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111 lines
3.2 KiB
C++
111 lines
3.2 KiB
C++
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// File: STEPImport.cxx
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// Created: Wed May 19 14:41:10 2004
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// Author: Pavel TELKOV
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// <ptv@mutex.nnov.opencascade.com>
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#include "utilities.h"
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#include <BRep_Builder.hxx>
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#include <IFSelect_ReturnStatus.hxx>
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#include <STEPControl_Reader.hxx>
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#include <TCollection_AsciiString.hxx>
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#include <TopoDS_Compound.hxx>
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#include <TopoDS_Shape.hxx>
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#include <Standard_ErrorHandler.hxx> // CAREFUL ! position of this file is critic : see Lucien PIGNOLONI / OCC
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//=============================================================================
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/*!
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* Import()
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*/
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//=============================================================================
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extern "C"
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{
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#ifdef WNT
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__declspec(__dllexport)
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#endif
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TopoDS_Shape Import (const TCollection_AsciiString& theFileName,
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TCollection_AsciiString& theError)
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{
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MESSAGE("Import STEP model from file " << theFileName.ToCString());
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TopoDS_Shape aResShape;
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//VRV: OCC 4.0 migration
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STEPControl_Reader aReader;
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//VRV: OCC 4.0 migration
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TopoDS_Compound compound;
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BRep_Builder B;
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B.MakeCompound( compound );
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try {
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IFSelect_ReturnStatus status = aReader.ReadFile(theFileName.ToCString());
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if (status == IFSelect_RetDone) {
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Standard_Boolean failsonly = Standard_False ;
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aReader.PrintCheckLoad (failsonly, IFSelect_ItemsByEntity);
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/* Root transfers */
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Standard_Integer nbr = aReader.NbRootsForTransfer();
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aReader.PrintCheckTransfer (failsonly, IFSelect_ItemsByEntity);
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for ( Standard_Integer n=1; n <= nbr; n++) {
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Standard_Boolean ok = aReader.TransferRoot(n);
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/* Collecting resulting entities */
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Standard_Integer nbs = aReader.NbShapes();
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if (!ok || nbs == 0)
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{
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// THROW_SALOME_CORBA_EXCEPTION("Exception catched in GEOM_Gen_i::ImportStep", SALOME::BAD_PARAM);
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continue; // skip empty root
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}
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/* For a single entity */
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else if (nbr == 1 && nbs == 1) {
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aResShape = aReader.Shape(1);
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break;
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}
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for ( Standard_Integer i=1; i<=nbs; i++ ) {
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TopoDS_Shape aShape = aReader.Shape(i);
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if ( aShape.IsNull() ) {
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// THROW_SALOME_CORBA_EXCEPTION("Null shape in GEOM_Gen_i::ImportStep", SALOME::BAD_PARAM) ;
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//return aResShape;
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continue;
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}
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else {
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B.Add( compound, aShape ) ;
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}
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}
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}
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if ( aResShape.IsNull() )
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aResShape = compound;
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} else {
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// switch (status) {
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// case IFSelect_RetVoid:
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// theError = "Nothing created or No data to process";
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// break;
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// case IFSelect_RetError:
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// theError = "Error in command or input data";
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// break;
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// case IFSelect_RetFail:
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// theError = "Execution was run, but has failed";
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// break;
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// case IFSelect_RetStop:
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// theError = "Execution has been stopped. Quite possible, an exception was raised";
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// break;
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// default:
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// break;
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// }
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theError = "Wrong format of the imported file. Can't import file.";
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aResShape.Nullify();
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}
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}
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catch (Standard_Failure) {
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Handle(Standard_Failure) aFail = Standard_Failure::Caught();
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theError = aFail->GetMessageString();
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aResShape.Nullify();
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}
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return aResShape;
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}
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}
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