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August 1, 2013 15:30
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import math | |
########################################################### | |
## Google map python wrapper V0.1 | |
## | |
############################################################ | |
class maps: | |
def __init__(self, centerLat, centerLng, zoom ): | |
self.center = (float(centerLat),float(centerLng)) | |
self.zoom = int(zoom) | |
self.grids = None | |
self.paths = [] | |
self.points = [] | |
self.radpoints = [] | |
self.gridsetting = None | |
self.coloricon = 'http://chart.apis.google.com/chart?cht=mm&chs=12x16&chco=FFFFFF,XXXXXX,000000&ext=.png' | |
def setgrids(self,slat,elat,latin,slng,elng,lngin): | |
self.gridsetting = [slat,elat,latin,slng,elng,lngin] | |
def addpoint(self, lat, lng, color = '#FF0000', title = None): | |
self.points.append((lat,lng,color[1:],title)) | |
#def addpointcoord(self, coord): | |
# self.points.append((coord[0],coord[1])) | |
def addradpoint(self, lat,lng,rad,color = '#0000FF'): | |
radpoint = {'pt':(lat,lng), 'rad':rad, 'color':color} | |
self.radpoints.append(radpoint) | |
def addpath(self,path, color = '#FF0000', fillcolor='#FF0000', opacity=False): | |
path = {'path':path, 'strokeColor':color, 'fillColor':fillcolor, 'opacity':opacity} | |
self.paths.append(path) | |
#create the html file which inlcude one google map and all points and paths | |
def draw(self, htmlfile): | |
f = open(htmlfile,'w') | |
f.write('<html>\n') | |
f.write('<head>\n') | |
f.write('<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />\n') | |
f.write('<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>\n') | |
f.write('<title>Google Maps - pygmaps </title>\n') | |
f.write('<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>\n') | |
f.write('<script type="text/javascript">\n') | |
f.write('\tfunction initialize() {\n') | |
self.drawmap(f) | |
self.drawgrids(f) | |
self.drawpoints(f) | |
self.drawradpoints(f) | |
self.drawpaths(f,self.paths) | |
f.write('\t}\n') | |
f.write('</script>\n') | |
f.write('</head>\n') | |
f.write('<body style="margin:0px; padding:0px;" onload="initialize()">\n') | |
f.write('\t<div id="map_canvas" style="width: 100%; height: 100%;"></div>\n') | |
f.write('</body>\n') | |
f.write('</html>\n') | |
f.close() | |
def drawgrids(self, f): | |
if self.gridsetting == None: | |
return | |
slat = self.gridsetting[0] | |
elat = self.gridsetting[1] | |
latin = self.gridsetting[2] | |
slng = self.gridsetting[3] | |
elng = self.gridsetting[4] | |
lngin = self.gridsetting[5] | |
self.grids = [] | |
r = [slat+float(x)*latin for x in range(0, int((elat-slat)/latin))] | |
for lat in r: | |
self.grids.append([(lat+latin/2.0,slng+lngin/2.0),(lat+latin/2.0,elng+lngin/2.0)]) | |
r = [slng+float(x)*lngin for x in range(0, int((elng-slng)/lngin))] | |
for lng in r: | |
self.grids.append([(slat+latin/2.0,lng+lngin/2.0),(elat+latin/2.0,lng+lngin/2.0)]) | |
for line in self.grids: | |
self.drawPolyline(f,line,strokeColor = "#000000") | |
def drawpoints(self,f): | |
for point in self.points: | |
self.drawpoint(f,point[0],point[1],point[2],point[3]) | |
def drawradpoints(self, f): | |
for rpoint in self.radpoints: | |
path = self.getcycle(rpoint['pt'],rpoint['rad']) | |
self.drawPolygon(f,path,strokeColor = rpoint['color']) | |
def getcycle(self,center,radius): | |
cycle = [] | |
lat, lng = center | |
rad = radius #unit: meter | |
d = (rad/1000.0)/6378.8; | |
lat1 = (math.pi/180.0)* lat | |
lng1 = (math.pi/180.0)* lng | |
r = [x*30 for x in range(12)] | |
for a in r: | |
tc = (math.pi/180.0)*a; | |
y = math.asin(math.sin(lat1)*math.cos(d)+math.cos(lat1)*math.sin(d)*math.cos(tc)) | |
dlng = math.atan2(math.sin(tc)*math.sin(d)*math.cos(lat1),math.cos(d)-math.sin(lat1)*math.sin(y)) | |
x = ((lng1-dlng+math.pi) % (2.0*math.pi)) - math.pi | |
cycle.append( ( float(y*(180.0/math.pi)),float(x*(180.0/math.pi)) ) ) | |
return cycle | |
def drawpaths(self, f, paths): | |
for path in paths: | |
if not path['opacity']: | |
#fill is false | |
self.drawPolyline(f,path['path'], strokeColor = path['strokeColor']) | |
else: | |
self.drawPolygon(f,path['path'],strokeColor=path['strokeColor'], fillColor=path['fillColor'], fillOpacity=path['opacity']) | |
############################################# | |
# # # # # # Low level Map Drawing # # # # # # | |
############################################# | |
def drawmap(self, f): | |
f.write('\t\tvar centerlatlng = new google.maps.LatLng(%f, %f);\n' % (self.center[0],self.center[1])) | |
f.write('\t\tvar myOptions = {\n') | |
f.write('\t\t\tzoom: %d,\n' % (self.zoom)) | |
f.write('\t\t\tcenter: centerlatlng,\n') | |
f.write('\t\t\tmapTypeId: google.maps.MapTypeId.ROADMAP\n') | |
f.write('\t\t};\n') | |
f.write('\t\tvar map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);\n') | |
f.write('\n') | |
def drawpoint(self,f,lat,lon,color,title): | |
f.write('\t\tvar latlng = new google.maps.LatLng(%f, %f);\n'%(lat,lon)) | |
f.write('\t\tvar img = new google.maps.MarkerImage(\'%s\');\n' % (self.coloricon.replace('XXXXXX',color))) | |
f.write('\t\tvar marker = new google.maps.Marker({\n') | |
if title !=None: | |
f.write('\t\ttitle: "'+str(title)+'",\n') | |
f.write('\t\ticon: img,\n') | |
f.write('\t\tposition: latlng\n') | |
f.write('\t\t});\n') | |
f.write('\t\tmarker.setMap(map);\n') | |
f.write('\n') | |
def drawPolyline(self,f,path,\ | |
clickable = False, \ | |
geodesic = True,\ | |
strokeColor = "#FF0000",\ | |
strokeOpacity = 1.0,\ | |
strokeWeight = 2 | |
): | |
f.write('var PolylineCoordinates = [\n') | |
for coordinate in path: | |
f.write('new google.maps.LatLng(%f, %f),\n' % (coordinate[0],coordinate[1])) | |
f.write('];\n') | |
f.write('\n') | |
f.write('var Path = new google.maps.Polyline({\n') | |
f.write('clickable: %s,\n' % (str(clickable).lower())) | |
f.write('geodesic: %s,\n' % (str(geodesic).lower())) | |
f.write('path: PolylineCoordinates,\n') | |
f.write('strokeColor: "%s",\n' %(strokeColor)) | |
f.write('strokeOpacity: %f,\n' % (strokeOpacity)) | |
f.write('strokeWeight: %d\n' % (strokeWeight)) | |
f.write('});\n') | |
f.write('\n') | |
f.write('Path.setMap(map);\n') | |
f.write('\n\n') | |
def drawPolygon(self,f,path,\ | |
clickable = False, \ | |
geodesic = True,\ | |
fillColor = "#000000",\ | |
fillOpacity = 0.0,\ | |
strokeColor = "#FF0000",\ | |
strokeOpacity = 1.0,\ | |
strokeWeight = 1 | |
): | |
f.write('var coords = [\n') | |
for coordinate in path: | |
f.write('new google.maps.LatLng(%f, %f),\n' % (coordinate[0],coordinate[1])) | |
f.write('];\n') | |
f.write('\n') | |
f.write('var polygon = new google.maps.Polygon({\n') | |
f.write('clickable: %s,\n' % (str(clickable).lower())) | |
f.write('geodesic: %s,\n' % (str(geodesic).lower())) | |
f.write('fillColor: "%s",\n' %(fillColor)) | |
f.write('fillOpacity: %f,\n' % (fillOpacity)) | |
f.write('paths: coords,\n') | |
f.write('strokeColor: "%s",\n' %(strokeColor)) | |
f.write('strokeOpacity: %f,\n' % (strokeOpacity)) | |
f.write('strokeWeight: %d\n' % (strokeWeight)) | |
f.write('});\n') | |
f.write('\n') | |
f.write('polygon.setMap(map);\n') | |
f.write('\n\n') | |
if __name__ == "__main__": | |
########## CONSTRUCTOR: pygmaps(latitude, longitude, zoom) ############################## | |
# DESC: initialize a map with latitude and longitude of center point | |
# and map zoom level "15" | |
# PARAMETER1: latitude (float) latittude of map center point | |
# PARAMETER2: longitude (float) latittude of map center point | |
# PARAMETER3: zoom (int) map zoom level 0~20 | |
# RETURN: the instant of pygmaps | |
#======================================================================================== | |
mymap = pygmaps(37.428, -122.145, 16) | |
########## FUNCTION: setgrids(start-Lat, end-Lat, Lat-interval, start-Lng, end-Lng, Lng-interval) ###### | |
# DESC: set grids on map | |
# PARAMETER1: start-Lat (float), start (minimum) latittude of the grids | |
# PARAMETER2: end-Lat (float), end (maximum) latittude of the grids | |
# PARAMETER3: Lat-interval (float) grid size in latitude | |
# PARAMETER4: start-Lng (float), start (minimum) longitude of the grids | |
# PARAMETER5: end-Lng (float), end (maximum) longitude of the grids | |
# PARAMETER6: Lng-interval (float) grid size in longitude | |
# RETURN: no returns | |
#======================================================================================== | |
mymap.setgrids(37.42, 37.43, 0.001, -122.15, -122.14, 0.001) | |
########## FUNCTION: addpoint(latitude, longitude, [color])############################# | |
# DESC: add a point into a map and dispaly it, color is optional default is red | |
# PARAMETER1: latitude (float) latitude of the point | |
# PARAMETER2: longitude (float) longitude of the point | |
# PARAMETER3: color (string) color of the point showed in map, using HTML color code | |
# HTML COLOR CODE: http://www.computerhope.com/htmcolor.htm | |
# e.g. red "#FF0000", Blue "#0000FF", Green "#00FF00" | |
# RETURN: no return | |
#======================================================================================== | |
mymap.addpoint(37.427, -122.145, "#0000FF") | |
########## FUNCTION: addradpoint(latitude, longitude, radius, [color])################## | |
# DESC: add a point with a radius (Meter) - Draw cycle | |
# PARAMETER1: latitude (float) latitude of the point | |
# PARAMETER2: longitude (float) longitude of the point | |
# PARAMETER3: radius (float), radius in meter | |
# PARAMETER4: color (string) color of the point showed in map, using HTML color code | |
# HTML COLOR CODE: http://www.computerhope.com/htmcolor.htm | |
# e.g. red "#FF0000", Blue "#0000FF", Green "#00FF00" | |
# RETURN: no return | |
#======================================================================================== | |
mymap.addradpoint(37.429, -122.145, 95, "#FF0000","hello") | |
########## FUNCTION: addpath(path,[color])############################################## | |
# DESC: add a path into map, the data struceture of Path is a list of points | |
# PARAMETER1: path (list of coordinates) e.g. [(lat1,lng1),(lat2,lng2),...] | |
# PARAMETER2: color (string) color of the point showed in map, using HTML color code | |
# HTML COLOR CODE: http://www.computerhope.com/htmcolor.htm | |
# e.g. red "#FF0000", Blue "#0000FF", Green "#00FF00" | |
# RETURN: no return | |
#======================================================================================== | |
path = [(37.429, -122.145),(37.428, -122.145),(37.427, -122.145),(37.427, -122.146),(37.427, -122.146)] | |
mymap.addpath(path,"#00FF00") | |
########## FUNCTION: addpath(file)###################################################### | |
# DESC: create the html map file (.html) | |
# PARAMETER1: file (string) the map path and file | |
# RETURN: no return, generate html file in specified directory | |
#======================================================================================== | |
mymap.draw('./mymap.html') | |
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