added generator for random sites in the box [0,1]x[0,1]

Apollonius_graph_2/generators/gen_sites_in_0x1_box.cpp

@@ -0,0 +1,52 @@
+#include <CGAL/basic.h>
+#include <CGAL/Apollonius_graph_2/random_sites_in_0x1_box.h>
+
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+
+#include <CGAL/Simple_cartesian.h>
+#include <CGAL/Apollonius_site_2.h>
+
+typedef CGAL::Simple_cartesian<double> K;
+typedef CGAL::Apollonius_site_2<K>   Site_2;
+
+int usage (int argc, char **argv)
+{
+    std::cerr << "usage: " << argv[0]
+	      << " <number of points> <max radius> [seed]" << std::endl;
+    return 2;
+}
+
+
+int main (int argc, char **argv)
+{
+    int num, seed = 42;
+    double rmax;
+
+    if (argc < 2)
+        return usage (argc, argv);
+
+    {
+      std::istringstream is (argv[1]);
+      if (! (is >> num)) return usage (argc, argv);
+    }
+    {
+      std::istringstream is (argv[2]);
+      if (! (is >> rmax)) return usage (argc, argv);
+    }
+    if (argc > 3) {
+      std::istringstream is (argv[3]);
+      if (! (is >> seed)) return usage (argc, argv);
+    }
+
+    CGAL::Random_sites_in_0x1_box<Site_2> g(rmax, seed);
+
+    std::cout << std::setprecision(17);
+
+    for (int i = 0; i < num; ++i) {
+      std::cout << *g << std::endl;
+    }
+
+    return 0;
+}

Apollonius_graph_2/generators/include/CGAL/Apollonius_graph_2/random_sites_in_0x1_box.h

@@ -0,0 +1,37 @@
+#ifndef CGAL_APOLLONIUS_GRAPH_2_RANDOM_SITES_IN_0X1_BOX_H
+#define CGAL_APOLLONIUS_GRAPH_2_RANDOM_SITES_IN_0X1_BOX_H 1
+
+#include <CGAL/basic.h>
+#include <CGAL/Random.h>
+
+CGAL_BEGIN_NAMESPACE
+
+template<class Site>
+class Random_sites_in_0x1_box
+{
+public:
+  typedef Site    Site_2;
+  typedef Site_2  result_type;
+
+private:
+  typedef typename Site_2::Point_2  Point_2;
+  
+public:
+  Random_sites_in_0x1_box(double rmax = 0.125, int seed = 0)
+    : rmax_(rmax), random_(seed)  {}
+
+  Site_2 operator*() {
+    double x = random_.get_double(0, 1);
+    double y = random_.get_double(0, 1);
+    double w = random_.get_double(0, rmax_);
+    return Site_2(Point_2(x,y),w);
+  }
+
+private:
+  double rmax_;
+  Random random_;
+};
+
+CGAL_END_NAMESPACE
+
+#endif // CGAL_APOLLONIUS_GRAPH_2_RANDOM_SITES_IN_0X1_BOX_H