Problem in roll[SOLVED]

[Freedom911]

Hello guys .I am facing problem with roll .
When I write

Code: Select all

headNode->roll(Ogre::Degree(90));

then the ogre head should rotate 90 degree clockwise but it is rotating 90 degree anticlockwise.I have attached the photo of it .It would be nice if someone explains it also +90 degree means rotation in anticlockwise direction in vectors then why does ogre uses clockwise .

[Transporter]

Hi,

have a look at http://www.ogre3d.org/tikiwiki/Basic+Tu ... #Rotations and http://www.ogre3d.org/tikiwiki/tiki-ind ... ngle+Class. I hope this helps.

Regards,
Transporter

[Freedom911]

Thanks for the reply but I didn't get it +90 means positive rotation around z axis means clockwise so ogre head should me rotated clockwise like in this pic

[Freedom911]

Oh i got it thanks

[Kojack]

Ogre uses a right handed coordinate system with +z pointing back and +Y pointing up.
The easy way to remember how the rotations work in a right handed system is to aim your right thumb in the direction of the axis you want to rotate around. The direction your fingers curl to make a fist is the direction of a positive rotation. So for a roll (rotation around +Z), aim your right thumb at yourself. Your fingers are curling anticlockwise.