From 184e72d6817dd7450c804735686745c6ba712943 Mon Sep 17 00:00:00 2001
From: David Sarrut <david.sarrut@gmail.com>
Date: Wed, 19 Oct 2011 15:06:20 +0200
Subject: [PATCH] Utils for bounding box calculation (formerly in
 clitkSegmentationUtils)

---
 itk/clitkBoundingBoxUtils.h   |  53 +++++++++++++++++
 itk/clitkBoundingBoxUtils.txx | 106 ++++++++++++++++++++++++++++++++++
 2 files changed, 159 insertions(+)
 create mode 100644 itk/clitkBoundingBoxUtils.h
 create mode 100644 itk/clitkBoundingBoxUtils.txx

diff --git a/itk/clitkBoundingBoxUtils.h b/itk/clitkBoundingBoxUtils.h
new file mode 100644
index 0000000..2138d63
--- /dev/null
+++ b/itk/clitkBoundingBoxUtils.h
@@ -0,0 +1,53 @@
+/*=========================================================================
+  Program:   vv                     http://www.creatis.insa-lyon.fr/rio/vv
+
+  Authors belong to: 
+  - University of LYON              http://www.universite-lyon.fr/
+  - Léon Bérard cancer center       http://oncora1.lyon.fnclcc.fr
+  - CREATIS CNRS laboratory         http://www.creatis.insa-lyon.fr
+
+  This software is distributed WITHOUT ANY WARRANTY; without even
+  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+  PURPOSE.  See the copyright notices for more information.
+
+  It is distributed under dual licence
+
+  - BSD        See included LICENSE.txt file
+  - CeCILL-B   http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
+  ======================================================================-====*/
+
+#ifndef CLITKBOUNDINGBOXUTILS_H
+#define CLITKBOUNDINGBOXUTILS_H
+
+// clitk
+#include "clitkCommon.h"
+
+// itk
+#include <itkBoundingBox.h>
+
+namespace clitk {
+
+  //--------------------------------------------------------------------
+  template<class ImageType>
+  void ComputeBBFromImageRegion(const ImageType * image, 
+                                typename ImageType::RegionType region,
+                                typename itk::BoundingBox<unsigned long, 
+                                                          ImageType::ImageDimension>::Pointer bb);
+  
+  //--------------------------------------------------------------------
+  template<int Dimension>
+  void ComputeBBIntersection(typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbo, 
+                             typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi1, 
+                             typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi2);
+
+  //--------------------------------------------------------------------
+  template<class ImageType>
+  void ComputeRegionFromBB(const ImageType * image, 
+                           const typename itk::BoundingBox<unsigned long, 
+                                                           ImageType::ImageDimension>::Pointer bb, 
+                           typename ImageType::RegionType & region);
+} // end clitk namespace
+
+#include "clitkBoundingBoxUtils.txx"
+
+#endif
diff --git a/itk/clitkBoundingBoxUtils.txx b/itk/clitkBoundingBoxUtils.txx
new file mode 100644
index 0000000..26f38b2
--- /dev/null
+++ b/itk/clitkBoundingBoxUtils.txx
@@ -0,0 +1,106 @@
+/*=========================================================================
+  Program:   vv                     http://www.creatis.insa-lyon.fr/rio/vv
+
+  Authors belong to: 
+  - University of LYON              http://www.universite-lyon.fr/
+  - Léon Bérard cancer center       http://www.centreleonberard.fr
+  - CREATIS CNRS laboratory         http://www.creatis.insa-lyon.fr
+
+  This software is distributed WITHOUT ANY WARRANTY; without even
+  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+  PURPOSE.  See the copyright notices for more information.
+
+  It is distributed under dual licence
+
+  - BSD        See included LICENSE.txt file
+  - CeCILL-B   http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
+  ======================================================================-====*/
+
+namespace clitk {
+
+  //--------------------------------------------------------------------
+  template<class ImageType>
+  void ComputeBBFromImageRegion(const ImageType * image, 
+                                typename ImageType::RegionType region,
+                                typename itk::BoundingBox<unsigned long, 
+                                ImageType::ImageDimension>::Pointer bb) {
+    typedef typename ImageType::IndexType IndexType;
+    IndexType firstIndex;
+    IndexType lastIndex;
+    for(unsigned int i=0; i<image->GetImageDimension(); i++) {
+      firstIndex[i] = region.GetIndex()[i];
+      lastIndex[i] = firstIndex[i]+region.GetSize()[i];
+    }
+
+    typedef itk::BoundingBox<unsigned long, 
+                             ImageType::ImageDimension> BBType;
+    typedef typename BBType::PointType PointType;
+    PointType lastPoint;
+    PointType firstPoint;
+    image->TransformIndexToPhysicalPoint(firstIndex, firstPoint);
+    image->TransformIndexToPhysicalPoint(lastIndex, lastPoint);
+
+    bb->SetMaximum(lastPoint);
+    bb->SetMinimum(firstPoint);
+  }
+  //--------------------------------------------------------------------
+
+
+  //--------------------------------------------------------------------
+  template<int Dimension>
+  void ComputeBBIntersection(typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbo, 
+                             typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi1, 
+                             typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi2) {
+
+    typedef itk::BoundingBox<unsigned long, Dimension> BBType;
+    typedef typename BBType::PointType PointType;
+    PointType lastPoint;
+    PointType firstPoint;
+
+    for(unsigned int i=0; i<Dimension; i++) {
+      firstPoint[i] = std::max(bbi1->GetMinimum()[i], 
+                               bbi2->GetMinimum()[i]);
+      lastPoint[i] = std::min(bbi1->GetMaximum()[i], 
+                              bbi2->GetMaximum()[i]);
+    }
+
+    bbo->SetMaximum(lastPoint);
+    bbo->SetMinimum(firstPoint);
+  }
+  //--------------------------------------------------------------------
+
+
+  //--------------------------------------------------------------------
+  template<class ImageType>
+  void ComputeRegionFromBB(const ImageType * image, 
+                           const typename itk::BoundingBox<unsigned long, 
+                                                           ImageType::ImageDimension>::Pointer bb, 
+                           typename ImageType::RegionType & region) {
+    // Types
+    typedef typename ImageType::IndexType  IndexType;
+    typedef typename ImageType::PointType  PointType;
+    typedef typename ImageType::RegionType RegionType;
+    typedef typename ImageType::SizeType   SizeType;
+
+    // Region starting point
+    IndexType regionStart;
+    PointType start = bb->GetMinimum();
+    image->TransformPhysicalPointToIndex(start, regionStart);
+    
+    // Region size
+    SizeType regionSize;
+    PointType maxs = bb->GetMaximum();
+    PointType mins = bb->GetMinimum();
+    for(unsigned int i=0; i<ImageType::ImageDimension; i++) {
+      regionSize[i] = lrint((maxs[i] - mins[i])/image->GetSpacing()[i]);
+    }
+   
+    // Create region
+    region.SetIndex(regionStart);
+    region.SetSize(regionSize);
+  }
+  //--------------------------------------------------------------------
+
+
+} // end of namespace
+
-- 
2.45.1