when 'getway'; results[index]=putdata(index,getway(args))
when 'putway'; results[index]=putdata(index,putway(args))
when 'deleteway'; results[index]=putdata(index,deleteway(args))
+ when 'makeway'; results[index]=putdata(index,makeway(args))
end
end
# ====================================================================
# Remote calls
- # ----- getpresets
- # return presets,presetmenus and presetnames arrays
+ # ----- getpresets
+ # return presets,presetmenus and presetnames arrays
def getpresets
presets={}
return [presets,presetmenus,presetnames]
end
- # ----- whichways(left,bottom,right,top)
- # return array of ways in current bounding box
- # at present, instead of using correct (=more complex) SQL to find
- # corner-crossing ways, it simply enlarges the bounding box by +/- 0.01
+ # ----- whichways(left,bottom,right,top)
+ # return array of ways in current bounding box
+ # at present, instead of using correct (=more complex) SQL to find
+ # corner-crossing ways, it simply enlarges the bounding box by +/- 0.01
def whichways(args)
xmin = args[0].to_f-0.01
return [ways,points]
end
- # ----- getway (objectname, way, baselong, basey, masterscale)
- # returns objectname, array of co-ordinates, attributes,
- # xmin,xmax,ymin,ymax
+ # ----- getway (objectname, way, baselong, basey, masterscale)
+ # returns objectname, array of co-ordinates, attributes,
+ # xmin,xmax,ymin,ymax
def getway(args)
objname,wayid,baselong,basey,masterscale=args
from =points[i ][2].to_i
to =points[i+1][2].to_i
if seg.has_key?(segid)
+ # if segment exists, check it still refers to the same nodes
if seg[segid]=="#{from}-#{to}" then
if (seglist!='') then seglist+=',' end; seglist+=segid.to_s
next
end
+ elsif segid>0
+ # not in previous version of way, but supplied, so assume
+ # that it's come from makeway (i.e. unwayed segments)
+ if (seglist!='') then seglist+=',' end; seglist+=segid.to_s
+ next
end
segid=ActiveRecord::Base.connection.insert("INSERT INTO current_segments ( node_a,node_b,timestamp,user_id,visible,tags) VALUES ( #{from},#{to},#{db_now},#{uid},1,'')")
ActiveRecord::Base.connection.insert("INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible,tags) VALUES (#{segid},#{from},#{to},#{db_now},#{uid},1,'')")
points[i+1][5]=segid
numberedsegments[(i+1).to_s]=segid.to_s
end
- # numberedsegments.each{|a,b| RAILS_DEFAULT_LOGGER.error("Sending back: seg no. #{a} -> id #{b}") }
# -- 6.ii insert new way segments
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
+
+def findconnect(id,nodesused,lookfor,baselong,basey,masterscale)
+ # get all segments with 'id' as a point
+ # (to look for both node_a and node_b, UNION is faster than node_a=id OR node_b=id)!
+ 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 segment_id IS NULL
+ AND cn1.id=node_a AND cn1.visible=1
+ AND cn2.id=node_b AND cn2.visible=1
+ AND node_a=#{id}
+ UNION
+ 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 segment_id IS NULL
+ AND cn1.id=node_a AND cn1.visible=1
+ AND cn2.id=node_b AND cn2.visible=1
+ AND node_b=#{id}
+ EOF
+ connectlist=ActiveRecord::Base.connection.select_all sql
+
+ if lookfor=='b' then tocol='id1'; tolat='lat1'; tolon='lon1'; fromcol='id2'
+ else tocol='id2'; tolat='lat2'; tolon='lon2'; fromcol='id1'
+ end
+
+ # eliminate those already in the hash
+ connex=0
+ point=nil
+ connectlist.each { |row|
+ tonode=row[tocol].to_i
+ fromnode=row[fromcol].to_i
+ if id==tonode and !nodesused.has_key?(fromnode)
+ connex+=1
+ nodesused[fromnode]=true
+ elsif id==fromnode and !nodesused.has_key?(tonode)
+ connex+=1
+ point=[long2coord(row[tolon].to_f,baselong,masterscale),lat2coord(row[tolat].to_f,basey,masterscale),tonode,1,{},row['segid'].to_i]
+ nodesused[tonode]=true
+ end
+ }
+
+ # if only one left, then add it; otherwise return false
+ if connex!=1 or point.nil? then
+ return [false,[],nodesused]
+ else
+ return [true,point,nodesused]
+ end
+end
+
+
# ====================================================================
# Support functions for remote calls
when 5; return nil # null
when 6; return nil # undefined
when 8; s.read(4) # mixedArray
- return getobject(s) # |
- when 10;return getarray(s) # array
- else; return nil # error
+ return getobject(s) # |
+ when 10; return getarray(s) # array
+ else; return nil # error
end
end
projects / rails.git / commitdiff