Rigid Body Dynamics

[dolexd]

Hi,

I am working on a rigid body simulation. I have a wall and used a voronoi to fracture. Then I used the rigid body fracture to activate the breakage.

Now I have a ball being thrown at the wall which I want to cause the destruction to the wall, but as soon as I start the simulation, the wall starts breaking without the ball hitting it.

What should I do so that the wall starts breaking only after the ball hits the wall.

Thanks,

Sid

Break_Wall.hipnc

Edited January 15, 2013 by dolexd

[goldleaf]

You could add a glue constraint network, and make it really high until you want them to break. SideFX released an in-depth video about Bullet, I highly recommend it: http://www.sidefx.com/index.php?option=com_content&task=view&id=2350&Itemid=166

Also, you can key-frame the activation frame of the wall, so it doesn't start until the desired frame.

[gui]

yes. And you can use the glue constraint and constrain the wall to another object (a static one), so the wall will be constrained to a static object. Another option is to select manually some pieces of the wall and make them inactive, using the active value node.

[dolexd]

Well, the thing is I am not using "make breakable" shelf tool and hence the fracture parms does not get created.

I am procedurally building the voronoi and then making it a RBD fracture. So I don't know how to set the impact object now.