From d2d75b63a31a4bfbbed0c22333e34dba688e6503 Mon Sep 17 00:00:00 2001
From: David Sarrut <david.sarrut@gmail.com>
Date: Fri, 18 Nov 2011 16:54:06 +0100
Subject: [PATCH] Add compute intersection

---
 itk/clitkBoundingBoxUtils.h   |  7 +++++++
 itk/clitkBoundingBoxUtils.txx | 18 ++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/itk/clitkBoundingBoxUtils.h b/itk/clitkBoundingBoxUtils.h
index 311e67d..2fcaddd 100644
--- a/itk/clitkBoundingBoxUtils.h
+++ b/itk/clitkBoundingBoxUtils.h
@@ -40,6 +40,13 @@ namespace clitk {
                              typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi1, 
                              typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi2);
 
+  //--------------------------------------------------------------------
+  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, 
+                             int dimension);
+
   //--------------------------------------------------------------------
   template<int Dimension>
   void ComputeBBUnion(typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbo, 
diff --git a/itk/clitkBoundingBoxUtils.txx b/itk/clitkBoundingBoxUtils.txx
index d6fbc24..9f277cb 100644
--- a/itk/clitkBoundingBoxUtils.txx
+++ b/itk/clitkBoundingBoxUtils.txx
@@ -67,6 +67,24 @@ namespace clitk {
 
   ///--------------------------------------------------------------------
   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, 
+                             int dimension) {
+    typedef itk::BoundingBox<unsigned long, Dimension> BBType;
+    typedef typename BBType::PointType PointType;
+    PointType lastPoint;
+    PointType firstPoint;
+    firstPoint[dimension] = std::max(bbi1->GetMinimum()[dimension], bbi2->GetMinimum()[dimension]);
+    lastPoint[dimension] = std::min(bbi1->GetMaximum()[dimension], bbi2->GetMaximum()[dimension]);
+    bbo->SetMaximum(lastPoint);
+    bbo->SetMinimum(firstPoint);
+  }
+  //--------------------------------------------------------------------
+
+
+  //--------------------------------------------------------------------
+  template<int Dimension>
   void ComputeBBUnion(typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbo, 
                       typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi1, 
                       typename itk::BoundingBox<unsigned long, Dimension>::Pointer bbi2) {
-- 
2.45.1