Default new surfaces to outfacing normals from my viewpoint (active viewport)

Rhino Rhino for Windows
1

When I’m reating/recrating patches on open surfaces teh normal direction of the nexw geometry is random, so I have to be ‘flipping out’ half of the time, instead of acting normal :smile:

I want Rhino to be smarter. See example…

(if you see orange, it means that’s the backface color)

Thanks,

G

2

Hi G
What would be smart?
Would it be that when edges are used as input, they set (in a democratic way) the direction of the new surface?

Or should it go as far as setting direction based on camera/viewport.

-Willem

3

this>>>>

4

Hi Willem,

I wanted to ask you about this issue. It seems that no matter which sequence I select curves in I will more often than not get a surface that’s inside out. Is there a setting that would make the backfaces not display towards the camera?

Medallion.3dm.zip (1.6 MB)

5

Backface rendering options (per display mode) are found here:

Pasted image1044×178 13.6 KB

6

Or is there a command that can Analyze all face directions at once? Then flip all to camera as you stated? —Mark

7

Thanks Wim, but that just changes the color not the orientation as far as I can see.

8

@JKayten Why is the normal direction important to you? Any reason not to use Dir to check the direction and then use the Flip option if needed?

9

I’m not sure. At some point I read something and concluded it was a good practice to be aware of it. Maybe its a waste of time. I already have a quick flip direction tool handy but I get tired of the extra effort.