Working with Boole and Instance Objects
Fundamentals of Boole calculation
Many everyday objects can be created using primitives such as cylinders, spheres or cubes. Often enough, however, a corner must be trimmed or a hole added to an object in order to achieve the desired shape. If you want to do this using polygon tools the parametric objects must first be made editable (
In the top half of the image above, the two original objects that are used in the Boolean operation are shown prior to the respective Boolean operation being applied. From left to right: A without B; A intersect B; A subtract B. The remaining function, A union B joins both objects and deletes the inner polygons (the result would look exactly like the objects are in the top half of the image). The result is a "shell” made up of both objects.
The Instance Object
It is not always necessary to work with real objects. For example, Instances can serve as placeholders for objects or entire object groups. Instances have an advantage over copies in that they adapt to changes made to the original object by assuming these changes. Instances can be created individually by selecting the
The following example demonstrates how to model a pencil using the Boole Object, primitives and Instances. All pertinent object properties will remain editable.