From 5076c0631dda658fd032410b2e009520eb08b31c Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 9 Aug 2013 19:39:05 +0300
Subject: [PATCH] Add a utility class to display a TrackChain as a path

---
 source/3d/trackchain.cpp | 62 ++++++++++++++++++++++++++++++++++++++++
 source/3d/trackchain.h   | 37 ++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 source/3d/trackchain.cpp
 create mode 100644 source/3d/trackchain.h

diff --git a/source/3d/trackchain.cpp b/source/3d/trackchain.cpp
new file mode 100644
index 0000000..3d972d1
--- /dev/null
+++ b/source/3d/trackchain.cpp
@@ -0,0 +1,62 @@
+#include "layout.h"
+#include "path.h"
+#include "trackchain.h"
+#include "track.h"
+
+using namespace Msp;
+
+namespace R2C2 {
+
+TrackChain3D::TrackChain3D(Layout3D &l, TrackChain &r):
+	layout(l),
+	chain(r),
+	layer(0)
+{
+	chain.signal_track_added.connect(sigc::mem_fun(this, &TrackChain3D::track_added));
+	chain.signal_track_removed.connect(sigc::mem_fun(this, &TrackChain3D::track_removed));
+
+	const TrackChain::TrackSet &tracks = chain.get_tracks();
+	for(TrackChain::TrackSet::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
+		track_added(**i);
+}
+
+TrackChain3D::~TrackChain3D()
+{
+	for(PathMap::iterator i=paths.begin(); i!=paths.end(); ++i)
+		delete i->second;
+}
+
+void TrackChain3D::set_color(const GL::Color &c)
+{
+	color = c;
+	for(PathMap::iterator i=paths.begin(); i!=paths.end(); ++i)
+		i->second->set_color(color);
+}
+
+void TrackChain3D::set_layer(float l)
+{
+	layer = l;
+	for(PathMap::iterator i=paths.begin(); i!=paths.end(); ++i)
+		i->second->set_layer(layer);
+}
+
+void TrackChain3D::track_added(Track &track)
+{
+	Track3D &track_3d = layout.get<Track3D>(track);
+	Path3D *path = new Path3D(track_3d);
+	paths.insert(PathMap::value_type(&track, path));
+	path->set_color(color);
+	path->set_layer(layer);
+}
+
+void TrackChain3D::track_removed(Track &track)
+{
+	PathMap::iterator i = paths.find(&track);
+	if(i!=paths.end())
+	{
+		delete i->second;
+		paths.erase(i);
+	}
+}
+
+} // namespace R2C2
diff --git a/source/3d/trackchain.h b/source/3d/trackchain.h
new file mode 100644
index 0000000..1610c7d
--- /dev/null
+++ b/source/3d/trackchain.h
@@ -0,0 +1,37 @@
+#ifndef R2C2_3D_TRACKCHAIN_H_
+#define R2C2_3D_TRACKCHAIN_H_
+
+#include <msp/gl/color.h>
+#include "libr2c2/trackchain.h"
+
+namespace R2C2 {
+
+class Layout3D;
+class Path3D;
+
+class TrackChain3D: public sigc::trackable
+{
+protected:
+	typedef std::map<Track *, Path3D *> PathMap;
+
+	Layout3D &layout;
+	TrackChain &chain;
+	PathMap paths;
+	Msp::GL::Color color;
+	float layer;
+
+public:
+	TrackChain3D(Layout3D &, TrackChain &);
+	~TrackChain3D();
+
+	void set_color(const Msp::GL::Color &);
+	void set_layer(float);
+
+protected:
+	void track_added(Track &);
+	void track_removed(Track &);
+};
+
+} // namespace R2C2
+
+#endif
-- 
2.43.0