed to stiffen the animation. Though for some styles I have seen it work quite well.

There is of course all kinds of controversy over this subject. But all of that aside here is a thread where some techniques where shared:

http://forums.newtek.com/showthread.php?t=86493

vector
03-29-2012, 12:17 AM
Thanks, Surrealist... a lot of info to process :) The first time I tried IKB I wanted an entire rig, but bind was a wall too high. As you say IKB as an aid to Ik might make me trust again in it... I will try

Vector

Surrealist.
03-29-2012, 04:46 AM
Thanks, Surrealist... a lot of info to process :) The first time I tried IKB I wanted an entire rig, but bind was a wall too high. As you say IKB as an aid to Ik might make me trust again in it... I will try

Vector


Cool.

Some more links I am digging up:

http://www.youtube.com/watch?v=1Wu0oD7aWoU

Keep forgetting how many great tools there are associated with IKBost. If nothing else it is a nice set up to have a standard type rig with IKbost because of the amount of tools available. Click and drag controllers area also nice and handy.