IPAL54364: Add Gravity Center measurement

[modules/smesh.git] / src / SMESH_I / SMESH_Measurements_i.cxx

diff --git a/src/SMESH_I/SMESH_Measurements_i.cxx b/src/SMESH_I/SMESH_Measurements_i.cxx
index 5107e5b2bf35edc2b10617665afacd44206af6c8..ca0103c016e6cb9994a8eb21f1d0ef7c35dcb8cf 100644 (file)
--- a/src/SMESH_I/SMESH_Measurements_i.cxx
+++ b/src/SMESH_I/SMESH_Measurements_i.cxx
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2016  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
@@ -6,7 +6,7 @@
 // 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
@@ -22,18 +22,21 @@
 //  File   : SMESH_Measurements_i.cxx
 //  Author : Pavel TELKOV, Open CASCADE S.A.S. (pavel.telkov@opencascade.com)
 
-#include "SMESH_Measurements_i.hxx"
+#ifdef WIN32
+#define NOMINMAX
+#endif
 
-#include "SMESH_Gen_i.hxx"
-#include "SMESH_Filter_i.hxx"
-#include "SMESH_PythonDump.hxx"
+#include "SMESH_Measurements_i.hxx"
 
+#include "SMDS_ElemIterator.hxx"
 #include "SMDS_Mesh.hxx"
-#include "SMDS_MeshNode.hxx"
 #include "SMDS_MeshElement.hxx"
-#include "SMDS_ElemIterator.hxx"
-
+#include "SMDS_MeshNode.hxx"
 #include "SMESHDS_Mesh.hxx"
+#include "SMESH_Filter_i.hxx"
+#include "SMESH_Gen_i.hxx"
+#include "SMESH_MeshAlgos.hxx"
+#include "SMESH_PythonDump.hxx"
 
 
 using namespace SMESH;
@@ -132,7 +135,8 @@ static bool isNodeType (SMESH::array_of_ElementType_var theTypes)
   return theTypes->length() > 0 && theTypes[0] == SMESH::NODE;
 }
 
-static double getNumericalValue(SMESH::SMESH_IDSource_ptr theSource, SMESH::Controls::NumericalFunctorPtr theFunctor)
+static double getNumericalValue(SMESH::SMESH_IDSource_ptr            theSource,
+                                SMESH::Controls::NumericalFunctorPtr theFunctor)
 {
   double value = 0;
 
@@ -142,7 +146,7 @@ static double getNumericalValue(SMESH::SMESH_IDSource_ptr theSource, SMESH::Cont
       theFunctor->SetMesh( aMesh );
       
       SMESH::long_array_var anElementsId = theSource->GetIDs();
-      for (int i = 0; i < anElementsId->length(); i++) {
+      for ( CORBA::ULong i = 0; i < anElementsId->length(); i++) {
         value += theFunctor->GetValue( anElementsId[i] );
       }
     }
@@ -220,12 +224,12 @@ static void enlargeBoundingBox(const SMDS_MeshNode* theNode,
     theMeasure.node1 = theNode->GetID();
   }
   else {
-    theMeasure.minX = min( theMeasure.minX, theNode->X() );
-    theMeasure.maxX = max( theMeasure.maxX, theNode->X() );
-    theMeasure.minY = min( theMeasure.minY, theNode->Y() );
-    theMeasure.maxY = max( theMeasure.maxY, theNode->Y() );
-    theMeasure.minZ = min( theMeasure.minZ, theNode->Z() );
-    theMeasure.maxZ = max( theMeasure.maxZ, theNode->Z() );
+    theMeasure.minX = std::min( theMeasure.minX, theNode->X() );
+    theMeasure.maxX = std::max( theMeasure.maxX, theNode->X() );
+    theMeasure.minY = std::min( theMeasure.minY, theNode->Y() );
+    theMeasure.maxY = std::max( theMeasure.maxY, theNode->Y() );
+    theMeasure.minZ = std::min( theMeasure.minZ, theNode->Z() );
+    theMeasure.maxZ = std::max( theMeasure.maxZ, theNode->Z() );
   }
 }
 
@@ -303,3 +307,45 @@ double Measurements_i::Volume(SMESH::SMESH_IDSource_ptr theSource)
 {
   return getNumericalValue( theSource, SMESH::Controls::NumericalFunctorPtr(new SMESH::Controls::Volume()) );
 }
+
+//=======================================================================
+//function : GravityCenter
+//purpose  : return gravity center of the source: average coordinates of all nodes
+//=======================================================================
+
+SMESH::PointStruct Measurements_i::GravityCenter(SMESH::SMESH_IDSource_ptr theSource)
+{
+  SMESH::PointStruct grCenter = { 0.,0.,0. };
+  const SMESHDS_Mesh* mesh = getMesh( theSource );
+  if ( !mesh )
+    return grCenter;
+
+  // unmark all nodes; visited nodes will be marked
+  SMESH_MeshAlgos::MarkElems( mesh->nodesIterator(), /*isMarked=*/false );
+
+  gp_XYZ sumCoord( 0,0,0 );
+  int nodeCount = 0;
+
+  SMDS_ElemIteratorPtr eIt = SMESH_Mesh_i::GetElements( theSource, SMESH::ALL );
+  while ( eIt->more() )
+  {
+    const SMDS_MeshElement*   elem = eIt->next();
+    for ( SMDS_NodeIteratorPtr nIt = elem->nodeIterator(); nIt->more(); )
+    {
+      const SMDS_MeshNode* n = nIt->next();
+      if ( !n->isMarked() )
+      {
+        sumCoord += SMESH_NodeXYZ( n );
+        ++nodeCount;
+        n->setIsMarked( true );
+      }
+    }
+  }
+  sumCoord /= nodeCount;
+
+  grCenter.x = sumCoord.X();
+  grCenter.y = sumCoord.Y();
+  grCenter.z = sumCoord.Z();
+
+  return grCenter;
+}