using System;

using OpenTK;
using org.budnhead.core;
using org.budnhead.graphics;

namespace bnhdemo
{
	public class CameraRotator : Actor
	{
		GLCamera camera;
		Matrix3 m3 = Matrix3.CreateRotationZ(MathHelper.PiOver2 / 45.0f);

		Vector3 p = new Vector3(400,400,256);
		Vector3 offset = new Vector3(150,0,0);
		Vector3 view = new Vector3(-1,0,-1);

		public CameraRotator(GLCamera camera)
		:base(0)
		{
			this.camera = camera;
		}

		public override void update(float timespan)
		{
			offset = m3 * offset;
			view = m3 * view;

			camera.Position = p + offset;
			camera.View = view.Normalized();
		}

	}
}