feat(meshGeneration): simple spherical mesh generation script

utils/meshGeneration/generateMesh.py

@@ -0,0 +1,24 @@
+import pygmsh
+import meshio
+
+import argparse
+
+def generate_spherical_mesh(radius=1, meshSize=0.1):
+    with pygmsh.geo.Geometry() as geo:
+        # Create a spherical (ball) geometry centered at (0,0,0)
+        sphere = geo.add_ball([0, 0, 0], radius)
+        # Generate a 2D mesh (i.e. surface mesh) of the sphere
+        myMesh = geo.generate_mesh(dim=2)
+    return myMesh
+
+def write_mfem_mesh(meshData, filename):
+    meshio.write(filename, meshData, file_format='netgen')
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='Generate a spherical mesh')
+    parser.add_argument('--radius', type=float, default=1.0, help='Radius of the sphere')
+    parser.add_argument('--meshSize', type=float, default=0.1, help='Mesh size')
+    args = parser.parse_args()
+
+    meshData = generate_spherical_mesh(args.radius, args.meshSize)
+    write_mfem_mesh(meshData, 'sphere.mesh')

utils/meshGeneration/readme.md

@@ -0,0 +1,8 @@
+# spherical mesh generation
+A simple script to generate the base spherical mesh which 4DSSE uses to solve equations. 
+This will produce a unit sphere mesh centered on (0, 0, 0) which can be rescaled within the
+4DSSE program.
+
+## Dependecies
+- pygmsh
+- meshio

utils/meshGeneration/sphere.mesh

@@ -0,0 +1,599 @@
+# Generated by meshio 5.3.5
+mesh3d
+
+dimension
+3
+
+geomtype
+0
+
+# surfnr    bcnr   domin  domout      np      p1      p2      p3
+surfaceelements
+310
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+
+#  matnr      np      p1      p2      p3      p4
+volumeelements
+0
+
+# surfid  0   p1   p2   trignum1    trignum2   domin/surfnr1    domout/surfnr2   ednr1   dist1   ednr2   dist2
+edgesegmentsgi2
+60
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