added link to the functor example in the manual

+ cosmetic changes in the examples

Circular_kernel_3/doc_tex/Circular_kernel_3/CK.tex

@@ -69,11 +69,16 @@ In fact, the spherical kernel is documented as a concept,
 \item {} and a predefined kernel \ccc{Exact_spherical_kernel_3}.
 \end{itemize}
 
-\section{Example}
+\section{Examples}
 
-This example shows how to construct spheres and compute intersections on them.
+The first example shows how to construct spheres and compute
+intersections on them using the global function.
 
-\ccIncludeExampleCode{Circular_kernel_3/spherical_kernel_3.cpp}
+\ccIncludeExampleCode{Circular_kernel_3/intersecting_spheres.cpp}
+
+The second example illustrates the use of a functor. 
+
+\ccIncludeExampleCode{Circular_kernel_3/functor_has_on.cpp}
 
 \section{Design and Implementation History}
 

Circular_kernel_3/examples/Circular_kernel_3/functor_has_on.cpp

@@ -1,40 +1,31 @@
-#include <CGAL/MP_Float.h>
-#include <CGAL/Quotient.h>
-
-#include <CGAL/Cartesian.h>
-#include <CGAL/Algebraic_kernel_for_spheres_2_3.h>
-
-#include <CGAL/Spherical_kernel_3.h>
-
+#include <CGAL/Exact_spherical_kernel_3.h>
 #include <CGAL/Random.h>
 
-typedef CGAL::Quotient<CGAL::MP_Float>                  NT;
-typedef CGAL::Cartesian<NT>                             Linear_k;
-typedef CGAL::Algebraic_kernel_for_spheres_2_3<NT>      Algebraic_k;
-typedef CGAL::Spherical_kernel_3<Linear_k, Algebraic_k> Spherical_k;
+typedef CGAL::Exact_spherical_kernel_3         Spherical_k;
 
-typedef CGAL::Point_3<Spherical_k>                      Point_3;
-typedef CGAL::Circular_arc_3<Spherical_k>               Circular_arc_3;
+typedef CGAL::Point_3<Spherical_k>             Point_3;
+typedef CGAL::Circular_arc_3<Spherical_k>      Circular_arc_3;
 
 int main()
 {
-	int n = 0;
-	Circular_arc_3 c = Circular_arc_3(Point_3(10,10,0), Point_3(5,5,5), Point_3(0, 0, 0));
-	for(int i = 0; i <= 10; i++) {
-		for(int j = 0; j <= 10; j++) {
-			for(int k = 0; k <= 10; k++) {
-			  Point_3 p = Point_3(i, j, k);
-			  if(Spherical_k().has_on_3_object()(c,p)) {
-				  n++;
-				  std::cout << "(" << i << "," << j << "," << k << ")" << std::endl;
-			  }
-		  }
-		}
+  int n = 0;
+  Circular_arc_3 c = Circular_arc_3(Point_3(10,10,0), Point_3(5,5,5), Point_3(0, 0, 0));
+  for(int i = 0; i <= 10; i++) {
+    for(int j = 0; j <= 10; j++) {
+      for(int k = 0; k <= 10; k++) {
+	Point_3 p = Point_3(i, j, k);
+	if(Spherical_k().has_on_3_object()(c,p)) {
+	  n++;
+	  std::cout << "(" << i << "," << j << "," << k << ")" << std::endl;
 	}
-	std::cout << "There are " << n << " points in the " <<
-	"[0,..,10]x[0,..,10]x[0,...,10] " <<
-	"grid on the circular" << std::endl	<< 
-	" arc defined by the points (10,10,0), (5,5,5), (0,0,0)" << 
-	std::endl << "See the points above." << std::endl;
+      }
+    }
+  }
+
+  std::cout << "There are " << n << " points in the " 
+	    << "[0,..,10]x[0,..,10]x[0,...,10] " 
+	    << "grid on the circular" << std::endl
+	    << " arc defined by the points (10,10,0), (5,5,5), (0,0,0)" 
+	    << std::endl << "See the points above." << std::endl;
   return 0;
 };