Mathieu Chamagne

I need to perform a quat to euler conversion on a jit.matrix.

Unfortunately, and despict of the jit. prefix, jit.quat2euler only works with a list of values, not a matrix.

I guess that some jit.gen code could do the job, but it's beyond my skills :-s

(this would imply that this jit.gen would receive a 4 planes matrix (quat) and output a 3 planes matrix (xyz angles) ; I think that's not possible... it would probably output a 4 planes matrix, and a jit.pack 1 @jump 3 would be needed after the jit.gen conversion.)

make jit.quat2euler / euler2quat / quat2axis / axis2quat accept matrix input / output

I need to perform a quat to euler conversion on a jit.matrix.
Unfortunately, and despict of the jit. prefix, jit.quat2euler only works with a list of values, not a matrix.

I guess that some jit.gen code could do the job, but it's beyond my skills :-s
(this would imply that this jit.gen would receive a 4 planes matrix (quat) and output a 3 planes matrix (xyz angles) ; I think that's not possible... it would probably output a 4 planes matrix, and a jit.pack 1 @jump 3 would be needed after the jit.gen conversion.) 

Maybe it could be a FR : 
make jit.quat2euler / euler2quat / quat2axis / axis2quat accept matrix input / output
(or add a @matrix_mode attribute ?)

Help please !

I need to perform a quat to euler conversion on a jit.matrix.
Unfortunately, and despict of the jit. prefix, jit.quat2euler only works with 

jit-quat2euler-for-jit-matrix

(disclaimer: i have no idea what i did, i just translated this from the c++ source on the 

. Not sure about output from pitch because of not knowing how "copysign" in the original code really works. I mean wouldn't this always be positive in this case?)

(disclaimer: i have no idea what i did, i just translated this from the c++ source on the wikipedia. Not sure about output from pitch because of not knowing how "copysign" in the original code really works. I mean wouldn't this always be positive in this case?)

but this doesn't seem to work, it outputs very different result, compared to jit.quat2euler :

based on the code found in this thread : 

https://cycling74.com/forums/how-to-mix-eul-quater-maths-and-motion-sensors

(including a jit.gen codebox version, probably more efficient :-)

based on the code found in this thread : https://cycling74.com/forums/how-to-mix-eul-quater-maths-and-motion-sensors 
here is a working jit.gen quat2euler :

jit.quat2euler for jit.matrix