# WriteTriangleToFile

VTKExamples/Python/IO/WriteTriangleToFile

### Code

WriteTriangleToFile.py

    import vtk
    from vtk import *

    Points = vtk.vtkPoints()
    Triangles = vtk.vtkCellArray()
    Triangle = vtk.vtkTriangle();

    id = Points.InsertNextPoint(1.0, 0.0, 0.0)
    id = Points.InsertNextPoint(0.0, 0.0, 0.0)
    id = Points.InsertNextPoint(0.0, 1.0, 0.0)

    Triangle.GetPointIds().SetId(0, 0);
    Triangle.GetPointIds().SetId(1, 1);
    Triangle.GetPointIds().SetId(2, 2);
    Triangles.InsertNextCell(Triangle);

    polydata = vtk.vtkPolyData()
    polydata.SetPoints(Points)
    polydata.SetPolys(Triangles)
    polydata.Modified()
    if vtk.VTK_MAJOR_VERSION <= 5:
        polydata.Update()

    writer = vtk.vtkXMLPolyDataWriter();
    writer.SetFileName("Triangle.vtp");
    if vtk.VTK_MAJOR_VERSION <= 5:
        writer.SetInput(polydata)
    else:
        writer.SetInputData(polydata)
    writer.Write()