private static void IterateOverLines()
{
double[] origin = new double[] { 0.0, 0.0, 0.0 };
double[,] p = new double[, ] {
{ 1.0, 0.0, 0.0 },
{ 0.0, 1.0, 0.0 },
{ 0.0, 1.0, 2.0 },
{ 1.0, 2.0, 3.0 }
};
// Create a vtkPoints object and store the points in it
vtkPoints points = vtkPoints.New();
points.InsertNextPoint(origin[0], origin[1], origin[2]);
for (int i = 0; i < 4; i++)
{
points.InsertNextPoint(p[i, 0], p[i, 1], p[i, 2]);
}
// Create a cell array to store the lines in and add the lines to it
vtkCellArray lines = vtkCellArray.New();
// Create four lines
for (int i = 0; i < 4; i++)
{
vtkLine line = vtkLine.New();
line.GetPointIds().SetId(0, i);
line.GetPointIds().SetId(1, i + 1);
lines.InsertNextCell(line);
}
// Create a polydata to store everything in
vtkPolyData linesPolyData = vtkPolyData.New();
// Add the points to the dataset
linesPolyData.SetPoints(points);
// Add the lines to the dataset
linesPolyData.SetLines(lines);
Console.WriteLine("There are " + linesPolyData.GetNumberOfLines() + " lines.");
linesPolyData.GetLines().InitTraversal();
vtkIdList idList = vtkIdList.New();
while (linesPolyData.GetLines().GetNextCell(idList) != 0)
{
Console.WriteLine("Line has " + idList.GetNumberOfIds() + " points.");
for (int pointId = 0; pointId < idList.GetNumberOfIds(); pointId++)
{
Console.Write(idList.GetId(pointId) + " ");
}
Console.Write(Environment.NewLine);
}
}