protected override void Initialise()
{
Camera3D camera = new Xen.Camera.FirstPersonControlledCamera3D(this.UpdateManager, Vector3.Zero,true);
//create the draw target.
drawToScreen = new DrawTargetScreen(camera);
drawToScreen.ClearBuffer.ClearColour = Color.CornflowerBlue;
//NEW CODE
//create a BatchModel, this class stores the ModelData and will draw BatchModelInstances
this.batchModel = new BatchModel();
//this.batchModel.ShaderProvider = new SimpleShaderProvider<Tutorial_16.Shader.Tutorial16>();
//NEW CODE
//create a large number of actors (1600)
for (float x = -20; x < 20; x++)
for (float y = -20; y < 20; y++)
{
drawToScreen.Add(new Actor(this.batchModel, new Vector3(x * 5, y * 5, -5)));
}
//this is the most important bit...
//always add the BatchModel itself to the draw target,
//this should be added *after* all BatchModelInstances have been added
//Note: each time a BatchModelInstance is drawn, it will store it's world matrix in the BatchModel
//If the BatchModel is not drawn, the buffer storing these matrices will not be emptied, and will
//eventually throw an OutOfMemoryException exception.
this.drawToScreen.Add(batchModel);
statistics = new Xen.Ex.Graphics2D.Statistics.DrawStatisticsDisplay(this.UpdateManager);
this.drawToScreen.Add(statistics);
}
/// <summary>
/// Construct the batch model instance
/// </summary>
/// <param name="model">The BatchModel that will draw this instance</param>
public BatchModelInstance(BatchModel model)
{
if (model == null)
{
throw new ArgumentNullException();
}
this.parent = model;
this.parent.CountChild();
}
public Actor(BatchModel model, Vector3 position)
{
this.instance = new BatchModelInstance(model);
this.worldMatrix = Matrix.CreateTranslation(position);
}
/// <summary>
/// Construct the batch model instance
/// </summary>
/// <param name="model">The BatchModel that will draw this instance</param>
public BatchModelInstance(BatchModel model)
{
if (model == null)
throw new ArgumentNullException();
this.parent = model;
this.parent.CountChild();
}
