- ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
- if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end
- if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end
-
- [originalway,way,renumberednodes,numberedsegments,xmin,xmax,ymin,ymax]
- end
-
- # ----- deleteway (user token, way)
- # returns way ID only
-
- def deleteway(args)
- usertoken,way=args
-
- RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}")
-
- uid=getuserid(usertoken); if !uid then return end
- way=way.to_i
-
- db_uqs='uniq'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquesegments table name, typically 51 chars
- db_uqn='unin'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars
- db_now='@now'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
- ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
- createuniquesegments(way,db_uqs,'')
-
- # - delete any otherwise unused segments
-
- sql=<<-EOF
- INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible)
- SELECT DISTINCT segment_id,node_a,node_b,#{db_now},#{uid},0
- FROM current_segments AS cs, #{db_uqs} AS us
- WHERE cs.id=us.segment_id
- EOF
- ActiveRecord::Base.connection.insert(sql)
-
- sql=<<-EOF
- UPDATE current_segments AS cs, #{db_uqs} AS us
- SET cs.timestamp=#{db_now},cs.visible=0,cs.user_id=#{uid}
- WHERE cs.id=us.segment_id
- EOF
- ActiveRecord::Base.connection.update(sql)
-
- # - delete any unused nodes
-
- createuniquenodes(db_uqs,db_uqn)
-
- 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_segments 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)
- x,y,baselong,basey,masterscale=args
- points=[]
- 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)
- 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_segments 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 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=findconnect(points[0][2],nodesused,'b',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=findconnect(points[-1][2],nodesused,'a',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
-
- [points,xmin,xmax,ymin,ymax]
-end
projects / rails.git / blobdiff