Hello!


Cant find answer anywhere on forums (too obvious?)


How to create points per face? Or force copy (or emission attribute for particles), to use center of the polygon. Foreach node?


I'm trying to do similar effect like in this topic:


http://www.orbaz.com/forum/viewtopic.php?t=2275&postdays=0&postorder=asc&highlight=align&start=15 [orbaz.com]



In this 3ds max setup center of the spawn point is kind of cheated - it's just Y mult 0.5 (thus Z in Houdini).

THEN, I'll need to align along normal, and probably “find loop”, or any other technique that will align them in one direction.

Create an Attribute wrangle and use this on primitives.
It creates points on the centers of primitives which you can use to copy your object to.


addpoint(0, @P);
removeprim(0, @primnum, 1);

or the more manual way is to use a facet node with unique points ‘on’ to break primitives apart.
Then use a Primitive node to scale all the prims to 0 (to the center of the primitives).
Now use a fuse to filter the points.

Same as above…use this to copy objects to.

You can also use Centroidal Points SOP:
http://www.orbolt.com/asset/animatrix::centroidalPoints::1.00 [orbolt.com]

Thank you for help! I'll try both solutions today.

edit: Another problem is: how to promote or copy N from prims into new points? I've tried changing class, or work on prim and points - but then N was gone details.

I've managed to copy N from vertecies, but then the normal of new centered points is bad.