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Xna 4.0 Creating BoundyBox

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I have read how other people have done theirs and understand how it works but when i have tried to implement it myself it seems to be the wrong verision of Xna or either the box is half the size. Is there simple code to do this?

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How exactly does the XNA's built-in BBOX functionality not work for you ?

 

Before XNA, when I implemented BBOX functionality myself, the basic algorithm is very simple - browse through all vertices and find the Max/Min for X/Y/Z.

 

Obviously, if you want the smallest sphere possible to encompass the same volume, the computations get more complex.

 

But the method I described above is, like, half a page worth of code...

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