r187: *** empty log message ***

[ctsim.git] / include / backprojectors.h

diff --git a/include/backprojectors.h b/include/backprojectors.h
index b36dfb83cefbb7ef776ef5d4e2da3871e378a9ff..ef70d0581657f58ea6e10d6389027a178071282c 100644 (file)
--- a/include/backprojectors.h
+++ b/include/backprojectors.h
@@ -9,7 +9,7 @@
 **  This is part of the CTSim program
 **  Copyright (C) 1983-2000 Kevin Rosenberg
 **
-**  $Id: backprojectors.h,v 1.14 2000/08/31 08:38:58 kevin Exp $
+**  $Id: backprojectors.h,v 1.15 2000/09/02 05:10:39 kevin Exp $
 **
 **  This program is free software; you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License (version 2) as
@@ -155,7 +155,7 @@ class BackprojectTable : public Backproject
 {
  public:
   BackprojectTable (const Projections& proj, ImageFile& im, int interpID, const int interpFactor);
-  ~BackprojectTable ();
+  virtual ~BackprojectTable ();
 
   void BackprojectView (const double* const t, double view_angle);
 
@@ -220,6 +220,9 @@ class BackprojectEquilinear : public BackprojectTable
       {}
 
   void BackprojectView (const double* const t, double view_angle);
+
+  virtual ~BackprojectEquilinear()
+      {}
 };
 
 class BackprojectEquiangular : public BackprojectTable
@@ -230,6 +233,9 @@ class BackprojectEquiangular : public BackprojectTable
       {}
 
   void BackprojectView (const double* const t, double view_angle);
+
+  virtual ~BackprojectEquiangular()
+      {}
 };