public static MeshDraft Band(List <Vector3> lowerRing, List <Vector3> upperRing)
{
var draft = new MeshDraft {
name = "Band"
};
if (lowerRing.Count < 3 || upperRing.Count < 3)
{
Debug.LogError("Array sizes must be greater than 2");
return(draft);
}
if (lowerRing.Count != upperRing.Count)
{
Debug.LogError("Array sizes must be equal");
return(draft);
}
draft.vertices.AddRange(lowerRing);
draft.vertices.AddRange(upperRing);
var lowerNormals = new List <Vector3>();
var upperNormals = new List <Vector3>();
var lowerUv = new List <Vector2>();
var upperUv = new List <Vector2>();
int i0, i1, i2, i3;
Vector3 v0, v1, v2, v3;
for (int i = 0; i < lowerRing.Count - 1; i++)
{
i0 = i;
i1 = i + lowerRing.Count;
i2 = i + 1;
i3 = i + 1 + lowerRing.Count;
v0 = draft.vertices[i0];
v1 = draft.vertices[i1];
v2 = draft.vertices[i2];
v3 = draft.vertices[i3];
draft.triangles.AddRange(new[] { i0, i1, i2 });
draft.triangles.AddRange(new[] { i2, i1, i3 });
lowerNormals.Add(Vector3.Cross(v1 - v0, v2 - v0).normalized);
upperNormals.Add(Vector3.Cross(v3 - v1, v0 - v1).normalized);
var u = (float)i / (lowerRing.Count - 1);
lowerUv.Add(new Vector2(u, 0));
upperUv.Add(new Vector2(u, 1));
}
i0 = lowerRing.Count - 1;
i1 = lowerRing.Count * 2 - 1;
i2 = 0;
i3 = lowerRing.Count;
v0 = draft.vertices[i0];
v1 = draft.vertices[i1];
v2 = draft.vertices[i2];
v3 = draft.vertices[i3];
draft.triangles.AddRange(new[] { i0, i1, i2 });
draft.triangles.AddRange(new[] { i2, i1, i3 });
lowerNormals.Add(Vector3.Cross(v1 - v0, v2 - v0).normalized);
upperNormals.Add(Vector3.Cross(v3 - v1, v0 - v1).normalized);
draft.normals.AddRange(lowerNormals);
draft.normals.AddRange(upperNormals);
lowerUv.Add(new Vector2(1, 0));
upperUv.Add(new Vector2(1, 1));
draft.uv.AddRange(lowerUv);
draft.uv.AddRange(upperUv);
return(draft);
}
public static Mesh Pyramid(float radius, int segments, float height, bool inverted = false)
{
return(MeshDraft.Pyramid(radius, segments, height, inverted).ToMesh());
}
private static void TriUV(MeshDraft draft, Vector2 first, Vector2 second, Vector2 third)
{
draft.uv.Add(first);
draft.uv.Add(second);
draft.uv.Add(third);
}