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[SDL] MouseMotion

Started by VitaliBR Jul 4, 2010 at 10:39 PM 1 reply 950+ views

Original Post

Jul 4, 2010 at 10:39 PM

Hi!

I searched a lot about, but found nothing detailed about the function SDL_MOUSEMOTION.

I know he provides four values, they being the mouse position absolute (x and y) and x and y relative.
But do not get it until now, it is this value 'relative' of X and Y?

Neither the SDL documentation explains

Thanks

magorian

Jul 5, 2010 at 7:30 AM

The relative value is relative to the cursors last position. So if the user moved his cursor 10 pixels to the right, the relative X value of the event would be 10. If he moved the cursor 15 pixels to the left, and 26 pixels down the relative X would be -15 and the relative Y would be 26.

Hope this helps :)

VitaliBR

Author

VitaliBR

Jul 5, 2010 at 9:26 AM

Thanks! I understand.

I'm trying to use this function to move(w/ mouse) my camera with OpenGL.
If anyone know any tutorial or example of how to do this thanks.

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