In your XNA project, you want to have access to the position of each vertex inside your Model
during runtime. This can be required if you need to do some very precise collision detection or
if you want to find certain points of your Model.
Although you can access the VertexBuffer of your Model from your regular XNA code, this
approach requires a lot of clumsy code and slows down your application because the vertex
data needs to be transferred from your graphics card to your main system memory.
The Solution
Extendthedefault ...
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