class SwfController < ApplicationController
- skip_before_filter :verify_authenticity_token
- before_filter :check_api_readable
+ skip_before_action :verify_authenticity_token
+ before_action :check_api_readable
# to log:
# RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
# ====================================================================
# Public methods
- # ---- trackpoints compile SWF of trackpoints
+ # ---- trackpoints compile SWF of trackpoints
def trackpoints
- # - Initialise
+ # - Initialise
- baselong = params['baselong'].to_f
- basey = params['basey'].to_f
- masterscale = params['masterscale'].to_f
+ baselong = params["baselong"].to_f
+ basey = params["basey"].to_f
+ masterscale = params["masterscale"].to_f
- bbox = BoundingBox.new(params['xmin'], params['ymin'],
- params['xmax'], params['ymax'])
- start = params['start'].to_i
+ bbox = BoundingBox.new(params["xmin"], params["ymin"],
+ params["xmax"], params["ymax"])
+ start = params["start"].to_i
- # - Begin movie
+ # - Begin movie
bounds_left = 0
bounds_right = 320 * 20
bounds_bottom = 0
bounds_top = 240 * 20
- m = ''
- m += swfRecord(9, 255.chr + 155.chr + 155.chr) # Background
+ m = ""
+ m += swf_record(9, 255.chr + 155.chr + 155.chr) # Background
absx = 0
absy = 0
xl = yb = 9999999
xr = yt = -9999999
- # - Send SQL for GPS tracks
+ # - Send SQL for GPS tracks
- b = ''
+ b = ""
lasttime = 0
- lasttrack = lastfile = '-1'
+ lasttrack = lastfile = "-1"
- if params['token']
+ if params["token"]
user = User.authenticate(:token => params[:token])
- sql = "SELECT gps_points.latitude*0.0000001 AS lat,gps_points.longitude*0.0000001 AS lon,gpx_files.id AS fileid," + " EXTRACT(EPOCH FROM gps_points.timestamp) AS ts, gps_points.trackid AS trackid " + " FROM gpx_files,gps_points " + "WHERE gpx_files.id=gpx_id " + " AND gpx_files.user_id=#{user.id} " + " AND " + OSM.sql_for_area(bbox, "gps_points.") + " AND (gps_points.timestamp IS NOT NULL) " + "ORDER BY fileid DESC,ts " + "LIMIT 10000 OFFSET #{start}"
+ sql = "SELECT gps_points.latitude*0.0000001 AS lat,gps_points.longitude*0.0000001 AS lon,gpx_files.id AS fileid," + " EXTRACT(EPOCH FROM gps_points.timestamp) AS ts, gps_points.trackid AS trackid " + " FROM gpx_files,gps_points " + "WHERE gpx_files.id=gpx_id " + " AND gpx_files.user_id=#{user.id} " + " AND " + OSM.sql_for_area(bbox, "gps_points.") + " AND (gps_points.timestamp IS NOT NULL) " + "ORDER BY fileid DESC,ts " + "LIMIT 10000 OFFSET #{start}"
else
- sql = "SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,gpx_id AS fileid," + " EXTRACT(EPOCH FROM timestamp) AS ts, gps_points.trackid AS trackid " + " FROM gps_points " + "WHERE " + OSM.sql_for_area(bbox, "gps_points.") + " AND (gps_points.timestamp IS NOT NULL) " + "ORDER BY fileid DESC,ts " + "LIMIT 10000 OFFSET #{start}"
+ sql = "SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,gpx_id AS fileid," + " EXTRACT(EPOCH FROM timestamp) AS ts, gps_points.trackid AS trackid " + " FROM gps_points " + "WHERE " + OSM.sql_for_area(bbox, "gps_points.") + " AND (gps_points.timestamp IS NOT NULL) " + "ORDER BY fileid DESC,ts " + "LIMIT 10000 OFFSET #{start}"
end
gpslist = ActiveRecord::Base.connection.select_all sql
# - Draw GPS trace lines
- r = startShape
+ r = start_shape
gpslist.each do |row|
- xs = (long2coord(row['lon'].to_f, baselong, masterscale) * 20).floor
- ys = (lat2coord(row['lat'].to_f, basey, masterscale) * 20).floor
- xl = [xs, xl].min; xr = [xs, xr].max
- yb = [ys, yb].min; yt = [ys, yt].max
- if row['ts'].to_i - lasttime > 180 || row['fileid'] != lastfile || row['trackid'] != lasttrack # or row['ts'].to_i==lasttime
- b += startAndMove(xs, ys, '01')
- absx = xs.floor; absy = ys.floor
- end
- b += drawTo(absx, absy, xs, ys)
- absx = xs.floor; absy = ys.floor
- lasttime = row['ts'].to_i
- lastfile = row['fileid']
- lasttrack = row['trackid']
- while b.length > 80
- r += [b.slice!(0...80)].pack("B*")
+ xs = (long2coord(row["lon"].to_f, baselong, masterscale) * 20).floor
+ ys = (lat2coord(row["lat"].to_f, basey, masterscale) * 20).floor
+ xl = [xs, xl].min
+ xr = [xs, xr].max
+ yb = [ys, yb].min
+ yt = [ys, yt].max
+ if row["ts"].to_i - lasttime > 180 || row["fileid"] != lastfile || row["trackid"] != lasttrack # or row['ts'].to_i==lasttime
+ b += start_and_move(xs, ys, "01")
+ absx = xs.floor
+ absy = ys.floor
end
+ b += draw_to(absx, absy, xs, ys)
+ absx = xs.floor
+ absy = ys.floor
+ lasttime = row["ts"].to_i
+ lastfile = row["fileid"]
+ lasttrack = row["trackid"]
+ r += [b.slice!(0...80)].pack("B*") while b.length > 80
end
# (Unwayed segments removed)
# - Write shape
- b += endShape
+ b += end_shape
r += [b].pack("B*")
- m += swfRecord(2, packUI16(1) + packRect(xl, xr, yb, yt) + r)
- m += swfRecord(4, packUI16(1) + packUI16(1))
+ m += swf_record(2, pack_u16(1) + pack_rect(xl, xr, yb, yt) + r)
+ m += swf_record(4, pack_u16(1) + pack_u16(1))
- # - Create Flash header and write to browser
+ # - Create Flash header and write to browser
- m += swfRecord(1, '') # Show frame
- m += swfRecord(0, '') # End
+ m += swf_record(1, "") # Show frame
+ m += swf_record(0, "") # End
- m = packRect(bounds_left, bounds_right, bounds_bottom, bounds_top) + 0.chr + 12.chr + packUI16(1) + m
- m = 'FWS' + 6.chr + packUI32(m.length + 8) + m
+ m = pack_rect(bounds_left, bounds_right, bounds_bottom, bounds_top) + 0.chr + 12.chr + pack_u16(1) + m
+ m = "FWS" + 6.chr + pack_u32(m.length + 8) + m
- render :text => m, :content_type => "application/x-shockwave-flash"
+ render :body => m, :content_type => "application/x-shockwave-flash"
end
private
# -----------------------------------------------------------------------
# Line-drawing
- def startShape
- s = 0.chr # No fill styles
- s += 2.chr # Two line styles
- s += packUI16(0) + 0.chr + 255.chr + 255.chr # Width 5, RGB #00FFFF
- s += packUI16(0) + 255.chr + 0.chr + 255.chr # Width 5, RGB #FF00FF
- s += 34.chr # 2 fill, 2 line index bits
+ def start_shape
+ s = 0.chr # No fill styles
+ s += 2.chr # Two line styles
+ s += pack_u16(0) + 0.chr + 255.chr + 255.chr # Width 5, RGB #00FFFF
+ s += pack_u16(0) + 255.chr + 0.chr + 255.chr # Width 5, RGB #FF00FF
+ s += 34.chr # 2 fill, 2 line index bits
s
end
- def endShape
- '000000'
+ def end_shape
+ "000000"
end
- def startAndMove(x, y, col)
- d = '001001' # Line style change, moveTo
- l = [lengthSB(x), lengthSB(y)].max
- d += sprintf("%05b%0#{l}b%0#{l}b", l, x, y)
- d += col # Select line style
+ def start_and_move(x, y, col)
+ d = "001001" # Line style change, moveTo
+ l = [length_sb(x), length_sb(y)].max
+ d += format("%05b%0*b%0*b", l, l, x, l, y)
+ d += col # Select line style
+ d
end
- def drawTo(absx, absy, x, y)
+ def draw_to(absx, absy, x, y)
dx = x - absx
dy = y - absy
mstep = [dx.abs / 16383, dy.abs / 16383, 1].max.ceil
xstep = dx / mstep
ystep = dy / mstep
- d = ''
- for i in (1..mstep)
- d += drawSection(x, y, x + xstep, y + ystep)
+ d = ""
+ 1.upto(mstep).each do
+ d += draw_section(x, y, x + xstep, y + ystep)
x += xstep
y += ystep
end
d
end
- def drawSection(x1, y1, x2, y2)
- d = '11' # TypeFlag, EdgeFlag
+ def draw_section(x1, y1, x2, y2)
+ d = "11" # TypeFlag, EdgeFlag
dx = x2 - x1
dy = y2 - y1
- l = [lengthSB(dx), lengthSB(dy)].max
- d += sprintf("%04b", l - 2)
- d += '1' # GeneralLine
- d += sprintf("%0#{l}b%0#{l}b", dx, dy)
+ l = [length_sb(dx), length_sb(dy)].max
+ d += format("%04b", l - 2)
+ d += "1" # GeneralLine
+ d += format("%0*b%0*b", l, dx, l, dy)
+ d
end
# -----------------------------------------------------------------------
# SWF data block type
- def swfRecord(id, r)
+ def swf_record(id, r)
if r.length > 62
# Long header: tag id, 0x3F, length
- return packUI16((id << 6) + 0x3F) + packUI32(r.length) + r
+ pack_u16((id << 6) + 0x3F) + pack_u32(r.length) + r
else
# Short header: tag id, length
- return packUI16((id << 6) + r.length) + r
+ pack_u16((id << 6) + r.length) + r
end
end
# SWF RECT type
- def packRect(a, b, c, d)
- l = [lengthSB(a),
- lengthSB(b),
- lengthSB(c),
- lengthSB(d)].max
+ def pack_rect(a, b, c, d)
+ l = [length_sb(a),
+ length_sb(b),
+ length_sb(c),
+ length_sb(d)].max
# create binary string (00111001 etc.) - 5-byte length, then bbox
- n = sprintf("%05b%0#{l}b%0#{l}b%0#{l}b%0#{l}b", l, a, b, c, d)
+ n = format("%05b%0*b%0*b%0*b%0*b", l, l, a, l, b, l, c, l, d)
# pack into byte string
[n].pack("B*")
end
# -----------------------------------------------------------------------
# Generic pack functions
- def packUI16(n)
+ def pack_u16(n)
[n.floor].pack("v")
end
- def packUI32(n)
+ def pack_u32(n)
[n.floor].pack("V")
end
# Find number of bits required to store arbitrary-length binary
- def lengthSB(n)
- Math.frexp(n + (n == 0 ? 1 : 0))[1] + 1
+ def length_sb(n)
+ Math.frexp(n + (n.zero? ? 1 : 0))[1] + 1
end
# ====================================================================
def lat2y(a)
180 / Math::PI * Math.log(Math.tan(Math::PI / 4 + a * (Math::PI / 180) / 2))
end
-
- def sqlescape(a)
- a.gsub("'", "''").gsub(92.chr, 92.chr + 92.chr)
- end
end
projects / rails.git / blobdiff