topic Instance geometry without displaying base object in Arnold General Rendering Forum

Instance geometry without displaying base object

Anonymous — Fri, 05 Jan 2018 20:11:15 GMT

I want to instance a polymesh, so I am creating it using an AtNode and instance it x times applying different matrices.

The instances are well displayed, but the initial reference mesh too. However I don't want the initial reference mesh to be displayed. How can I prevent this ?

AtNode *mesh= AiNode("polymesh");

... adding geometry to it ...

for (int u=0;u<10;u++)

{

currentInstance = AiNode("ginstance");

AiNodeSetPtr(currentInstance, "node", mesh);

... define transformation matrix mat...

AiNodeSetMatrix( currentInstance, "matrix", mat);

}

--> 10 instances are properly displayed at the proper location, however the initial "mesh" node is displayed too, so I have 11 elements displayed.

Re: Instance geometry without displaying base object

Stephen.Blair — Mon, 08 Jan 2018 17:25:03 GMT

Set visibility 0 on the master object, and visibility 255 on the ginstances

Re: Instance geometry without displaying base object

Anonymous — Mon, 08 Jan 2018 17:39:10 GMT

Works perfectly, thanks !!

Re: Instance geometry without displaying base object

cpz — Mon, 12 Aug 2019 17:23:36 GMT

Hi , in reference to the person who asked about visibility of instances, and not the base mesh, is this solution for C4d as well? I can not seem to find the AiNode, that was referenced above , can someone please help with this,? thx PS where is the "visibility" switch/slider , thx

Re: Instance geometry without displaying base object

Stephen.Blair — Mon, 12 Aug 2019 20:47:19 GMT

@Craig Zuckerman This is more of a code-level question. Plugins like C4DtoA would do all that for you; often a plugin will use the base mesh as one of the instances, so it depends on what exactly you are rendering. Can you ask a new question on the C4DtoA space?