X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibr2c2%2Ftrack.cpp;h=7b9a4a2d70b30febaf96ebf917cb284153ba44ac;hb=0b75458245997b9df6da47cc4534341c8426084b;hp=b679af783867f72746793f205179f004a9e02baa;hpb=2910db1364914c0ab98a0f80250cc39137821577;p=r2c2.git

diff --git a/source/libr2c2/track.cpp b/source/libr2c2/track.cpp
index b679af7..7b9a4a2 100644
--- a/source/libr2c2/track.cpp
+++ b/source/libr2c2/track.cpp
@@ -100,8 +100,8 @@ void Track::check_slope()
 
 	if(links[0] && links[1])
 	{
-		Vector epp0 = links[0]->get_endpoint_position(links[0]->get_endpoint_by_link(*this));
-		Vector epp1 = links[1]->get_endpoint_position(links[1]->get_endpoint_by_link(*this));
+		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;
 	}
@@ -110,12 +110,12 @@ void Track::check_slope()
 		slope = 0;
 		if(links[0])
 		{
-			Vector epp = links[0]->get_endpoint_position(links[0]->get_endpoint_by_link(*this));
+			Vector epp = links[0]->get_snap_node(links[0]->get_link_slot(*this)).position;
 			position.z = epp.z;
 		}
 		else if(links[1])
 		{
-			Vector epp = links[1]->get_endpoint_position(links[1]->get_endpoint_by_link(*this));
+			Vector epp = links[1]->get_snap_node(links[1]->get_link_slot(*this)).position;
 			position.z = epp.z;
 		}
 	}
@@ -155,115 +155,82 @@ void Track::set_active_path(unsigned p)
 	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;
-}
-
-Vector 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 out_of_range("Track::get_endpoint_position");
-
-	const TrackType::Endpoint &ep = eps[epi];
-
+	TrackPoint p = type.get_point(epi, path, d);
 	float c = cos(rotation);
 	float s = sin(rotation);
 
-	Vector p(position.x+c*ep.pos.x-s*ep.pos.y, position.y+s*ep.pos.x+c*ep.pos.y, position.z);
-	if(eps.size()==2 && epi==1)
-		p.z += slope;
+	p.pos = Vector(position.x+c*p.pos.x-s*p.pos.y, position.y+s*p.pos.x+c*p.pos.y, position.z);
+	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;
+		}
+	}
+
 	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 out_of_range("Track::get_endpoint_direction");
-
-	const TrackType::Endpoint &ep = eps[epi];
-
-	return rotation+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)
-	{
-		Vector 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;
-
-			Vector 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.rotation+other_eps[j].dir-eps[i].dir+M_PI);
-					Vector p(epp2.x-(eps[i].pos.x*cos(rotation)-eps[i].pos.y*sin(rotation)),
-						epp2.y-(eps[i].pos.y*cos(rotation)+eps[i].pos.x*sin(rotation)),
-						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);
-				}
+	float c = cos(rotation);
+	float s = sin(rotation);
 
-				return true;
-			}
-		}
-	}
+	result.position = Vector(position.x+c*ep.pos.x-s*ep.pos.y, position.y+s*ep.pos.x+c*ep.pos.y, position.z);
+	if(eps.size()==2 && i==1)
+		result.position.z += slope;
 
-	return false;
+	result.rotation = rotation+ep.dir;
+
+	return result;
 }
 
-bool Track::snap(Vector &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)
 	{
-		Vector 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(sn.position.x-position.x, sn.position.y-position.y, sn.position.z-position.z);
+		float c = cos(rotation);
+		float s = sin(rotation);
+		local = Vector(c*local.x+s*local.y, c*local.y-s*local.x, local.z);
+
+		TrackPoint tp = type.get_nearest_point(local);
+		Vector d(local.x-tp.pos.x, local.y-tp.pos.y, local.z-tp.pos.z);
+		if(d.x*d.x+d.y*d.y+d.z*d.z<=limit*limit)
 		{
-			pt = epp;
-			d = rotation+eps[i].dir;
+			sn.position = Vector(position.x+tp.pos.x*c-tp.pos.y*s, position.y+tp.pos.y*c+tp.pos.x*s, position.z+tp.pos.z);
+			sn.rotation = tp.dir+rotation;
 			return true;
 		}
 	}
@@ -271,28 +238,17 @@ bool Track::snap(Vector &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
@@ -303,49 +259,74 @@ Track *Track::get_link(unsigned i) const
 	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(rotation);
-	float s = sin(rotation);
+	for(unsigned i=0; i<links.size(); ++i)
+		if(links[i]==&other)
+			return i;
 
-	p.pos = Vector(position.x+c*p.pos.x-s*p.pos.y, position.y+s*p.pos.x+c*p.pos.y, position.z);
-	p.dir += rotation;
-	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)
+		Snap sn = get_snap_node(i);
+		for(unsigned j=0; j<other_nsn; ++j)
 		{
-			p.pos.z += grade*d;
-			p.grade = grade;
-		}
-		else
-		{
-			p.pos.z += slope-grade*d;
-			p.grade = -grade;
+			Snap osn = other.get_snap_node(j);
+			Vector d(osn.position.x-sn.position.x, osn.position.y-sn.position.y, osn.position.z-sn.position.z);
+			float da = osn.rotation-sn.rotation-M_PI;
+			while(da<-M_PI)
+				da += M_PI*2;
+			while(da>M_PI)
+				da -= M_PI*2;
+
+			if(d.x*d.x+d.y*d.y<limit && d.z*d.z<limit && da>-0.01 && da<0.01)
+			{
+				break_link(i);
+				links[i] = otrack;
+				otrack->links[j] = this;
+				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");
 
-TrackPoint Track::get_nearest_point(const Vector &p) const
-{
-	Vector local(p.x-position.x, p.y-position.y, p.z-position.z);
-	float c = cos(rotation);
-	float s = sin(rotation);
-	local = Vector(c*local.x+s*local.y, c*local.y-s*local.x, local.z);
+	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);
 
-	TrackPoint tp = type.get_nearest_point(local);
-	tp.pos = Vector(position.x+tp.pos.x*c-tp.pos.y*s, position.y+tp.pos.y*c+tp.pos.x*s, position.z+tp.pos.z);
-	tp.dir += rotation;
-	return tp;
+	return true;
 }
 
 bool Track::collide_ray(const Vector &start, const Vector &ray) const