Erosion..Eroded..Eroding..

education eroded me brains :D (I intend to study further..please don't take offense of this :P )

I had recently seen Peter Claes's erosion effect and was pretty much inspired to do the same....

I did know about the SOP Solver solution which was very well illustrated in the Houdini's Help docs in "Denting With Particles" example..

However I wanted to try and keep the things out of DOPs as it could slow things down a bit...(I did use OdForce's Attrib sim accumulator which is very handy but ended up doing the stuff using POPs

I used VOP SOPs, POPs (which could be optional), and ..well thats all I guess..

I said the use of pops was optional as the only thing I used them was to decide which place will be eroded and thats about it....This could also be done by say painting colors, attribs based on primitive numbers etc.

The Heart of the effect was in the VOP SOP which used the normal to manipulate the point position and fake the erosion of the geo....

Since this was implemented in VOP SOPs it can also be easily used as a displacement shader which would drastically improve rendertime....

PS: this is a low res video of the effect..

until next time,

TO INFINITYYYYYYY AND BEYOOOOONDDDD..