public void Read_MultiblockData_File(string filename)
{
vtkXMLMultiBlockDataReader reader = new vtkXMLMultiBlockDataReader();
reader.SetFileName(filename);
reader.Update();
vtkMultiBlockDataSet data = (vtkMultiBlockDataSet)reader.GetOutput();
vtkInformation vtkInformation = data.GetMetaData(0);
uint numBlocks = data.GetNumberOfBlocks();
if (numBlocks == 1)
{
vtkStructuredGrid structuredGrid = (vtkStructuredGrid)data.GetBlock(0);
dimensions = structuredGrid.GetDimensions();
vtkPoints points = structuredGrid.GetPoints();
int numPoints = (int)structuredGrid.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!");
}
vtkPointData scalarValues = (vtkPointData)data.GetBlock(0).GetAttributes(0);
// Load point attributes
this.Load_Point_Attributes(scalarValues);
}
}
public void WriteVTM(string filePath, List <Vector3d> point_data, List <Vector4> tetrapoints, Dictionary <String, vtkDataArray> scalar_dataArray, List <String> arrayNames, int numberOfPoints, int numberOfTetraPoints)
{
vtkPoints points = vtkPoints.New();
for (int i = 0; i < numberOfPoints; i++)
{
points.InsertNextPoint(point_data[i].X, point_data[i].Y, point_data[i].Z);
}
vtkMultiBlockDataSet multiBlockDataSet = vtkMultiBlockDataSet.New();
double countBlocks = Math.Ceiling((double)((1.0 * numberOfTetraPoints) / 1000000));
multiBlockDataSet.SetNumberOfBlocks((uint)1);
for (int j = 0; j < 1; j++)
{
vtkUnstructuredGrid unstructuredGrid = vtkUnstructuredGrid.New();
vtkCellArray cellArrayOne = vtkCellArray.New();
int countTetras = 0;
int startTetras = j * 1000000;
if (numberOfTetraPoints < (j * 1000000) + 1000000)
{
countTetras = numberOfTetraPoints;
}
else
{
countTetras = (j * 1000000) + 1000000;
}
for (int i = startTetras; i < tetrapoints.Count(); i++)
{
vtkTetra tetra = vtkTetra.New();
tetra.GetPointIds().SetId(0, (long)tetrapoints[i][0]);
tetra.GetPointIds().SetId(1, (long)tetrapoints[i][1]);
tetra.GetPointIds().SetId(2, (long)tetrapoints[i][2]);
tetra.GetPointIds().SetId(3, (long)tetrapoints[i][3]);
cellArrayOne.InsertNextCell(tetra);
}
//for (int i = 0; i < tetrapoints2.Count(); i++)
//{
// vtkTetra tetra = vtkTetra.New();
// tetra.GetPointIds().SetId(0, (long)tetrapoints2[i][0]);
// tetra.GetPointIds().SetId(1, (long)tetrapoints2[i][1]);
// tetra.GetPointIds().SetId(2, (long)tetrapoints2[i][2]);
// tetra.GetPointIds().SetId(3, (long)tetrapoints2[i][3]);
// cellArrayOne.InsertNextCell(tetra);
//}
unstructuredGrid.SetPoints(points);
const int VTK_TETRA = 10;
unstructuredGrid.SetCells(VTK_TETRA, cellArrayOne);
int numberOfScalarData = scalar_dataArray.Count();
for (int i = 0; i < numberOfScalarData; i++)
{
scalar_dataArray.TryGetValue(arrayNames[i], out vtkDataArray scalars);
unstructuredGrid.GetPointData().AddArray(scalars);
}
multiBlockDataSet.SetBlock((uint)j, unstructuredGrid);
}
// add file ending if it is not existent
string suffix = (".vtm");
if (!(filePath.EndsWith(suffix)))
{
filePath += suffix;
}
// Write file
vtkXMLMultiBlockDataWriter writer = vtkXMLMultiBlockDataWriter.New();
writer.SetFileName(filePath);
writer.SetInput(multiBlockDataSet);
writer.Write();
// Read and display file for verification that it was written correctly
vtkXMLMultiBlockDataReader reader = vtkXMLMultiBlockDataReader.New();
if (reader.CanReadFile(filePath) == 0)
{
//MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
return;
}
Console.WriteLine("VTU file was writen and is saved at {0}", filePath);
}