[vtkusers] How to color a line

[Patrick (Peng) Cheng]

Hi,
I have the following code to draw a tube in the scene.
The tube is of the same color. Now I have some scalar values at each point
How do I use something like lookup table to color the line according to the
scalar values. Thanks a lot

	vtkPolyData *data = vtkPolyData::New();
	data->SetPoints(points); // points is vtkPoints
	data->SetLines(line);	 // line is vtkCellArray
	
	vtkCleanPolyData *clean = vtkCleanPolyData::New();
	clean->SetInput(data);
	
	vtkTubeFilter *tube = vtkTubeFilter::New();
	tube->SetInput(clean->GetOutput());
	tube->SetRadius(0.6);
	tube->SetNumberOfSides(6);
	tube->SetVaryRadiusToVaryRadiusOff();
	
	vtkPolyDataMapper *mapper = vtkPolyDataMapper::New();
	mapper->SetInput(tube->GetOutput());
	
	vtkProperty *pro = vtkProperty::New();
	pro->SetColor(1,0,0);
	
	vtkActor *actor = vtkActor::New();
	actor->SetMapper(mapper);
	actor->SetProperty(pro);
---------------------------
Patrick (Peng) Cheng
Biomedical Engineering
University of Iowa
Tel:(319) 400-7442
Email: peng-cheng at uiowa.edu