Problems with not convex parts

[pierrot1951]

Hello

I tried to modelize harbour docks with an only part.

1/ I tested with drawing a template in horizontal plan, following a bakground map; then extruding vertically 3m; it failed: hollow parts (=water) are not cut in the main part.

2/ I tested with a tube: 1 section, 3 m high; 20 points that I drag on my background; same result!

Is FSDS able to use not convex parts, or is it impossible?

I finally succeeded by using and assembling about 12 parts (all convex 4 sides polygons).

Thanks for answer.
Pierrot - FMEP

 

[Farfy]

I am not 100% sure I understand what you want to do.
If you want to bend a single polygon, then I think the answer is no,
But if you just want to make a curved object that would look like a dock, then yes.
Make a four sided Tube ( Point/Section), radius and Length would be what ever size you like, and the more “Sections” you make it the smoother the bend you can make, But the more polygons you have. Then you bend it. If unsure how to bend a tube there are a few tutorials on this.

Farfy

 

[pierrot1951]

Hello
Sorry not to have answered so far. I had to take some time for pics.

Curiously, we can bend objects and create concave parts (I had a former post about creating curbs).
It seems that FSDS have unpredictable results with concave parts when working with tubes or extrusions: impossibility of creating a correct "I" shape rail beam by extruding a "I" template.

Joined 3 examples:
1/ concave part correctly created (1a-1b)
2/ concave part created, but wrong (2a-2b)
3/ concave part ignored (3a-3b)

Thanks for explanations about using convex / not convex parts in FSDS if possible.

Pierrot - FMEP

Pierrot - FMEP

 

[pierrot1951]

Following for remaining 3 pics (respectively created objects)