euler to quaternion. quaternion to euler

[Willi]

hi,

 

how i can convert euler angles (as angles, not radian) to quaternions and wise versa (quaternions to euler)?

is there a function in the sdk?

[nemyax]

The Quaternion class (ftp://ftp.hash.com/pub/Sdk/AMSDKDoc/classQuaternion.html) has a constructor that takes a RotateEuler (ftp://ftp.hash.com/pub/Sdk/AMSDKDoc/classRotateEuler.html) as an argument. And one degree equals (pi/180) radians.

[Willi]

thanx nemyax.

i found it. RotateEuler does the trick for converting from quaternions.

to quaternion i found something in Rotate.h, like this

 

Quaternion quat;

RotateEuler euler;

euler.x = 10; euler.y = 20; euler.z = 30;

if ( euler.z )

quat = YXZRotateQ( euler.y, euler.x, euler.z );

else

quat = YXRotateQ( euler.y, euler.x );

 

maybe this can be shorter like:

 

Quaternion quat;

RotateEuler euler;

euler.x = 10;

euler.y = 20;

euler.z = 30;

quat= Quaternion(euler);

[nemyax]

euler.x = 10;

euler.y = 20;

euler.z = 30;

These should be in radians.

[Willi]

this can be in degree, because YXZRotateQ converts degree to randians...

i tested it.

also RotateEuler euler(quat) converts quaternion (radians) to euler (degree).