some guidance to implement a specific use case

[MannusEtten]

hi,

I saw this library which is well maintained and i would love to use it. I do have a specific use case:

• i do have geospatial features (mainly polylines) in my postgis-database
• i would like to export those into a .dwg-file
• i would like to change some titles for block headers
• two versions (one without any attributes / one file with all the attributes from the table in the database)
• i do have a template-file (.dwt) and would like to apply the styling from this file into my new dwg

does anybody has some directions where to start and look?

[DomCR]

Hi @MannusEtten,

Sure thing, I think you can do it all:

i do have geospatial features (mainly polylines) in my postgis-database
i would like to export those into a .dwg-file

If you can access the db and retrieve the polylines you can translate them to the different types of polylines in ACadSharp, for example,

ACadSharp/src/ACadSharp/Entities/PolyLine3D.cs

Line 19 in c6a59ab

public class Polyline3D : Polyline<Vertex3D>

if you need to add the Z component or use LwPolyLine if you only need a 2D polyline, which is the latest version.

After that you just need to save the file using DwgWriter.

i would like to change some titles for block headers

If is the name, you can just read the file and change the name of the BlockRecord that you want.

two versions (one without any attributes / one file with all the attributes from the table in the database)

I don't quite understand this one, but it supports the modification of attributes in blocks if that is what you are referring to.

i do have a template-file (.dwt) and would like to apply the styling from this file into my new dwg

Using the DwgReader I think that you can access the information of a dwt file and get the styling that you want and import it into a dwg, for this one I might need to implement some new features to help you with that.

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If you need some code examples check:
https://github.com/DomCR/ACadSharp/tree/c6a59ab1b4d8a1afec81574676814d1629cf7c06/src/ACadSharp.Examples

There are some basic code snippets that you can use to start testing.

Let me know if this helps.