--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Toolbox/GeometryToolbox.h	Fri Oct 14 15:34:11 2016 +0200
@@ -0,0 +1,111 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include <boost/numeric/ublas/vector.hpp>
+
+
+namespace OrthancStone
+{
+  typedef boost::numeric::ublas::vector<double>   Vector;
+
+  namespace GeometryToolbox
+  {
+    void Print(const Vector& v);
+
+    bool ParseVector(Vector& target,
+                     const std::string& value);
+
+    void AssignVector(Vector& v,
+                      double v1,
+                      double v2);
+
+    void AssignVector(Vector& v,
+                      double v1,
+                      double v2,
+                      double v3);
+
+    inline bool IsNear(double x,
+                       double y,
+                       double threshold)
+    {
+      return fabs(x - y) < threshold;
+    }
+
+    bool IsNear(double x,
+                double y);
+
+    inline bool IsCloseToZero(double x)
+    {
+      return IsNear(x, 0.0);
+    }
+
+    void NormalizeVector(Vector& u);
+
+    void CrossProduct(Vector& result,
+                      const Vector& u,
+                      const Vector& v);
+
+    void ProjectPointOntoPlane(Vector& result,
+                               const Vector& point,
+                               const Vector& planeNormal,
+                               const Vector& planeOrigin);
+
+    bool IsParallel(const Vector& u,
+                    const Vector& v);
+
+    bool IsParallelOrOpposite(bool& isOpposite,
+                              const Vector& u,
+                              const Vector& v);
+
+    bool IntersectTwoPlanes(Vector& p,
+                            Vector& direction,
+                            const Vector& origin1,
+                            const Vector& normal1,
+                            const Vector& origin2,
+                            const Vector& normal2);
+
+    bool ClipLineToRectangle(double& x1,  // Coordinates of the clipped line (out)
+                             double& y1,
+                             double& x2,
+                             double& y2,
+                             const double ax,  // Two points defining the line (in)
+                             const double ay,
+                             const double bx,
+                             const double by,
+                             const double& xmin,   // Coordinates of the rectangle (in)
+                             const double& ymin,
+                             const double& xmax,
+                             const double& ymax);
+  };
+}