initial angular velocity to cloth pieces

[Doum]

Hey all,

I'm trying to simulate cash with cloth.

I create cash in sop with a copySOP and group them by polygon island using the assemble node.

I import them in DOP in one cloth object. Everything until there is working.

I'm wondering if it's possible to give them a rotational velocity by piece at the beginning?

? Any idea ?

Thanks

Doum

[Akabane]

Add velocities to the pieces in SOP before feeding them into the cloth solver? Should work O.o

Either you add velocities to the points and them copy them to the copied cash objects (and you'll have 1 vel vector which is uniform for each cash piece), or after copying them, create vel vectors for each cash object (in this case you'll have every cash piece having varying velocities per-point, and per-object).

Edit, whops, just realized you asked for ANGULAR vel...

Well you can recreate it giving each piece of cloth opposite velocities at both ends, as you'd do in real life:

v(1,0,0)------v(-1,0,0) (where "-------" is the cash bill from the side)

This should create a spin force on each object.

Edited April 24, 2013 by Akabane

[Doum]

thanks akabane I'll give a try.

Just setting point velocity in vopsop should add initial vel to the cloth ? or it's a special attribute ?

Thanks

[bloomendale]

you can create 2 points per note with vector attrib pointing in opposite random directions and then use these points as geo data for field force. It will add initial chaotic motion.

[Doum]

hey guys,

Here my sample scn with the technic Akabane told me to try. If someone is interested, but it's really basic...

I'm curious about your Technic bloomendale, I'll try it.

Just curious, what if I want to apply this velocity over time ?

I can import my points vel with a sopgeo in dop and connect this in a vector field + field force? or something like that ?

thanks

InitialAngularVel_toCloth.hipnc