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jp185088
05-05-2010, 04:41 AM
Hi,

I know this question I will ask is a dumb question for a guru in opengl but for me as a beginner in 3d, this question is so much helpful in my learning process.

Do you know where's the center of a 3d object when you rotate it left, right up or down?

ZbuffeR
05-05-2010, 05:43 AM
Rotation center is always at 0,0,0. So to rotate about a different center, you have to also apply a translation.

jp185088
05-05-2010, 07:35 PM
thanks for the reply.

I have another question.

Is nvsg also an opengl? Because i heard a group said that they were working with opengl but they're using an nvsg sdk. Are they just the same?

ZbuffeR
05-06-2010, 01:28 AM
NVscenegraph is an SDK that uses OpenGL under the hood and simplify scene management and bring a toolbox to simplify development, AFAIK.
http://developer.nvidia.com/object/scenix-home.html