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occt/src/IGESCAFControl/IGESCAFControl_Reader.cxx
atychini 6d1a049be7 0032821: DEWrapper - Implementation of a common toolkit for importing and exporting CAD files 
Implementing DE_Wrapper and its formats
2022-06-23 20:29:00 +03:00

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// Created on: 2000-08-16
// Created by: Andrey BETENEV
// Copyright (c) 2000-2014 OPEN CASCADE SAS
//
// 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 <BRep_Builder.hxx>
#include <IGESBasic_SubfigureDef.hxx>
#include <IGESCAFControl.hxx>
#include <IGESCAFControl_Reader.hxx>
#include <IGESData_IGESEntity.hxx>
#include <IGESData_IGESModel.hxx>
#include <IGESData_LevelListEntity.hxx>
#include <IGESGraph_Color.hxx>
#include <Interface_InterfaceModel.hxx>
#include <Quantity_Color.hxx>
#include <TCollection_AsciiString.hxx>
#include <TCollection_HAsciiString.hxx>
#include <TDataStd_Name.hxx>
#include <TDocStd_Document.hxx>
#include <TopoDS_Compound.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopoDS_Shape.hxx>
#include <TopTools_MapOfShape.hxx>
#include <Transfer_TransientProcess.hxx>
#include <TransferBRep.hxx>
#include <XCAFDoc_ColorTool.hxx>
#include <XCAFDoc_DocumentTool.hxx>
#include <XCAFDoc_LayerTool.hxx>
#include <XCAFDoc_ShapeTool.hxx>
#include <XSAlgo.hxx>
#include <XSAlgo_AlgoContainer.hxx>
#include <XSControl_TransferReader.hxx>
#include <XSControl_WorkSession.hxx>
#include <UnitsMethods.hxx>
//=======================================================================
//function : checkColorRange
//purpose :
//=======================================================================
static void checkColorRange (Standard_Real& theCol)
{
if ( theCol < 0. ) theCol = 0.;
if ( theCol > 100. ) theCol = 100.;
}
static inline Standard_Boolean IsComposite (const TopoDS_Shape& theShape)
{
if( theShape.ShapeType() == TopAbs_COMPOUND)
{
if(!theShape.Location().IsIdentity())
return Standard_True;
TopoDS_Iterator anIt( theShape, Standard_False, Standard_False );
for (; anIt.More() ; anIt.Next())
{
if( IsComposite (anIt.Value()))
return Standard_True;
}
}
return Standard_False;
}
//=======================================================================
//function : AddCompositeShape
//purpose : Recursively adds composite shapes (TopoDS_Compounds) into the XDE document.
// If the compound does not contain nested compounds then adds it
// as no-assembly (i.e. no individual labels for sub-shapes), as this
// combination is often encountered in IGES (e.g. Group of Trimmed Surfaces).
// If the compound does contain nested compounds then adds it as an
// assembly.
// The construction happens bottom-up, i.e. the most deep sub-shapes are added
// first.
// If theIsTop is False (in a recursive call) then sub-shapes are added without
// a location. This is to ensure that no extra label in the XDE document is
// created for an instance (as otherwise, XDE will consider it as a free
// shape). Correct location and instance will be created when adding a parent
// compound.
// theMap is used to avoid visiting the same compound.
//=======================================================================
static void AddCompositeShape (const Handle(XCAFDoc_ShapeTool)& theSTool,
const TopoDS_Shape& theShape,
Standard_Boolean theConsiderLoc,
TopTools_MapOfShape& theMap)
{
TopoDS_Shape aShape = theShape;
TopLoc_Location aLoc = theShape.Location();
if (!theConsiderLoc && !aLoc.IsIdentity())
aShape.Location( TopLoc_Location() );
if (!theMap.Add (aShape))
return;
TopoDS_Iterator anIt( theShape, Standard_False, Standard_False );
Standard_Boolean aHasCompositeSubShape = Standard_False;
TopoDS_Compound aSimpleShape;
BRep_Builder aB;
aB.MakeCompound( aSimpleShape);
TopoDS_Compound aCompShape;
aB.MakeCompound( aCompShape);
Standard_Integer nbSimple = 0;
for (; anIt.More(); anIt.Next()) {
const TopoDS_Shape& aSubShape = anIt.Value();
if (IsComposite (aSubShape)) {
aHasCompositeSubShape = Standard_True;
AddCompositeShape( theSTool, aSubShape,Standard_False ,theMap );
aB.Add( aCompShape, aSubShape);
}
else
{
aB.Add(aSimpleShape, aSubShape);
nbSimple++;
}
}
//case of hybrid shape
if( nbSimple && aHasCompositeSubShape)
{
theSTool->AddShape( aSimpleShape, Standard_False, Standard_False );
TopoDS_Compound aNewShape;
aB.MakeCompound(aNewShape);
aB.Add(aNewShape, aSimpleShape);
aB.Add(aNewShape,aCompShape);
if (!aLoc.IsIdentity())
aNewShape.Location(aLoc );
aNewShape.Orientation(theShape.Orientation());
theSTool->AddShape( aNewShape, aHasCompositeSubShape, Standard_False );
}
else
theSTool->AddShape( aShape, aHasCompositeSubShape, Standard_False );
return;
}
//=======================================================================
//function : Transfer
//purpose : basic working method
//=======================================================================
Standard_Boolean IGESCAFControl_Reader::Transfer (const Handle(TDocStd_Document) &doc,
const Message_ProgressRange& theProgress)
{
// read all shapes
Standard_Integer num;// = NbRootsForTransfer();
//if ( num <=0 ) return Standard_False;
//for ( Standard_Integer i=1; i <= num; i++ ) {
// TransferOneRoot ( i );
//}
// set units
Handle(IGESData_IGESModel) aModel = Handle(IGESData_IGESModel)::DownCast(WS()->Model());
Standard_Real aScaleFactorMM = 1.;
if (!XCAFDoc_DocumentTool::GetLengthUnit(doc, aScaleFactorMM, UnitsMethods_LengthUnit_Millimeter))
{
XSAlgo::AlgoContainer()->PrepareForTransfer(); // update unit info
aScaleFactorMM = UnitsMethods::GetCasCadeLengthUnit();
// set length unit to the document
XCAFDoc_DocumentTool::SetLengthUnit(doc, aScaleFactorMM, UnitsMethods_LengthUnit_Millimeter);
}
aModel->ChangeGlobalSection().SetCascadeUnit(aScaleFactorMM);
TransferRoots(theProgress); // replaces the above
num = NbShapes();
if ( num <=0 ) return Standard_False;
// and insert them to the document
Handle(XCAFDoc_ShapeTool) STool = XCAFDoc_DocumentTool::ShapeTool( doc->Main() );
if(STool.IsNull()) return Standard_False;
Standard_Integer i;
for(i=1; i<=num; i++) {
TopoDS_Shape sh = Shape ( i );
// ---- HERE -- to add check [ assembly / hybrid model ]
if( !IsComposite (sh))
STool->AddShape( sh, Standard_False );
else {
TopTools_MapOfShape aMap;
AddCompositeShape( STool, sh,Standard_True, aMap );
}
}
// added by skl 13.10.2003
const Handle(XSControl_TransferReader) &TR = WS()->TransferReader();
const Handle(Transfer_TransientProcess) &TP = TR->TransientProcess();
Standard_Boolean IsCTool = Standard_True;
Handle(XCAFDoc_ColorTool) CTool = XCAFDoc_DocumentTool::ColorTool(doc->Main());
if(CTool.IsNull()) IsCTool = Standard_False;
Standard_Boolean IsLTool = Standard_True;
Handle(XCAFDoc_LayerTool) LTool = XCAFDoc_DocumentTool::LayerTool(doc->Main());
if(LTool.IsNull()) IsLTool = Standard_False;
Standard_Integer nb = aModel->NbEntities();
for(i=1; i<=nb; i++) {
Handle(IGESData_IGESEntity) ent = Handle(IGESData_IGESEntity)::DownCast (aModel->Value(i) );
if ( ent.IsNull() ) continue;
Handle(Transfer_Binder) binder = TP->Find ( ent );
if ( binder.IsNull() ) continue;
TopoDS_Shape S = TransferBRep::ShapeResult (binder);
if ( S.IsNull() ) continue;
Standard_Boolean IsColor = Standard_False;
Quantity_Color col;
if( GetColorMode() && IsCTool ) {
// read colors
if(ent->DefColor()==IGESData_DefValue ||
ent->DefColor()==IGESData_DefReference) {
// color is assigned
// decode color and set to document
IsColor = Standard_True;
if ( ent->DefColor() == IGESData_DefValue ) {
col = IGESCAFControl::DecodeColor ( ent->RankColor() );
}
else {
Handle(IGESGraph_Color) color = Handle(IGESGraph_Color)::DownCast ( ent->Color() );
if ( color.IsNull() ) {
#ifdef OCCT_DEBUG
std::cout << "Error: Unrecognized type of color definition" << std::endl;
#endif
IsColor = Standard_False;
}
else {
Standard_Real r, g, b;
color->RGBIntensity ( r, g, b );
checkColorRange ( r );
checkColorRange ( g );
checkColorRange ( b );
col.SetValues ( 0.01*r, 0.01*g, 0.01*b, Quantity_TOC_sRGB );
}
}
}
}
TDF_Label L;
Standard_Boolean IsFound;
if(IsColor) {
CTool->AddColor(col);
IsFound = STool->SearchUsingMap(S,L,Standard_False,Standard_True);
}
else {
IsFound = STool->SearchUsingMap(S,L,Standard_False,Standard_False);
}
if(!IsFound) {
if(IsColor) {
for (TopoDS_Iterator it(S); it.More(); it.Next()) {
if(STool->SearchUsingMap(it.Value(),L,Standard_False,Standard_True)) {
CTool->SetColor(L,col,XCAFDoc_ColorGen);
if( GetLayerMode() && IsLTool ) {
// read layers
// set a layers to the document
IGESData_DefList aDeflist = ent->DefLevel();
switch (aDeflist) {
case IGESData_DefOne : {
TCollection_ExtendedString aLayerName ( ent->Level() );
LTool->SetLayer( L, aLayerName );
break;
}
case IGESData_DefSeveral : {
Handle(IGESData_LevelListEntity) aLevelList = ent->LevelList();
Standard_Integer layerNb = aLevelList->NbLevelNumbers();
for ( Standard_Integer ilev = 1; ilev <= layerNb; ilev++ ) {
TCollection_ExtendedString aLayerName ( aLevelList->LevelNumber(ilev) );
LTool->SetLayer( L, aLayerName );
}
break;
}
default : break;
}
}
}
}
}
}
else {
if(IsColor) {
CTool->SetColor(L,col,XCAFDoc_ColorGen);
}
if(GetNameMode()) {
// read names
if(ent->HasName()) {
TCollection_AsciiString string = ent->NameValue()->String();
string.LeftAdjust();
string.RightAdjust();
TCollection_ExtendedString str(string);
TDataStd_Name::Set(L,str);
}
}
if( GetLayerMode() && IsLTool ) {
// read layers
// set a layers to the document
IGESData_DefList aDeflist = ent->DefLevel();
switch (aDeflist) {
case IGESData_DefOne : {
TCollection_ExtendedString aLayerName ( ent->Level() );
LTool->SetLayer( L, aLayerName );
break;
}
case IGESData_DefSeveral : {
Handle(IGESData_LevelListEntity) aLevelList = ent->LevelList();
Standard_Integer layerNb = aLevelList->NbLevelNumbers();
for ( Standard_Integer ilev = 1; ilev <= layerNb; ilev++ ) {
TCollection_ExtendedString aLayerName ( aLevelList->LevelNumber(ilev) );
LTool->SetLayer( L, aLayerName );
}
break;
}
default : break;
}
}
}
//Checks that current entity is a subfigure
Handle(IGESBasic_SubfigureDef) aSubfigure = Handle(IGESBasic_SubfigureDef)::DownCast (ent);
if (GetNameMode() && !aSubfigure.IsNull() && STool->Search (S, L, Standard_True, Standard_True))
{
//In this case we attach subfigure name to the label, instead of default "COMPOUND"
Handle(TCollection_HAsciiString) aName = aSubfigure->Name();
aName->LeftAdjust();
aName->RightAdjust();
TCollection_ExtendedString anExtStrName (aName->ToCString());
TDataStd_Name::Set (L, anExtStrName);
}
}
CTool->ReverseChainsOfTreeNodes();
// Update assembly compounds
STool->UpdateAssemblies();
return Standard_True;
}
//=======================================================================
//function : Perform
//purpose :
//=======================================================================
Standard_Boolean IGESCAFControl_Reader::Perform (const Standard_CString filename,
const Handle(TDocStd_Document) &doc,
const Message_ProgressRange& theProgress)
{
if ( ReadFile ( filename ) != IFSelect_RetDone ) return Standard_False;
return Transfer ( doc, theProgress );
}
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