reactor: att rope to rigid bodies?

[mouj]

Hey there !
Have you tried using the Attach-To-Rigid-Bodies Modifier ? i think that's how it's done when you need to attach cloth or rope or anyhting to rigid bodies.

keep us posted.

mouj

[jason-slab]

yeah i've tried it, it connects the rope to one end (the balloon for example), no problem, but if i apply another Attach-To-Rigid-Bodies (to att the tag to the rope), it cancels out the first.

i've tried adding a poly select modifier to my rope then the second Attach-To-Rigid-Bodies, but with no luck

|jason

[Aldaryn]

Once, the following worked with a flagpole, and a really huge flag bounded together with multiple ropes. (It was simulated totally in Reactor...)

Your ribbon is should be a spline, with a nice detail created with Normalize Spline modifier. (Sorry for the details, but I don't know your setup exactly)

This object will be "rope" type, (Reactor Rope modifier on it, "Avoid self intersections" should be on, and the "Rope Type" should be "constraint", to save some calc time)

The baloon, and the tag is a "Rigid body" object.

After creating this setup, and the objects alligned, placed to the starting positions, selct the rope, and add a "Spline Select" modifier on top of it. Select the top vertex. Now add the "Reactor Attach ToRB" modifier on top of the "Spline Select", and pic the baloon. Be sure, to leave the "Do not affect rigid body", and the "Ignore collisions" checked, again, to eliminate unneccesary troubles...

Now, put another "Spline select" modifier on top of the stack on the rope, and select the vertex on the bottomn of the rope. Again, put a "Reactor Attach ToRB" modifier on top of the "Spline Select"... And attach it to the tag. This time, uncheck the "Do not affect rigid body", so the tag will follow the ribbon's motion. (The ribbon will drag the tag....)

Now, after done with the rest of the reactor setup, run the simulation. It should work.

The twists, and folds of your ribbon can be done later with the integrated deformations of the lofting method.

Hope this helped! Good luck! :)

[jason-slab]

hey thx man, its working perfectly now

i was putting the rope modifier at the top of the stack, and i didn't uncheck the "Do not affect rigid body"

so thanks again, this is great

l8r
|jason

[Aldaryn]

Great! :thumbsup:

Glad I could help....

[grouchy_smurf]

hey i'm also having a similar problem...how do you animate an object after attaching the rope? after i create the animation from reactor the end of the rope stays in place (to the spot where it was attached to) while the box moves (without the end of the rope attached to it) here's what i mean...

http://img.photobucket.com/albums/v363/grouchy_smurf/reactor1.jpg

http://img.photobucket.com/albums/v363/grouchy_smurf/reactor2.jpg

and i can't figure out how to make the smaller box "pull" the larger box...any suggestions? :shrug:

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