Which surface is better?

@shayan wrote:

Hi dears
I have two question:

First question

If i want to create single-span surfaces for a car hood witch way is Better?

1. First way(as you see in the picture below)
   
   1234.jpg4000x1920 643 KB
   
   1.create surface from four single-span curves(1,2,3,4,) with EdgeSrf command
   2.Mirror surface
   3.Match surfaces with G2 continuity (average surface)
   4 . Split surfaces with curve number 5

In this way we have good reflection of surface but top edge have many control points so top edge is not a single-span

1. Second way(as you see in the picture below)
   
   12.jpg1920x1080 182 KB
   
   1.create surface from four single-span curves(1,2,3,4,) with EdgeSrf command
   2.Mirror surface
   3.Match surfaces with G2 continuity (average surface)

In this way we don't have good reflection but top edge is a single-span

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Second question

In first question ( first way) :top edge wasn't a single-span,is it causing that our surface doesn't a single-span surface?

Thanks

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