The Triangle Strips filter generates triangle strips and/or poly-lines from input polygons, triangle strips, and lines. Input polygons are assembled into triangle strips only if they are triangles; other types of polygons are passed through to the output and not stripped. (Use vtkTriangleFilter to triangulate non-triangular polygons prior to running this filter if you need to strip all the data.) The filter will pass through (to the output) vertices if they are present in the input polydata.