X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fdesigner%2Fslopetool.cpp;h=ef96e558d08f697dd9219c99629b2779583b517a;hb=92c6b7a632cb6f380802114abcb4739fd0029261;hp=0f6990eeec50abda37799186b19d1dcae8c57c31;hpb=6b9b841c497de4b783178ec8c5b98da49b6b8df5;p=r2c2.git

diff --git a/source/designer/slopetool.cpp b/source/designer/slopetool.cpp
index 0f6990e..ef96e55 100644
--- a/source/designer/slopetool.cpp
+++ b/source/designer/slopetool.cpp
@@ -5,14 +5,22 @@ using namespace std;
 using namespace Msp;
 using namespace R2C2;
 
-SlopeTool::SlopeTool(Designer &d, Input::Mouse &m, const set<Object *> &objects):
-	Tool(d, m),
+SlopeTool::SlopeTool(Designer &d, Input::Keyboard &k, Input::Mouse &m, const set<Object *> &objects):
+	Tool(d, k, m),
 	total_length(0)
 {
+	if(objects.empty())
+	{
+		set_status("Nothing selected");
+		set_done(false);
+		return;
+	}
+
 	for(set<Object *>::const_iterator i=objects.begin(); i!=objects.end(); ++i)
 		if(!dynamic_cast<Track *>(*i) || (*i)->get_n_link_slots()!=2)
 		{
 			set_status("Must have linear tracks only");
+			set_done(false);
 			return;
 		}
 
@@ -37,6 +45,9 @@ SlopeTool::SlopeTool(Designer &d, Input::Mouse &m, const set<Object *> &objects)
 
 void SlopeTool::even_slope(bool smooth)
 {
+	if(done)
+		return;
+
 	float start_z = tracks.front()->get_snap_node(tracks.front().entry()).position.z;
 	float end_z = tracks.back()->get_snap_node(tracks.back().reverse().entry()).position.z;
 
@@ -69,10 +80,15 @@ void SlopeTool::even_slope(bool smooth)
 		set_slope(*i, cur_z, tilt);
 		cur_z += (*i)->get_type().get_path_length(0)*(end_z-start_z)/length;
 	}
+
+	set_done(true);
 }
 
 void SlopeTool::flatten()
 {
+	if(done)
+		return;
+
 	float z = 0;
 	for(list<TrackIter>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 	{
@@ -88,6 +104,8 @@ void SlopeTool::flatten()
 		(*i)->set_position(Vector(p.x, p.y, z));
 		(*i)->set_tilt(Angle::zero());
 	}
+
+	set_done(true);
 }
 
 void SlopeTool::set_slope(const TrackIter &track, float z, const Angle &tilt)