Geometry Nodes raycast into self and get midpoint

[mechandrius]

Hello everyone

I have a humanoid mesh and I want to use the surface normals to raycast into the mesh (to the inside).
Then I want to get the midpoint of each ray to get a point cloud that represents the “most inner core” of the mesh.

My approach is, to cast with a small offset so that rays dont hit the surface immediatly at the start.
My problem is, that my normals and positions don’t seem to work after the raycast node.
Does someone has a node setup to create such an point cloud in the inside?

Greetings, Mesh

[mechandrius]

I found a solution myself. It was more of an error with the fields. I cant use prior fields and the raycast positions together (like i tried).

Here is a working node

[MuckYu (M)]

Hi, I am facing a similar problem. The image of your nodegroup is quite low resolution - could you upload a higher res one?

[mechandrius]

Yes, here is a better version.
You spawn points on the surface, go inside a little bit, raycast to the inside and move points to half the way, so they are ~in the “center” of each mesh volume area.