Graphics Reference
In-Depth Information
Boolean union
The union operation is similar to
add
with one major difference. The resulting object
may look the same on the outside, but all of the unseen polygons and points have
been removed. Now, you are left with one object, which is the result of joining two
objects perfectly. In the preceding screenshot, the lower left image is the result of the
union operation.
Boolean difference
A difference operation is the complete inverse of subtract. When performing the
difference operation, the resulting object is only the
intersection
between the two
objects. On the lower-right section of the preceding screenshot, you can see the result
of the difference operation. Instead of cutting out the center of our octagon, we're left
with an object that would plug the hole perfectly from our subtract operation.
The shaker top
Now that you're an expert on Boolean operations, let's use them some more to create
our shaker top. Create a spheroid that envelopes the top of the shaker. The result
should look something like the following screenshot:
The process to create the shaker top
