X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibr2c2%2Ftrack.cpp;h=ecb86bbad33ad02e20699a05ef7655eb3d2d30a0;hb=2922bc5d2ba68979d186fd09df8b4ec6ba98402b;hp=c6c1751d7b2388cdadeb78e9824a1fcb6fb544b5;hpb=949b13aae247fa53579ec1cda9142ccc8755acde;p=r2c2.git

diff --git a/source/libr2c2/track.cpp b/source/libr2c2/track.cpp
index c6c1751..ecb86bb 100644
--- a/source/libr2c2/track.cpp
+++ b/source/libr2c2/track.cpp
@@ -1,10 +1,3 @@
-/* $Id$
-
-This file is part of R²C²
-Copyright © 2006-2010  Mikkosoft Productions, Mikko Rasa
-Distributed under the GPL
-*/
-
 #include <cmath>
 #include "block.h"
 #include "catalogue.h"
@@ -19,21 +12,21 @@ using namespace Msp;
 namespace R2C2 {
 
 Track::Track(Layout &l, const TrackType &t):
-	layout(l),
+	Object(l),
 	type(t),
 	block(0),
-	rot(0),
 	slope(0),
 	flex(false),
 	turnout_id(0),
 	sensor_id(0),
 	links(type.get_endpoints().size()),
-	active_path(0)
+	active_path(0),
+	path_changing(false)
 {
 	if(type.is_turnout())
 		turnout_id = layout.allocate_turnout_id();
 
-	layout.add_track(*this);
+	layout.add(*this);
 
 	if(layout.has_driver())
 		layout.get_driver().signal_turnout.connect(sigc::mem_fun(this, &Track::turnout_event));
@@ -44,15 +37,23 @@ Track::Track(Layout &l, const TrackType &t):
 Track::~Track()
 {
 	break_links();
-	layout.remove_track(*this);
+	layout.remove(*this);
+}
+
+Track *Track::clone(Layout *to_layout) const
+{
+	Track *track = new Track((to_layout ? *to_layout : layout), type);
+	track->set_position(position);
+	track->set_rotation(rotation);
+	return track;
 }
 
 void Track::set_block(Block *b)
 {
 	if(b && !b->has_track(*this))
-		throw InvalidParameterValue("Track is not in the Block");
+		throw logic_error("track not in block");
 	if(!b && block && block->has_track(*this))
-		throw InvalidState("Track is still in a Block");
+		throw logic_error("track still in block");
 
 	block = b;
 }
@@ -60,23 +61,22 @@ void Track::set_block(Block *b)
 Block &Track::get_block() const
 {
 	if(!block)
-		throw InvalidState("No Block");
+		throw logic_error("!block");
 
 	return *block;
 }
 
-void Track::set_position(const Point &p)
+void Track::set_position(const Vector &p)
 {
-	pos = p;
+	position = p;
+	for(vector<Track *>::const_iterator i=links.begin(); i!=links.end(); ++i)
+		if(*i)
+			(*i)->check_slope();
 }
 
-void Track::set_rotation(float r)
+void Track::set_rotation(const Angle &r)
 {
-	rot = r;
-	while(rot<0)
-		rot += M_PI*2;
-	while(rot>M_PI*2)
-		rot -= M_PI*2;
+	rotation = wrap_positive(r);
 }
 
 void Track::set_slope(float s)
@@ -99,23 +99,22 @@ void Track::check_slope()
 
 	if(links[0] && links[1])
 	{
-		Point epp0 = links[0]->get_endpoint_position(links[0]->get_endpoint_by_link(*this));
-		Point epp1 = links[1]->get_endpoint_position(links[1]->get_endpoint_by_link(*this));
-		pos.z = epp0.z;
-		slope = epp1.z-pos.z;
+		Vector epp0 = links[0]->get_snap_node(links[0]->get_link_slot(*this)).position;
+		Vector epp1 = links[1]->get_snap_node(links[1]->get_link_slot(*this)).position;
+		position.z = epp0.z;
+		slope = epp1.z-position.z;
 	}
 	else
 	{
-		slope = 0;
 		if(links[0])
 		{
-			Point epp = links[0]->get_endpoint_position(links[0]->get_endpoint_by_link(*this));
-			pos.z = epp.z;
+			Vector epp = links[0]->get_snap_node(links[0]->get_link_slot(*this)).position;
+			position.z = epp.z;
 		}
 		else if(links[1])
 		{
-			Point epp = links[1]->get_endpoint_position(links[1]->get_endpoint_by_link(*this));
-			pos.z = epp.z;
+			Vector epp = links[1]->get_snap_node(links[1]->get_link_slot(*this)).position;
+			position.z = epp.z-slope;
 		}
 	}
 }
@@ -123,7 +122,9 @@ void Track::check_slope()
 void Track::set_turnout_id(unsigned i)
 {
 	if(!type.is_turnout())
-		throw InvalidState("Not a turnout");
+		throw logic_error("not a turnout");
+	if(!i)
+		throw invalid_argument("Track::set_turnout_id");
 
 	turnout_id = i;
 	layout.create_blocks(*this);
@@ -135,7 +136,7 @@ void Track::set_turnout_id(unsigned i)
 void Track::set_sensor_id(unsigned i)
 {
 	if(type.is_turnout())
-		throw InvalidState("Can't set sensor on a turnout");
+		throw logic_error("is a turnout");
 
 	sensor_id = i;
 	layout.create_blocks(*this);
@@ -146,122 +147,82 @@ void Track::set_sensor_id(unsigned i)
 void Track::set_active_path(unsigned p)
 {
 	if(!turnout_id)
-		throw InvalidState("Not a turnout");
+		throw logic_error("not a turnout");
 	if(!(type.get_paths()&(1<<p)))
-		throw InvalidParameterValue("Invalid path");
+		throw invalid_argument("Track::set_active_path");
 
+	path_changing = true;
 	layout.get_driver().set_turnout(turnout_id, p);
 }
 
-int Track::get_endpoint_by_link(Track &other) const
-{
-	for(unsigned i=0; i<links.size(); ++i)
-		if(links[i]==&other)
-			return i;
-
-	return -1;
-}
-
-Point Track::get_endpoint_position(unsigned epi) const
+TrackPoint Track::get_point(unsigned epi, unsigned path, float d) const
 {
-	const vector<TrackType::Endpoint> &eps = type.get_endpoints();
-	if(epi>=eps.size())
-		throw InvalidParameterValue("TrackType::Endpoint index out of range");
-
-	const TrackType::Endpoint &ep = eps[epi];
+	TrackPoint p = type.get_point(epi, path, d);
 
-	float c = cos(rot);
-	float s = sin(rot);
+	p.pos = position+rotated_vector(p.pos, rotation);
+	p.dir += rotation;
+	if(type.get_endpoints().size()==2)
+	{
+		float len = type.get_path_length(path);
+		float grade = slope/len;
+		if(epi==0)
+		{
+			p.pos.z += grade*d;
+			p.grade = grade;
+		}
+		else
+		{
+			p.pos.z += slope-grade*d;
+			p.grade = -grade;
+		}
+	}
 
-	Point p(pos.x+c*ep.pos.x-s*ep.pos.y, pos.y+s*ep.pos.x+c*ep.pos.y, pos.z);
-	if(eps.size()==2 && epi==1)
-		p.z += slope;
 	return p;
 }
 
-float Track::get_endpoint_direction(unsigned epi) const
+TrackPoint Track::get_point(unsigned epi, float d) const
 {
-	const vector<TrackType::Endpoint> &eps = type.get_endpoints();
-	if(epi>=eps.size())
-		throw InvalidParameterValue("TrackType::Endpoint index out of range");
-
-	const TrackType::Endpoint &ep = eps[epi];
-
-	return rot+ep.dir;
+	return get_point(epi, active_path, d);
 }
 
-bool Track::snap_to(Track &other, bool link, float limit)
+unsigned Track::get_n_snap_nodes() const
 {
-	if(!limit || link)
-	{
-		limit = layout.get_catalogue().get_gauge();
-		if(link && !flex && !other.get_flex())
-			limit /= 10;
-	}
-	limit *= limit;
+	return type.get_endpoints().size();
+}
 
+Snap Track::get_snap_node(unsigned i) const
+{
 	const vector<TrackType::Endpoint> &eps = type.get_endpoints();
-	const vector<TrackType::Endpoint> &other_eps = other.get_type().get_endpoints();
+	if(i>=eps.size())
+		throw out_of_range("Track::get_snap_node");
 
-	for(unsigned i=0; i<eps.size(); ++i)
-	{
-		Point epp = get_endpoint_position(i);
+	Snap result;
+	const TrackType::Endpoint &ep = eps[i];
 
-		for(unsigned j=0; j<other_eps.size(); ++j)
-		{
-			if(other.get_link(j))
-				continue;
-
-			Point epp2 = other.get_endpoint_position(j);
-			float dx = epp2.x-epp.x;
-			float dy = epp2.y-epp.y;
-			float dz = epp2.z-epp.z;
-			if(dx*dx+dy*dy<limit && dz*dz<limit)
-			{
-				if(!link || (!flex && !other.get_flex()))
-				{
-					set_rotation(other.rot+other_eps[j].dir-eps[i].dir+M_PI);
-					Point p(epp2.x-(eps[i].pos.x*cos(rot)-eps[i].pos.y*sin(rot)),
-						epp2.y-(eps[i].pos.y*cos(rot)+eps[i].pos.x*sin(rot)),
-						epp2.z);
-					if(eps.size()==2 && i==1)
-						p.z -= slope;
-					set_position(p);
-				}
-
-				if(link)
-				{
-					if(links[i])
-						break_link(*links[i]);
-					links[i] = &other;
-					other.links[j] = this;
-					layout.create_blocks(*this);
-
-					signal_link_changed.emit(i, &other);
-					other.signal_link_changed.emit(j, this);
-				}
+	result.position = position+rotated_vector(ep.pos, rotation);
+	if(eps.size()==2 && i==1)
+		result.position.z += slope;
 
-				return true;
-			}
-		}
-	}
+	result.rotation = rotation+ep.dir;
 
-	return false;
+	return result;
 }
 
-bool Track::snap(Point &pt, float &d) const
+bool Track::snap(Snap &sn, float limit, SnapType what) const
 {
-	const vector<TrackType::Endpoint> &eps = type.get_endpoints();
+	if(Object::snap(sn, limit, what))
+		return true;
 
-	for(unsigned i=0; i<eps.size(); ++i)
+	if(what&SNAP_SEGMENT)
 	{
-		Point epp = get_endpoint_position(i);
-		float dx = pt.x-epp.x;
-		float dy = pt.y-epp.y;
-		if(dx*dx+dy*dy<1e-4)
+		Vector local = rotated_vector(sn.position-position, -rotation);
+
+		TrackPoint tp = type.get_nearest_point(local);
+		Vector span = local-tp.pos;
+		if(dot(span, span)<=limit*limit)
 		{
-			pt = epp;
-			d = rot+eps[i].dir;
+			sn.position = position+rotated_vector(tp.pos, rotation);
+			sn.rotation = tp.dir+rotation;
 			return true;
 		}
 	}
@@ -269,74 +230,98 @@ bool Track::snap(Point &pt, float &d) const
 	return false;
 }
 
-void Track::break_link(Track &trk)
+SnapType Track::get_default_snap_type_to(const Object &other) const
 {
-	for(vector<Track *>::iterator i=links.begin(); i!=links.end(); ++i)
-		if(*i==&trk)
-		{
-			*i = 0;
-			trk.break_link(*this);
-			// XXX Creates the blocks twice
-			layout.create_blocks(*this);
-			signal_link_changed.emit(i-links.begin(), 0);
-			return;
-		}
+	if(dynamic_cast<const Track *>(&other))
+		return SNAP_NODE;
+
+	return NO_SNAP;
 }
 
-void Track::break_links()
+unsigned Track::get_n_link_slots() const
 {
-	for(vector<Track *>::iterator i=links.begin(); i!=links.end(); ++i)
-		if(Track *trk=*i)
-		{
-			*i = 0;
-			trk->break_link(*this);
-		}
+	return links.size();
 }
 
 Track *Track::get_link(unsigned i) const
 {
-	if(i>links.size())
-		throw InvalidParameterValue("Link index out of range");
+	if(i>=links.size())
+		throw out_of_range("Track::get_link");
 
 	return links[i];
 }
 
-TrackPoint Track::get_point(unsigned epi, unsigned path, float d) const
+int Track::get_link_slot(const Object &other) const
 {
-	TrackPoint p = type.get_point(epi, path, d);
-	float c = cos(rot);
-	float s = sin(rot);
+	for(unsigned i=0; i<links.size(); ++i)
+		if(links[i]==&other)
+			return i;
 
-	p.pos = Point(pos.x+c*p.pos.x-s*p.pos.y, pos.y+s*p.pos.x+c*p.pos.y, pos.z);
-	p.dir += rot;
-	if(type.get_endpoints().size()==2)
+	return -1;
+}
+
+bool Track::link_to(Object &other)
+{
+	Track *otrack = dynamic_cast<Track *>(&other);
+	if(!otrack)
+		return false;
+
+	float limit = layout.get_catalogue().get_gauge();
+	if(!flex && !otrack->get_flex())
+		limit /= 10;
+	limit *= limit;
+
+	unsigned nsn = get_n_snap_nodes();
+	unsigned other_nsn = other.get_n_snap_nodes();
+	for(unsigned i=0; i<nsn; ++i)
 	{
-		float len = type.get_path_length(path);
-		float grade = slope/len;
-		if(epi==0)
-		{
-			p.pos.z += grade*d;
-			p.grade = grade;
-		}
-		else
+		Snap sn = get_snap_node(i);
+		for(unsigned j=0; j<other_nsn; ++j)
 		{
-			p.pos.z += slope-grade*d;
-			p.grade = -grade;
+			Snap osn = other.get_snap_node(j);
+			Vector span = osn.position-sn.position;
+			Angle da = wrap_balanced(osn.rotation-sn.rotation-Angle::half_turn());
+
+			if(dot(span, span)<limit && abs(da).radians()<0.01)
+			{
+				break_link(i);
+				links[i] = otrack;
+				otrack->links[j] = this;
+				check_slope();
+				layout.create_blocks(*this);
+
+				signal_link_changed.emit(i, otrack);
+				otrack->signal_link_changed.emit(j, this);
+				return true;
+			}
 		}
 	}
 
-	return p;
+	return false;
 }
 
-TrackPoint Track::get_point(unsigned epi, float d) const
+bool Track::break_link(unsigned i)
 {
-	return get_point(epi, active_path, d);
+	if(i>=links.size())
+		throw out_of_range("Track::break_link");
+
+	Track *other = links[i];
+	if(!other)
+		return false;
+
+	links[i] = 0;
+	other->break_link(*this);
+	// XXX Creates the blocks twice, because the other track calls this too
+	layout.create_blocks(*this);
+	signal_link_changed.emit(i, 0);
+
+	return true;
 }
 
 void Track::save(list<DataFile::Statement> &st) const
 {
-	st.push_back((DataFile::Statement("position"), pos.x, pos.y, pos.z));
-	st.push_back((DataFile::Statement("rotation"), rot));
+	st.push_back((DataFile::Statement("position"), position.x, position.y, position.z));
+	st.push_back((DataFile::Statement("rotation"), rotation.radians()));
 	st.push_back((DataFile::Statement("slope"), slope));
 	if(turnout_id)
 		st.push_back((DataFile::Statement("turnout_id"), turnout_id));
@@ -354,16 +339,17 @@ void Track::turnout_event(unsigned addr, unsigned state)
 	if(addr==turnout_id)
 	{
 		active_path = state;
+		path_changing = false;
 		signal_path_changed.emit(active_path);
 	}
 }
 
 
 Track::Loader::Loader(Track &t):
-	DataFile::BasicLoader<Track>(t)
+	DataFile::ObjectLoader<Track>(t)
 {
 	add("position",   &Loader::position);
-	add("rotation",   &Track::rot);
+	add("rotation",   &Loader::rotation);
 	add("slope",      &Track::slope);
 	add("turnout_id", &Loader::turnout_id);
 	add("sensor_id",  &Loader::sensor_id);
@@ -372,7 +358,12 @@ Track::Loader::Loader(Track &t):
 
 void Track::Loader::position(float x, float y, float z)
 {
-	obj.pos = Point(x, y, z);
+	obj.position = Vector(x, y, z);
+}
+
+void Track::Loader::rotation(float r)
+{
+	obj.rotation = Angle::from_radians(r);
 }
 
 void Track::Loader::sensor_id(unsigned id)