Hello,
I’m trying to use morph target, to morph an hexagon into a cube. The problem is the resulting normal.
In blender each vertex has 1 normal / face and I exported using Face smoothing group.
I want to keep the hard edge, i tried many way to import but it’s never the way I supposed it should be.
when importing the mesh:
if I import normal from mesh, the normal are ok, the mesh looks not smooth, but when changing the weight, the normal are not updated or in a bad way. And the edge in the middle of the cube is visible.
if I use the unreal normal computation I loose the hard edge, and have some back artifact.
I spent so many hours trying to figure what’s going on…
the mesh i’m using: Hekiat.github.io/Tile_Test.fbx at master · Hekiat/Hekiat.github.io · GitHub
thank you very much for any idea or response 
