• Where to find it:

• NodeGraph / Right Mouse Click / Add Nodes / Math / Extension Pack / A /

The signs of y and x are used to determine the quadrant that the angle lies in.

The value returned by atan in this case is in the range [−π,π]. The result is undefined if x=0.

https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/atan.xhtml

• Y

Specify the numerator of the fraction whose arctangent to return.

• X

Specify the denominator of the fraction whose arctangent to return.

• Output RGB

Separate computation for Input Channels Red, Green, Blue with an Alpha Channel of 1.0

• R

Computation for Input Red channel only, saved into R, G and B channel with an Alpha of 1.0

• G

Computation for Input Green channel only, saved into R, G and B channel with an Alpha of 1.0

• B

Computation for Input Blue channel only, saved into R, G and B channel with an Alpha of 1.0

• A

Computation for Input Alpha channel only, saved into R, G and B channel with an Alpha of 1.0