Delphi code for reading a .ply file

[dummzeuch 1392]

Does anybody know about (preferably free) Delphi code for reading a .ply (Polygon) file? I'm most interested in the binary format but if the code can also handle the text format that would be a plus.

I'm about to write this myself but I don't want to reinvent the wheel.

[programmerdelphi2k 235]

@dummzeuch

I dont know this format, but here have a sample in C step-by-step (if help you)

https://imkaywu.github.io/blog/2016/04/ply/

[DelphiUdIT 132]

You can try to see if you find anything useful in this project. It can open and view various graphic formats (including "PLY"). It is possible that something is also exposed on pascal the "PLY" and not only in DLLs.

 

https://sourceforge.net/projects/glscene/files/GLScene/GLScene v2.2/

 

[dummzeuch 1392]

12 hours ago, DelphiUdIT said:

You can try to see if you find anything useful in this project. It can open and view various graphic formats (including "PLY"). It is possible that something is also exposed on pascal the "PLY" and not only in DLLs.

 

https://sourceforge.net/projects/glscene/files/GLScene/GLScene v2.2/

 

This looks promising:

 

https://sourceforge.net/p/glscene/code/HEAD/tree/trunk/Source/GLS.FilePLY.pas

 

Thanks

 

Edit: This seems to only read PLY files in text format.

Edited June 30, 2023 by dummzeuch

[DelphiUdIT 132]

3 hours ago, dummzeuch said:

Edit: This seems to only read PLY files in text format.

I have no other suggestions, sorry.

I had used that package several years ago only for the purpose of displaying various graphic formats in an application (and I had to display just a PLY coming from a 3D scanner).

 

Good luck

Edited June 30, 2023 by DelphiUdIT

[shineworld 68]

GLScene PLY importer is VERY limited and only ASCII.
It reads points for triangles and does not support NORMALS.

It is so close to STL format...

Meshlab sources (in C++) can be useful to check how to read it.

[David Heffernan 2300]

6 hours ago, dummzeuch said:

This looks promising:

 

https://sourceforge.net/p/glscene/code/HEAD/tree/trunk/Source/GLS.FilePLY.pas

 

Thanks

 

Edit: This seems to only read PLY files in text format.

Does the C library handle binary format?

[shineworld 68]

PLY is "ASCII" if you read the specifications.
Sorry for the previous wrong text... sometimes I write very bad English...
 

[dummzeuch 1392]

2 hours ago, David Heffernan said:

Does the C library handle binary format?

Which C library?

[dummzeuch 1392]

2 hours ago, shineworld said:

PLY is "ASCII" if you read the specifications.
Sorry for the previous wrong text... sometimes I write very bad English...
 

Wikipedia says otherwise:

https://en.wikipedia.org/wiki/PLY_(file_format)

"There are two versions of the file format, one in ASCII, the other in binary."

[shineworld 68]

1 hour ago, dummzeuch said:

Wikipedia says otherwise:

https://en.wikipedia.org/wiki/PLY_(file_format)

"There are two versions of the file format, one in ASCII, the other in binary."

You are right ! ... I've missed WIKI 🙂

 

https://github.com/neurolabusc/plyview/blob/master/mesh.pas
LoadPly procedure for ASCII and BIN

Edited June 30, 2023 by shineworld

[David Heffernan 2300]

One was mentioned above. But there are lots. This looks solid

 

https://github.com/vilya/miniply