Using Pick Objects

A pick object contains all the information necessary to calculate geometric intersections between the pick geometry and the objects in a model. To create a pick object, you need to fill out data structures with the appropriate information, including

• how the hits are to be sorted
• how many hits to return
• what information should be returned about any hits
• whether to pick whole objects or parts of objects
• how much tolerance to allow when calculating hits
• the pick geometry

The following sections illustrate how to perform these tasks.

Handling Object Picking

Handling Mesh Part Picking

Picking in Immediate Mode