Class: Way

Inherits:
Object
  • Object
show all
Defined in:
lib/tile.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id, user, time, color) ⇒ Way

Returns a new instance of Way.



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# File 'lib/tile.rb', line 139

def initialize(id, user, time, color)
	@id = id
	@user = user
	@color = color
	if time.kind_of? String then
		#2009-06-18T20:32:16Z
		time =~ /(\d*)-(\d*)-(\d*)T(\d*):(\d*):(\d*)Z/
		@timestamp = Time.local($1,$2,$3,$4,$5,$6)
	else
		@timestamp = time
	end
	@nodes=[]
	@currentwp=nil
	@distance_result=Hash.new(nil)
end

Instance Attribute Details

#color ⇒ Object (readonly)

Returns the value of attribute color.



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# File 'lib/tile.rb', line 136

def color
  @color
end

#currentwp ⇒ Object

Returns the value of attribute currentwp.



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# File 'lib/tile.rb', line 136

def currentwp
  @currentwp
end

#nodes ⇒ Object (readonly)

Returns the value of attribute nodes.



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# File 'lib/tile.rb', line 136

def nodes
  @nodes
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/tile.rb', line 136

def path
  @path
end

Instance Method Details

#<<(node) ⇒ Object 



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# File 'lib/tile.rb', line 155

def <<(node)
	i=@nodes.index(nil)
	if i.nil? then
		@nodes << node
		# fetch last 10 elements
		check_nodes = @nodes[-10, 10]
		if check_nodes.nil? then
			check_nodes = @nodes
		end
		avg_nodes = check_nodes.find_all{|n|
			(node.timestamp - n.timestamp) <= SPEED_AVG_TIME_SEC
		}
		speeds=[]
		t_diff = 0.0
		avg_nodes.each_with_index{|n, i|
			if i>0 then
				t_diff = n.timestamp - avg_nodes[i-1].timestamp
				if t_diff > 0.0 then
					speeds << n.distanceto(avg_nodes[i-1].lon, avg_nodes[i-1].lat) / t_diff
				end
			end
		}
		if speeds.length > 0 then
			avg_speed = speeds.inject(0){ |result, element| result + element } / speeds.length * 3.6
		else
			avg_speed = 0.0
		end
		node.speed = avg_speed
		@nodes.length
	else
		@nodes[i]=node
		i+1
	end
end

#del(lon, lat) ⇒ Object 



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# File 'lib/tile.rb', line 190

def del(lon,lat)
	diff=[]
	@nodes.each{|n|
		diff << [ Math::sqrt((n.lat - lat) ** 2 + (n.lon - lon) ** 2) , n.lat, n.lon] if !n.nil?
	}
	mindist=999.0
	min=nil
	diff.each{|i|
		if i[0] < mindist then
			mindist = i[0]
			min=i
		end
	}
	deleted=nil
	@nodes.each_index {|i|
		if (!@nodes[i].nil?) and (@nodes[i].lat == min[1]) and (@nodes[i].lon == min[2]) then
			@nodes[i]=nil
			deleted=i
		end
	}
	return deleted+1
end

#distance(n) ⇒ Object 



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# File 'lib/tile.rb', line 227

def distance(n)
	if @distance_result[n].nil? then
		distancenode=nil
		total_distance=0.0
		@nodes.each{|n|
			if distancenode.nil? then distancenode = n; end
			d = n.distanceto(distancenode.lon, distancenode.lat)
			if  d >= 1.0 then # ignore if smaller than 1 meter
				total_distance += d
				distancenode = n
			end
			@distance_result[n] = total_distance
		}
 		end
	return @distance_result[n]
end

#duration_str ⇒ Object 



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# File 'lib/tile.rb', line 218

def duration_str
	if !@sec.nil? then
		return @sec
	end
	sec = (nodes.last.timestamp - nodes.first.timestamp).to_i
	min = sec / 60
	@sec = "#{min/60}:" + ("%02d" % (min % 60)) + (":%02d" % (sec % 60))
end

#toGPStime ⇒ Object 



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# File 'lib/tile.rb', line 213

def toGPStime()
	#2009-06-18T20:32:16Z
	return @timestamp.strftime("%Y-%m-%dT%H:%M:%SZ")
end