lamda

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

Erik_JE
This should give you an idea.

Thank you Erik_JE, i will try asap !!

sanchoflat
ouh, i m to come from maya and dynamics is the interesting think for me, but learn houdini about 2 weeks, and if it possible - can you download the file this project?

I don't have any file. I'm just trying to reproduce what is on the video.

I have some ideas but does't match very well.

Does somebody knows a nice workflow to achieve this effect ?