CHAPTER 4 ■ WORKING WITH MODELS
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4-16. Store Multiple Objects in the Tag Property by
Defining a Custom TypeWriter and TypeReader
The Problem
To allow your Model processor to store objects inside a Model and pass it to your XNA proj-
ect, XNA provides the Tag property of a Model. As shown in recipes 4-13, 4-14, and 4-15, this
Tag property is quite useful to store an array of objects of the same type, such as an array
of Vector3s or Triangles. But often you’ll want to pass multiple objects, such as the list of
Vector3s together with the global BoundingBox of the Model.
The Solution
Define a custom class, capable of storing all objects you want to pass. Inside your Model pro-
cessor, create a new object of your class, and fill it with anything ...