Limit a 3D Model in the Direction of a Slanted Planar Surface

You can limit the visibility of a shaded model on a slanted planar face selected from the model. In order to select a slanted surface, you need to remove one or more faces from the polyhedron rendered around the model. Limit a model in the direction of a slanted surface as follows:

  1. Select View | Limiting | Set. More options...Less options...
    • (OR) Select Set 3D Limits from the tool strip.
    • (OR) Select the context-sensitive function Set 3D Limits in the model window.
  2. Move the cursor to the polyhedron face whose removal will allow you to indicate the slanted face.
    Figure 1: The topmost face is removed.
  3. Press the Delete key. The face will be removed, allowing you to select the slanted planar face. If necessary, you can remove more than one face from the polyhedron.
  4. Select the slanted face as the limiting face.
    Figure 2: A slanted surface is selected from the model.
  5. Move the limiting face, using the mouse.
    Figure 3: The limiting face is moved to the desired position.
  6. Select the limit point by clicking the left mouse button.
    Figure 4: The limit point is selected and the model is cut.
  7. If necessary, select a new limiting face from the model and limit the visibility in the selected direction.
  8. Confirm the 3D limiting by pressing the middle mouse button.