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FireSoul

How to create a bounding box?

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Hi, I need some help in how to create a bounding box for any object. I was hoping for a function that could be run before the game starts, and could generate a bounding box for any object. One method i could see, is to go through all of the objects vertices and find the max and min points in the x,y and z planes. From these max and mins i could create a cuboid around the object. Is there a better way? or is the above method fine?. If the above method is fine, could someone please show me how it could be done. Any help is appreciated.

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hi,

I don't usually say that, but read the manual (DirectX help) : D3DXComputeBoundingBox(...) takes a pointer to an ID3DXMesh interface and builds an axis aligned bouding box.
And if you're not using DirectX meshes, then the method you mentioned is good. Just lock your vertex buffer, parse all the vertices to find the max / min values along each axis.

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The DirectX help file which is given with the sdk. (directx_something.chm)
or just entering D3DXComputeBoundingBox in google, you'll find the description of the function on the MSDN website

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