A 3D Quickhull implementation in Go.
Big thanks to @akuukka for their public domain C++ implementation which was used as a reference.
This is different from Google's S2 Geometry implementation because it works in ℝ³ instead of S².
go get -u github.com/markus-wa/quickhull-go/v2
Example with a simple, planar point-cloud.
package main
import (
"fmt"
r3 "github.com/golang/geo/r3"
quickhull "github.com/markus-wa/quickhull-go/v2"
)
func main() {
pointCloud := []r3.Vector{
{X: 1, Y: 2, Z: 1},
{X: 4, Y: 7, Z: 1},
{X: 7, Y: 2, Z: 1},
{X: 4, Y: 4, Z: 1}, // This point is inside the hull
}
hull := new(QuickHull).ConvexHull(pointCloud, true, false, 0)
fmt.Println(hull.Vertices) // does not contain (4,4,1)
fmt.Println(hull.Triangles()) // triangles that make up the convex hull - [][3]r3.Vector, where each vector is a corner of the triangle
}This project is licensed under the MIT license.
