I’m building a complex surface from a bunch of curves. The Patch command seems to work best. In order to make what I am doing work, I’m using high values of U and V spans … on the order of 50 or 100.
I have noticed that when I set the values high, Rhino reduces them in a complex way. For example: If I set U-spans high, the value shown in the parameter box remains the value I set, but the value used seems to be smaller. And the next time I use Patch, the initial values that appear in the parameter box (which I guess are the values from the last time I used the command) are smaller than what I set. Maybe the V-spans parameter changes, even though I just changed the U-spans parameter.
I’m typing from a PC without Rhino on it, so I can’t give an exact example right now… But try using Patch and setting U-spans and V-spans to 100. What happens? Finish that patch command, and then start Patch again. What do you see as initial values in the parameter box?
Can someone please clarify what is going on?