Why in undistSphIm.m xi1 is equal zero?

[InfiniteLife]

here:

DeepCalib/undistortion/undistSphIm.m

Lines 28 to 31 in b9b5fc3

	xi1 = 0;
	alpha_cam = ( xi1.*Z_Cam + sqrt( Z_Cam.^2 + ...
	( (1-xi1^2).*(X_Cam.^2 + Y_Cam.^2) ) ) ) ...
	./ (X_Cam.^2 + Y_Cam.^2 + Z_Cam.^2);

is it supposed to be predicted distortion coefficient or is it just 0? I dont understand why we are having trouble to square 0 and multiply previously created arrays by zero.

[alexvbogdan]

Thank you for pointing it out, it is just a redundancy. Everything is correct in that code.