Add a polygon to a map

Select platform: Android iOS

Polygons on a 3D map

The following code sample demonstrates how to add a 3D polygon and position it in 3D space by calling the addPolygon method. To use this code sample, follow the instructions in Setup and Add a 3D map to your app to set up your Android Studio project with a basic 3D map. Then, add the following code to the MainActivity.kt file:

// Add imports and define variables
importcom.google.android.gms.maps3d.model.LatLngAltitude
importcom.google.android.gms.maps3d.model.polygonOptions
valzooOutline="""
 39.7508987, -104.9565381
 39.7502883, -104.9565489
 39.7501976, -104.9563557
 39.7501481, -104.955594
 39.7499171, -104.9553043
 39.7495872, -104.9551648
 39.7492407, -104.954961
 39.7489685, -104.9548859
 39.7484488, -104.9548966
 39.7481189, -104.9548859
 39.7479539, -104.9547679
 39.7479209, -104.9544567
 39.7476487, -104.9535341
 39.7475085, -104.9525792
 39.7474095, -104.9519247
 39.747525, -104.9513776
 39.7476734, -104.9511844
 39.7478137, -104.9506265
 39.7477559, -104.9496395
 39.7477477, -104.9486203
 39.7478467, -104.9475796
 39.7482344, -104.9465818
 39.7486138, -104.9457878
 39.7491005, -104.9454874
 39.7495789, -104.945938
 39.7500491, -104.9466998
 39.7503213, -104.9474615
 39.7505358, -104.9486954
 39.7505111, -104.950648
 39.7511215, -104.9506587
 39.7511173, -104.9527187
 39.7511091, -104.9546445
 39.7508987, -104.9565381""".trimIndent()
.split("\n")
.map{line->line.split(",").map{it.trim().toDouble()}}
.map{coords->
latLngAltitude{
latitude=coords[0]
longitude=coords[1]
altitude=0.0
}
}
valzooPolygonOptions=polygonOptions{
outerCoordinates=zooOutline
fillColor=Color.argb(70,255,255,0)
strokeColor=Color.GREEN
strokeWidth=3.0
altitudeMode=AltitudeMode.CLAMP_TO_GROUND
}
valzooPolygon=googleMap3D.addPolygon(zooPolygonOptions)
...
// Add to the onMap3DViewReady method, after the googleMap3D object has been initialized
googleMap3D.setCamera(
camera{
center=latLngAltitude{
latitude=39.748477
longitude=-104.947575
altitude=1610.0
}
heading=290.0
tilt=47.0
range=2251.0
}
)

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Last updated 2025年11月21日 UTC.