add convenience constructor for MeshData (#184)

jlchan · Sep 17, 2024 · fa1e004 · fa1e004
1 parent 98f1090
commit fa1e004
Showing 1 changed file with 20 additions and 0 deletions.
diff --git a/src/MeshData.jl b/src/MeshData.jl
@@ -221,6 +221,26 @@ MeshData(mesh::Tuple{<:Tuple, Matrix{Int64}}, rd::RefElemData, other_args...; kw
 MeshData(VXYZ, EToV, rd::RefElemData, other_args...; kwargs...) = 
     MeshData(VXYZ..., EToV, rd, other_args...; kwargs...) # splats VXYZ 
 
+"""
+    MeshData(cells_per_dimension, rd::RefElemData{NDIMS}; 
+             coordinates_min = ntuple(_ -> -1.0, NDIMS), 
+             coordinates_max = ntuple(_ -> 1.0, NDIMS),  
+             is_periodic=ntuple(_ -> false, NDIMS)) where {NDIMS}
+
+Returns a `MeshData` initialized on a uniform mesh with `cells_per_dimension` elements per 
+dimension scaled to the following tensor product domain: 
+`[coordinates_min[1], coordinates_max[1]]x[coordinates_min[2], coordinates_max[2]], ...`. 
+"""
+function MeshData(cells_per_dimension, rd::RefElemData{NDIMS}; 
+                  coordinates_min = ntuple(_ -> -1.0, NDIMS), 
+                  coordinates_max = ntuple(_ -> 1.0, NDIMS),  
+                  is_periodic=ntuple(_ -> false, NDIMS)) where {NDIMS}
+    VXYZ, EToV = uniform_mesh(rd.element_type, cells_per_dimension)
+    VXYZ = map((x, xmin, xmax) -> (@. 0.5 * (x + 1) * (xmax - xmin) + xmin), 
+                VXYZ, coordinates_min, coordinates_max)
+    return MeshData(VXYZ, EToV, rd; is_periodic)                
+end   
+
 function MeshData(VX::AbstractVector, EToV, rd::RefElemData{1}; is_periodic=(false, ))
 
     # Construct global coordinates