Flatten & Map (c-Hooks)

[Toonz]

Ok, I have a dilemma that I can't figure out. In recent time I've had several occasions to use the Flatten C-Hook and the Map C-Hook as well.

 

Here's the situation. I flattened a surface. I verified the flattened size and it comes out right. However, there is a cutout on the curved surface. When I do a "Map" of the cutout to the flattened surface, it comes out about 2 1/2" short in the height of the cutout.

 

Now here's the caveat. I have 5 similar files all with the same basic properties as described above. Only one of them gives me this erroneous result. It also does it repeatedly, as I have gone to the extent of recreating the surfaces.

 

Can anyone possibly explain this? Is there something I am missing? Is there a rememdy for this result?

[John Summers]

Surfaces that have been extended don't behave well for MAP.DLL. Surfaces with sections that are equally spaced work the best. I'll look at the surfaces if you want. I need a good one and a bad one.