--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Toolbox/SliceGeometry.h	Fri Oct 14 15:34:11 2016 +0200
@@ -0,0 +1,102 @@
+/**
+ * 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 "DicomDataset.h"
+
+namespace OrthancStone
+{
+  // Geometry of a 3D plane, NOT thread-safe
+  class SliceGeometry
+  {
+  private:
+    Vector    origin_;
+    Vector    normal_;
+    Vector    axisX_;
+    Vector    axisY_;
+
+    void CheckAndComputeNormal();
+
+    void Setup(const std::string& imagePositionPatient,
+               const std::string& imageOrientationPatient);
+
+    void SetupCanonical();
+
+  public:
+    SliceGeometry()
+    {
+      SetupCanonical();
+    }
+
+    SliceGeometry(const Vector& origin,
+                  const Vector& axisX,
+                  const Vector& axisY);
+
+    SliceGeometry(const DicomDataset& dicom);
+
+    SliceGeometry(const std::string& imagePositionPatient,
+                  const std::string& imageOrientationPatient)
+    {
+      Setup(imagePositionPatient, imageOrientationPatient);
+    }
+
+    const Vector& GetNormal() const
+    {
+      return normal_;
+    }
+
+    const Vector& GetOrigin() const
+    {
+      return origin_;
+    }
+
+    const Vector& GetAxisX() const
+    {
+      return axisX_;
+    }
+
+    const Vector& GetAxisY() const
+    {
+      return axisY_;
+    }
+
+    Vector MapSliceToWorldCoordinates(double x,
+                                      double y) const;
+    
+    double ProjectAlongNormal(const Vector& point) const;
+
+    void ProjectPoint(double& offsetX,
+                      double& offsetY,
+                      const Vector& point) const;
+  };
+}