How to close corners with tubefilter ?

Javi-r · June 21, 2022, 11:50am

How can I close the corners of the TubeFilter generated with vtkCutter ?

Screenshot_20220621_133909

const cutter = vtkCutter.newInstance();
cutter.setCutFunction(cutPlane);
cutter.setInputConnection(cube.getOutputPort());

const tubeFilter = vtkTubeFilter.newInstance({
radius: 1.5,
numberOfSides: 50,
capping: false
});
tubeFilter.setInputConnection(cutter.getOutputPort());
const tubeMapper = vtkMapper.newInstance();
tubeMapper.setInputConnection(tubeFilter.getOutputPort());
const tubeActor = vtkActor.newInstance();
tubeActor.setMapper(tubeMapper);
const tubeProperty = tubeActor.getProperty();
tubeProperty.setColor(0, 1, 0);

finetjul · June 21, 2022, 7:24pm

Have you considered using thick lines instead of tubes ?

Javi-r · June 21, 2022, 7:32pm

I don’t understand how to do that
How can I increase the thickness of vtkCutter ?

finetjul · June 21, 2022, 7:35pm

The output of vtkCutter is a vtkPolyData.
You simply use an actor+mapper to render the polydata into the render window and you set the lineWidth on the actor property.

mau_igna_06 · June 21, 2022, 9:14pm

Maybe you could use vtkStripper with JoinContigousSegmentsOn (something like this)

Hope it helps

Javi-r · June 22, 2022, 9:28am

When using setLineWidth, the same thing still happens.

Screenshot_20220622_112726

const cutter = vtkCutter.newInstance();
cutter.setCutFunction(cutPlane);
cutter.setInputConnection(cube.getOutputPort());
const cutMapper = vtkMapper.newInstance();
cutMapper.setInputConnection(cutter.getOutputPort());
const cutActor = vtkActor.newInstance();
cutActor.setMapper(cutMapper);
const cutProperty = cutActor.getProperty();
cutProperty.setLineWidth(10);

Javi-r · June 22, 2022, 9:44am

I don’t think vtkStripper is implemented in vtk.js