Hey guys, I am an absolute beginner. I would like to know the solution on how to separate the generated geom into several pieces which each of them have 65k vertices max for Unity import.

In my situation, the OUT vertices count is unknown because it is generated based on the Unity input so I can't rely on the remesh to trim it down.

As I am very new to Houdini + VEX. I would like to know if anyone can show me how to separate the geom into several pieces in VEX.

Thanks!

You don't need vex to separate pieces, just use delete nodes on a group selection of faces or points. Then follow that up with a polyreduce to dial in your face count.

https://www.youtube.com/watch?v=W1AkNLkRwyA [www.youtube.com]

Thank you for your reply. But in my case, I want to figure it out 2 possible solutions:

1. Like what you suggested, to reduce geom smaller that fit in the 65k limitation. However, polyReduce only provide the % option. If the geom input is dynamic, using % can't be sure to make it fit into 65k vertices unless there is an expression can make it works.
   
2. Slices the geom into several pieces and each of them has maximum 65k vertices so that it preserves all the details.
   

1. PolyReduce does have a number mode where you can specify exactly the number of polygons for the output.

2. Once again, use the delete node on a group or selection. If you middle click on a node you can see information. Often imported objects contain groups or materials. You can filter your delete by those values. The delete node can also invert the delete, which is very useful, this way you can isolate the selection/piece instead of deleting it.

Thank you!! Very helpful!!