View Full Version : stretch ik system like !

05-15-2009, 02:12 AM
hi every one !

I m relately new in lightwave and i have just made my first small character !
now i wan't to make a advance rig for it like stretch a squatch rig so i started to do some test for a reverse foot rig with joint !
my reverse foot rig work well but it doesn't stretch now !
my question is how can i acheive this type of rig with joint i have read some where it is very simple to making !

if some one have a ressource or what else i will be very glad
thanke you very much !

Stunt Pixels
05-15-2009, 02:26 AM
Hey, great character for a first go... Sorry, no idea about rigging (I hope to do that properly over the next few months), just wanted to say cute character. Lots of possibilities...

05-15-2009, 02:35 AM
thank you for the comment !
i appreciate
i have a little experience on other 3D package like blender !
i think lightwave is very different for the modelisation ,
and i prefer blender appreach for the rigging now but i just starting
to rigging with lightwave so i will see !

05-15-2009, 02:44 AM
i just find what i want to do on vfx cast

i don't know if it is same joint who have the ik system and the stretch system !

when i make my joint chain and i apply my ik on, i can't stetch them
any more with a null object !

05-15-2009, 06:23 AM
Nice video picpic, ty for pointing out.

05-15-2009, 12:09 PM
You know there are free tutorials on NewTek's Lightwave site.
I *think* William Vaughn did a tutorial for Inverse foot rig using joints, but couldn't find it offhand.


05-15-2009, 01:43 PM
thank for this information
i have already seen i think all those tutorials many time in fact.
The rig how mad William Vaughn doesn't work for me.
i have made mine with joint i apply him a ik system so when it is apply the joint rig couldn't stretch anymore like i want !
in the video William Vaughn doesn't show if the rig can stretch on the upper leg or on the knee !

i keep looking for testing and on the web !
i have just find a complexe system on web with expression but i think now it should be a lot more easy with new joint system.
i think i need no more to code expression ?:agree::agree: right or not ?

05-18-2009, 07:48 AM
ok so i have mad a test of what i wan't to setup !
but i think it still conplicated to make !
i have to serie of bones actually !
i make a ik system with bones and i make joint rig who are parented to the proper bone the system is ok i think !
this method was inspire by the man candy rig who mas made in blender "for the peoples who knows it "
but i still thinking it is not a good method !

So my question is "who can i make a joint rig ik system who still stretch like in the file ?

thank you very much for attention !

ps i hope i m clear !

05-18-2009, 01:48 PM
First... your rig is using IK on multiple channels, it wont work properly... u need planar IK with a parental offset for the chain... check out the make joint chain tool... thatll get u going in the right direction for starters...


To do the stretchy IK reliably, youll want to clone your rotational IK chain, and add positional IK on the bones Z channel... then reference the Z positions back on your original chain using a constraint "such as same as item", then you can blend beltween regular IK and stretchy IK.

05-19-2009, 02:35 AM
hello every-one !
first thank you very much rebellhill for the explaination !
i tryed your method but it is not very concluent for the moment !

i don't understand how to reliable the ik stretchy !

i'm very sorry to abuse ! if you have a test file i will very very very glad !

i know i know " je suis un gros boulet 8~" " you can traduce it if you wan't
i won't blame you anyway !

thank you !

05-27-2009, 12:30 PM
check here... the second tutorial video shows you how to do the stretchy ik you're after.


05-28-2009, 11:33 AM
The master has spoken!


05-29-2009, 06:56 AM
thanks for the tut i 'm going to see it this week end !
if it will become a tut series i definitely buy it !
i hope it will be sell soon !

So when i see your rig technic it remind me my mediocrity !