geospatial

Aerospike Geospatial

Import path: github.com/InsideGallery/core/db/aerospike/geospatial

This package provides small helpers for Aerospike-compatible GeoJSON strings and three-dimensional point math.

Main APIs

• GeoPoint models a GeoJSON point with type and coordinates fields.
• GeoPoint.GetPoint converts a GeoPoint to Point.
• Vector is the coordinate-reading interface used by point math.
• Point stores up to three coordinates.
• NewPoint, Coordinate, and Coordinates create and inspect points.
• Dot, Normal, NormalSquare, DistanceSquare, and Distance perform vector math.
• PointStr(lat, lon) formats a GeoJSON point string.
• PolygonStr(points...) formats a GeoJSON polygon string from coordinate slices.
• FloatPrecision and FloatBitSize control float formatting; current output uses 8 decimal places.

Usage

package example

import "github.com/InsideGallery/core/db/aerospike/geospatial"

func geoValues() (string, string, float64) {
	point := geospatial.PointStr(15.123456789, 12.2)
	polygon := geospatial.PolygonStr(
		[]float64{0, 0},
		[]float64{0, 10},
		[]float64{10, 10},
		[]float64{10, 0},
		[]float64{0, 0},
	)
	distance := geospatial.NewPoint(0, 0).Distance(geospatial.NewPoint(3, 4))

	return point, polygon, distance
}

PointStr takes latitude first and longitude second, then writes GeoJSON coordinates as [lon,lat]. PolygonStr writes points exactly as supplied; the caller is responsible for closing the polygon ring when needed.

Operational Notes

The package does not open Aerospike connections and does not validate GeoJSON geometry. NewPoint fills missing dimensions with zero, ignores dimensions after the third, and Coordinate returns zero for indexes outside 0..2.