How do I create a camera?

Posted by Morphex on Game Development See other posts from Game Development or by Morphex
Published on 2014-06-05T23:48:50Z Indexed on 2014/06/06 9:42 UTC
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camera

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matrix

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quaternion

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sharpdx

I am trying to create a generic camera class for a game engine, which works for different types of cameras (Orbital, GDoF, FPS), but I have no idea how to go about it.

I have read about quaternions and matrices, but I do not understand how to implement it. Particularly, it seems you need "Up", "Forward" and "Right" vectors, a Quaternion for rotations, and View and Projection matrices.

For example, an FPS camera only rotates around the World Y and the Right Axis of the camera; the 6DoF rotates always around its own axis, and the orbital is just translating for a set distance and making it look always at a fixed target point.

The concepts are there; implementing this is not trivial for me.

SharpDX seems to have has already Matrices and Quaternions implemented, but I don't know how to use them to create a camera.

Can anyone point me on what am I missing, what I got wrong?

I would really enjoy if you could give a tutorial, some piece of code, or just plain explanation of the concepts.

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