rope ball

Become a member of the CGSociety

Connect, Share, and Learn with our Large Growing CG Art Community. It's Free!

Thread Tools Display Modes
  05 May 2013
rope ball

Hello there,

I wondering, how to animate a rope ball, I have a straight rope, and my character starts making a ball shape with the rope. but not sure how to create this type of animation.

please see the image for reference, doesnt have to be exact, just to make a ball with a rope.

Thank you for everything.
  05 May 2013
Create a curve with lots of cvs for the rope then do nHair:makeSelectedCurves dynamic. Set pointLock to None on the created follicle node, and enable self collisions on the hair system. Set the hair width to the thickness of your rope. Create a mesh to roll the string onto and do nMesh: make passive collider. Select the end cv of the rope and the mesh and do nConstraint: point to surface to attach the rope. Then rotate the mesh to wind the string onto it. You could also grab the rope by using additional nConstraints. Note that you can animate the attachment by animating the enable on the constraint...(max distance constraints can be useful for this), like a hand grabbing and releasing. I would make friction on the rope high... perhaps 2.0. Perhaps even a little stickiness might be of use.

Due to the number of cvs you will likely need to make the stretch/compression resistance high and increase substeps a bit. As well you might want to use some bend resistance and a little damp if it is a stiff rope.

Note that in order to best handle twist without flipping (in terms of texturing) on the rope as it animates you may wish to do convert: pfx to poly on the hair system to create the geometry, instead of extruding down the curve. Assign a brush to the hair system first and make global scale on the brush 1.0 and brushType = mesh. You can then adjust the cross section on the brush so that it is not just a triangular tube. (without a brush assigned the hair system only outputs triangular tubes for each hair)

Last edited by Duncan : 05 May 2013 at 06:30 PM.
  05 May 2013
Thread automatically closed

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
CGTalk Policy/Legalities
Note that as CGTalk Members, you agree to the terms and conditions of using this website.
Thread Closed share thread

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Society of Digital Artists

Powered by vBulletin
Copyright 2000 - 2006,
Jelsoft Enterprises Ltd.
Minimize Ads
Forum Jump

All times are GMT. The time now is 07:52 AM.

Powered by vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.