--- /dev/null
+// Copyright (C) 2007-2021 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, 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_ITestOperations.hxx>
+
+#include <BRepBndLib.hxx>
+#include <BRepBuilderAPI_Copy.hxx>
+#include <BRepMesh_IncrementalMesh.hxx>
+#include <BRepTools.hxx>
+#include <Bnd_Box.hxx>
+#include <utilities.h>
+
+#ifndef MAX2
+#define MAX2(X, Y) (Abs(X) > Abs(Y) ? Abs(X) : Abs(Y))
+#endif
+#ifndef MAX3
+#define MAX3(X, Y, Z) (MAX2(MAX2(X, Y), Z))
+#endif
+
+//=============================================================================
+/*!
+ * constructor:
+ */
+//=============================================================================
+GEOMImpl_ITestOperations::GEOMImpl_ITestOperations(GEOM_Engine* theEngine)
+: GEOM_IOperations(theEngine)
+{
+ MESSAGE("GEOMImpl_ITestOperations::GEOMImpl_ITestOperations");
+}
+
+//=============================================================================
+/*!
+ * destructor
+ */
+//=============================================================================
+GEOMImpl_ITestOperations::~GEOMImpl_ITestOperations()
+{
+ MESSAGE("GEOMImpl_ITestOperations::~GEOMImpl_ITestOperations");
+}
+
+
+//=============================================================================
+/*!
+ * \brief Build a mesh on (a copy of ) the given shape.
+ *
+ * This test function is aimed for checking performance of OCCT tesselation
+ * algorithm on particlar geometrical shapes.
+ *
+ * \param theShape is a source object
+ * \param theLinearDeflection is a value of deflection coefficient
+ * \param theIsRelative says if given value of deflection is relative to shape's bounding box
+ * \param theAngularDeflection is a angular deflection for edges in radians
+ * \return \c true in case of success; otherwise \c false.
+ */
+//=============================================================================
+bool GEOMImpl_ITestOperations::Tesselate(Handle(GEOM_Object) theShape,
+ double theLinearDeflection,
+ bool theIsRelative,
+ double theAngularDeflection)
+{
+ // ATTENTION!
+ // We don't need results of this method to be present in the data tree;
+ // so we don't need a driver for it.
+
+ // reset error code
+ SetErrorCode(KO);
+ // create a copy of the source shape
+ TopoDS_Shape aShape = BRepBuilderAPI_Copy(theShape->GetValue()).Shape();
+ // use default deflection if necessary
+ if (theLinearDeflection <= 0)
+ theLinearDeflection = 0.001;
+ // compute absolute deflection if necessary: 0.001
+ if (theIsRelative) {
+ Standard_Real aXmin, aYmin, aZmin, aXmax, aYmax, aZmax;
+ Bnd_Box bndBox;
+ BRepBndLib::Add(aShape, bndBox);
+ bndBox.Get(aXmin, aYmin, aZmin, aXmax, aYmax, aZmax);
+ theLinearDeflection = MAX3(aXmax-aXmin, aYmax-aYmin, aZmax-aZmin) * theLinearDeflection * 4;
+ }
+ // use default deviation angle if necessary: 20 degrees
+ if (theAngularDeflection <= 0)
+ theAngularDeflection = 20. * M_PI / 180.;
+ // compute triangulation
+ BRepTools::Clean(aShape);
+ BRepMesh_IncrementalMesh aMesh(aShape, theLinearDeflection, Standard_False, theAngularDeflection);
+ // set OK status and return
+ SetErrorCode(OK);
+ return true;
+}
