#!/usr/bin/env python

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# This program demonstrates use of the KML DOM Python SWIG bindings for
# creating and accessing simple elements and attributes such as
# Feature's <name> and <visibility> and Object's id= as in <Placemark>.

import sys
import kmlbase
import kmldom
import kmlengine

# Program main: Parse a simple Point Placemark and print the coordinates.
def main():
  print '== This is %s' % sys.argv[0]
  
  kml = ('<kml>\n<Placemark>\n<name>foo</name>\n'
         '<Point>\n<coordinates>-122, 37</coordinates>\n</Point>\n'
         '</Placemark>\n</kml>')

  print 'kml is:\n%s' % kml
  print 'parsing kml'

  # Use the convenience function to return the root feature of the parsed KML.
  root_feature = kmlengine.GetRootFeature(kmldom.ParseKml(kml))

  # We know the root feature is a Placemark.
  placemark = kmldom.AsPlacemark(root_feature)

  # Extract the coordinates and print them.
  point = kmldom.AsPoint(placemark.get_geometry())
  coordinates = point.get_coordinates().get_coordinates_array_at(0)
  print 'lat: %0.3f, lng %0.3f' %(coordinates.get_latitude(),
                                  coordinates.get_longitude())


if __name__ == '__main__':
  main()
