#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2009 Nuclex Development Labs

This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.

You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion

using System;
using System.Collections.Generic;
using System.Diagnostics;

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Content;

namespace Nuclex.Graphics.SpecialEffects {

  /// <summary>Base class for objects requiring static geometry</summary>
  public class StaticMesh<VertexType> : IDisposable
    where VertexType : struct, IVertexType {

    /// <summary>Initializes a new graphics resource keeper for a static mesh</summary>
    /// <param name="graphicsDevice">Graphics device the mesh lives on</param>
    /// <param name="vertexCount">Number of vertices that will be required</param>
    protected StaticMesh(
      GraphicsDevice graphicsDevice, int vertexCount
    ) {
      this.GraphicsDevice = graphicsDevice;

      // Create a new vertex buffer with the requested size
      this.VertexBuffer = new VertexBuffer(
        graphicsDevice, typeof(VertexType), vertexCount, BufferUsage.WriteOnly
      );
    }

    /// <summary>Immediately releases all resources owned by the instance</summary>
    public virtual void Dispose() {
      if(this.VertexBuffer != null) {
        this.VertexBuffer.Dispose();
        this.VertexBuffer = null;
      }
    }

    /// <summary>Selects the static meshes' vertices for drawing</summary>
    protected virtual void Select() {
      this.GraphicsDevice.SetVertexBuffer(this.VertexBuffer);
    }

    /// <summary>Graphics device the mesh is being rendered on</summary>
    protected GraphicsDevice GraphicsDevice;
    /// <summary>Vertex buffer containing the vertices for the static mesh</summary>
    protected VertexBuffer VertexBuffer;

  }

} // namespace Nuclex.Graphics.SpecialEffects