LibreDWG with fpc?

[zamtmn]

Hi!
Does anyone use LibreDWG to read/write DWG files?
Usage examples?

[MarkMLl]

Use the forum search facility, it's been discussed a couple of times.

MarkMLl

[zamtmn]

I have not find meaningful discussions, just the name was mentioned several times

[MarkMLl]

...by yourself in at least one case. Sorry, I should have followed through the context more.

MarkMLl

[zamtmn]

Ok. I'll try to do something https://github.com/zamtmn/fpdwg

[amir.eng]

Hello zamtmn,

I need a library to read/write DWG via Lazarus too , and I have been looking for it for years , but I couldn't find anything.
Let me know if you find any usful things.

Thanks in advance.

[zamtmn]

amir.eng
LibreDWG, according to my observations, is managed with non-complex files. I managed to read the file and iterate through all the objects in it. I haven't tried write dwg yet. There is a difficulty in translating headers - macros are actively used

[amir.eng]

amir.eng
LibreDWG, according to my observations, is managed with non-complex files. I managed to read the file and iterate through all the objects in it. I haven't tried write dwg yet. There is a difficulty in translating headers - macros are actively used

I dont need all library of LibreDWG, I need it only for points, assume there is a point includes X,Y,Z and I want to create a simple dwg for the coordinate via lazarus.

[zamtmn]

Unfortunately, everything has been done in dwg to complicate it third-party use.
You can write the reading yourself by spending a lot of effort. I tried, it's hopeless. Only use ready-made tools with their problems and limitations((

[alaa123456789]

i was looking for Autocad solutions and found something called .scr files which is scripting language in autocad here some sample
https://www.researchgate.net/profile/Mahesh-Luintel/publication/332493976_USE_OF_SCRIPT_FILES_IN_AUTOCAD/links/5cb7e8e7299bf120976cd8e6/USE-OF-SCRIPT-FILES-IN-AUTOCAD.pdf

maybe you could do more research and make demo
thanks

[zamtmn]

i was looking for Autocad solutions and found something called .scr files which is scripting language in autocad here some sample
https://www.researchgate.net/profile/Mahesh-Luintel/publication/332493976_USE_OF_SCRIPT_FILES_IN_AUTOCAD/links/5cb7e8e7299bf120976cd8e6/USE-OF-SCRIPT-FILES-IN-AUTOCAD.pdf

maybe you could do more research and make demo
thanks

these are all half-measures, we need the ability to fully read and write dwg

[loaded]

If a solid source with specifications for the dwg format is found, it can be read in binary format. I think it is not very difficult, but it will definitely take a lot of time and effort.
Not now, but at a convenient time, I intend to read this format. (bottom of my To Do List) 

[krolikbest]

You may to convert a dwg to dxf

[zamtmn]

ODA DWG specs: https://www.opendesign.com/files/guestdownloads/OpenDesign_Specification_for_.dwg_files.pdf
Specifications are not complete, format is very complex, much has been done to make access difficult.
But yes, anything is possible. I once get access to primitives for DWG version 2000.

And now I think it's better to use a third-party library and help in its development than to do my own implementation