Option Explicit

Sub ExplodeMesh
  Dim mesh
  mesh = Rhino.GetObject("Select mesh to explode", 32)
  If IsNull(mesh) Then Exit Sub

  Dim faces
  faces = Rhino.MeshFaces(mesh, True)
  If Not IsArray(faces) Then Exit Sub

  Rhino.EnableRedraw False
  Dim i, a, b, c, d, bQuad
  i = 0

  While i <= UBound(faces)
    a = faces(i)
    b = faces(i+1)
    c = faces(i+2)
    d = faces(i+3)
    If c(0)=d(0) And c(1)=d(1) And c(2)=d(2) Then
      Rhino.AddMesh Array(a,b,c,d), Array(Array(0,1,2,2))
    Else
      Rhino.AddMesh Array(a,b,c,d), Array(Array(0,1,2,3))
    End If
    i = i + 4
  Wend

  Rhino.DeleteObject mesh
  Rhino.EnableRedraw True

End Sub