How to convert a Matrix4 or Quaternion to angle in degrees

Question

I'm asking if anyone could help me in converting a Matrix4 or Quaternion to angle in degrees, I'm working on Kinect windows SDK 1.5 using C#, the sdk 1.5 provides the joint orientation but only in Matrix4 or Quaternion and i need the angles in degrees.

Check out this question: stackoverflow.com/questions/4435199/quaternion-to-angle. — wquist
– wquist, Commented Jun 18, 2012 at 4:03

Javier Sánchez · Accepted Answer · 2015-06-12 17:47:03Z

2

Well, the numbers in quaternions and matrix4 are cosines. Therefore, the following functions solves it:

Function cs_a_gr(cose)
    Return 180 / PI * Acos(cose)
End Function

answered Jun 12, 2015 at 17:47

Javier Sánchez

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