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mazelle

Pitch, Yaw, Roll

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I'm having design difficulty regarding these three. So I'd like to ask what you guys do or what's the standard. When you say to yaw an object, do you mean they rotate on their current y-axis (might not be (0, 1, 0) due to previous orientation updates)? Or to rotate on (0, 1, 0) axis always regardless of their current orientation? (same question holds for pitch and roll)

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For Yaw-Pitch-Roll, each rotation is done in local space. That is, a roll rolls around the direction the pilot's facing, whether that's north or southeast or straight up. In other situations, however, one may have a set of three rotations which is considered to be performed in global space--that is, around the "north" axis, regardless of which direction the pilot's facing.

Interesting and important point: a particular set of yaw-pitch-roll in local space is identical to the same set of rotations in the other order (roll-pitch-yaw) in global space. This interesting identity is the source of a gigantic amount of confusion regarding order of transformations. Be aware of it.

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