-// Copyright (C) 2005 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.
-//
-// 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.
+// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
//
-// 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
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
-// See http://www.salome-platform.org/
+// 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.
+//
+// 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 <Standard_Stream.hxx>
#include <GEOMImpl_MeasureDriver.hxx>
#include <BRep_Tool.hxx>
#include <BRepGProp.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
+#include <BRepBuilderAPI_MakeEdge.hxx>
#include <TopAbs.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Shape.hxx>
#include <GProp_GProps.hxx>
+#include <GeomLProp_SLProps.hxx>
+#include <Geom_Surface.hxx>
+
+#include <Bnd_Box.hxx>
+#include <BRepBndLib.hxx>
+#include <BRepAdaptor_Surface.hxx>
+#include <ShapeAnalysis_Surface.hxx>
#include <gp_Pnt.hxx>
#include <Precision.hxx>
TopoDS_Shape aShape;
- if (aType == CDG_MEASURE) {
+ if (aType == CDG_MEASURE)
+ {
Handle(GEOM_Function) aRefBase = aCI.GetBase();
TopoDS_Shape aShapeBase = aRefBase->GetValue();
if (aShapeBase.IsNull()) {
}
aShape = BRepBuilderAPI_MakeVertex(aCenterMass).Shape();
+ }
+ else if (aType == VECTOR_FACE_NORMALE)
+ {
+ // Face
+ Handle(GEOM_Function) aRefBase = aCI.GetBase();
+ TopoDS_Shape aShapeBase = aRefBase->GetValue();
+ if (aShapeBase.IsNull()) {
+ Standard_NullObject::Raise("Face for normale calculation is null");
+ }
+ if (aShapeBase.ShapeType() != TopAbs_FACE) {
+ Standard_NullObject::Raise("Shape for normale calculation is not a face");
+ }
+ TopoDS_Face aFace = TopoDS::Face(aShapeBase);
+
+ // Point
+ gp_Pnt p1 (0,0,0);
+
+ Handle(GEOM_Function) aPntFunc = aCI.GetPoint();
+ if (!aPntFunc.IsNull())
+ {
+ TopoDS_Shape anOptPnt = aPntFunc->GetValue();
+ if (anOptPnt.IsNull())
+ Standard_NullObject::Raise("Invalid shape given for point argument");
+ p1 = BRep_Tool::Pnt(TopoDS::Vertex(anOptPnt));
+ }
+ else
+ {
+ gp_Ax3 aPos = GEOMImpl_IMeasureOperations::GetPosition(aFace);
+ p1 = aPos.Location();
+ }
+
+ // Point parameters on surface
+ Handle(Geom_Surface) aSurf = BRep_Tool::Surface(aFace);
+ Handle(ShapeAnalysis_Surface) aSurfAna = new ShapeAnalysis_Surface (aSurf);
+ gp_Pnt2d pUV = aSurfAna->ValueOfUV(p1, Precision::Confusion());
+
+ // Normal direction
+ gp_Vec Vec1,Vec2;
+ BRepAdaptor_Surface SF (aFace);
+ SF.D1(pUV.X(), pUV.Y(), p1, Vec1, Vec2);
+ gp_Vec V = Vec1.Crossed(Vec2);
+ Standard_Real mod = V.Magnitude();
+ if (mod < Precision::Confusion())
+ Standard_NullObject::Raise("Normal vector of a face has null magnitude");
+
+ // Set length of normal vector to average radius of curvature
+ Standard_Real radius = 0.0;
+ GeomLProp_SLProps aProperties (aSurf, pUV.X(), pUV.Y(), 2, Precision::Confusion());
+ if (aProperties.IsCurvatureDefined()) {
+ Standard_Real radius1 = Abs(aProperties.MinCurvature());
+ Standard_Real radius2 = Abs(aProperties.MaxCurvature());
+ if (Abs(radius1) > Precision::Confusion()) {
+ radius = 1.0 / radius1;
+ if (Abs(radius2) > Precision::Confusion()) {
+ radius = (radius + 1.0 / radius2) / 2.0;
+ }
+ }
+ else {
+ if (Abs(radius2) > Precision::Confusion()) {
+ radius = 1.0 / radius2;
+ }
+ }
+ }
+
+ // Set length of normal vector to average dimension of the face
+ // (only if average radius of curvature is not appropriate)
+ if (radius < Precision::Confusion()) {
+ Bnd_Box B;
+ Standard_Real Xmin, Xmax, Ymin, Ymax, Zmin, Zmax;
+ BRepBndLib::Add(aFace, B);
+ B.Get(Xmin, Ymin, Zmin, Xmax, Ymax, Zmax);
+ radius = ((Xmax - Xmin) + (Ymax - Ymin) + (Zmax - Zmin)) / 3.0;
+ }
- } else {
+ if (radius < Precision::Confusion())
+ radius = 1.0;
+
+ V *= radius / mod;
+
+ // consider the face orientation
+ if (aFace.Orientation() == TopAbs_REVERSED ||
+ aFace.Orientation() == TopAbs_INTERNAL) {
+ V = - V;
+ }
+
+ // Edge
+ gp_Pnt p2 = p1.Translated(V);
+ BRepBuilderAPI_MakeEdge aBuilder (p1, p2);
+ if (!aBuilder.IsDone())
+ Standard_NullObject::Raise("Vector construction failed");
+ aShape = aBuilder.Shape();
+ }
+ else {
}
if (aShape.IsNull()) return 0;
log.SetTouched(Label());
- return 1;
+ return 1;
}
