using System;
using OpenTK.Graphics.OpenGL;
namespace RecrownedGTK.Graphics {
    public class VertexArrayHandle : IDisposable {
        private bool disposed;
        private int handle;
        private bool begun;
        public VertexArrayHandle() {
            handle = GL.GenVertexArray();
        }

        public void Begin() {
            if (begun) throw new InvalidOperationException("The VertexArrayHandle has already been started.");
            GL.BindVertexArray(handle);
            begun = true;
        }
        public void End() {
            if (!begun) throw new InvalidOperationException("The VertexArrayHandle has never been started.");
            GL.BindVertexArray(0);
            begun = false;
        }
        public void Dispose() {
            Dispose(true);
            GC.SuppressFinalize(this);
        }
        protected virtual void Dispose(bool disposing) {
            if (disposed) return;
            if (disposing) {

            }
            GL.BindVertexArray(0);
            GL.DeleteVertexArray(handle);
            disposed = true;
        }
        ~VertexArrayHandle() {
            Dispose(false);
        }
    }
}