From f818a60416d32dcced3d17d971c5fa959d4cecdc Mon Sep 17 00:00:00 2001
From: Han-Wen Nienhuys <hanwen@xs4all.nl>
Date: Sun, 25 Mar 2007 14:42:41 -0300
Subject: [PATCH] Add Skyline::print_points(), Offset::swapped()

---
 flower/include/offset.hh |  1 +
 flower/offset.cc         |  6 ++++++
 lily/include/skyline.hh  |  8 ++++++--
 lily/skyline.cc          | 16 +++++++++++++---
 4 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/flower/include/offset.hh b/flower/include/offset.hh
index a3093c98ef..80053a51b6 100644
--- a/flower/include/offset.hh
+++ b/flower/include/offset.hh
@@ -97,6 +97,7 @@ public:
     return *this;
   }
   Offset direction () const;
+  Offset swapped () const;
   
   Real arg () const;
   Real angle_degrees () const;
diff --git a/flower/offset.cc b/flower/offset.cc
index 8fc956c65e..294f69e6f8 100644
--- a/flower/offset.cc
+++ b/flower/offset.cc
@@ -105,3 +105,9 @@ Offset::direction () const
   d /= length (); 
   return d;
 }
+
+Offset
+Offset::swapped () const
+{
+  return Offset (coordinate_a_[Y_AXIS], coordinate_a_[X_AXIS]);
+}
diff --git a/lily/include/skyline.hh b/lily/include/skyline.hh
index 31747b1d43..5dadbacaf7 100644
--- a/lily/include/skyline.hh
+++ b/lily/include/skyline.hh
@@ -9,8 +9,7 @@
 #ifndef SKYLINE_HH
 #define SKYLINE_HH
 
-#include <list>
-
+#include "lily-proto.hh"
 #include "axis.hh"
 #include "box.hh"
 #include "interval.hh"
@@ -18,6 +17,8 @@
 #include "std-vector.hh"
 #include "smobs.hh"
 
+#include <list>
+
 struct Building
 {
   Real end_;
@@ -47,16 +48,19 @@ private:
   list<Building> internal_build_skyline (list<Box>*, Real, Axis, Direction);
 
   DECLARE_SIMPLE_SMOBS(Skyline);
+
 public:
   Skyline ();
   Skyline (Skyline const &src);
   Skyline (Direction sky);
   Skyline (vector<Box> const &bldgs, Real horizon_padding, Axis a, Direction sky);
   Skyline (Box const &b, Real horizon_padding, Axis a, Direction sky);
+  
   vector<Offset> to_points (Axis) const;
   void merge (Skyline const &);
   void insert (Box const &, Real horizon_padding, Axis);
   void print () const;
+  void print_points () const;
   void raise (Real);
   void shift (Real);
   Real distance (Skyline const &) const;
diff --git a/lily/skyline.cc b/lily/skyline.cc
index e55ba3a663..c935660c6e 100644
--- a/lily/skyline.cc
+++ b/lily/skyline.cc
@@ -59,6 +59,16 @@ Skyline::print () const
   print_buildings (buildings_);
 }
 
+void
+Skyline::print_points () const
+{
+  vector<Offset> ps (to_points (X_AXIS));
+
+  for (vsize i = 0; i < ps.size (); i++)
+    printf ("(%f,%f)%s" , ps[i][X_AXIS], ps[i][Y_AXIS],
+	    (i%2)==1 ? "\n" : " ");
+}
+
 Building::Building (Real start, Real start_height, Real end_height, Real end)
 {
   if (isinf (start) || isinf (end))
@@ -497,7 +507,7 @@ Skyline::set_minimum_height (Real h)
 
 
 vector<Offset>
-Skyline::to_points (Axis a) const
+Skyline::to_points (Axis horizon_axis) const
 {
   vector<Offset> out;
 
@@ -510,9 +520,9 @@ Skyline::to_points (Axis a) const
       start = i->end_;
     }
 
-  if (a == Y_AXIS)
+  if (horizon_axis == Y_AXIS)
     for (vsize i = 0; i < out.size (); i++)
-      out[i] = Offset (out[i][Y_AXIS], out[i][X_AXIS]);
+      out[i] = out[i].swapped ();
 
   return out;
 }
-- 
2.39.2