ParaView Linear Extrusion

Linear Extrusion Filter in ParaView
Linear Extrusion Filter in ParaView

3-D Text Created by Linear Extrusion Filter
3-D Text Created by Linear Extrusion Filter

The Linear Extrusion filter uses the VTK filter vtkPVLinearExtrusionFilter. This filter is a modeling filter. The input to the filter is some polygonal data. It then creates a surface that is defined by translating the active data set along a vector. That is, the input polygonal data is swept along a vector. If the input data is a line, then new "swept" surface would be a quadrilateral. The output of the filter is polygonal data.

  1. First the user selects the data they wish to operate on from the Selection Window. It will be highlighted when this occurs.
  2. The user can then select Filter->Alphabetical->Linear Extrusion from the main menu.
    1. The user can select the extrusion scale factor in the Scale Factor box.
    2. The user can select the extrusion vector in the Vector boxes.
    3. The Capping checkbox toggles on/off whether the endcaps are drawn.
    4. The Piece Invariant checkbox toggles on/off whether ghost levels are processed.
  3. The Apply button must be pressed before the output will be generated.

The Linear Extrusion filter can be used to generate true 3-D polygonal text. This can be done by selecting 3-D Text from the Source menu, then extruding the text along a vector. Additional uses include 3-D bar charts and solid objects from 2-D polygonal meshes.

Some polygonal objects have no free surfaces, like a cone. When such objects are swept, two separate objects will be the output model.

Back to ParaView