I have trouble finding the rotation angle for a cylinder (which is to be a screw hole). I have the start coordinates and almost a destination point. Not exactly, but did tests with points nearby the intended target. No way the cylinder goes thru. Tried angles normalized, unnormalized, all the 6 permutations of the output, nothing works. I wrote something like this: `function NormalizeAngle(x) = iif(x<0,180+abs(x),x);` `function GetRotationAngles3d(point,pole)=` ` let (` ` aXY=NormalizeAngle(atan2(point[1]-pole[1],point[0]-pole[0])),` ` aXZ=NormalizeAngle(atan2(point[2]-pole[2],point[0]-pole[0])),` ` aYZ=NormalizeAngle(atan2(point[2]-pole[2],point[1]-pole[1]))` ` )` ` [aXY, aXZ, aYZ];` ` ` `function GetRotationAnglesForRotate(point,pole)=` ` let (` ` temp=GetRotationAngles3d(point,pole)` ` )` ` [temp[0],temp[1],temp[2]];` Where am I wrong ? How can I get the rotation angles ?