Whole world KML with innerboundaries displays wierd in google maps - google-maps

Question

I have a kml file that looks like the next:
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
<name>KML file with polygon for bird species range</name>
<description>Source various books and websites</description>
<Style id="rangecolour">
<LineStyle><color>660000FF</color><width>1</width></LineStyle>
<PolyStyle><color>660000FF</color></PolyStyle>
</Style>
<Style id="linecolour">
<LineStyle><color>660000FF</color><width>3</width></LineStyle>
</Style>
<Placemark><name>distribution/range</name>
<description></description>
<styleUrl>#rangecolour</styleUrl>
<Polygon>
<tessellate>1</tessellate>
<altitudeMode>clampToGround</altitudeMode>
<outerBoundaryIs>
<LinearRing>
<coordinates>
-180.0,180.0,0.0
-180.0,-180.0,0.0
180.0,-180.0,0.0
180.0,180.0,0.0
-180.0,180.0,0.0
</coordinates>
</LinearRing>
</outerBoundaryIs>
<innerBoundaryIs>
<LinearRing>
<coordinates>
153.056374,-27.500658,0.0
153.056374,-27.524105,0.0
153.093109,-27.524105,0.0
153.093109,-27.500658,0.0
153.056374,-27.500658,0.0
</coordinates>
</LinearRing>
</innerBoundaryIs>
</Polygon>
</Placemark>
</Document>
</kml>
My intention is to do a "hole" inside the entire world to get shadded all the world outside a boundaries (this is just an example), but, for some reason that I don't know, in Google Earth works fine, but in google maps (API v3, at least... is the one I'm using with "google.maps.KmlLayer(url.kml)"...) not.
Does anyone know why?

Answer 1

The outer boundary is:
<coordinates>
-180.0,180.0,0.0
-180.0,-180.0,0.0
180.0,-180.0,0.0
180.0,180.0,0.0
-180.0,180.0,0.0
</coordinates>
which is a very narrow square (between -180 and +180)
The KML displayed below uses this for the polygon (the whole world with a small hole):
<Placemark><name>distribution/range</name>
<description></description>
<styleUrl>#rangecolour</styleUrl>
<Polygon>
<tessellate>1</tessellate>
<altitudeMode>clampToGround</altitudeMode>
<outerBoundaryIs>
<LinearRing>
<coordinates>
180,85
90,85
0,85
-90,85
-180,85
-180,0
-180,-85
-90,-85
0,-85
90,-85
180,-85
180,0
180,85
</coordinates>
</LinearRing>
</outerBoundaryIs>
<innerBoundaryIs>
<LinearRing>
<coordinates>
153.056374,-27.500658,0.0
153.093109,-27.500658,0.0
153.093109,-27.524105,0.0
153.056374,-27.524105,0.0
153.056374,-27.500658,0.0
</coordinates>
</LinearRing>
</innerBoundaryIs>
</Polygon>
</Placemark>
This works for me with geoxml3, doesn't work with KmlLayer.
Another example
I don't know why, the Google Maps KML parser and KmlLayer have pretty much always been broken this way.
Related question: shading area outside of kml boundary