--- /dev/null
+// Copyright (C) 2022-2022 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// 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, 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
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+#include <GEOMImpl_ShapeProximityDriver.hxx>
+#include <GEOMImpl_IProximity.hxx>
+#include <GEOMImpl_Types.hxx>
+
+#include <BRep_Tool.hxx>
+#include <BRepAdaptor_Curve.hxx>
+#include <BRepAdaptor_Surface.hxx>
+#include <BRepExtrema_ShapeProximity.hxx>
+#include <BRepMesh_IncrementalMesh.hxx>
+#include <Extrema_ExtPC.hxx>
+#include <Extrema_ExtPS.hxx>
+#include <Extrema_GenLocateExtCS.hxx>
+#include <Extrema_GenLocateExtSS.hxx>
+#include <Extrema_GenLocateExtPS.hxx>
+#include <Extrema_LocateExtCC.hxx>
+#include <Extrema_LocateExtPC.hxx>
+#include <TopExp_Explorer.hxx>
+#include <TopoDS.hxx>
+
+namespace {
+ static void tessellateShape(const TopoDS_Shape& theShape)
+ {
+ Standard_Boolean isTessellate = Standard_False;
+ TopLoc_Location aLoc;
+ for (TopExp_Explorer anExp(theShape, TopAbs_FACE); anExp.More() && !isTessellate; anExp.Next())
+ {
+ Handle(Poly_Triangulation) aTria = BRep_Tool::Triangulation(TopoDS::Face(anExp.Value()), aLoc);
+ isTessellate = aTria.IsNull();
+ }
+ for (TopExp_Explorer anExp(theShape, TopAbs_EDGE); anExp.More() && !isTessellate; anExp.Next())
+ {
+ Handle(Poly_Polygon3D) aPoly = BRep_Tool::Polygon3D(TopoDS::Edge(anExp.Value()), aLoc);
+ isTessellate = aPoly.IsNull();
+ }
+
+ if (isTessellate)
+ {
+ BRepMesh_IncrementalMesh aMesher(theShape, 0.1);
+ Standard_ProgramError_Raise_if(!aMesher.IsDone(), "Meshing failed");
+ }
+ }
+
+ static Standard_Real paramOnCurve(const BRepAdaptor_Curve& theCurve, const gp_Pnt& thePoint, const Standard_Real theTol)
+ {
+ Extrema_ExtPC aParamSearch(thePoint, theCurve, theCurve.FirstParameter(), theCurve.LastParameter());
+ if (aParamSearch.IsDone())
+ {
+ Standard_Integer anIndMin = 0, aNbExt = aParamSearch.NbExt();
+ Standard_Real aSqDistMin = RealLast();
+ for (Standard_Integer i = 1; i <= aNbExt; ++i)
+ {
+ if (aParamSearch.SquareDistance(i) < aSqDistMin)
+ {
+ anIndMin = i;
+ aSqDistMin = aParamSearch.SquareDistance(i);
+ }
+ }
+ if (anIndMin != 0 && aSqDistMin <= theTol * theTol)
+ {
+ return aParamSearch.Point(anIndMin).Parameter();
+ }
+ }
+ return 0.5 * (theCurve.FirstParameter() + theCurve.LastParameter());
+ }
+
+ static void paramsOnSurf(const BRepAdaptor_Surface& theSurf, const gp_Pnt& thePoint, const Standard_Real theTol,
+ Standard_Real& theU, Standard_Real& theV)
+ {
+ Extrema_ExtPS aParamSearch(thePoint, theSurf, Precision::PConfusion(), Precision::PConfusion());
+ if (aParamSearch.IsDone())
+ {
+ Standard_Integer anIndMin = 0, aNbExt = aParamSearch.NbExt();
+ Standard_Real aSqDistMin = RealLast();
+ for (Standard_Integer i = 1; i <= aNbExt; ++i)
+ {
+ if (aParamSearch.SquareDistance(i) < aSqDistMin)
+ {
+ anIndMin = i;
+ aSqDistMin = aParamSearch.SquareDistance(i);
+ }
+ }
+ if (anIndMin != 0 && aSqDistMin <= theTol * theTol)
+ {
+ return aParamSearch.Point(anIndMin).Parameter(theU, theV);
+ }
+ }
+ theU = 0.5 * (theSurf.FirstUParameter() + theSurf.LastUParameter());
+ theV = 0.5 * (theSurf.FirstVParameter() + theSurf.LastVParameter());
+ }
+
+ static Standard_Real extremaEE(const TopoDS_Edge& theEdge1, const TopoDS_Edge& theEdge2,
+ gp_Pnt& thePoint1, gp_Pnt& thePoint2)
+ {
+ BRepAdaptor_Curve aCurve1(theEdge1);
+ BRepAdaptor_Curve aCurve2(theEdge2);
+
+ TopLoc_Location aLoc;
+ Standard_Real aTol1 = BRep_Tool::Tolerance(theEdge1);
+ Handle(Poly_Polygon3D) aPoly1 = BRep_Tool::Polygon3D (theEdge1, aLoc);
+ if (!aPoly1.IsNull())
+ aTol1 = Max (aTol1, aPoly1->Deflection());
+ Standard_Real aTol2 = BRep_Tool::Tolerance(theEdge2);
+ Handle(Poly_Polygon3D) aPoly2 = BRep_Tool::Polygon3D (theEdge2, aLoc);
+ if (!aPoly2.IsNull())
+ aTol2 = Max (aTol2, aPoly2->Deflection());
+
+ Standard_Real aU1 = paramOnCurve(aCurve1, thePoint1, 2*aTol1);
+ Standard_Real aU2 = paramOnCurve(aCurve2, thePoint2, 2*aTol2);
+
+ Standard_Real aValue = -1.0;
+ Extrema_LocateExtCC anExtr(aCurve1, aCurve2, aU1, aU2);
+ if (anExtr.IsDone())
+ {
+ aValue = Sqrt(anExtr.SquareDistance());
+
+ Extrema_POnCurv aP1, aP2;
+ anExtr.Point(aP1, aP2);
+ thePoint1 = aP1.Value();
+ thePoint2 = aP2.Value();
+ }
+ return aValue;
+ }
+
+ static Standard_Real extremaPE(const gp_Pnt& thePoint,
+ const TopoDS_Edge& theEdge,
+ gp_Pnt& thePointOnEdge)
+ {
+ BRepAdaptor_Curve aCurve (theEdge);
+
+ TopLoc_Location aLoc;
+ Standard_Real aTol = BRep_Tool::Tolerance(theEdge);
+ Handle(Poly_Polygon3D) aPoly = BRep_Tool::Polygon3D (theEdge, aLoc);
+ if (!aPoly.IsNull())
+ aTol = Max (aTol, aPoly->Deflection());
+
+ Standard_Real aParam = paramOnCurve (aCurve, thePointOnEdge, 2*aTol);
+
+ Standard_Real aValue = -1.0;
+ Extrema_LocateExtPC anExtr (thePoint, aCurve, aParam, Precision::PConfusion());
+ if (anExtr.IsDone())
+ {
+ aValue = Sqrt(anExtr.SquareDistance());
+
+ Extrema_POnCurv aPointOnCurve = anExtr.Point();
+ thePointOnEdge = aPointOnCurve.Value();
+ }
+ return aValue;
+ }
+
+ static Standard_Real extremaPF(const gp_Pnt& thePoint,
+ const TopoDS_Face& theFace,
+ gp_Pnt& thePointOnFace)
+ {
+ BRepAdaptor_Surface aSurf (theFace);
+
+ TopLoc_Location aLoc;
+ Standard_Real aTol = BRep_Tool::Tolerance(theFace);
+ Handle(Poly_Triangulation) aTria = BRep_Tool::Triangulation (theFace, aLoc);
+ if (!aTria.IsNull())
+ aTol = Max (aTol, aTria->Deflection());
+
+ Standard_Real aU, aV;
+ paramsOnSurf(aSurf, thePointOnFace, 2*aTol, aU, aV);
+
+ Standard_Real aValue = -1.0;
+ Extrema_GenLocateExtPS anExtr (aSurf);
+ anExtr.Perform (thePoint, aU, aV);
+ if (anExtr.IsDone())
+ {
+ aValue = Sqrt(anExtr.SquareDistance());
+
+ Extrema_POnSurf aPointOnSurf = anExtr.Point();
+ thePointOnFace = aPointOnSurf.Value();
+ }
+ return aValue;
+ }
+
+ static Standard_Real extremaEF(const TopoDS_Edge& theEdge, const TopoDS_Face& theFace,
+ gp_Pnt& thePonE, gp_Pnt& thePonF)
+ {
+ BRepAdaptor_Curve aCurve(theEdge);
+ BRepAdaptor_Surface aSurf(theFace);
+
+ TopLoc_Location aLoc;
+ Standard_Real aTolEdge = BRep_Tool::Tolerance(theEdge);
+ Handle(Poly_Polygon3D) aPoly = BRep_Tool::Polygon3D (theEdge, aLoc);
+ if (!aPoly.IsNull())
+ aTolEdge = Max (aTolEdge, aPoly->Deflection());
+ Standard_Real aTolFace = BRep_Tool::Tolerance(theFace);
+ Handle(Poly_Triangulation) aTria = BRep_Tool::Triangulation (theFace, aLoc);
+ if (!aTria.IsNull())
+ aTolFace = Max (aTolFace, aTria->Deflection());
+
+ Standard_Real aP = paramOnCurve(aCurve, thePonE, 2*aTolEdge);
+ Standard_Real aU, aV;
+ paramsOnSurf(aSurf, thePonF, 2*aTolFace, aU, aV);
+
+ Standard_Real aValue = -1.0;
+ Extrema_GenLocateExtCS anExtr(aCurve, aSurf, aP, aU, aV, Precision::PConfusion(), Precision::PConfusion());
+ if (anExtr.IsDone())
+ {
+ aValue = Sqrt(anExtr.SquareDistance());
+ thePonE = anExtr.PointOnCurve().Value();
+ thePonF = anExtr.PointOnSurface().Value();
+ }
+ return aValue;
+ }
+
+ static Standard_Real extremaFF(const TopoDS_Face& theFace1, const TopoDS_Face& theFace2,
+ gp_Pnt& thePoint1, gp_Pnt& thePoint2)
+ {
+ BRepAdaptor_Surface aSurf1(theFace1);
+ BRepAdaptor_Surface aSurf2(theFace2);
+
+ TopLoc_Location aLoc;
+ Standard_Real aTol1 = BRep_Tool::Tolerance(theFace1);
+ Handle(Poly_Triangulation) aTria1 = BRep_Tool::Triangulation (theFace1, aLoc);
+ if (!aTria1.IsNull())
+ aTol1 = Max (aTol1, aTria1->Deflection());
+ Standard_Real aTol2 = BRep_Tool::Tolerance(theFace2);
+ Handle(Poly_Triangulation) aTria2 = BRep_Tool::Triangulation (theFace2, aLoc);
+ if (!aTria2.IsNull())
+ aTol2 = Max (aTol2, aTria2->Deflection());
+
+ Standard_Real aU1, aV1;
+ paramsOnSurf(aSurf1, thePoint1, 2*aTol1, aU1, aV1);
+ Standard_Real aU2, aV2;
+ paramsOnSurf(aSurf2, thePoint2, 2*aTol2, aU2, aV2);
+
+ Standard_Real aValue = -1.0;
+ Extrema_GenLocateExtSS anExtr(aSurf1, aSurf2, aU1, aV1, aU2, aV2, Precision::PConfusion(), Precision::PConfusion());
+ if (anExtr.IsDone())
+ {
+ aValue = Sqrt(anExtr.SquareDistance());
+ thePoint1 = anExtr.PointOnS1().Value();
+ thePoint2 = anExtr.PointOnS2().Value();
+ }
+ return aValue;
+ }
+}
+
+//=======================================================================
+//function : GetID
+//purpose :
+//=======================================================================
+const Standard_GUID& GEOMImpl_ShapeProximityDriver::GetID()
+{
+ static Standard_GUID aShapeProximityDriver("1C3449A6-E4EB-407D-B623-89261C4BA785");
+ return aShapeProximityDriver;
+}
+
+//=======================================================================
+//function : Execute
+//purpose :
+//=======================================================================
+Standard_Integer GEOMImpl_ShapeProximityDriver::Execute(Handle(TFunction_Logbook)& log) const
+{
+ if (Label().IsNull())
+ return 0;
+
+ Handle(GEOM_Function) aFunction = GEOM_Function::GetFunction(Label());
+ GEOMImpl_IProximity aProximity (aFunction);
+
+ Handle(GEOM_Function) aShapeFunc1, aShapeFunc2;
+ aProximity.GetShapes(aShapeFunc1, aShapeFunc2);
+ if (aShapeFunc1.IsNull() || aShapeFunc2.IsNull())
+ return 0;
+
+ TopoDS_Shape aShape1 = aShapeFunc1->GetValue();
+ TopoDS_Shape aShape2 = aShapeFunc2->GetValue();
+
+ Standard_Real aValue = -1.0;
+
+ if (aFunction->GetType() == PROXIMITY_COARSE)
+ {
+ // tessellate shapes if there is no mesh exists
+ tessellateShape(aShape1);
+ tessellateShape(aShape2);
+
+ // compute proximity basing on the tessellation
+ BRepExtrema_ShapeProximity aCalcProx;
+ aCalcProx.LoadShape1(aShape1);
+ aCalcProx.LoadShape2(aShape2);
+ aCalcProx.SetNbSamples1(aProximity.GetNbSamples(PROXIMITY_ARG_SAMPLES1));
+ aCalcProx.SetNbSamples2(aProximity.GetNbSamples(PROXIMITY_ARG_SAMPLES2));
+ aCalcProx.Perform();
+
+ if (aCalcProx.IsDone())
+ {
+ aValue = aCalcProx.Proximity();
+ aProximity.SetProximityPoints(aCalcProx.ProximityPoint1(),
+ aCalcProx.ProximityPoint2());
+ aProximity.SetStatusOfPoints((Standard_Integer)aCalcProx.ProxPntStatus1(),
+ (Standard_Integer)aCalcProx.ProxPntStatus2());
+ }
+ else
+ Standard_ConstructionError::Raise("Failed to compute coarse proximity");
+ }
+ else if (aFunction->GetType() == PROXIMITY_PRECISE)
+ {
+ // coarse proximity value
+ // in some cases this value cannot be precised
+ // it can be precised only if at least one point is in the middle of the shape
+ aValue = aProximity.GetValue();
+
+ TopAbs_ShapeEnum aType1 = aShape1.ShapeType();
+ TopAbs_ShapeEnum aType2 = aShape2.ShapeType();
+
+ gp_Pnt aPnt1, aPnt2;
+ BRepExtrema_ProximityDistTool::ProxPnt_Status aStatus1, aStatus2;
+ Standard_Integer intStatus1, intStatus2;
+ aProximity.GetProximityPoints(aPnt1, aPnt2);
+ aProximity.GetStatusOfPoints(intStatus1, intStatus2);
+ aStatus1 = (BRepExtrema_ProximityDistTool::ProxPnt_Status)intStatus1;
+ aStatus2 = (BRepExtrema_ProximityDistTool::ProxPnt_Status)intStatus2;
+
+ if (aType1 == TopAbs_EDGE)
+ {
+ if (aType2 == TopAbs_EDGE)
+ {
+ if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaEE(TopoDS::Edge(aShape1), TopoDS::Edge(aShape2), aPnt1, aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaPE(aPnt1, TopoDS::Edge(aShape2), aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER)
+ {
+ aValue = extremaPE(aPnt2, TopoDS::Edge(aShape1), aPnt1);
+ }
+ }
+ else if (aType2 == TopAbs_FACE)
+ {
+ if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaEF(TopoDS::Edge(aShape1), TopoDS::Face(aShape2), aPnt1, aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaPF(aPnt1, TopoDS::Face(aShape2), aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER)
+ {
+ aValue = extremaPE(aPnt2, TopoDS::Edge(aShape1), aPnt1);
+ }
+ }
+ }
+ else if (aType1 == TopAbs_FACE)
+ {
+ if (aType2 == TopAbs_EDGE)
+ {
+ if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaEF(TopoDS::Edge(aShape2), TopoDS::Face(aShape1), aPnt2, aPnt1);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaPE(aPnt1, TopoDS::Edge(aShape2), aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER)
+ {
+ aValue = extremaPF(aPnt2, TopoDS::Face(aShape1), aPnt1);
+ }
+ }
+ else if (aType2 == TopAbs_FACE)
+ {
+ if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaFF(TopoDS::Face(aShape1), TopoDS::Face(aShape2), aPnt1, aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE)
+ {
+ aValue = extremaPF(aPnt1, TopoDS::Face(aShape2), aPnt2);
+ }
+ else if (aStatus1 == BRepExtrema_ProximityDistTool::ProxPnt_Status_MIDDLE &&
+ aStatus2 == BRepExtrema_ProximityDistTool::ProxPnt_Status_BORDER)
+ {
+ aValue = extremaPF(aPnt2, TopoDS::Face(aShape1), aPnt1);
+ }
+ }
+ }
+
+ if (aValue >= 0)
+ aProximity.SetProximityPoints(aPnt1, aPnt2);
+ else
+ Standard_ConstructionError::Raise("Failed to compute precise proximity");
+ }
+ else
+ {
+ Standard_ConstructionError::Raise("incorrect algorithm");
+ }
+
+ aProximity.SetValue(aValue);
+ log->SetTouched(Label());
+ return 1;
+}
+
+//=======================================================================
+//function : GetCreationInformation
+//purpose : Returns a name of creation operation and names and values of creation parameters
+//=======================================================================
+bool GEOMImpl_ShapeProximityDriver::GetCreationInformation(
+ std::string& theOperationName,
+ std::vector<GEOM_Param>& theParams)
+{
+ if (Label().IsNull())
+ return false;
+
+ Handle(GEOM_Function) aFunc = GEOM_Function::GetFunction(Label());
+ GEOMImpl_IProximity aProxFunc(aFunc);
+ Handle(GEOM_Function) aShape1, aShape2;
+ aProxFunc.GetShapes(aShape1, aShape2);
+
+ if (aFunc->GetType() == PROXIMITY_COARSE)
+ theOperationName = "PROXIMITY_COARSE";
+ else if (aFunc->GetType() == PROXIMITY_PRECISE)
+ theOperationName = "PROXIMITY_PRECISE";
+
+ AddParam(theParams, "Shape1", aShape1);
+ AddParam(theParams, "Shape2", aShape2);
+
+ return false;
+}
+
+IMPLEMENT_STANDARD_RTTIEXT(GEOMImpl_ShapeProximityDriver, GEOM_BaseDriver)
