RhinoCommon:在球体上生成等距点

https://bduvenhage.me/geometry/2019/07/31/generating-equidistant-vectors.html

话不多说，代码如下：

using System;
using Rhino;
using Rhino.Commands;
using Rhino.Geometry;

namespace SectionGridTool.Commands
{
    [System.Runtime.InteropServices.Guid("c7c0da31-3e16-49bc-8b09-0f2c53998adf")]
    public class geoSphere : Command
    {
        static geoSphere _instance;
        public geoSphere()
        {
            _instance = this;
        }

        ///<summary>The only instance of the geoSphere command.</summary>
        public static geoSphere Instance
        {
            get { return _instance; }
        }

        public override string EnglishName
        {
            get { return "geoSphere"; }
        }

        protected override Result RunCommand(RhinoDoc doc, RunMode mode)
        {
            // TODO: complete command.
            createPoints(doc);
            return Result.Success;
        }

        private void createPoints(RhinoDoc doc)
        {
            double gr = (Math.Sqrt(5.0) + 1.0) / 2.0;  // golden ratio = 1.6180339887498948482
            double ga = (2.0 - gr) * (2.0 * Math.PI);  // golden angle = 2.39996322972865332
            int num_points = 1000;
            for (double i=1; i <= num_points; ++i) 
            {
                double lat = Math.Asin(-1.0 + 2.0 * i / (num_points+1));
                double lon = ga * i;

                double x = 10 * Math.Cos(lon) * Math.Cos(lat);
                double y = 10 * Math.Sin(lon) * Math.Cos(lat);
                double z = 10 * Math.Sin(lat);

                doc.Objects.AddPoint(new Point3d(x, y, z));
            }        
        }
    }
}