Enhance pre-processing flexibility to both read inp files and generate point clouds.

Author: ShiWeiHuH

src/IBM/post_2d.jl

@@ -77,6 +77,21 @@ mutable struct Post2D <: AbstractPDGeometry
 
         new(bc_nodes, pos, area_vec, in_bc_nodes, bc_edge, nodes, pd_id_to_surface, surface_elements, element_type, bc_counter)
     end
+
+    function Post2D() # default constructor without file input
+        new(
+            Int[],                                         # bc_nodes
+            Matrix{Float64}(undef, 0, 0),                  # pos
+            Float64[],                                     # area
+            Int[],                                         # in_bc_nodes
+            Dict{Int, Vector{Vector{Vector{Float64}}}}(),  # bc_edge
+            Dict{Int, Vector{Float64}}(),                  # mesh_nodes
+            Dict{Int, Int}(),                              # pd_id_to_surface
+            Dict{Int, Vector{Int}}(),                      # surface_elements
+            Dict{Int, String}(),                           # element_type
+            BoundaryCounter()                              # bc_counter
+        )
+    end
 end
 
 # Helper function to access the main components

src/IBM/post_3d.jl

@@ -77,6 +77,21 @@ mutable struct Post3D <: AbstractPDGeometry
 
         new(bc_nodes, pos, vol_vec, in_bc_nodes, bc_surface, nodes, pd_id_to_volume, volume_elements, element_type, bc_counter)
     end
+        
+    function Post3D() # default constructor without file input
+        new(
+            Int[],                                         # bc_nodes
+            Matrix{Float64}(undef, 0, 0),                  # pos
+            Float64[],                                     # volume
+            Int[],                                         # in_bc_nodes
+            Dict{Int, Vector{Vector{Vector{Float64}}}}(),  # bc_surface
+            Dict{Int, Vector{Float64}}(),                  # mesh_nodes
+            Dict{Int, Int}(),                              # pd_id_to_volume
+            Dict{Int, Vector{Int}}(),                      # volume_elements
+            Dict{Int, String}(),                           # element_type
+            BoundaryCounter()                              # bc_counter
+        )
+    end
 end
 
 # Helper function to access the main components