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Chapter 27: Working with Compound Objects
4. Set the Operation to Cookie Cutter, and click the Pick Shape button in the Pick Operand roll-
out with the Copy option. Select the two interior shapes for the letter B. Then click the Select
Object button on the main toolbar again to exit ShapeMerge mode. Then repeat this step for
the letters O and P.
Figure 27.7 shows the finished logo. Notice that the letters have the interior sections removed.
FIGURE 27.7
The logo with the interior centers removed from extruded letters using the ShapeMerge object

Creating a Terrain Object

The Terrain object is a great object that enables you to create terrains from splines representing elevation
contours. These contour splines can be created in Max or imported using a format like AutoCAD’s DWG. If
the splines are created in Max, make sure that each contour spline is a separate object. The splines all must
be closed splines. If all the splines have an equal number of vertices, then the resulting terrain object is
much cleaner. You can ensure this by copying and scaling the base spline.
To create a terrain, create splines at varying elevations, select all the splines, and click the Terrain button.
The Terrain button is available only if closed splines are selected. You can use the Pick Operand button in
the Pick Operand rollout to select additional splines to add to the Terrain object. All splines in the object
become operands and are displayed in the Operands list.
The Form group includes three options that determine how the terrain is formed: Graded Surface, Graded Solid,
and Layered Solid. The Graded Surface option displays a surface grid over the contour splines; the Graded Solid

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