View Full Version : where's the center

05-05-2010, 03:41 AM

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?

05-05-2010, 04:43 AM
Rotation center is always at 0,0,0. So to rotate about a different center, you have to also apply a translation.

05-05-2010, 06:35 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?

05-06-2010, 12:28 AM
NVscenegraph is an SDK that uses OpenGL under the hood and simplify scene management and bring a toolbox to simplify development, AFAIK.