Hatch problem with closed curve

[Wagner]

Hi! Anyone know what is wrong with this?

Cant make hatch.

Offsets.

Same upper curve with connect command.

Curve boolean + hatch works normally.

Hatch problem.3dm (202.0 KB)

Using Rhino 6, waiting Rhino 9 release.

[martinsiegrist]

In the hatch command, Rhino 9 WIP detects a self intersection on the middle curve.

I think your shape should look like this:

Three closed curves…

Hatch problem_6.3dm (42.8 KB)

[Wagner]

Hi!

Thanks for your answer.

Those were the curves I already had.

I was just wondering why it did not work. Was it because curves were too close of each other?

Green one was nice closed curve without intersections (I did not find) … But it still said “Self intersecting loop was found. No hatches made”.

With red one it founds intersection (Yes there are some) and ask “Click inside regions to keep”. It does not make any hatches. If I choose all the regions, it makes the hatch but of course without holes…

[martinsiegrist]

I can’t try this in Rhino 6 but Rhino 9 WIP makes this one single hatch without clicking anywhere. In a similar way you cn create a planar surface because the commands evaluate what curve is inside another.