private void GenerateGeometryFile(string path, List <Surface> surfaces, MeshProperties props)
{
int count = 0;
using (TextWriter tw = File.CreateText(path))
{
WriteComment(tw, "NODES");
Dictionary <Vector <double>, int> nodes = surfaces
.SelectMany(s => s.Nodes)
.Distinct()
.ToDictionary(node => node, node => count++);
foreach (Vector <double> p in nodes.Keys)
{
WriteLine(tw, GetDefinitionString("Point", nodes[p], new List <string>
{
Convert.ToString(p[0], CultureInfo.InvariantCulture),
Convert.ToString(p[1], CultureInfo.InvariantCulture),
Convert.ToString(p[2], CultureInfo.InvariantCulture),
Convert.ToString(props.Size, CultureInfo.InvariantCulture)
}));
}
count = 0;
WriteComment(tw, "LINES");
Dictionary <Line, int> lines = surfaces
.SelectMany(s => s.Lines)
.ToDictionary(node => node, node => count++);
foreach (Line line in lines.Keys)
{
WriteLine(tw, GetDefinitionString("Line", lines[line], new List <string>
{
Convert.ToString(nodes[line.StartNode], CultureInfo.InvariantCulture),
Convert.ToString(nodes[line.EndNode], CultureInfo.InvariantCulture)
}));
}
WriteComment(tw, "SURFACES");
count = 0;
foreach (Surface surface in surfaces)
{
List <string> lineTags = new List <string> {
Convert.ToString(count, CultureInfo.InvariantCulture)
};
WriteLine(tw, GetDefinitionString("Line Loop", count, surface.Lines.Select(l => Convert.ToString(lines[l], CultureInfo.InvariantCulture))));
WriteLine(tw, GetDefinitionString("Plane Surface", count, lineTags));
WriteLine(tw, GetDefinitionString("Physical Surface", count, lineTags));
if (props.Type == MeshType.Quadrangular)
{
WriteLine(tw, GetCommandString("Recombine Surface", lineTags));
}
count++;
}
tw.Flush();
tw.Close();
}
}
// METHODS
public Mesh GenerateMesh(IPhysicalModel model, MeshProperties props)
{
Mesh mesh = null;
FileInfo fileInfo = new FileInfo(gmshExecutionPath);
if (fileInfo.Exists)
{
DateTime now = DateTime.Now;
string prefix = $"{now.Year}-{now.Month}-{now.Day}--{now.Hour}-{now.Minute}-{now.Second}-{now.Millisecond}";
string geometryFile = Path.Combine(fileInfo.DirectoryName, $"{prefix}.geo");
string meshFile = Path.Combine(fileInfo.DirectoryName, $"{prefix}.msh");
GenerateGeometryFile(geometryFile, model.GetSurfaces(), props);
ExecuteGmsh(geometryFile, meshFile);
mesh = ReadMeshFile(meshFile);
}
return(mesh);
}