go-geo-3d

---

go-geo-3d is a module with zero dependencies to calculate distances of 3d geospatial points.

Installation

go get github.com/emanuelef/go-geo-3d

Example

package main

import (
	"fmt"

	geo "github.com/emanuelef/go-geo-3d"
)

func main() {
	// Coordinates are in degrees and altitude in metres
	start := geo.NewCoord3d(51.39674, -0.36148, 1104.9)
	end := geo.NewCoord3d(51.38463, -0.36819, 1219.2)

	// Distance in metres between two 3D coordinates
	distance := geo.Distance3D(start, end)

	fmt.Printf("Distance 3D line from start to end: %.3fm\n", distance)

	posA := geo.NewCoord3d(51.3909, -0.364, 15)
	// Minimum distance in metres from one 3D point to a line in 3D coordinates
	minPoint, _ := posA.ClosestPointOnLine(start, end)
        // Lat: 51.39181 Lon: -0.36421 Alt: 1151.37514

	distance = geo.Distance3D(posA, minPoint)

	fmt.Printf("Distance from one point to a line: %.3fm\n", distance)
}