How to get names of 3D Nodes for PDF?

Hi!

I was trying to make some nodes of my 3D model (PRC stream) turned off by using 3D Nodes dictionary as described in PDF format specification PDF 32000-1:2008 in article 13.6.4.7 but it doesn't seem to be working.

My 3D Node dictionary looks as follows:

/Type /3DNode

/M [1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 ]

/O 1.000000

/N (test PO.3D PMI)

/V false

this entry was supposed to turn off all markups attached to object test PO when 3D view holding this dictionary is activated.

I generated .pdf file by Adobe Acrobat and it generated the following dictionary:

  /M [

    1.0

    0.0

    0.0

    0.0

    1.0

    0.0

    0.0

    0.0

    1.0

    0.0

    0.0

    0.0

  ]

  /N (test PO.3D PMI.894ae29fd62a2f37c8a93fee17295bbae0eaa9b4050100)

  /O 1.0

  /RM 36 0 R

  /Type /3DNode

  /V false

Notice the different name of the 3D object: "test PO.3D PMI.894ae29fd62a2f37c8a93fee17295bbae0eaa9b4050100" in the file generated by the Adobe and "test PO.3D PMI" that I used.

When I copied that name to my .pdf file the node was turned off as expected.

In the .prc stream that contains my 3D model the node I wanted to be turned off is called "test PO".

No .894ae29fd62a2f37c8a93fee17295bbae0eaa9b4050100 code can be found anywhere.

So the question is, how to generate/get this code?

There is no information in PDF 32000-1:2008 about the subject, there they simply suggest using the name of the node from .prc file just as I did.

Regards,

Dmitrii