Instancing a prefab at each point on a mesh

Unity Engine
1

Hi there,

Just having a bit of trouble with this, I wanted to instance a prefab at each point of this mesh but I think I’m getting mixed up between points and verts…

I was looking at this mesh as a test

With this script I get 7 points but I would have thought there’d be 5-

            //Find all verts in mesh
            Mesh mesh = TargetMesh.GetComponent<MeshFilter>().sharedMesh;
            Vector3[] vertices = mesh.vertices;
            Vector3[] normals = mesh.normals;
            MeshCount = vertices.Length;

            //Move the helper to the current vert
            CurrentPoint = Mathf.Clamp (CurrentPoint, 0, vertices.Length - 1);
            PointHelper.position = vertices[CurrentPoint];

So if I instance at each of those verts I’ll get some objects at the same location.
Is there a way to get point position rather than verts maybe? Is that what I’m getting mixed up with?

Thanks!
Pete

2

You’re doing it correctly but unfortunately you can get duplicate vertices in a mesh - any vertex that doesn’t share the same colour/uv/normal will end up being assigned a new vertex slot in the list. You’d have to go through the vertices first and just find the unique ones.

3

Ahhh interesting, thanks for that. I ran a check for duplicates and that seemed to work. I am exporting the mesh out of Houdini and you have a fair amount of control of verts and points so I might be able to fix the outgoing stuff there if it comes to it.

Thanks!
Pete