- Use `Vector::remove_if` rather than custom "filter" functions copying
data to new vectors.
- Pass `float3` by const reference.
- Reorder arguments to pass constant/operation-global arguments first,
also using consistent order for mesh data arrays.
- Use const for some `Object` arguments.
- Initialize zero `float3` in a simpler way.
- Simplify neighbor averaging by checking for empty vectors first.
- Use more standard grids index variable names
- Remove `BLI_NOINLINE` from functions called for every element, more
consistent usage in general.
Pull Request: https://projects.blender.org/blender/blender/pulls/126145
ae13fb5a53