Getting the previous index that is near a given world position, if possible, otherwise NaN.
Parameters
- world
- The world position to use in searching.
- skipUnknowns
- Should unknown values be skipped when searching.
Return Value
The found index, otherwise, -1.
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+