+/*!
+ To find a gravity center of object
+ \param theObjId - identification of object
+*/
+double*
+SALOME_Actor
+::GetGravityCenter( int theObjId )
+{
+ double* result = new double[3];
+ for( int i = 0; i < 3; i++ )
+ result[i]= 0.0;
+
+ vtkPoints* points = GetElemCell( theObjId )->GetPoints();
+ int nbPoints = points->GetNumberOfPoints();
+
+ if( nbPoints <= 0 )
+ return NULL;
+
+ for( int i = 0; i < nbPoints; i++ )
+ {
+ double* aPoint = points->GetPoint(i);
+ result[0] += aPoint[0];
+ result[1] += aPoint[1];
+ result[2] += aPoint[2];
+ }
+ result[0] = result[0] / nbPoints;
+ result[1] = result[1] / nbPoints;
+ result[2] = result[2] / nbPoints;
+
+ return result;
+}
+