#!/usr/bin/env python

# Copyright 2008, Google Inc. All rights reserved.
#
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# modification, are permitted provided that the following conditions are met:
#
#  1. Redistributions of source code must retain the above copyright notice,
#     this list of conditions and the following disclaimer.
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#     this list of conditions and the following disclaimer in the documentation
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#  3. Neither the name of Google Inc. nor the names of its contributors may be
#     used to endorse or promote products derived from this software without
#     specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# This program demonstrates use of the KML DOM Python SWIG bindings for
# generating geometry.

import sys
import kmldom

def CreatePointPlacemark(name, lat, lng):
  factory = kmldom.KmlFactory_GetFactory()
  placemark = factory.CreatePlacemark()
  placemark.set_name(name)
  coordinates = factory.CreateCoordinates()
  coordinates.add_latlng(lat, lng)
  point = factory.CreatePoint()
  point.set_coordinates(coordinates)
  placemark.set_geometry(point)
  return placemark

def CreateSimple2dLineStringPlacemark(name, latlng):
  factory = kmldom.KmlFactory_GetFactory()
  placemark = factory.CreatePlacemark()
  placemark.set_name(name)
  coordinates = factory.CreateCoordinates()
  for (lat, lng) in latlng:
    coordinates.add_latlng(lat, lng)
  linestring = factory.CreateLineString()
  linestring.set_tessellate(True)
  linestring.set_coordinates(coordinates)
  placemark.set_geometry(linestring)
  return placemark

def CreateSimple2dPolygonPlacemark(name):
  factory = kmldom.KmlFactory_GetFactory()

  # <outerBoundaryIs><LinearRing>...
  linearing = factory.CreateLinearRing()
  outerboundaryis = factory.CreateOuterBoundaryIs()
  outerboundaryis.set_linearring(linearing)

  # <Polygon><outerBoundaryIs>... <innerBoundaryIs>...
  polygon = factory.CreatePolygon()
  polygon.set_tessellate(True)
  polygon.set_outerboundaryis(outerboundaryis)

  # <Placemark><Polygon>...
  placemark = factory.CreatePlacemark()
  placemark.set_name(name)
  placemark.set_geometry(polygon)

  return placemark

def Create2HolePolygonPlacemark(name):
  factory = kmldom.KmlFactory_GetFactory()

  # <Polygon>
  polygon = factory.CreatePolygon()

  # <outerBoundaryIs><LinearRing><coordinates>
  outerboundaryis = factory.CreateOuterBoundaryIs()
  linearring = factory.CreateLinearRing()
  coordinates = factory.CreateCoordinates()
  coordinates.add_latlngalt(37.823360,-122.374208,0)
  coordinates.add_latlngalt(37.823360,-122.369120,0)
  coordinates.add_latlngalt(37.827271,-122.369073,0)
  coordinates.add_latlngalt(37.827259,-122.374655,0)
  coordinates.add_latlngalt(37.823360,-122.374208,0)
  linearring.set_coordinates(coordinates)
  outerboundaryis.set_linearring(linearring)
  polygon.set_outerboundaryis(outerboundaryis)

  # <innerBoundaryIs><LinearRing><coordinates>
  innerboundaryis = factory.CreateInnerBoundaryIs()
  linearring = factory.CreateLinearRing()
  coordinates = factory.CreateCoordinates()
  coordinates.add_latlngalt(37.825728,-122.373670,0)
  coordinates.add_latlngalt(37.825715,-122.372255,0)
  coordinates.add_latlngalt(37.826578,-122.372886,0)
  coordinates.add_latlngalt(37.825728,-122.373670,0)
  linearring.set_coordinates(coordinates)
  innerboundaryis.set_linearring(linearring)
  polygon.add_innerboundaryis(innerboundaryis)

  # <innerBoundaryIs><LinearRing><coordinates>
  innerboundaryis = factory.CreateInnerBoundaryIs()
  linearring = factory.CreateLinearRing()
  coordinates = factory.CreateCoordinates()
  coordinates.add_latlngalt(37.824914,-122.371487,0)
  coordinates.add_latlngalt(37.824089,-122.372024,0)
  coordinates.add_latlngalt(37.824065,-122.370626,0)
  coordinates.add_latlngalt(37.824914,-122.371487,0)
  linearring.set_coordinates(coordinates)
  innerboundaryis.set_linearring(linearring)
  polygon.add_innerboundaryis(innerboundaryis)

  # <Placemark><name>... <Polygon>...
  placemark = factory.CreatePlacemark()
  placemark.set_name(name)
  placemark.set_geometry(polygon)

  return placemark

def main():
  print '== This is %s' % sys.argv[0]

  factory = kmldom.KmlFactory_GetFactory()

  # <Document>
  document = factory.CreateDocument()

  # Each Create*Placemark() creates and returns a Placemark.
  document.add_feature(CreatePointPlacemark('pt0',1,2))
  document.add_feature(CreatePointPlacemark('pt1',3,4))
  lnglat = [(1,2),(3,4),(5,6),(7,8)]
  document.add_feature(CreateSimple2dLineStringPlacemark('line',lnglat))
  document.add_feature(CreateSimple2dPolygonPlacemark('box'))
  document.add_feature(Create2HolePolygonPlacemark('2 holes'))

  # <Placemark><MultiGeometry><Point>... <LineString>...
  placemark = factory.CreatePlacemark()
  multigeometry = factory.CreateMultiGeometry()
  multigeometry.add_geometry(factory.CreatePoint())
  multigeometry.add_geometry(factory.CreateLineString())
  placemark.set_geometry(multigeometry)
  document.add_feature(placemark)

  # <kml>
  kml = factory.CreateKml()
  kml.set_feature(document)

  print 'Serialize to xml...'
  print kmldom.SerializePretty(kml)

if __name__ == '__main__':
  main()