Hi everybody,

Can someone help me to reproduce this effect :

http://vimeo.com/24105041 [vimeo.com]

This video is from this web page http://www.fxguide.com/featured/art-of-destruction-or-art-of-blowing-crap-up/ [fxguide.com]

The article gives explanation in 6 points :

1. A control object is animated to ‘paint’ the path of destruction.

2. A sopSolver records the animation and stores it per frame onto a grid or “control geometry” and deforms it to create a bulge in front of the smashing effect.

3. The grid gets thickness, and is voronoi fractured with the information collected in step 2, so we have a pre-fractured geometry

4. The fractures are ‘parented’ with a SOP to the deforming grid, created in step 2, they also get a attribute that stores the information when to release into the rigid body sim RBS.

5. Every piece that has the flag set to get into dynamics, gets fractured again, the resulting pieces are collected into a group.

6. The RBS itself is quite simple, it just has some ground, gravity, and it just copies the geometry into the RBS, that is created in step 5, (as a group).

Until the point 4, i get it.
But how to fracture again the pieces that get into dynamics ?
Which node to use ?

Has anybody an idea ?

Thanks a lot

The “make breakable” shelf tool will setup dynamic fracturing/refracturing in DOPs. If I remember correctly it just lays down a Voronoi Fracture Configure Object dop.