Blender Git Loki

Add utility methods for field destinations and selection fields

add some comments

rename field related classes

use GFieldRef where appropriate

fix bug when the same field is evaluated twice

add initial Attribute Freeze node

support deduplication of normal node

fix typo

Merge branch 'master' into temp-geometry-nodes-fields

Cleanup and improve comment

Add initial normal node

In contrast with the read-only "normal" attribute on the face domain,
this node gives normalized values for every mesh domain, including
edges and corners. This is preferrable since it's much more predictable
to work with.

The implementation is a little more complicated than I would like,
but could be improved with const access to lazy calculation of normals
on meshes, which is something I've been planning to work on anyway.

Fix function and define names

Cleanup: Internally rename "position" to "input_position"

Maybe we'll decide not to do this, for now maybe it's better to be consistent though

Cleanup: Rename index node define

Add "Index" node

Allow Set Position node to act on more component types, cleanup

Add a special case for a selection span

This will probably end up being a utility used elsewhere,
so it's worth adding this case.

Reorder input sockets

Since the position is the more important input compared to the
selection, it should be on top

Cleanup: Remove unnecessary include

Merge branch 'master' into temp-geometry-nodes-fields