Transform/Rotate polyData for OBBTree Intersection (vtk.js)

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This is probably a simple issue but I can’t seem to figure it out currently. I have some geometry that I want to do some intersection displaying on. I can properly get it to load the data for a vtkXMLPoloyDataReader and pass in the values as a well as calculate and visualize the intersections.

I can rotate the actors properly but I’m not sure how to rotate the polyData as the input into the triangleFilter for the intersection calculations. I know there is a “vtkTransformPolyDataFilter” in VTK base but is there a corresponding way I can do the same/similar thing in vtk.js?

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You can create your own filter that does the following operation to transform points location… Just make sure you clone the points so you do not modify your input.

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you do not have to transform the polydata to do the OBB intersection, the intersection function parameter signature lets you pass in transform matrices

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Thank you both, I see it now here: vtk-js/index.js at 5f4a729aff007341459ed5a8bd943e53d07e0765 · Kitware/vtk-js · GitHub