vex - removepoint not working

[TomRaynor]

Anyone have any idea why the removepoint() vex expression doesn't work in the following example?

removePointVex_v01.hip

[ophamletsen]

Not really an answer to your question of why it doesnt work, but in an attribwrangle, the following works:

 

int condition = (@P.x > 0) ? 1: 0; // short form if() test

if (condition){

    @Cd = set( condition, 0, 0);      // color red

    removepoint(geoself(), @ptnum);       // if true remove points

}

[Skybar]

It works with Attrib Wrangle yes. I'm not that familiar with vex, but can you add/remove geo out of cvex?

[TomRaynor]

Really weird. I would have expected it to work the same way with the point wrangle unless I am missing something...

I might ask sidefx.

Thanks.

[Skybar]

Really weird. I would have expected it to work the same way with the point wrangle unless I am missing something...

I might ask sidefx.

Thanks.

Yeah well Point Wrangle is VEX and Attrib Wrangle is CVEX, so there is a difference.

[old school]

Hi Tom,

 

Point Wrangle uses the point only SOP VEX context which doesn't allow you to do anything other than modify point attributes.

 

The more general CVEX context for geometry which the Attribute Wrangle uses, allows you to modify prim/point/vertex/detail attributes as well as create/modify/destroy primitives and points.

[TomRaynor]

Perfect! Thanks for clarifying this Jeff!