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occt/src/RWStepVisual/RWStepVisual_RWTriangulatedFace.cxx
snn cec41bb93d 0030024: Data Exchange - STEP, IGES export support of BRep shapes based on tessellated geometry 
Support of reading and writing tessellated geometry is added for the following STEP entities:
- triangulated face
- complex triangulated face
- tessellated shell
- tessellated solid
- tessellated shape representation

Models without BRep geometry (mesh formats like STL, OBJ and so on) are supported for writing to STEP.

New parameters are added to enable/disable tessellated geometry reading and writing:
- read.step.tessellated (On/Off/OnNoBRep) (On by default)
- write.step.tessellated (On/Off/OnNoBRep) (OnNoBRep by default)

OnNoBRep - tessellation is read/written only for entities for which there is no BRep representation.

Faces with poly triangulation are written in STEP as triangulated face entities with one coordinates list per face.
Only one poly triangulation per face (returned by BRep_Tool::Triangulation) is written to STEP.
2022-06-03 17:44:17 +03:00

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// Created on : Thu Mar 24 18:30:12 2022
// Created by: snn
// Generator: Express (EXPRESS -> CASCADE/XSTEP Translator) V2.0
// Copyright (c) Open CASCADE 2022
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <RWStepVisual_RWTriangulatedFace.hxx>
#include <StepVisual_TriangulatedFace.hxx>
#include <Interface_EntityIterator.hxx>
#include <StepData_StepReaderData.hxx>
#include <StepData_StepWriter.hxx>
#include <TCollection_HAsciiString.hxx>
#include <StepVisual_CoordinatesList.hxx>
#include <Standard_Integer.hxx>
#include <TColStd_HArray2OfReal.hxx>
#include <TColStd_HArray1OfReal.hxx>
#include <Standard_Real.hxx>
#include <StepVisual_FaceOrSurface.hxx>
#include <TColStd_HArray1OfInteger.hxx>
#include <TColStd_HArray2OfInteger.hxx>
//=======================================================================
//function : RWStepVisual_RWTriangulatedFace
//purpose :
//=======================================================================
RWStepVisual_RWTriangulatedFace::RWStepVisual_RWTriangulatedFace() {}
//=======================================================================
//function : ReadStep
//purpose :
//=======================================================================
void RWStepVisual_RWTriangulatedFace::ReadStep (const Handle(StepData_StepReaderData)& theData,
const Standard_Integer theNum,
Handle(Interface_Check)& theCheck,
const Handle(StepVisual_TriangulatedFace)& theEnt) const
{
// Check number of parameters
if (!theData->CheckNbParams(theNum, 7, theCheck, "triangulated_face"))
{
return;
}
// Inherited fields of RepresentationItem
Handle(TCollection_HAsciiString) aRepresentationItem_Name;
theData->ReadString(theNum, 1, "representation_item.name", theCheck, aRepresentationItem_Name);
// Inherited fields of TessellatedFace
Handle(StepVisual_CoordinatesList) aTessellatedFace_Coordinates;
theData->ReadEntity(theNum, 2, "tessellated_face.coordinates", theCheck,
STANDARD_TYPE(StepVisual_CoordinatesList), aTessellatedFace_Coordinates);
Standard_Integer aTessellatedFace_Pnmax;
theData->ReadInteger(theNum, 3, "tessellated_face.pnmax", theCheck, aTessellatedFace_Pnmax);
Handle(TColStd_HArray2OfReal) aTessellatedFace_Normals;
Standard_Integer sub4 = 0;
if (theData->ReadSubList(theNum, 4, "tessellated_face.normals", theCheck, sub4))
{
Standard_Integer nb0 = theData->NbParams(sub4);
Standard_Integer nbj0 = theData->NbParams(theData->ParamNumber(sub4,1));
aTessellatedFace_Normals = new TColStd_HArray2OfReal(1, nb0, 1, nbj0);
for (Standard_Integer i0 = 1; i0 <= nb0; i0++)
{
Standard_Integer subj4 = 0;
if ( theData->ReadSubList (sub4, i0, "sub-part(tessellated_face.normals)", theCheck, subj4) ) {
Standard_Integer num4 = subj4;
for (Standard_Integer j0 = 1; j0 <= nbj0; j0++)
{
Standard_Real anIt0;
theData->ReadReal(num4, j0, "real", theCheck, anIt0);
aTessellatedFace_Normals->SetValue(i0,j0, anIt0);
}
}
}
}
StepVisual_FaceOrSurface aTessellatedFace_GeometricLink;
Standard_Boolean hasTessellatedFace_GeometricLink = Standard_True;
if (theData->IsParamDefined(theNum, 5))
{
theData->ReadEntity(theNum, 5, "tessellated_face.geometric_link", theCheck, aTessellatedFace_GeometricLink);
}
else
{
hasTessellatedFace_GeometricLink = Standard_False;
aTessellatedFace_GeometricLink = StepVisual_FaceOrSurface();
}
// Own fields of TriangulatedFace
Handle(TColStd_HArray1OfInteger) aPnindex;
Standard_Integer sub6 = 0;
if (theData->ReadSubList(theNum, 6, "pnindex", theCheck, sub6))
{
Standard_Integer nb0 = theData->NbParams(sub6);
aPnindex = new TColStd_HArray1OfInteger(1, nb0);
Standard_Integer num2 = sub6;
for (Standard_Integer i0 = 1; i0 <= nb0; i0++)
{
Standard_Integer anIt0;
theData->ReadInteger(num2, i0, "integer", theCheck, anIt0);
aPnindex->SetValue(i0, anIt0);
}
}
Handle(TColStd_HArray2OfInteger) aTriangles;
Standard_Integer sub7 = 0;
if (theData->ReadSubList(theNum, 7, "triangles", theCheck, sub7))
{
Standard_Integer nb0 = theData->NbParams(sub7);
Standard_Integer nbj0 = theData->NbParams(theData->ParamNumber(sub7,1));
aTriangles = new TColStd_HArray2OfInteger(1, nb0, 1, nbj0);
for (Standard_Integer i0 = 1; i0 <= nb0; i0++)
{
Standard_Integer subj7 = 0;
if ( theData->ReadSubList (sub7, i0, "sub-part(triangles)", theCheck, subj7) ) {
Standard_Integer num4 = subj7;
for (Standard_Integer j0 = 1; j0 <= nbj0; j0++)
{
Standard_Integer anIt0;
theData->ReadInteger(num4, j0, "integer", theCheck, anIt0);
aTriangles->SetValue(i0,j0, anIt0);
}
}
}
}
// Initialize entity
theEnt->Init(aRepresentationItem_Name, aTessellatedFace_Coordinates, aTessellatedFace_Pnmax, aTessellatedFace_Normals, hasTessellatedFace_GeometricLink, aTessellatedFace_GeometricLink, aPnindex, aTriangles);
#ifdef OCCT_DEBUG
std::cout << aTessellatedFace_Pnmax << " " << (aTriangles.IsNull() ? 0 : aTriangles->NbRows()) << std::endl;
#endif
}
//=======================================================================
//function : WriteStep
//purpose :
//=======================================================================
void RWStepVisual_RWTriangulatedFace::WriteStep (StepData_StepWriter& theSW,
const Handle(StepVisual_TriangulatedFace)& theEnt) const
{
// Own fields of RepresentationItem
theSW.Send(theEnt->Name());
// Own fields of TessellatedFace
theSW.Send(theEnt->Coordinates());
theSW.Send(theEnt->Pnmax());
theSW.OpenSub();
for (Standard_Integer i3 = 1; i3 <= theEnt->Normals()->NbRows(); i3++)
{
theSW.NewLine(Standard_False);
theSW.OpenSub();
for (Standard_Integer j3 = 1; j3 <= theEnt->Normals()->NbColumns(); j3++)
{
Standard_Real Var0 = theEnt->Normals()->Value(i3,j3);
theSW.Send(Var0);
}
theSW.CloseSub();
}
theSW.CloseSub();
if (theEnt->HasGeometricLink())
{
theSW.Send(theEnt->GeometricLink().Value());
}
else
{
theSW.SendUndef();
}
// Own fields of TriangulatedFace
theSW.OpenSub();
for (Standard_Integer i5 = 1; i5 <= theEnt->Pnindex()->Length(); i5++)
{
Standard_Integer Var0 = theEnt->Pnindex()->Value(i5);
theSW.Send(Var0);
}
theSW.CloseSub();
theSW.OpenSub();
for (Standard_Integer i6 = 1; i6 <= theEnt->Triangles()->NbRows(); i6++)
{
theSW.NewLine(Standard_False);
theSW.OpenSub();
for (Standard_Integer j6 = 1; j6 <= theEnt->Triangles()->NbColumns(); j6++)
{
Standard_Integer Var0 = theEnt->Triangles()->Value(i6,j6);
theSW.Send(Var0);
}
theSW.CloseSub();
}
theSW.CloseSub();
}
//=======================================================================
//function : Share
//purpose :
//=======================================================================
void RWStepVisual_RWTriangulatedFace::Share (const Handle(StepVisual_TriangulatedFace)&theEnt,
Interface_EntityIterator& theIter) const
{
// Inherited fields of RepresentationItem
// Inherited fields of TessellatedFace
theIter.AddItem(theEnt->StepVisual_TessellatedFace::Coordinates());
if (theEnt->StepVisual_TessellatedFace::HasGeometricLink())
{
theIter.AddItem(theEnt->StepVisual_TessellatedFace::GeometricLink().Value());
}
// Own fields of TriangulatedFace
}
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