NewRingBuffer creates a new ring buffer with a fixed size.

ReflectFunctionName returns the fully-qualifed name of a function.

https://stackoverflow.com/questions/18390266/how-can-we-truncate-float64-type-to-a-particular-precision.

SegmentsIntersect returns true if the two line segments intersect and the intersection point, otherwise false and nils.

SlogTempLevel returns a function that resets the slog level to the previous level, pairs well with defer.

GPSPrecision0 is the precision for country or large region.

GPSPrecision1 is the precision for large city or district.

GPSPrecision2 is the precision for town or village.

GPSPrecision3 is the precision for neighborhood, street.

GPSPrecision4 is the precision for individual street, large buildings.

GPSPrecision5 is the precision for individual trees, houses.

GPSPrecision6 is the precision for individual cats.

GPSPrecision7 is the precision for practical limit of commercial surveying.

GPSPrecision8 is the precision for specialized surveying.

or 900 km/h.

or 42 km/h or 26 mph.

or 241 km/h or 150 mph.

or 50 km/h or 31 mph.

or 120 km/h or 75 mph.

or 91 km/h or 56 mph.

or 72 km/h or 45 mph.

or 16 km/h or 10 mph.

or 161 km/h or 100 mph.

or 200 km/h or 124 mph.

or 20 km/h or 12 mph.

or 8 km/h or 5 mph.

or 6.4 km/h or 4 mph.

or 4.3 km/h or 2.7 mph.

or 0.8 km/h or 0.5 mph.

or 1.8 km/h or 1.1 mph.

SlippyZoomLevel0 represents, eg.

SlippyZoomLevel10 represents, eg.

SlippyZoomLevel11 represents, eg.

SlippyZoomLevel12 represents, eg.

SlippyZoomLevel13 represents, eg.

SlippyZoomLevel14 is where houses start showing up on default maps.

SlippyZoomLevel15 represents, eg.

SlippyZoomLevel16 represents, eg.

SlippyZoomLevel17 represents, eg.

SlippyZoomLevel18 represents, eg.

SlippyZoomLevel19 represents, eg.

SlippyZoomLevel2 represents, eg.

SlippyZoomLevel20 represents, eg.

SlippyZoomLevel3 represents, eg.

SlippyZoomLevel5 represents, eg.

SlippyZoomLevel6 represents, eg.

SlippyZoomLevel7 represents, eg.

SlippyZoomLevel9 represents, eg.

or 19.3 km/h or 12 mph.

or 12 km/h or 7.5 mph or 8min/mile.

RingBuffer from https://medium.com/@nathanbcrocker/a-practical-guide-to-implementing-a-generic-ring-buffer-in-go-866d27ec1a05.