View source for Rotational Axis

These axis describe movement in space within an [[RT3D]] engine. 


= Pitch, Yaw, and Roll =
Pitch is red, yaw is green, and roll is blue.

[[image:pitchyawroll.gif|thumb|Rotational Axis <BR> Image by [http://wiki.polycount.com/EricChadwick Eric Chadwick] ]]

'''Pitch'''

Most RT3D engines count from 90 to -90 degrees, starting out pointed straight up, turning downwards and ending pointed straight down. If you nod your head "yes," this is pitch in action. Straight forward is 0 degrees. Also called declination.

'''Yaw'''

Most RT3D engines count from 0 to 360 degrees, starting out pointed straight forward, turning clockwise and ending pointed straight forwards again. If you shake your head "no," this is yaw in action. Straight forward is both 0 and 360 degrees. Also called azimuth.

'''Roll'''

Most RT3D engines count from -180 to 180 degrees, starting out twisted upside-down all the way to the left, turning clockwise and ending twisted upside-down all the way to the right. If you tilt your head to read the spine of a book, this is roll in action. Straight forward with no roll is 0 degrees.

----
[[Category:Glossary]]