X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibmarklin%2Ftrack.cpp;h=3c2a410fa9d55bf2ab131985a76f7ea4266d4f1c;hb=c47f3fad07af11210c9cbd65d87964794189065e;hp=61f0d350e60f31e6af3ef0e432c23970dcaeece5;hpb=3e9c210ddc036cd015228504cc0803c909e27f84;p=r2c2.git

diff --git a/source/libmarklin/track.cpp b/source/libmarklin/track.cpp
index 61f0d35..3c2a410 100644
--- a/source/libmarklin/track.cpp
+++ b/source/libmarklin/track.cpp
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of the MSP Märklin suite
-Copyright © 2006-2008 Mikkosoft Productions, Mikko Rasa
+Copyright © 2006-2009 Mikkosoft Productions, Mikko Rasa
 Distributed under the GPL
 */
 
@@ -12,8 +12,6 @@ Distributed under the GPL
 using namespace std;
 using namespace Msp;
 
-#include <iostream>
-
 namespace Marklin {
 
 Track::Track(const TrackType &t):
@@ -33,38 +31,66 @@ Track::~Track()
 
 void Track::set_position(const Point &p)
 {
-	pos=p;
+	pos = p;
 }
 
 void Track::set_rotation(float r)
 {
-	rot=r;
+	rot = r;
 	while(rot<0)
-		rot+=M_PI*2;
+		rot += M_PI*2;
 	while(rot>M_PI*2)
-		rot-=M_PI*2;
+		rot -= M_PI*2;
 }
 
 void Track::set_slope(float s)
 {
 	if(links.size()!=2) return;
 
-	slope=s;
+	slope = s;
 }
 
 void Track::set_flex(bool f)
 {
-	flex=f;
+	flex = f;
+}
+
+void Track::check_slope()
+{
+	if(links.size()!=2)
+		return;
+
+	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;
+	}
+	else
+	{
+		slope = 0;
+		if(links[0])
+		{
+			Point epp = links[0]->get_endpoint_position(links[0]->get_endpoint_by_link(*this));
+			pos.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;
+		}
+	}
 }
 
 void Track::set_turnout_id(unsigned i)
 {
-	turnout_id=i;
+	turnout_id = i;
 }
 
 void Track::set_sensor_id(unsigned i)
 {
-	sensor_id=i;
+	sensor_id = i;
 }
 
 int Track::get_endpoint_by_link(const Track &other) const
@@ -78,61 +104,66 @@ int Track::get_endpoint_by_link(const Track &other) const
 
 Point Track::get_endpoint_position(unsigned epi) const
 {
-	const vector<Endpoint> &eps=type.get_endpoints();
+	const vector<Endpoint> &eps = type.get_endpoints();
 	if(epi>=eps.size())
 		throw InvalidParameterValue("Endpoint index out of range");
 
-	const Endpoint &ep=eps[epi];
+	const Endpoint &ep = eps[epi];
 
-	float c=cos(rot);
-	float s=sin(rot);
+	float c = cos(rot);
+	float s = sin(rot);
 
-	Point p(pos.x+c*ep.x-s*ep.y, pos.y+s*ep.x+c*ep.y, pos.z);
+	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;
+		p.z += slope;
 	return p;
 }
 
 float Track::get_endpoint_direction(unsigned epi) const
 {
-	const vector<Endpoint> &eps=type.get_endpoints();
+	const vector<Endpoint> &eps = type.get_endpoints();
 	if(epi>=eps.size())
 		throw InvalidParameterValue("Endpoint index out of range");
 
-	const Endpoint &ep=eps[epi];
+	const Endpoint &ep = eps[epi];
 
 	return rot+ep.dir;
 }
 
 bool Track::snap_to(Track &other, bool link)
 {
-	float limit=(link && !flex) ? 1e-6 : 1e-4;
-	const vector<Endpoint> &eps=type.get_endpoints();
-	const vector<Endpoint> &other_eps=other.get_type().get_endpoints();
+	float limit = (link && !flex) ? 1e-6 : 1e-4;
+	const vector<Endpoint> &eps = type.get_endpoints();
+	const vector<Endpoint> &other_eps = other.get_type().get_endpoints();
 
 	for(unsigned i=0; i<eps.size(); ++i)
 	{
-		Point epp=get_endpoint_position(i);
+		Point epp = get_endpoint_position(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;
+			Point epp2 = other.get_endpoint_position(j);
+			float dx = epp2.x-epp.x;
+			float dy = epp2.y-epp.y;
 			if(dx*dx+dy*dy<limit)
 			{
 				set_rotation(other.rot+other_eps[j].dir-eps[i].dir+M_PI);
-				set_position(Point(epp2.x-(eps[i].x*cos(rot)-eps[i].y*sin(rot)), epp2.y-(eps[i].y*cos(rot)+eps[i].x*sin(rot)), epp2.z));
+				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;
+					links[i] = &other;
+					other.links[j] = this;
 				}
 
 				return true;
@@ -145,17 +176,17 @@ bool Track::snap_to(Track &other, bool link)
 
 bool Track::snap(Point &pt, float &d) const
 {
-	const vector<Endpoint> &eps=type.get_endpoints();
+	const vector<Endpoint> &eps = type.get_endpoints();
 
 	for(unsigned i=0; i<eps.size(); ++i)
 	{
-		Point epp=get_endpoint_position(i);
-		float dx=pt.x-epp.x;
-		float dy=pt.y-epp.y;
+		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)
 		{
-			pt=epp;
-			d=rot+eps[i].dir;
+			pt = epp;
+			d = rot+eps[i].dir;
 			return true;
 		}
 	}
@@ -168,7 +199,7 @@ void Track::break_link(Track &trk)
 	for(vector<Track *>::iterator i=links.begin(); i!=links.end(); ++i)
 		if(*i==&trk)
 		{
-			*i=0;
+			*i = 0;
 			trk.break_link(*this);
 			return;
 		}
@@ -179,7 +210,7 @@ void Track::break_links()
 	for(vector<Track *>::iterator i=links.begin(); i!=links.end(); ++i)
 		if(Track *trk=*i)
 		{
-			*i=0;
+			*i = 0;
 			trk->break_link(*this);
 		}
 }
@@ -192,63 +223,110 @@ Track *Track::get_link(unsigned i) const
 	return links[i];
 }
 
-void Track::check_slope()
+unsigned Track::traverse(unsigned i, unsigned path) const
 {
-	if(links.size()!=2)
-		return;
+	const vector<Endpoint> &eps = type.get_endpoints();
+	if(i>=eps.size())
+		throw InvalidParameterValue("Endpoint index out of range");
 
-	if(links[0] && links[1])
+	const Endpoint &ep = eps[i];
+	
+	if(ep.paths&(1<<path))
 	{
-		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;
+		// Find the other endpoint for this path
+		for(unsigned j=0; j<eps.size(); ++j)
+			if((eps[j].paths&(1<<path)) && j!=i)
+				return j;
 	}
 	else
 	{
-		slope=0;
-		if(links[0])
-		{
-			Point epp=links[0]->get_endpoint_position(links[0]->get_endpoint_by_link(*this));
-			pos.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;
-		}
+		// Find an endpoint that's connected to this one and has the requested path
+		for(unsigned j=0; j<eps.size(); ++j)
+			if((eps[j].paths&(1<<path)) && (eps[j].paths&ep.paths))
+				return j;
 	}
+
+	throw Exception("Track endpoint did not have a counterpart");
 }
 
-int Track::traverse(unsigned i, unsigned route) const
+Point Track::get_point(unsigned epi, unsigned path, float d) const
 {
-	const vector<Endpoint> &eps=type.get_endpoints();
-	if(i>=eps.size())
+	const vector<Endpoint> &eps = type.get_endpoints();
+	if(epi>=eps.size())
 		throw InvalidParameterValue("Endpoint index out of range");
 
-	const Endpoint &ep=eps[i];
-	
-	if(ep.routes&(1<<route))
+	float x = eps[epi].pos.x;
+	float y = eps[epi].pos.y;
+	float z = 0;
+	float slope_norm = 0;
+	if(eps.size()==2)
 	{
-		// Find the other endpoint for this route
-		for(unsigned j=0; j<eps.size(); ++j)
-			if((eps[j].routes&(1<<route)) && j!=i)
-				return j;
+		slope_norm = slope/type.get_total_length();
+		if(epi==1)
+		{
+			z = slope;
+			slope_norm = -slope_norm;
+		}
 	}
-	else
+
+	const vector<TrackPart> &parts = type.get_parts();
+	const TrackPart *last_part = 0;
+	while(1)
 	{
-		// Find an endpoint that's connected to this one and has the requested route
-		for(unsigned j=0; j<eps.size(); ++j)
-			if((eps[j].routes&(1<<route)) && (eps[j].routes&ep.routes))
-				return j;
-	}
+		for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
+		{
+			if((eps[epi].paths&(1<<path)) && i->path!=path)
+				continue;
+			if(&*i==last_part)
+				continue;
 
-	return -1;
+			vector<Endpoint> part_eps;
+			i->collect_endpoints(part_eps);
+			for(unsigned j=0; j<part_eps.size(); ++j)
+			{
+				float dx = part_eps[j].pos.x-x;
+				float dy = part_eps[j].pos.y-y;
+				if(dx*dx+dy*dy<1e-6)
+				{
+					float plen = i->length;
+					if(i->radius)
+						plen *= abs(i->radius);
+					if(d<plen)
+					{
+						z += d*slope_norm;
+						if(j==1)
+							d = plen-d;
+						Point p = i->get_point(d);
+						float c = cos(rot);
+						float s = sin(rot);
+						return Point(pos.x+c*p.x-s*p.y, pos.y+c*p.y+s*p.x, pos.z+z);
+					}
+					else if(part_eps.size()>1)
+					{
+						d -= plen;
+						x = part_eps[1-j].pos.x;
+						y = part_eps[1-j].pos.y;
+						z += plen*slope_norm;
+						last_part = &*i;
+						i = parts.begin();
+						break;
+					}
+					else
+						return pos;
+				}
+			}
+		}
+
+		if(!last_part)
+			throw Exception("Internal error (Endpoint does not match any part)");
+		else
+			return pos;
+	}
 }
 
 Track *Track::copy() const
 {
-	Track *trk=new Track(type);
+	Track *trk = new Track(type);
 	trk->set_position(pos);
 	trk->set_rotation(rot);
 	trk->set_slope(slope);
@@ -257,24 +335,34 @@ Track *Track::copy() const
 	return trk;
 }
 
-/*******************
-** Track::Loader
-*/
+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("slope"), slope));
+	if(turnout_id)
+		st.push_back((DataFile::Statement("turnout_id"), turnout_id));
+	if(sensor_id)
+		st.push_back((DataFile::Statement("sensor_id"), sensor_id));
+	if(flex)
+		st.push_back((DataFile::Statement("flex"), true));
+}
+
 
 Track::Loader::Loader(Track &t):
-	track(t)
+	DataFile::BasicLoader<Track>(t)
 {
-	add("position",    &Loader::position);
-	add("rotation",    &Track::rot);
-	add("slope",       &Track::slope);
-	add("turnout_id",  &Track::turnout_id);
-	add("sensor_id",   &Track::sensor_id);
-	add("flex",        &Track::flex);
+	add("position",   &Loader::position);
+	add("rotation",   &Track::rot);
+	add("slope",      &Track::slope);
+	add("turnout_id", &Track::turnout_id);
+	add("sensor_id",  &Track::sensor_id);
+	add("flex",       &Track::flex);
 }
 
 void Track::Loader::position(float x, float y, float z)
 {
-	track.pos=Point(x, y, z);
+	obj.pos = Point(x, y, z);
 }
 
 } // namespace Marklin