One of the this year's biggest fiction releases is now available in a gorgeous new collectible hardcover edition. Sunrise on the Reaping, the fifth novel in Suzanne Collins' best-selling dystopian ...

Some objects provide named attachable parts that you can select instead of using the main geometry for the object. One important kind of attachable part is the inside of a tube. The anchors are all on ...

In the example above, the cylinder's center point is attached to the sphere, pointing "up" from the perspective of the sphere's surface. For a sphere, a surface normal is defined everywhere that ...