public void Read_Unstructured_Grid_File(string filename)
{
// Initalize VTK Reader
vtkXMLUnstructuredGridReader reader = new vtkXMLUnstructuredGridReader();
reader.SetFileName(filename);
reader.Update();
vtkUnstructuredGrid grid = reader.GetOutput();
vtkCellArray data = grid.GetCells();
vtkIdList idList = vtkIdList.New();
int numCells = (int)data.GetNumberOfCells();
if (numCells != 0)
{
if (grid.GetCellType(0) == 10)
{
isTetra = true;
Console.WriteLine("Celltype is tetra");
}
else if (grid.GetCellType(0) == 5)
{
isTetra = false;
Console.WriteLine("Celltype is triangle");
}
else
{
Console.WriteLine("No valid celltype");
}
for (int i = 0; i < numCells; i++)
{
long cellTypeID = grid.GetCellType(i);
// alle punkte durchlaufen und in eine Variable für jeden Punkt die anderen drei Punkte speichern
if (isTetra)
{
Vector4 tetraPoint = new Vector4();
grid.GetCellPoints(i, idList);
// ueber alle vier punkte iterieren und diese in extra liste für jeden Punkt speichern
for (int j = 0; j < 4; j++)
{
tetraPoint[j] = idList.GetId(j);
}
tetraPoints.Add(tetraPoint);
}
else if (!isTetra)
{
Vector3 triangle = new Vector3();
grid.GetCellPoints(i, idList);
// ueber alle drei punkte iterieren und diese in extra liste für jeden Punkt speichern
for (int j = 0; j < 3; j++)
{
triangle[j] = idList.GetId(j);
}
trianglePoints.Add(triangle);
}
}
}
// Read Point Coordinates
vtkPoints points = grid.GetPoints();
int numPoints = (int)points.GetNumberOfPoints();
List <Vector3d> point_dat = new List <Vector3d>();
if (numPoints != 0)
{
// Read Point Data
double[] pt;
for (int i = 0; i < numPoints; i++)
{
pt = points.GetPoint(i);
point_dat.Add(new Vector3d((float)pt[0], (float)pt[1], (float)pt[2]));
}
if (this.vertex_data.ContainsKey("vertices"))
{
this.vertex_data["vertices"] = point_dat;
}
else
{
this.vertex_data.Add("vertices", point_dat);
}
Console.WriteLine("All points read in correctly!");
}
else
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("---------------No Points existent");
}
vtkPointData pointData = grid.GetPointData();
// Load point attributes
this.Load_Point_Attributes(pointData);
}
