-// Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <Basics_OCCTVersion.hxx>
-#include <utilities.h>
#include <OpUtil.hxx>
#include <Utils_ExceptHandlers.hxx>
#include <BRepClass3d_SolidClassifier.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
+#include <BRepBuilderAPI_Sewing.hxx>
+
+#include <BRepCheck_Analyzer.hxx>
#include <Bnd_Box.hxx>
+#include <BOPTools_AlgoTools.hxx>
+
#include <TopAbs.hxx>
#include <TopExp.hxx>
#include <TopoDS.hxx>
#include <ShapeAnalysis.hxx>
#include <ShapeFix_Shape.hxx>
+#include <ShapeFix_ShapeTolerance.hxx>
#include <ProjLib.hxx>
#include <ElSLib.hxx>
#include <vector>
+#include <sstream>
+#include <algorithm>
#include <Standard_Failure.hxx>
#include <Standard_NullObject.hxx>
#include <Standard_ErrorHandler.hxx> // CAREFUL ! position of this file is critic : see Lucien PIGNOLONI / OCC
+#define MAX2(X, Y) (Abs(X) > Abs(Y) ? Abs(X) : Abs(Y))
+#define MAX3(X, Y, Z) (MAX2(MAX2(X,Y), Z))
+
#define STD_SORT_ALGO 1
+#define DEFAULT_TOLERANCE_TOLERANCE 1.e-02
+#define DEFAULT_MAX_TOLERANCE_TOLERANCE 1.e-06
+
+// When the following macro is defined, ShapeFix_ShapeTolerance function is used to set max tolerance of curve
+// in GEOMUtils::FixShapeCurves function; otherwise less restrictive BRep_Builder::UpdateEdge/UpdateVertex
+// approach is used
+// VSR (29/12/2014): macro disabled
+//#define USE_LIMIT_TOLERANCE
+
+namespace
+{
+ /**
+ * This function constructs and returns modified shape from the original one
+ * for singular cases. It is used for the method GetMinDistanceSingular.
+ *
+ * \param theShape the original shape
+ * \param theModifiedShape output parameter. The modified shape.
+ * \param theAddDist output parameter. The added distance for modified shape.
+ * \retval true if the shape is modified; false otherwise.
+ *
+ * \internal
+ */
+ Standard_Boolean ModifyShape(const TopoDS_Shape &theShape,
+ TopoDS_Shape &theModifiedShape,
+ Standard_Real &theAddDist)
+ {
+ TopExp_Explorer anExp;
+ int nbf = 0;
+
+ theAddDist = 0.;
+ theModifiedShape.Nullify();
+
+ for ( anExp.Init( theShape, TopAbs_FACE ); anExp.More(); anExp.Next() ) {
+ nbf++;
+ theModifiedShape = anExp.Current();
+ }
+ if(nbf==1) {
+ TopoDS_Shape sh = theShape;
+ while(sh.ShapeType()==TopAbs_COMPOUND) {
+ TopoDS_Iterator it(sh);
+ sh = it.Value();
+ }
+ Handle(Geom_Surface) S = BRep_Tool::Surface(TopoDS::Face(theModifiedShape));
+ if( S->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) ||
+ S->IsKind(STANDARD_TYPE(Geom_ToroidalSurface)) ||
+ S->IsUPeriodic()) {
+ const Standard_Boolean isShell =
+ (sh.ShapeType()==TopAbs_SHELL || sh.ShapeType()==TopAbs_FACE);
+
+ if ( !isShell && S->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) ) {
+ Handle(Geom_SphericalSurface) SS = Handle(Geom_SphericalSurface)::DownCast(S);
+ gp_Pnt PC = SS->Location();
+ BRep_Builder B;
+ TopoDS_Vertex V;
+ B.MakeVertex(V,PC,1.e-7);
+ theModifiedShape = V;
+ theAddDist = SS->Radius();
+ return Standard_True;
+ }
+ if ( !isShell && S->IsKind(STANDARD_TYPE(Geom_ToroidalSurface)) ) {
+ Handle(Geom_ToroidalSurface) TS = Handle(Geom_ToroidalSurface)::DownCast(S);
+ gp_Ax3 ax3 = TS->Position();
+ Handle(Geom_Circle) C = new Geom_Circle(ax3.Ax2(),TS->MajorRadius());
+ BRep_Builder B;
+ TopoDS_Edge E;
+ B.MakeEdge(E,C,1.e-7);
+ theModifiedShape = E;
+ theAddDist = TS->MinorRadius();
+ return Standard_True;
+ }
+
+ // non solid case or any periodic surface (Mantis 22454).
+ double U1,U2,V1,V2;
+ // changes for 0020677: EDF 1219 GEOM: MinDistance gives 0 instead of 20.88
+ //S->Bounds(U1,U2,V1,V2); changed by
+ ShapeAnalysis::GetFaceUVBounds(TopoDS::Face(theModifiedShape),U1,U2,V1,V2);
+ // end of changes for 020677 (dmv)
+ Handle(Geom_RectangularTrimmedSurface) TrS1 =
+ new Geom_RectangularTrimmedSurface(S,U1,(U1+U2)/2.,V1,V2);
+ Handle(Geom_RectangularTrimmedSurface) TrS2 =
+ new Geom_RectangularTrimmedSurface(S,(U1+U2)/2.,U2,V1,V2);
+ TopoDS_Shape aMShape;
+
+ TopoDS_Face F1 = BRepBuilderAPI_MakeFace(TrS1, Precision::Confusion());
+ TopoDS_Face F2 = BRepBuilderAPI_MakeFace(TrS2, Precision::Confusion());
+
+ if (isShell) {
+ BRep_Builder B;
+ B.MakeCompound(TopoDS::Compound(aMShape));
+ B.Add(aMShape, F1);
+ B.Add(aMShape, F2);
+ } else {
+ // The original shape is a solid.
+ BRepBuilderAPI_Sewing aSewing (Precision::Confusion()*10.0);
+ aSewing.Add(F1);
+ aSewing.Add(F2);
+ aSewing.Perform();
+ aMShape = aSewing.SewedShape();
+ BRep_Builder B;
+ TopoDS_Solid aSolid;
+ B.MakeSolid(aSolid);
+ B.Add(aSolid, aMShape);
+ aMShape = aSolid;
+ }
+
+ Handle(ShapeFix_Shape) sfs = new ShapeFix_Shape;
+ sfs->Init(aMShape);
+ sfs->SetPrecision(1.e-6);
+ sfs->SetMaxTolerance(1.0);
+ sfs->Perform();
+ theModifiedShape = sfs->Shape();
+ return Standard_True;
+ }
+ }
+
+ theModifiedShape = theShape;
+ return Standard_False;
+ }
+
+ void parseWard( const GEOMUtils::LevelsList &theLevelList, std::string &treeStr )
+ {
+ treeStr.append( "{" );
+ for( GEOMUtils::LevelsList::const_iterator j = theLevelList.begin();
+ j != theLevelList.end(); ++j ) {
+ if ( j != theLevelList.begin() ) {
+ treeStr.append( ";" );
+ }
+ GEOMUtils::LevelInfo level = (*j);
+ GEOMUtils::LevelInfo::iterator upIter;
+ for ( upIter = level.begin(); upIter != level.end(); ++upIter ) {
+ if ( upIter != level.begin() ) {
+ treeStr.append( "," );
+ }
+ treeStr.append( upIter->first );
+ for ( std::vector<std::string>::iterator k = upIter->second.begin(); k != upIter->second.end(); ++k ) {
+ treeStr.append( "_" );
+ treeStr.append( *k );
+ }
+ }
+ }
+ treeStr.append( "}" );
+ }
+
+ GEOMUtils::LevelsList parseWard( const std::string& theData, std::size_t& theCursor )
+ {
+ std::size_t indexStart = theData.find( "{", theCursor ) + 1;
+ std::size_t indexEnd = theData.find( "}", indexStart );
+
+ std::string ward = theData.substr( indexStart, indexEnd - indexStart );
+ std::stringstream ss(ward);
+ std::string substr;
+ std::vector<std::string> levelsListStr;
+ while ( std::getline( ss, substr, ';' ) ) {
+ if ( !substr.empty() )
+ levelsListStr.push_back( substr );
+ }
+ GEOMUtils::LevelsList levelsListData;
+ for( int level = 0; level < levelsListStr.size(); level++ ) {
+ std::vector<std::string> namesListStr;
+ std::stringstream ss1( levelsListStr[level] );
+ while ( std::getline( ss1, substr, ',' ) ) {
+ if ( !substr.empty() )
+ namesListStr.push_back( substr );
+ }
+ GEOMUtils::LevelInfo levelInfoData;
+ for( int node = 0; node < namesListStr.size(); node++ ) {
+ std::vector<std::string> linksListStr;
+ std::stringstream ss2( namesListStr[node] );
+ while ( std::getline( ss2, substr, '_' ) ) {
+ if ( !substr.empty() )
+ linksListStr.push_back( substr );
+ }
+ std::string nodeItem = linksListStr[0];
+ if( !nodeItem.empty() ) {
+ GEOMUtils::NodeLinks linksListData;
+ for( int link = 1; link < linksListStr.size(); link++ ) {
+ std::string linkItem = linksListStr[link];
+ linksListData.push_back( linkItem );
+ }// Links
+ levelInfoData[nodeItem] = linksListData;
+ }
+ }// Level's objects
+ levelsListData.push_back(levelInfoData);
+ }// Levels
+
+ theCursor = indexEnd + 1;
+ return levelsListData;
+ }
+
+}
+
+//=======================================================================
+//function : ShapeToDouble
+//purpose : used by CompareShapes::operator()
+//=======================================================================
+std::pair<double, double> GEOMUtils::ShapeToDouble (const TopoDS_Shape& S, bool isOldSorting)
+{
+ // Computing of CentreOfMass
+ gp_Pnt GPoint;
+ double Len;
+
+ if (S.ShapeType() == TopAbs_VERTEX) {
+ GPoint = BRep_Tool::Pnt(TopoDS::Vertex(S));
+ Len = (double)S.Orientation();
+ }
+ else {
+ GProp_GProps GPr;
+ // BEGIN: fix for Mantis issue 0020842
+ if (isOldSorting) {
+ BRepGProp::LinearProperties(S, GPr);
+ }
+ else {
+ if (S.ShapeType() == TopAbs_EDGE || S.ShapeType() == TopAbs_WIRE) {
+ BRepGProp::LinearProperties(S, GPr);
+ }
+ else if (S.ShapeType() == TopAbs_FACE || S.ShapeType() == TopAbs_SHELL) {
+ BRepGProp::SurfaceProperties(S, GPr);
+ }
+ else {
+ BRepGProp::VolumeProperties(S, GPr);
+ }
+ }
+ // END: fix for Mantis issue 0020842
+ GPoint = GPr.CentreOfMass();
+ Len = GPr.Mass();
+ }
+
+ double dMidXYZ = GPoint.X() * 999.0 + GPoint.Y() * 99.0 + GPoint.Z() * 0.9;
+ return std::make_pair(dMidXYZ, Len);
+}
+
//=======================================================================
//function : GetPosition
//purpose :
return aV;
}
-//=======================================================================
-//function : ShapeToDouble
-//purpose : used by CompareShapes::operator()
-//=======================================================================
-std::pair<double, double> ShapeToDouble (const TopoDS_Shape& S, bool isOldSorting)
-{
- // Computing of CentreOfMass
- gp_Pnt GPoint;
- double Len;
-
- if (S.ShapeType() == TopAbs_VERTEX) {
- GPoint = BRep_Tool::Pnt(TopoDS::Vertex(S));
- Len = (double)S.Orientation();
- }
- else {
- GProp_GProps GPr;
- // BEGIN: fix for Mantis issue 0020842
- if (isOldSorting) {
- BRepGProp::LinearProperties(S, GPr);
- }
- else {
- if (S.ShapeType() == TopAbs_EDGE || S.ShapeType() == TopAbs_WIRE) {
- BRepGProp::LinearProperties(S, GPr);
- }
- else if (S.ShapeType() == TopAbs_FACE || S.ShapeType() == TopAbs_SHELL) {
- BRepGProp::SurfaceProperties(S, GPr);
- }
- else {
- BRepGProp::VolumeProperties(S, GPr);
- }
- }
- // END: fix for Mantis issue 0020842
- GPoint = GPr.CentreOfMass();
- Len = GPr.Mass();
- }
-
- double dMidXYZ = GPoint.X() * 999.0 + GPoint.Y() * 99.0 + GPoint.Z() * 0.9;
- return std::make_pair(dMidXYZ, Len);
-}
-
//=======================================================================
//function : CompareShapes::operator()
//purpose : used by std::sort(), called from SortShapes()
Standard_Boolean GEOMUtils::PreciseBoundingBox
(const TopoDS_Shape &theShape, Bnd_Box &theBox)
{
- Standard_Real aBound[6];
+ if ( theBox.IsVoid() ) BRepBndLib::Add( theShape, theBox );
+ if ( theBox.IsVoid() ) return Standard_False;
+ Standard_Real aBound[6];
theBox.Get(aBound[0], aBound[2], aBound[4], aBound[1], aBound[3], aBound[5]);
Standard_Integer i;
const Standard_Integer iHalf = i/2;
const gp_Pln aPln(aPnt[i], aDir[iHalf]);
BRepBuilderAPI_MakeFace aMkFace(aPln, -aPlnSize[iHalf], aPlnSize[iHalf],
- -aPlnSize[iHalf], aPlnSize[iHalf]);
+ -aPlnSize[iHalf], aPlnSize[iHalf]);
if (!aMkFace.IsDone()) {
return Standard_False;
TopoDS_Shape tmpSh2;
Standard_Real AddDist1 = 0.;
Standard_Real AddDist2 = 0.;
- Standard_Boolean IsChange1 = GEOMUtils::ModifyShape(aSh1, tmpSh1, AddDist1);
- Standard_Boolean IsChange2 = GEOMUtils::ModifyShape(aSh2, tmpSh2, AddDist2);
+ Standard_Boolean IsChange1 = ModifyShape(aSh1, tmpSh1, AddDist1);
+ Standard_Boolean IsChange2 = ModifyShape(aSh2, tmpSh2, AddDist2);
if( !IsChange1 && !IsChange2 )
return -2.0;
}
//=======================================================================
-// function : ModifyShape
-// purpose :
+// function : ConvertTreeToString()
+// purpose : Returns the string representation of dependency tree
//=======================================================================
-Standard_Boolean GEOMUtils::ModifyShape(const TopoDS_Shape &theShape,
- TopoDS_Shape &theModifiedShape,
- Standard_Real &theAddDist)
+void GEOMUtils::ConvertTreeToString( const TreeModel& tree,
+ std::string& dependencyStr )
{
- Standard_Boolean isModified = Standard_False;
- TopExp_Explorer anExp;
- int nbf = 0;
-
- theAddDist = 0.;
- theModifiedShape.Nullify();
-
- for ( anExp.Init( theShape, TopAbs_FACE ); anExp.More(); anExp.Next() ) {
- nbf++;
- theModifiedShape = anExp.Current();
- }
- if(nbf==1) {
- TopoDS_Shape sh = theShape;
- while(sh.ShapeType()==TopAbs_COMPOUND) {
- TopoDS_Iterator it(sh);
- sh = it.Value();
- }
- Handle(Geom_Surface) S = BRep_Tool::Surface(TopoDS::Face(theModifiedShape));
- if( S->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) ||
- S->IsKind(STANDARD_TYPE(Geom_ToroidalSurface)) ||
- S->IsUPeriodic()) {
- const Standard_Boolean isShell =
- (sh.ShapeType()==TopAbs_SHELL || sh.ShapeType()==TopAbs_FACE);
-
- if( isShell || S->IsUPeriodic() ) {
- // non solid case or any periodic surface (Mantis 22454).
- double U1,U2,V1,V2;
- // changes for 0020677: EDF 1219 GEOM: MinDistance gives 0 instead of 20.88
- //S->Bounds(U1,U2,V1,V2); changed by
- ShapeAnalysis::GetFaceUVBounds(TopoDS::Face(theModifiedShape),U1,U2,V1,V2);
- // end of changes for 020677 (dmv)
- Handle(Geom_RectangularTrimmedSurface) TrS1 =
- new Geom_RectangularTrimmedSurface(S,U1,(U1+U2)/2.,V1,V2);
- Handle(Geom_RectangularTrimmedSurface) TrS2 =
- new Geom_RectangularTrimmedSurface(S,(U1+U2)/2.,U2,V1,V2);
- BRep_Builder B;
- TopoDS_Face F1,F2;
- TopoDS_Shape aMShape;
+ TreeModel::const_iterator i;
+ for ( i = tree.begin(); i != tree.end(); ++i ) {
+ dependencyStr.append( i->first );
+ dependencyStr.append( "-" );
+ std::vector<LevelInfo> upLevelList = i->second.first;
+ dependencyStr.append( "upward" );
+ parseWard( upLevelList, dependencyStr );
+ std::vector<LevelInfo> downLevelList = i->second.second;
+ dependencyStr.append( "downward" );
+ parseWard( downLevelList, dependencyStr );
+ }
+}
- if (isShell) {
- B.MakeCompound(TopoDS::Compound(aMShape));
- } else {
- B.MakeShell(TopoDS::Shell(aMShape));
- }
+//=======================================================================
+// function : ConvertStringToTree()
+// purpose : Returns the dependency tree
+//=======================================================================
+void GEOMUtils::ConvertStringToTree( const std::string& dependencyStr,
+ TreeModel& tree )
+{
+ std::size_t cursor = 0;
- B.MakeFace(F1,TrS1,1.e-7);
- B.Add(aMShape,F1);
- B.MakeFace(F2,TrS2,1.e-7);
- B.Add(aMShape,F2);
- Handle(ShapeFix_Shape) sfs = new ShapeFix_Shape;
+ while( dependencyStr.find('-',cursor) != std::string::npos ) //find next selected object
+ {
+ std::size_t objectIndex = dependencyStr.find( '-', cursor );
+ std::string objectEntry = dependencyStr.substr( cursor, objectIndex - cursor );
+ cursor = objectIndex;
- if (!isShell) {
- // The original shape is a solid.
- TopoDS_Solid aSolid;
+ std::size_t upwardIndexBegin = dependencyStr.find("{",cursor) + 1;
+ std::size_t upwardIndexFinish = dependencyStr.find("}",upwardIndexBegin);
+ LevelsList upwardList = parseWard( dependencyStr, cursor );
- B.MakeSolid(aSolid);
- B.Add(aSolid, aMShape);
- aMShape = aSolid;
- }
+ LevelsList downwardList = parseWard( dependencyStr, cursor );
- sfs->Init(aMShape);
- sfs->SetPrecision(1.e-6);
- sfs->SetMaxTolerance(1.0);
- sfs->Perform();
- theModifiedShape = sfs->Shape();
- isModified = Standard_True;
+ tree[objectEntry] = std::pair<LevelsList,LevelsList>( upwardList, downwardList );
+ }
+}
+
+bool GEOMUtils::CheckShape( TopoDS_Shape& shape,
+ bool checkGeometry )
+{
+ BRepCheck_Analyzer analyzer( shape, checkGeometry );
+ return analyzer.IsValid();
+}
+
+bool GEOMUtils::FixShapeTolerance( TopoDS_Shape& shape,
+ TopAbs_ShapeEnum type,
+ Standard_Real tolerance,
+ bool checkGeometry )
+{
+ ShapeFix_ShapeTolerance aSft;
+ aSft.LimitTolerance( shape, tolerance, tolerance, type );
+ Handle(ShapeFix_Shape) aSfs = new ShapeFix_Shape( shape );
+ aSfs->Perform();
+ shape = aSfs->Shape();
+ return CheckShape( shape, checkGeometry );
+}
+
+bool GEOMUtils::FixShapeTolerance( TopoDS_Shape& shape,
+ Standard_Real tolerance,
+ bool checkGeometry )
+{
+ return FixShapeTolerance( shape, TopAbs_SHAPE, tolerance, checkGeometry );
+}
+
+bool GEOMUtils::FixShapeTolerance( TopoDS_Shape& shape,
+ bool checkGeometry )
+{
+ return FixShapeTolerance( shape, Precision::Confusion(), checkGeometry );
+}
+
+bool GEOMUtils::FixShapeCurves( TopoDS_Shape& shape )
+{
+ Standard_Real aT, aTolE, aD, aDMax;
+ TopExp_Explorer aExpF, aExpE;
+ NCollection_DataMap<TopoDS_Edge, Standard_Real, TopTools_ShapeMapHasher> aDMETol;
+ aExpF.Init(shape, TopAbs_FACE);
+ for (; aExpF.More(); aExpF.Next()) {
+ const TopoDS_Face& aF = *(TopoDS_Face*)&aExpF.Current();
+ aExpE.Init(aF, TopAbs_EDGE);
+ for (; aExpE.More(); aExpE.Next()) {
+ const TopoDS_Edge& aE = *(TopoDS_Edge*)&aExpE.Current();
+ try {
+ if (!BOPTools_AlgoTools::ComputeTolerance(aF, aE, aDMax, aT)) {
+ continue;
+ }
+ }
+ catch(...) {
+ continue;
+ }
+ aTolE = BRep_Tool::Tolerance(aE);
+ if (aDMax < aTolE) continue;
+ if (aDMETol.IsBound(aE)) {
+ aD = aDMETol.Find(aE);
+ if (aDMax > aD) {
+ aDMETol.UnBind(aE);
+ aDMETol.Bind(aE, aDMax);
+ }
}
else {
- if( S->IsKind(STANDARD_TYPE(Geom_SphericalSurface)) ) {
- Handle(Geom_SphericalSurface) SS = Handle(Geom_SphericalSurface)::DownCast(S);
- gp_Pnt PC = SS->Location();
- BRep_Builder B;
- TopoDS_Vertex V;
- B.MakeVertex(V,PC,1.e-7);
- theModifiedShape = V;
- theAddDist = SS->Radius();
- isModified = Standard_True;
+ aDMETol.Bind(aE, aDMax);
+ }
+ }
+ }
+ NCollection_DataMap<TopoDS_Edge, Standard_Real, TopTools_ShapeMapHasher>::Iterator aDMETolIt(aDMETol);
+#ifdef USE_LIMIT_TOLERANCE
+ ShapeFix_ShapeTolerance sat;
+#else
+ BRep_Builder b;
+#endif
+ for (; aDMETolIt.More(); aDMETolIt.Next()) {
+#ifdef USE_LIMIT_TOLERANCE
+ sat.LimitTolerance(aDMETolIt.Key(), aDMETolIt.Value()*1.001);
+#else
+ TopoDS_Iterator itv(aDMETolIt.Key());
+ for (; itv.More(); itv.Next())
+ b.UpdateVertex(TopoDS::Vertex(itv.Value()), aDMETolIt.Value()*1.001);
+ b.UpdateEdge(aDMETolIt.Key(), aDMETolIt.Value()*1.001);
+#endif
+ }
+ return CheckShape( shape );
+}
+
+bool GEOMUtils::Write( const TopoDS_Shape& shape, const char* fileName )
+{
+ return BRepTools::Write( shape, fileName );
+}
+
+TopoDS_Shape GEOMUtils::ReduceCompound( const TopoDS_Shape& shape )
+{
+ TopoDS_Shape result = shape;
+
+ if ( shape.ShapeType() == TopAbs_COMPOUND ||
+ shape.ShapeType() == TopAbs_COMPSOLID ) {
+
+ TopTools_ListOfShape l;
+
+ TopoDS_Iterator it ( shape );
+ for ( ; it.More(); it.Next() )
+ l.Append( it.Value() );
+ if ( l.Extent() == 1 && l.First() != shape )
+ result = ReduceCompound( l.First() );
+ }
+
+ return result;
+}
+
+void GEOMUtils::MeshShape( const TopoDS_Shape shape,
+ double deflection, bool theForced )
+{
+ Standard_Real aDeflection = ( deflection <= 0 ) ? DefaultDeflection() : deflection;
+
+ // Is shape triangulated?
+ Standard_Boolean alreadyMeshed = true;
+ TopExp_Explorer ex;
+ TopLoc_Location aLoc;
+ for ( ex.Init( shape, TopAbs_FACE ); ex.More() && alreadyMeshed; ex.Next() ) {
+ const TopoDS_Face& aFace = TopoDS::Face( ex.Current() );
+ Handle(Poly_Triangulation) aPoly = BRep_Tool::Triangulation( aFace, aLoc );
+ alreadyMeshed = !aPoly.IsNull();
+ }
+
+ if ( !alreadyMeshed || theForced ) {
+ // Compute bounding box
+ Bnd_Box B;
+ BRepBndLib::Add( shape, B );
+ if ( B.IsVoid() )
+ return; // NPAL15983 (Bug when displaying empty groups)
+ Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax;
+ B.Get( aXmin, aYmin, aZmin, aXmax, aYmax, aZmax );
+
+ // This magic line comes from Prs3d_ShadedShape.gxx in OCCT
+ aDeflection = MAX3(aXmax-aXmin, aYmax-aYmin, aZmax-aZmin) * aDeflection * 4;
+
+ // Clean triangulation before compute incremental mesh
+ BRepTools::Clean( shape );
+
+ // Compute triangulation
+ BRepMesh_IncrementalMesh mesh( shape, aDeflection );
+ }
+}
+
+double GEOMUtils::DefaultDeflection()
+{
+ return 0.001;
+}
+
+//=======================================================================
+//function : IsOpenPath
+//purpose :
+//=======================================================================
+bool GEOMUtils::IsOpenPath(const TopoDS_Shape &theShape)
+{
+ bool isOpen = true;
+
+ if (theShape.IsNull() == Standard_False) {
+ if (theShape.Closed()) {
+ // The shape is closed
+ isOpen = false;
+ } else {
+ const TopAbs_ShapeEnum aType = theShape.ShapeType();
+
+ if (aType == TopAbs_EDGE || aType == TopAbs_WIRE) {
+ // Check if path ends are coinsident.
+ TopoDS_Vertex aV[2];
+
+ if (aType == TopAbs_EDGE) {
+ // Edge
+ TopExp::Vertices(TopoDS::Edge(theShape), aV[0], aV[1]);
+ } else {
+ // Wire
+ TopExp::Vertices(TopoDS::Wire(theShape), aV[0], aV[1]);
}
- else {
- Handle(Geom_ToroidalSurface) TS = Handle(Geom_ToroidalSurface)::DownCast(S);
- gp_Ax3 ax3 = TS->Position();
- Handle(Geom_Circle) C = new Geom_Circle(ax3.Ax2(),TS->MajorRadius());
- BRep_Builder B;
- TopoDS_Edge E;
- B.MakeEdge(E,C,1.e-7);
- theModifiedShape = E;
- theAddDist = TS->MinorRadius();
- isModified = Standard_True;
+
+ if (aV[0].IsNull() == Standard_False &&
+ aV[1].IsNull() == Standard_False) {
+ if (aV[0].IsSame(aV[1])) {
+ // The shape is closed
+ isOpen = false;
+ } else {
+ const Standard_Real aTol1 = BRep_Tool::Tolerance(aV[0]);
+ const Standard_Real aTol2 = BRep_Tool::Tolerance(aV[1]);
+ const gp_Pnt aPnt1 = BRep_Tool::Pnt(aV[0]);
+ const gp_Pnt aPnt2 = BRep_Tool::Pnt(aV[1]);
+
+ if (aPnt1.Distance(aPnt2) <= aTol1 + aTol2) {
+ // The shape is closed
+ isOpen = false;
+ }
+ }
}
}
- } else {
- theModifiedShape = theShape;
}
}
- else
- theModifiedShape = theShape;
- return isModified;
+ return isOpen;
+}
+
+//=======================================================================
+//function : CompareToleranceValues
+//purpose :
+//=======================================================================
+int GEOMUtils::CompareToleranceValues(const double theTolShape,
+ const double theTolRef)
+{
+ const double aTolTol = Min(DEFAULT_MAX_TOLERANCE_TOLERANCE,
+ theTolRef*DEFAULT_TOLERANCE_TOLERANCE);
+
+ int aResult = 0;
+
+ if (theTolShape < theTolRef - aTolTol) {
+ aResult = -1;
+ } else if (theTolShape > theTolRef + aTolTol) {
+ aResult = 1;
+ }
+
+ return aResult;
+}
+
+//=======================================================================
+//function : IsFitCondition
+//purpose :
+//=======================================================================
+bool GEOMUtils::IsFitCondition(const ComparisonCondition theCondition,
+ const double theTolShape,
+ const double theTolRef)
+{
+ const int aCompValue = CompareToleranceValues(theTolShape, theTolRef);
+ bool isFit = false;
+
+ switch (theCondition) {
+ case CC_GT:
+ isFit = aCompValue == 1;
+ break;
+ case GEOMUtils::CC_GE:
+ isFit = aCompValue != -1;
+ break;
+ case GEOMUtils::CC_LT:
+ isFit = aCompValue == -1;
+ break;
+ case GEOMUtils::CC_LE:
+ isFit = aCompValue != 1;
+ break;
+ default:
+ break;
+ }
+
+ return isFit;
}
