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view frustum culling

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Hi,

how do I do view frustum culling of spheres in view (eye) space?
(where a sphere is defined by its center and radius)

Best regards,
Yours3!f

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So I've read all three approaches on Lighthouse. The first (geometric) and the last (radar) aren't very convenient for my case, I'd have to do lot of calculations to perform them.
However the radar's near and far plane checks are very easy for my case, so I implemented them.
The remaining 4 planes are still there, and the remaining approach is in clip space. So is the clip space approach also true in view space? If not how can I extract the plane normals in view space?

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seems like I found the solution:
http://www.emeyex.com/site/tuts/FrustumCulling.pdf

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