[wyliec]

The pin gets rendered in a 3D scene, and positioned via finding the difference between your current coordinates and the pins. The building stuff is so that people cannot see a pin when there should be a building in the way. I do this by using computer vision that analyses the map imagery.

[mendeza]

Oh, that makes sense, but how do you render the pin in 3D when you see the pin in Augmented Reality. I see your screenshots where you see the pin on google maps and the pin when you view it I augmented reality.

[wyliec]

It's a mimic - there isn't a method in apple maps that render it. I made the 3D versions myself. I use scene libraries that overlay the camera view (that is basically what AR is).