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#region License

//

// The Open Toolkit Library License

//

// Copyright (c) 2006 - 2009 the Open Toolkit library.

//

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to deal

// in the Software without restriction, including without limitation the rights to 

// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of

// the Software, and to permit persons to whom the Software is furnished to do

// so, subject to the following conditions:

//

// The above copyright notice and this permission notice shall be included in all

// copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

// OTHER DEALINGS IN THE SOFTWARE.

//

#endregion

#region --- Using Directives ---

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Threading;

using OpenTK;

using OpenTK.Graphics.OpenGL;

#endregion --- Using Directives ---

namespace Examples.Tutorial

{

    [Example("Display Lists", ExampleCategory.OpenGL, "1.x", 2, Documentation="DisplayLists")]

    public class T07_Display_Lists_Flower : GameWindow

    {

        #region --- Fields ---

        const int num_lists = 13;

        int[] lists = new int[num_lists];

        #endregion

        #region --- Constructor ---

        public T07_Display_Lists_Flower()

            : base(800, 600)

        {

        }

        #endregion

        #region OnLoad

        protected override void OnLoad(EventArgs e)

        {

            GL.ClearColor(Color.MidnightBlue);

            GL.Enable(EnableCap.DepthTest);

            GL.MatrixMode(MatrixMode.Modelview);

            GL.LoadIdentity();

            // Build some display lists.

            int first_list = GL.GenLists(num_lists);

            float c = 0;

            for (int i = 0; i < num_lists; i++)

            {

                lists[i] = first_list + i;

                GL.NewList(first_list + i, ListMode.Compile);

                GL.Color3(0.3 + 0.7 * c * c, 0.3 + 1.4 * c * c, 0.7 - 0.7 * c * c);

                c += 1 / (float)num_lists;

                GL.PushMatrix();

                GL.Rotate(c * 360.0f, 0.0, 0.0, 1.0);

                GL.Translate(5.0, 0.0, 0.0);

                GL.Begin(BeginMode.Quads);

                GL.Vertex3(-1.0f, -1.0f, 1.0f);

                GL.Vertex3(1.0f, -1.0f, 1.0f);

                GL.Vertex3(1.0f, 1.0f, 1.0f);

                GL.Vertex3(-1.0f, 1.0f, 1.0f);

                GL.End();

                GL.PopMatrix();

                GL.EndList();

            }

        }

        #endregion

        #region OnUnload

        protected override void OnUnload(EventArgs e)

        {

            GL.DeleteLists(lists[0], num_lists);

        }

        #endregion

        #region OnResize

        protected override void OnResize(EventArgs e)

        {

            GL.Viewport(ClientRectangle);

            float aspect = this.ClientSize.Width / (float)this.ClientSize.Height;

                        Matrix4 projection_matrix;

                        Matrix4.CreatePerspectiveFieldOfView((float)Math.PI / 4, aspect, 1, 64, out projection_matrix);

            GL.MatrixMode(MatrixMode.Projection);

            GL.LoadMatrix(ref projection_matrix);

        }

        #endregion

        #region OnUpdateFrame

        protected override void OnUpdateFrame(FrameEventArgs e)

        {

            if (Keyboard[OpenTK.Input.Key.Escape])

            {

                this.Exit();

            }

        }

        #endregion

        #region OnRenderFrame

        protected override void OnRenderFrame(FrameEventArgs e)

        {

            Matrix4 lookat = Matrix4.LookAt(0, 0, 16, 0, 0, 0, 0, 1, 0);

            GL.MatrixMode(MatrixMode.Modelview);

            GL.LoadMatrix(ref lookat);

            GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);

            GL.CallLists(num_lists, ListNameType.Int, lists);

            SwapBuffers();

        }

        #endregion

        #region public static void Main()

        /// <summary>

        /// Entry point of this example.

        /// </summary>

        [STAThread]

        public static void Main()

        {

            using (T07_Display_Lists_Flower example = new T07_Display_Lists_Flower())

            {

                Utilities.SetWindowTitle(example);

                example.Run(30.0, 0.0);

            }

        }

        #endregion

    }

}