Comments and answers for "How to create an arch solid - arch roof?" https://knowledge.safe.com/questions/39841/how-to-create-an-arch-solid-arch-roof.html The latest comments and answers for the question "How to create an arch solid - arch roof?" Comment by anhphanuet on anhphanuet's comment https://knowledge.safe.com/comments/39944/view.html Hi @takashi
My problem is the nodes were not on straight lines in 2D.
Thank you so much for pointing it out! Tue, 14 Feb 2017 15:02:14 GMT anhphanuet Comment by takashi on takashi's comment https://knowledge.safe.com/comments/39880/view.html Your approach looks good, but I think it requires some conditions to work as expected.
  • The lines should be ordered from an end to another end of the roof.
  • The lines all should orient the same direction.
  • The start/end nodes of the lines should be on straight line in 2D.
Make sure if the lines satisfy those conditions. If a condition is not satisfied, the translation could fail.
 Mon, 13 Feb 2017 15:42:46 GMT takashi Comment by anhphanuet on anhphanuet's answer https://knowledge.safe.com/comments/39879/view.html
Hi @takashi, i did created an arch RoofSurface using TINGenerator. I'm making GableWall surfaces by using:
-Snipper to find the first point and the last point of each line and they'll be on 2 sides of the roof solid (GableWall surface)
- PointConnector to make line from those points on each side.
- LineCloser to make GableWall polygons
I made a mistake but i can't figure it out!
Here's my workspace.

Thank you so much for your guidance and support!
 Mon, 13 Feb 2017 15:20:05 GMT anhphanuet Answer by takashi https://knowledge.safe.com/answers/39849/view.html

Hi @anhphanuet, the coordinate system of your sample dataset is unknown so it cannot be reprojected properly. I tried scaling it with multiplying X and Y by 50000, and found the data seems not to be an arch roof. It looks like this.

That aside, it's possible to create a solid based on a series of roof edge features (lines), but it would be a long story. The summary of a possible way is:

  1. Sort the roof edge features (lines) with the spatial order from an end to another end of the roof.
  2. Create all boundary surfaces (top, bottom, and walls) for the required solid based on the lines.
  3. Finally build a BRepSolid (boundary representation solid) from the boundary surfaces.

See the attached workspace example (FME 2016.1.3): create-arch-roof-solid.fmw

The workspace contains a custom transformer that creates a sample dataset.

Hope this helps.

 Mon, 13 Feb 2017 06:37:57 GMT takashi Comment by anhphanuet on anhphanuet's comment https://knowledge.safe.com/comments/39843/view.html Hi @takashi, i am sorry for my mistake. i did repost it!
 Sun, 12 Feb 2017 11:05:47 GMT anhphanuet Comment by takashi https://knowledge.safe.com/comments/39842/view.html 你好< rel = "用户" href = " /用户/ 4933 / anhphanuet.html" nodeid="4933">@anhphanuet, a Shapefile dataset consists of at least 3 files - *.shp, *.shx, and *.dbf, but I was not able to find *.shx and *.dbf in your sample data. Can you post the sample data including those files again?
 Sun, 12 Feb 2017 10:13:43 GMT takashi