# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1519324583 -3600
# Node ID 4f661e2f7b6c68ecb6014c9f746e8caeb2376d19
# Parent  8d50e6be565d67b5ab1430c32e8dc1c5f5c947c0
cont

diff -r 8d50e6be565d -r 4f661e2f7b6c Framework/Toolbox/Extent2D.h
--- a/Framework/Toolbox/Extent2D.h	Thu Feb 15 13:51:29 2018 +0100
+++ b/Framework/Toolbox/Extent2D.h	Thu Feb 22 19:36:23 2018 +0100
@@ -81,5 +81,15 @@
     {
       return y2_ - y1_;
     }
+
+    double GetCenterX() const
+    {
+      return (x1_ + x2_) / 2.0;
+    }
+
+    double GetCenterY() const
+    {
+      return (y1_ + y2_) / 2.0;
+    }
   };
 }
diff -r 8d50e6be565d -r 4f661e2f7b6c Framework/Toolbox/LinearAlgebra.cpp
--- a/Framework/Toolbox/LinearAlgebra.cpp	Thu Feb 15 13:51:29 2018 +0100
+++ b/Framework/Toolbox/LinearAlgebra.cpp	Thu Feb 22 19:36:23 2018 +0100
@@ -667,7 +667,7 @@
     }
 
 
-    Matrix InvertScaleTranslationMatrix(const Matrix& t)
+    Matrix InvertScalingTranslationMatrix(const Matrix& t)
     {
       if (t.size1() != 4 ||
           t.size2() != 4 ||
diff -r 8d50e6be565d -r 4f661e2f7b6c Framework/Toolbox/LinearAlgebra.h
--- a/Framework/Toolbox/LinearAlgebra.h	Thu Feb 15 13:51:29 2018 +0100
+++ b/Framework/Toolbox/LinearAlgebra.h	Thu Feb 22 19:36:23 2018 +0100
@@ -184,6 +184,15 @@
     }
 
 
+    inline Vector Product(const Matrix& a,
+                          const Matrix& b,
+                          const Matrix& c,
+                          const Vector& d)
+    {
+      return Product(Product(a, b, c), d);
+    }
+
+
     double ComputeDeterminant(const Matrix& a);
 
     bool IsOrthogonalMatrix(const Matrix& q,
@@ -220,7 +229,7 @@
                                   const Vector& a,
                                   const Vector& b);
 
-    Matrix InvertScaleTranslationMatrix(const Matrix& t);
+    Matrix InvertScalingTranslationMatrix(const Matrix& t);
 
     bool IsShearMatrix(const Matrix& shear);