1st revision

.gitattributes

@@ -419,6 +419,7 @@ Developers_manual/doc_tex/Developers_manual/fig/reference_counting.pdf -text svn
 Developers_manual/doc_tex/Developers_manual/fig/use_real.eps -text svneol=unset#application/postscript
 Developers_manual/doc_tex/Developers_manual/fig/use_real.gif -text svneol=unset#image/gif
 Developers_manual/doc_tex/Developers_manual/fig/use_real.pdf -text svneol=unset#application/pdf
+Envelope_2/examples/Envelope_2/example1.C -text
 Generator/demo/Generator/help/index.html svneol=native#text/html
 Generator/doc_tex/Generator/Segment_generator_prog1.gif -text svneol=unset#image/gif
 Generator/doc_tex/Generator/Segment_generator_prog1.pdf -text svneol=unset#application/pdf

Envelope_2/examples/Envelope_2/example1.C

@@ -0,0 +1,85 @@
+#include <CGAL/Envelope_2.h>
+
+#include <iostream>
+#include <CGAL/enum.h>
+#include <CGAL/Gmpq.h>
+#include <CGAL/Quotient.h>
+#include <CGAL/MP_Float.h>
+#include <CGAL/Cartesian.h>
+
+#include <CGAL/Arr_segment_traits_2.h>
+
+#include <vector>
+
+
+//typedef CGAL::Gmpq                                      NT;
+typedef CGAL::Quotient<CGAL::MP_Float>                  NT;
+typedef CGAL::Cartesian<NT>                             Kernel;
+typedef CGAL::Arr_segment_traits_2<Kernel>              Traits_2;
+
+typedef Traits_2::Point_2                               Point_2;
+typedef Traits_2::Curve_2                               Curve_2;
+typedef Traits_2::X_monotone_curve_2                    X_monotone_curve_2;
+
+typedef CGAL::Envelope_2<Traits_2>                      Env_2;
+
+typedef std::vector<Curve_2>                            CurveVector;
+
+
+
+int main(int argc,char **argv)
+{
+  if (argc<2)
+  {
+    std::cerr<< "Missing file name\n";
+    return -1;
+  }
+  std::ifstream in_file(argv[1]);
+  if (!in_file.is_open()) {
+    std::cerr << "Cannot open file: " << argv[1] << "!" << std::endl;
+    return -1;
+  }
+
+  CurveVector curves;
+  int num_of_curves;
+
+  in_file >> num_of_curves;
+  curves.resize(num_of_curves);
+  for(int i = 0 ; i < num_of_curves ; i++)
+  {
+    NT x1 , y1 , x2 , y2;
+#ifdef MACHINE_NATIVE
+			read_native(in_file, x1);	
+			read_native(in_file, y1);
+			read_native(in_file, x2);
+			read_native(in_file, y2);
+#else
+    in_file >> x1 >> y1 >> x2 >> y2;
+#endif
+    
+    curves[i] = Curve_2(Point_2(x1,y1), Point_2(x2,y2));
+  }
+  
+
+  Env_2 env;
+  
+  env.insert (curves.begin(), curves.end(), Env_2::LOWER);
+  Env_2::Vertex_iterator vi = env.begin();
+  Env_2::Vertex_iterator vi_end = env.end();
+  
+
+  while (vi != vi_end)
+  {
+    std::cout<<"( " <<*vi<<" )" << " => ";
+    if(vi.right() == NULL)
+      std::cout<<"NULL => ";
+    else
+      std::cout<<(*(vi.right()))<<" => ";
+    ++vi;
+  }
+  std::cout<<"\n";
+
+
+  return 0;
+}
+