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rotation problem

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Hello!
I wish to rotate a model around it's center(ex. rotate a planet around it's axis) but all that i can find regarding rotation is the Matrix.CreateFromYawPitchRoll which rotates the model around the position Vector3. Can anyone please help ?!

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Quote:
Original post by badescuga
I wish to rotate a model around it's center(ex. rotate a planet around it's axis) but all that i can find regarding rotation is the Matrix.CreateFromYawPitchRoll which rotates the model around the position Vector3.
CreateFromYawPitchRoll() doesn't rotate around an arbitrary position. But, the math library you're using should include a function for building a matrix from an axis-angle pair, which may be what you're wanting.

That said, by combining transforms appropriately, you can in fact use CreateFromYawPitchRoll() to effect a local-axis rotation, so if you're wanting to rotate the planet about one of its local basis vectors, you can still use this function.

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