orient primitive normals

[an2050]

hi guys! I need your help! After some actions I got the incorrect orient primitive normals. How do I can orient it properly procedural, how do I can understand what current direction for current polygon, and then revers it or do nothing?
I need it for further extruding.

[Sepu]

You can use a group SOP for the ones that are reverse, then apply the Reverse SOP on the group, or just apply the reverse sop directly and enter the prim numbers. It should work. if not upload the .hip file so we can see what the issue exactly.

Edited December 25, 2017 by Sepu

[an2050]

Group SOP is good way but I need to do this automatically, define the conditions by which I could understand the direction of the normal, depending on these conditions make corrections.

Thanks very much for your response.

orient_normals_v01.hipnc

[f1480187]

@an2050 try Boolean instead. It will output correct geometry to work with.

Then project primitive normal onto a direction vector (global Z axis in this case) to get input normal for PolyExtrude:

orient_normals_v01_fix.hipnc

Edited December 26, 2017 by f1480187

[an2050]

This is what i need! Thank you very much!