Question

Extrude surface

  • 5 August 2014
  • 6 replies
  • 17 views
H
Hi all,

 

Is anyone familiar with (reverse) extruding of a surface?

 

I want to extrude it down to 0 for the entire surface to get a firm base.

 

Doesnt seems to work with the extruder-transformer

 

 

Thanks

6 replies

G
Badge +3
How about exploding it (if it is a solid) and aquiring the bottomsurface (by z =0)?

 

 

 

If its not a solid, just extrude a bit, then explode then aqcuire bottom.
takashi
Rank
Userlevel 2
Badge +17
Hi,

 

 

You can use "Vector" mode as Extrusion Input By, and set an appropriate negative value to Extrusion Vetor Z.

 

 

Takashi
H
Thanks, but cant find any way to extrude a TIN surface. Works fine with triangles etc but not surface

 

Henrik
takashi
Rank
Userlevel 2
Badge +17
Combination of the GeometryCoercer (Geometry Type: fme_comoposite_surface) and the Deaggregator (Split Composites: Yes) can be used to decompose a TIN surface into individual triangle surfaces. And then, you can apply the Extruder.
H
Thanks Takashi,

 

It works to extrude them when they are splitted but still cant find a way to extrude them down to 0. The extruder only allows me to extrude to a value and since its triangles with 3 different z:s it still doesnt give me a fim base.

 

Henrik
takashi
Rank
Userlevel 2
Badge +17
hmm, I was able to extrude the surfaces to negative direction in both these cases.

 

-----

 

Extrusion Input By: Height

 

Extrusion Height: <negative value>

 

or

 

Extrusion Input By: Vector

 

Extrusion Vector Z: <negative value>

 

-----

 

FME 2014 SP2 build 14339

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