How to change Vertex numbers order?

[jungjaehwa]

The order of Point numbers can change with Sort SOP.

However I can't look for how to change vertex numbers order.

What can I do that?

Please let me know.

Edited June 19, 2014 by jungjaehwa

[pezetko]

Use: Set Primitive Vertex VOP (AttribVOP SOP)

Edited June 18, 2014 by pezetko

[old school]

First off shifting the vertex order will actually change the way the geometry is constructed. Just so you know.

 

Adding to the post above, you can use the Primitive SOP's Face/Hull tab to reverse the vertex sort (reversing the primitive normals to boot) or shift the vertex number. Any of these shifts will keep the point order intact.

 

If you want to reconstruct the primitive using any vertex sort driven by the point sort order, you can use the Add SOP. First press the toggle to just keep the points. Then in the Polygons Tab choose the Group option. Now your vertex order will match the point order, as messed up as you want it to be.

 

If you have multiple primitives to reconstruct, use the Connectivity SOP to create a partition attribute and use the "By Attribute" option in the Add menu parameter.

 

 

There are a bunch of other ways to reconstruct primitives from re-sorted vertices but the Add SOP is the easiest to use driven by the point order.

playing_with_vertex_order.hip

[jungjaehwa]

Hi Pezetko,

Thank you so much for your help.

That's good. Really good. I am happy to know that "Set Primitive Vertex VOP".

 

Have a great day.

Edited June 19, 2014 by jungjaehwa

[jungjaehwa]

Hi old school,

 

Thank you so much for your support and kindly you.

You are always great mentor for Houdini artist all over the world.

 

Your attached file I totally understand. I got it.

Have a great day.

 

Best,

Jamie