FibonacciSphere in Unity3D

Fibonacci.cs

using System.Collections.Generic;
using UnityEngine;

public static class Fibonacci
{
    private static Dictionary<int, Vector3[]> fibonacciSphereCache = new Dictionary<int, Vector3[]>();

    public static Vector3[] FibonacciSphere(int samples)
    {
        if (fibonacciSphereCache.ContainsKey(samples))
        {
            return fibonacciSphereCache[samples];
        }

        var points = new Vector3[samples];
        var phi = Mathf.PI * (3.0f - Mathf.Sqrt(5.0f)); // golden angle in radians

        for (int i = 0; i < samples; i++)
        {
            var y = 1 - (i / (float)(samples - 1)) * 2; // y goes from 1 to -1
            var radius = Mathf.Sqrt(1 - y * y); // radius at y

            var theta = phi * i; // golden angle increment

            var x = Mathf.Cos(theta) * radius;
            var z = Mathf.Sin(theta) * radius;

            points[i] = new Vector3(x, y, z);
        }

        fibonacciSphereCache[samples] = points;

        return points;
    }

}