--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Toolbox/ParallelSlices.cpp	Fri Oct 14 15:34:11 2016 +0200
@@ -0,0 +1,158 @@
+/**
+ * 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/>.
+ **/
+
+
+#include "ParallelSlices.h"
+
+#include "../Orthanc/Core/Logging.h"
+#include "../Orthanc/Core/OrthancException.h"
+
+namespace OrthancStone
+{
+  ParallelSlices::ParallelSlices()
+  {
+    GeometryToolbox::AssignVector(normal_, 0, 0, 1);
+  }
+
+
+  ParallelSlices::ParallelSlices(const ParallelSlices& other)
+  {
+    normal_ = other.normal_;
+
+    slices_.resize(other.slices_.size());
+
+    for (size_t i = 0; i < slices_.size(); i++)
+    {
+      assert(other.slices_[i] != NULL);
+      slices_[i] = new SliceGeometry(*other.slices_[i]);
+    }
+  }
+
+
+  ParallelSlices::~ParallelSlices()
+  {
+    for (size_t i = 0; i < slices_.size(); i++)
+    {
+      if (slices_[i] != NULL)
+      {
+        delete slices_[i];
+        slices_[i] = NULL;
+      }
+    }
+  }
+
+
+  void ParallelSlices::AddSlice(const SliceGeometry& slice)
+  {
+    if (slices_.empty())
+    {
+      normal_ = slice.GetNormal();
+      slices_.push_back(new SliceGeometry(slice));
+    }
+    else if (GeometryToolbox::IsParallel(slice.GetNormal(), normal_))
+    {
+      slices_.push_back(new SliceGeometry(slice));
+    }
+    else
+    {
+      LOG(ERROR) << "Trying to add a slice that is not parallel to the previous ones";
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
+    }
+  }
+
+
+  void ParallelSlices::AddSlice(const Vector& origin,
+                                const Vector& axisX,
+                                const Vector& axisY)
+  {
+    SliceGeometry slice(origin, axisX, axisY);
+    AddSlice(slice);
+  }
+
+
+  const SliceGeometry& ParallelSlices::GetSlice(size_t index) const
+  {
+    if (index >= slices_.size())
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+    else
+    {
+      return *slices_[index];
+    }
+  }
+
+
+  bool ParallelSlices::ComputeClosestSlice(size_t& closestSlice,
+                                           double& closestDistance,
+                                           const Vector& origin) const
+  {
+    if (slices_.empty())
+    {
+      return false;
+    }
+
+    double reference = boost::numeric::ublas::inner_prod(origin, normal_);
+
+    closestSlice = 0;
+    closestDistance = std::numeric_limits<double>::infinity();
+
+    for (size_t i = 0; i < slices_.size(); i++)
+    {
+      double distance = fabs(boost::numeric::ublas::inner_prod(slices_[i]->GetOrigin(), normal_) - reference);
+
+      if (distance < closestDistance)
+      {
+        closestSlice = i;
+        closestDistance = distance;
+      }
+    }
+
+    return true;
+  }
+
+
+  ParallelSlices* ParallelSlices::Reverse() const
+  {
+    std::auto_ptr<ParallelSlices> reversed(new ParallelSlices);
+
+    for (size_t i = slices_.size(); i > 0; i--)
+    {
+      const SliceGeometry& slice = *slices_[i - 1];
+
+      reversed->AddSlice(slice.GetOrigin(),
+                         -slice.GetAxisX(),
+                         slice.GetAxisY());
+    }
+
+    return reversed.release();
+  }
+}