using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using D3D = Microsoft.DirectX.Direct3D;
using DX = Microsoft.DirectX;

namespace Nuclex.Opal.SimpleExample {

public partial class RenderWindow : Direct3DForm {

  public RenderWindow() {
    InitializeComponent();
    m_attachedEntities = new List<Entity>();
  }

  private void SetupCamera() {
    d3dDevice.Transform.View = DX.Matrix.LookAtLeftHanded(
      new DX.Vector3(0, 10, -50),
      new DX.Vector3(),
      new DX.Vector3(0, 50, 10)
    );

    d3dDevice.Transform.Projection = DX.Matrix.PerspectiveFieldOfViewLeftHanded(
      (float)System.Math.PI / 4,
      (float)this.ClientSize.Width / this.ClientSize.Height,
      1.0f,
      100.0f
    );
  }

  protected override void OnRender(EventArgs e) {
    Render();
  }

  private void SetupLights() {
    d3dDevice.Lights[0].LightType = D3D.LightType.Directional;
    d3dDevice.Lights[0].Direction = new DX.Vector3(0, -3, 5);
    d3dDevice.Lights[0].Diffuse = Color.White;
    d3dDevice.Lights[0].Enabled = true;
  }

  public void Render() {
    SetupLights();
    SetupCamera();
/*  
    d3dDevice.Clear(
      D3D.ClearFlags.Target | D3D.ClearFlags.ZBuffer, Color.BlueViolet, 1, 0
    );
    d3dDevice.BeginScene();
 */
    SetupLights();
    d3dDevice.Lights[0].Update();

    foreach(Entity entity in m_attachedEntities)
      entity.Render();
/*
    d3dDevice.EndScene();
    d3dDevice.Present();
*/ 
  }

  private void keyPressed(object sender, KeyPressEventArgs e) {
    if(e.KeyChar == ' ')
      m_spacePressed = true;
  }

  public bool WasSpacePressed() {
    if(m_spacePressed) {
      m_spacePressed = false;
      return true;
    }

    return false;
  }

  public void AddEntity(Solid solid) {
    m_attachedEntities.Add(new Entity(d3dDevice, solid));
  }

  private bool m_spacePressed;
  private List<Entity> m_attachedEntities;

  private void resized(object sender, EventArgs e) {
/*  
    presentParams.BackBufferWidth = ClientSize.Width;
    presentParams.BackBufferWidth = ClientSize.Height;
    
    D3D.DisplayMode displayMode = m_D3DDevice.DisplayMode;
    displayMode.Width = ClientSize.Width;
    displayMode.Height = ClientSize.Height;
    //m_D3DDevice.DisplayMode = displayMode;
    
    D3D.Viewport viewPort = m_D3DDevice.Viewport;
    viewPort.Width = ClientSize.Width;
    viewPort.Height = ClientSize.Height;
    m_D3DDevice.Viewport = viewPort;
    m_D3DDevice.Reset(presentParams);
*/
  }

}

} // Nuclex.Opal.SimpleExample