+ sql=<<-EOF
+ INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible)
+ SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0
+ FROM current_nodes AS cn,#{db_uqn}
+ WHERE cn.id=node_id
+ EOF
+ ActiveRecord::Base.connection.insert(sql)
+
+ sql=<<-EOF
+ UPDATE current_nodes AS cn, #{db_uqn}
+ SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
+ WHERE cn.id=node_id
+ EOF
+ ActiveRecord::Base.connection.update(sql)
+
+ ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}")
+ ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}")
+
+ # - delete way
+
+ ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)")
+ ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}")
+ ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}")
+ ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
+
+ way
+end
+
+# ----- makeway(x,y,baselong,basey,masterscale)
+# returns way made from unwayed segments
+
+def makeway(args)
+ usertoken,x,y,baselong,basey,masterscale=args
+ uid=getuserid(usertoken)
+ return if !uid
+
+ points=[]
+ toreverse=[] # segments to reverse
+ nodesused={} # so we don't go over the same node twice
+
+ # - find start point near x
+
+ xc=coord2long(x,masterscale,baselong)
+ yc=coord2lat(y,masterscale,basey)
+
+ RAILS_DEFAULT_LOGGER.info(" Message: makeway, xc=#{xc}, y=#{yc}")
+
+ xs1=xc-0.001; xs2=xc+0.001
+ ys1=yc-0.001; ys2=yc+0.001
+
+ sql=<<-EOF
+ SELECT cn1.latitude AS lat1,cn1.longitude AS lon1,cn1.id AS id1,
+ cn2.latitude AS lat2,cn2.longitude AS lon2,cn2.id AS id2, cs.id AS segid
+ FROM current_nodes AS cn1,
+ current_nodes AS cn2,
+ current_segments AS cs
+ LEFT OUTER JOIN current_way_nodes ON segment_id=cs.id
+ WHERE (cn1.longitude BETWEEN #{xs1} AND #{xs2})
+ AND (cn1.latitude BETWEEN #{ys1} AND #{ys2})
+ AND segment_id IS NULL
+ AND cs.visible=1
+ AND cn1.id=node_a AND cn1.visible=1
+ AND cn2.id=node_b AND cn2.visible=1
+ ORDER BY SQRT(POW(cn1.longitude-#{xc},2)+
+ POW(cn1.latitude -#{yc},2))
+ LIMIT 1
+ EOF
+ row=ActiveRecord::Base.connection.select_one sql
+ if row.nil? then return [0,0,0,0,0] end
+ xs1=long2coord(row['lon1'].to_f,baselong,masterscale); ys1=lat2coord(row['lat1'].to_f,basey,masterscale)
+ xs2=long2coord(row['lon2'].to_f,baselong,masterscale); ys2=lat2coord(row['lat2'].to_f,basey,masterscale)
+ xmin=[xs1,xs2].min; xmax=[xs1,xs2].max
+ ymin=[ys1,ys2].min; ymax=[ys1,ys2].max
+ nodesused[row['id1'].to_i]=true
+ nodesused[row['id2'].to_i]=true
+ points<<[xs1,ys1,row['id1'].to_i,1,{},0]
+ points<<[xs2,ys2,row['id2'].to_i,1,{},row['segid'].to_i]
+
+ # - extend at start, then end
+ while (a,point,nodesused,toreverse=findconnect(points[0][2],nodesused,'b',toreverse,baselong,basey,masterscale))[0]
+ points[0][5]=point[5]; point[5]=0 # segment leads to next node
+ points.unshift(point)
+ xmin=[point[0],xmin].min; xmax=[point[0],xmax].max
+ ymin=[point[1],ymin].min; ymax=[point[1],ymax].max
+ end
+ while (a,point,nodesused,toreverse=findconnect(points[-1][2],nodesused,'a',toreverse,baselong,basey,masterscale))[0]
+ points.push(point)
+ xmin=[point[0],xmin].min; xmax=[point[0],xmax].max
+ ymin=[point[1],ymin].min; ymax=[point[1],ymax].max
+ end
+ points[0][3]=0 # start with a move
+
+ # reverse segments in toreverse
+ if toreverse.length>0
+ sql=<<-EOF
+ UPDATE current_segments c1, current_segments c2
+ SET c1.node_a=c2.node_b,c1.node_b=c2.node_a,
+ c1.timestamp=NOW(),c1.user_id=#{uid}
+ WHERE c1.id=c2.id
+ AND c1.id IN (#{toreverse.join(',')})
+ EOF
+ ActiveRecord::Base.connection.update sql
+ sql=<<-EOF
+ INSERT INTO segments
+ (SELECT * FROM current_segments
+ WHERE id IN (#{toreverse.join(',')}))
+ EOF
+ ActiveRecord::Base.connection.insert sql
+ end
+
+ [points,xmin,xmax,ymin,ymax]
+end
projects / rails.git / blobdiff