How does Rhino determine Create UV Curves orientation?

Rhino Rhino for Windows
1

I am wondering how Rhino determines how the curves will be oriented when using Create UV Curves? In the picture, I believe the two blue curves are matching curves. I was expecting that blue curve to appear on the left. Thanks!

UV Curves
UV Curves1441×878 98 KB

2

Hello- U should correspond to X, V to Y.

image
image1011×585 118 KB

-Pascal

3

Thank you for the reply. One follow up question- is there a reason Rhino places the ellipse in your example far down the X axis instead of near the origin? Is there a reason it is unwrapped in that direction?

4

Hello - the direction arrows show the + U (red) and +V (green) directions - the hole is near maximum U and minimum V - does that make sense?

-Pascal

1 Like
5

I understand now. Thank you so much!