Thank you for sharing your code (problem on parse rvm)

[hbssessa]

Dear cdyk, I am testing your code to parse a rvm file. However, I got the following error:

Failed to parse PDMS.rvm: In CNTB, unknown chunk id INSU [I] Stats: [I] Groups 593 [I] Geometries 570 (grp avg=1.0) [I] Pyramids 0 [I] Boxes 0 [I] Rectangular tori 0 [I] Circular tori 252 [I] Elliptical dish 0 [I] Spherical dish 0 [I] Snouts 4 [I] Cylinders 314 [I] Spheres 0 [I] Facet groups 0 [I] triangles 0 [I] quads 0 [I] polygons 0 (fgrp avg=-nan(ind)) [I] contours 0 (poly avg=-nan(ind)) [I] vertices 0 (cont avg=-nan(ind)) [I] Lines 0

as far as I understood, INSU is something which is parsed ParseRVM.cpp between the lines 302-317. Do you have any idea on how to skip this specific ID or parse it? Your support would be of great help, thank you very much in advance.

Best regards Salvo

[Rjvs]

@hbssessa any progress with this on your end? We are having the same problem.

From reading through other comments from @cdyk it looks like we will need to reverse-engineer the meaning of those chunks in order to parse them. Are you able to create files with specific INSU chunks to facilitate this?

[cdyk]

@hbssessa @Rjvs Sorry, I missed this one, I didn't get an email notifaction, I'll investigate.

The simplest solution is to skip the INSU chunks. I can try to add code that skips it, and see if that is sufficient.

Would be interesting to look at an RVM file with an INSU chunk.

[Rjvs]

No problem @cdyk the INSU (and the OBST) chunks appear to be both just PRIM chunks with an extra 32-bits which we presume to be an INT describing the degree of insulation or obstruction. Unfortunately the customer won't allow us to share our test files but we will create a PR.

[cdyk]

@Rjvs Thanks for the info, a PR will be appreciated.

If id_chunk_id is passed to parse_prim, that function can just skip the value if needed.

[xiaofan-start]

Dear cdyk, I use your code to parse a rvm file and convert it to a obj file, but the accuracy of the model mesh is slightly lower for me. Can I set the model mesh accuracy during conversion? Thank you very much!

[cdyk]

@xiaofan-start : I made a new issue https://github.com/cdyk/rvmparser/issues/23 for your question

[ddcsjtu]

Dear cdyk, Can the code parse the INSU and OBST now? As I know, the INSU and OBST chunks mean the insulation volume and obstruction volume. The sample PIPESTRESS have the two parameters. The rvm file can have INSU and OBST in Utilities/Export/Create/Representation. I can provide the rvm file with INSU and OBST, if needed. Thank you very much. Best regards

[cdyk]

Hi,

No, the code cannot parse these two chunks currently, as I have not seen any files containing these chunks. Though, with sample data, I could probably add support.

[ddcsjtu]

Dear cdyk, Thanks for your reply! The two chunks are very similar to PRIM, with one more parameter "translucency". I think I have known how to figure it out. After some tests, I will contact you. Best regards ddcsjtu

[ddcsjtu]

Dear cdyk, I have sent the rvm and my "parse_insu_obst" to your email. Best regards

[cdyk]

Great, thank you very much!

[Rjvs]

Hi @cdyk a bit late with this but we are parsing insu and obst in our fork at https://github.com/StirlingLabs/rvmparser been meaning to create a PR.

[cdyk]

Thanks, though INSU and OBST are already handled in https://github.com/cdyk/rvmparser/pull/33. I'll take a peek and compare