VDB Watertight Mesh

[Yon]

Anyone know this vdb technique to create watertight meshs?

will it output identical geo but watertight? Can it be used for destruction prep?

thanks

[Juraj]

Hi,
if you convert polygons -> VDB volume -> polygons, then you will get watertight mesh. Input and output meshes will be very similar, to make them almost identical you have to set high volume resolution.

Check those SOP nodes: VDB from polygons and VDB convert.

It is suitable for destruction prep, because it is very tolerant to input geometry - it can handle bad topology, intersections etc. From VDB volume you can generate proxy meshes for simulation (VDB convert), or you can generate sphere primitives (VDB to spheres) which is also useful for efficient Bullet RBD sim.

[haggi]

Woudn't be a polyCap node enough to create closed meshes? After my experience VDB do not work very well if you don't already have a closed surface.

[Yon]

!!! yess it works perfect haha

do not even need high res, .1 is enough

I'm surprised how accurate the geo is..as you see on the left the geo with a unshared edge, and the new mesh on the right

I need a quick otl like this cuz I'm prepping this temple and need to just drop a node and its watertight

thanks juraj!!

[Juraj]

Hi, glad it helped you. Check Adaptivity option in VDB Convert, it will reduce amount of polygons of output mesh.

Edited August 29, 2016 by Juraj