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Zmurf

OpenGL Axis Confusion !?!?!?!?!?!?

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Could somone give me a quick rundown or diagram of how the axis work in OpenGL? I thought they were like this: .............-y....-z......... ..............|..../.......... ..............|.../........... ..............|../............ ..............|./............. ..-x______|/_______ x... ............./|............... ............/.|............... .........../..|............... ........../...|............... ........./....|............... ........z.....y............... (This never comes out the way i make it in the editor ><) Bah, I'm so confused by this!

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+x = right
+y = up
+z = towards you

goto www.opengl.org download the faq + also the opengl spec
buy a couple of books to eg the red book

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In OpenGL you can set axis as you want; you have complete control on the axis!

However the standard notation is the 'right-hand' one: if you look at the monitor you have x going right, y up and z exiting from it

If you dont like y going up simply glScale(1,-1, 1) !

Also remember that GL stores matrices in the transposed math notation (I dont know the right term and there is always a confusion about it).
In this notation the products are to be performed in the reverse order (because the final result must be the same) so you must understand that the first operation you perform is the last you specify
Example

glTranslate()
glRotate()
glDraw()

First rotate then translate

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