ENH: Removed the snprintf usage in Atom and Bond.

Change-Id: Ic9e2bd7c61aace8284e18ae9cc8d004a49727969

Filtering/vtkAtom.cxx

@@ -15,6 +15,7 @@ PURPOSE.  See the above copyright notice for more information.
 
 #include "vtkMolecule.h"
 #include "vtkVector.h"
+#include "vtkVectorOperators.h"
 
 #include <assert.h>
 
@@ -34,13 +35,10 @@ vtkAtom::~vtkAtom()
 //----------------------------------------------------------------------------
 void vtkAtom::PrintSelf(ostream &os, vtkIndent indent)
 {
-  char buffer[80];
-  double coord[3];
-  this->GetPosition(coord);
-  snprintf(buffer, 80, "Molecule: %p Id: %4d Ele: %3d Pos: %9.5f %9.5f %9.5f\n",
-           this->Molecule, this->Id, this->GetAtomicNumber(),
-           coord[0], coord[1], coord[2]);
-  os << indent << buffer;
+  os << indent << "Molecule: " << this->Molecule
+     << " Id: " << this->Id
+     << " Element: " << this->GetAtomicNumber()
+     << " Position: " << this->GetPositionAsVector3f() << endl;
 }
 
 //----------------------------------------------------------------------------

Filtering/vtkBond.cxx

@@ -39,19 +39,12 @@ vtkBond::~vtkBond()
 //----------------------------------------------------------------------------
 void vtkBond::PrintSelf(ostream &os, vtkIndent indent)
 {
-  char buffer[80];
-  double coord[3];
-  snprintf(buffer, 80,
-           "Parent: %p Id: %4d Order: %1d Len: %9.5f BeginAtomId: %d "
-           "EndAtomId: %d\n", this->Molecule, this->Id, this->GetBondOrder(),
-           this->GetBondLength(), this->BeginAtomId, this->EndAtomId);
-  os << indent << buffer;
-
-  os << indent << "Bonded Atoms:\n";
-  this->Molecule->GetAtom(this->BeginAtomId).PrintSelf
-    (os, indent.GetNextIndent());
-  this->Molecule->GetAtom(this->EndAtomId).PrintSelf
-    (os, indent.GetNextIndent());
+  os << indent << "Molecule: " << this->Molecule
+     << " Id: " << this->Id
+     << " Order: " << this->GetBondOrder()
+     << " Length: " << this->GetBondLength()
+     << " BeginAtomId: " << this->BeginAtomId
+     << " EndAtomId: " << this->EndAtomId << endl;
 }
 
 //----------------------------------------------------------------------------