Display subset of polydata

[nelly (Alec)]

I was able to achieve what I wanted. Here are the steps I took to display a subset of polygons. I first grabbed the cell data and indices of cell data above my threshold. I then created new polydata instance, and grabbed the appropriate polys and points using the thresholded indices. Then I set the new polydata instance with those newly created data arrays. I found these helpful:

https://public.kitware.com/pipermail/vtkusers/2004-July/025395.html

Manually Create PolyData in vtk.js

I am struggling to create polydata manually with vtk.js. The methods I used in VTK are not working/supported in vtk.js. A basic example from VTK is as follows: vtkSmartPointer points = vtkSmartPointer::New(); vtkSmartPointer triangles = vtkSmartPointer::New(); vtkSmartPointer textureCoordinates = vtkSmartPointer::New(); textureCoordinates->SetNumberOfComponents(2); textureCoordinates->SetName(“TextureCoordinates”); float xval, yval, x1, y1, x2, y2; double sinangtop = Math::Sin(vtkMath::R…