Convert STEP 242 to STEP 214 - Forum Open Cascade Technology

Jorge Fernandes
Wed, 06/21/2023 - 17:20

Forums:

I have a CAD file. I exported it in STEP 214 and STP 242.

When open with this both files with:

from OCC.Core.STEPControl import STEPControl_Reader
from OCC.Core.StlAPI import StlAPI_Writer

input_file  = r"step.STP"

step_reader = STEPControl_Reader()
step_reader.ReadFile( input_file )
step_reader.TransferRoot()
myshape = step_reader.Shape()

The step file 214 opens with no problem and the 242 gives the message

*** ERR StepReaderData : Unresolved Reference : Fails Count : 416 ***

So my idea is to convert 242 into 214. Is this possible?

Thanks in advance.

Dmitrii Pasukhin
Wed, 06/21/2023 - 18:15

Using OCCT it is possible. You need change schema version for writing. I don't know how to do this on pythonOCC.

Best regards, Dmitrii.

Jorge Fernandes
Wed, 06/21/2023 - 19:24

Can you give an example in c++?

Thanks.

Dmitrii Pasukhin
Thu, 06/22/2023 - 11:32

  /*
  enum WriteMode_StepSchema
  {
    WriteMode_StepSchema_AP214CD = 1,
    WriteMode_StepSchema_AP214DIS,
    WriteMode_StepSchema_AP203,
    WriteMode_StepSchema_AP214IS,
    WriteMode_StepSchema_AP242DIS
  };*/
  STEPCAFControl_Controller::Init();
  Interface_Static::SetIVal("write.step.schema", 1);
  //... StepCafControl_Reader...
  // ...
  //... StepCafControl_Writer...
  // ...

Best regards, Dmitrii.