Curves and surfaces inverted for circles in the menu !

Support Basics & Interface
1

Hi !

I don’t use curves a lot, so I didn’t notice this before.

I needed a particular path, so I opened the curves menu, and selected NURBS Circle.

I noticed that the circle was filled ! Strange. :-?

I selected Curve BEZIER Circle and found a filled circle too…

Then I checked the Surface menu for NURBS Circle and found a circle (not filled), without surface… :o

For circles, the menu seems to be inverted between curves and surfaces !

I have never read about this problem here…

What do you think about that ?

Is it a bug or am I misunderstanding something ? %|

Philippe.

2

That’s the normal behaviour.

Closed CURVES in Blender and in Solid View behaves like surfaces, i.e. the area within the curve exist.

The Doc is quite clear on this :slight_smile:

Stefano

3

Thanks for your response S68.

I have read the doc again.

Your right for the behaviour of the circle in the Curve choice, but I can’t understand why when you select NURBS Circle in the SURFACE sub menu
, you do not get a surface !

The circle is not filled, so I can’t see why it is called a surface !

Philippe.

4

The circle is not filled, so I can’t see why it is called a surface !

It is a surface because it is used for skinning.

GreyBeard

5

A “Curve” in blender is just a line. if it’s closed and planar (with the 3D button turned off) then it can be filled, but otherwise it is just a path.

A “Surface” is a similar to a curve, but rather than having all the points in a line, they are arranged into rows and columns, as a 2D sheet (if the loops are closed you get a tube rather than a sheet). Each Surface circle you add is merely one row of that surface, you need to add several and join them together (select and press F) to get the second dimension on the shape.

6

Thanks all for these explanations !

As said previously, I have not used a lot curves, except for path in animations…

Philippe.