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Create Boolean objects

In Lesson three, you'll add some interest to the foreground of the scene by creating a lake. You'll use a negative Boolean operation to 'cut' a hole in the ground plane. The negative Boolean operation requires a positive object and a negative object. When these are grouped together, the shape of the negative object is cut out of the positive object.

To set the landscape as a positive Boolean object

  1. Click the Display modes icon Indicates rendered scene and toggles to wireframe mode on the Advanced display palette to switch from Bitmap display mode to Wireframe display mode.
  2. Press Command\Control + A to select the terrains and the ground plane.
  3. Click the Edit attributes button Lets you edit the attributes of an object, located on the right side of the object, and enable the Positive option.

To group the terrains

  1. Click the Group objects button Lets you group two or more objects, located to the right of the object.
  2. Click the Edit attributes button, and enable the Positive option again.
  3. Click OK Lets you close a dialog box and apply changes.

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