How Sporph works?

Hey Guys,

I am trying to generate a facade based on image, and on Sporph process I meet some problems.

Pls see my attachment, there is what I want:

  1. Wanna each panel is not planer, so I unrolled the Srf and trying to Sporph it back.
  2. Wanna all panels fully occupy the target Srf, instead of leaving some gaps on Edges.

The main problem is when I change the parameter to control the resolution of panels, sometimes the Sporphed outcome have some part remain on original Srf.

William (490.0 KB)
Thus I am quite curious about how Sporph works, and why this situation would happen.

Thanks for your insight in advance,