Animation problems
by Brendan Watts
on
May 13, 2008 at 2:41:49 pm
Hi all,
I'm relatively new to Cinema 4D and I'm having some trouble with a project I'm trying to complete:
1. I'm trying to get a cube to 'walk' on it's bottom edges. I can't work out how to do it. Is there anyway to set up two axis on the one object so I can swing them around alternately? How can I do it otherwise?
2. I have modeled a mobile flip phone - the front and the back are individually modeled. I want to make it walk by sliding it's front cover forward along the ground and and then pulling it's back half up to it's front cover. I need the two parts to stay connected at the 'hinge' (even though they're two separate meshs) and I need one part to stay where it is on the ground while the other moves away from it. I've tried playing with IK tags unsuccessfully. HELP!
Thanks for your time guys. Any help you can offer me would be much appreciated!
Re: Animation problems by randy johnson on May 14, 2008 at 7:01:29 am
Your ik test looks fine.
I set it up with out any joints and got perfect results.
I placed "front" in a null. I put that nulls axis where i wanted the pivot, in the is case directly on the hinge. Then I created a new null(controller) and added user data slider. i added an expresso tag to the controller null and dragged both controller and the front null into the expresso. Then in the controllers red box i selected user data: front null. then i attached that to the front nulls blue box: coordinates:global rotaion:P
and then you have a controller and can easly set up a walk cycle. you can add a slider to ik the same way but this is the simplest way.
If you are going to be rigging things up you need to set up the higharchy and connect more pieces. The way the model is now is too much to try to rig.
Re: Animation problems by Brendan Watts on May 14, 2008 at 1:41:15 pm
Thanks Randy. I don't think that really solves my problem though - your method (as I understand it) allows you to have control over the rotation of the front and back of the phone but does not allow you to keep the ends of the phone glued to the ground, that is to say, the front of the phone has to stay where it is on the ground while the other part moves up to it.
My IK test worked? When I play it out the initial position mysteriously changes...
Ah well - thank you very much for your time. I appreciate it.
Re: Animation problems by Lennart Wåhlin on May 15, 2008 at 11:42:28 am
I f I understand your project correct, what you want is the "Free" (donation posible)
RollIt plugin by eggtion. It can use the geometry of an object to make it roll on any
surface.
