interpolation routines to separate file.

src/types.jl

@@ -0,0 +1,28 @@
+# This file is a part of JuliaFEM.
+# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
+
+
+type Element
+    id :: Int
+    element_type :: Int
+    node_ids :: Array{Int, 1}
+    basis :: Function
+    dbasis :: Function
+    attributes :: Dict{ASCIIString, Any}
+    ipoints :: Array{Float64, 2}
+    iweights :: Array{Float64, 1}
+end
+
+
+type Assembly
+    # LHS
+    I :: Array{Int64, 1}
+    J :: Array{Int64, 1}
+    A :: Array{Float64, 1}
+    # RHS
+    i :: Array{Int64, 1}
+    b :: Array{Float64, 1}
+    # global dofs for each element
+    gdofs :: Dict{Int64, Array{Int64, 1}}
+end
+