Search altitude should influence how fast the pipeline is detected

[Rezenders]

Right now, the altitude only influences if the pipe can be detected or not. Thus, an ideal solution would to be to always use the lower altitude. I suggest changing the width of the spiral according to the altitude, higher altitude results in a bigger width. Or maybe make the threshold in the pipeline detection bigger with higher altitudes.

[Rezenders]

Or maybe make the threshold in the pipeline detection bigger with higher altitudes.

Included in f4632e2

[Rezenders]

I suggest changing the width of the spiral according to the altitude, higher altitude results in a bigger width.

Included in a8f3636