using UnityEngine;
using System.Collections.Generic;
public class PointsOnSphere : MonoBehaviour {
public GameObject prefab;
public int count = 10;
public float size = 20;
[ContextMenu("Create Points")]
void Create () {
var points = UniformPointsOnSphere(count, size);
for(var i=0; i<count; i++) {
var g = Instantiate(prefab, transform.position+points[i], Quaternion.identity) as GameObject;
g.transform.parent = transform;
}
}
Vector3[] UniformPointsOnSphere(float N, float scale) {
var points = new List<Vector3>();
var i = Mathf.PI * (3 - Mathf.Sqrt(5));
var o = 2 / N;
for(var k=0; k<N; k++) {
var y = k * o - 1 + (o / 2);
var r = Mathf.Sqrt(1 - y*y);
var phi = k * i;
points.Add(new Vector3(Mathf.Cos(phi)*r, y, Mathf.Sin(phi)*r) * scale);
}
return points.ToArray();
}
}
Tuesday, February 08, 2011
Uniform Points On a Sphere
As promised, here is my code for creating a uniform set of points on a sphere.
Subscribe to:
Post Comments (Atom)
Popular Posts
-
These are the robots I've been working on for the last 12 months. They each weigh about 11 tonnes and have a 17 meter reach. The control... -
This hard-to-see screenshot is a Generic Node Graph Editing framework I'm building. I'm hoping it can be used for any kind of node... -
So, you've created a car prefab using WheelCollider components, and now you can apply a motorTorque to make the whole thing move along. ... -
After my last post, I decided to benchmark the scaling properties of Stackless, Kamaelia, Fibra using the same hackysack algorithm. Left axi... -
It is about 8 degrees C this morning. So cold, especially when last week we had high twenties. To help solve the problem, a friend suggeste...
-
MiddleMan: A Pub/Sub and Request/Response server in Go. This is my first Go project. It is a rewrite of an existing Python server, based o...
-
Why would I ask that question? Python 3 has been available for some time now, yet uptake is slow. There aren't a whole lot of packages i...
-
I'm now using bzr instead of svn. I'm pushing my repositories to: http://exactlysimilar.org/bzr/ I'm also auto publishing docume...
-
I've just read a newspaper article (courtesy of Kranzky ) from WA Business News documenting the malfeasance, gross negligence and misc...
-
In my spare time this week, instead of building spaceships, playing games or even drinking beer... I will make a game for the Apple App Stor...
4 comments:
sounds nice - an example would be neat...
This script is designed to be used from the inspector.
Simply add the component to a game object, assign a prefab, then right click the component and click "Create Points".
Wow - that is an amazing snippet, how did you come about it.
Works great!
Works nice in C#.
Iam looking for a way to do this in JS. Please help me.
var prefab : GameObject;
var count : int= 10;
var size : float= 20;
function Start () {
var points = UniformPointsOnSphere(count, size);
for(var i=0; i<count; i++) {
var g = Instantiate(prefab, transform.position+points[i], Quaternion.identity) as GameObject;
g.transform.parent = transform;
}
}
function UniformPointsOnSphere ( N : float , scale : float ) : Vector3[] {
var points = new Array (Vector3(0, 0, 0));
var i = Mathf.PI * (3 - Mathf.Sqrt(5));
var o = 2 / N;
for(var k=0; k<N; k++) {
var y = k * o - 1 + (o / 2);
var r = Mathf.Sqrt(1 - y*y);
var phi = k * i;
points.Add(new Vector3(Mathf.Cos(phi)*r, y, Mathf.Sin(phi)*r) * scale);
}
return points.ToArray();
}
Post a Comment