/// <summary>
/// Add the layer at the given index in this camera's list of layers. Layers
/// may be viewed by multiple cameras at once.
/// </summary>
/// <param name="index">The index at which to add the layer.</param>
/// <param name="layer">The layer to add to this camera.</param>
public virtual void AddLayer(int index, PLayer layer)
{
layers.Insert(index, layer);
layer.AddCamera(this);
InvalidatePaint();
FirePropertyChangedEvent(PROPERTY_KEY_LAYERS, PROPERTY_CODE_LAYERS, null, layers);
}
/// <summary>
/// Remove the layer at the given index from the list of layers managed by this
/// camera.
/// </summary>
/// <param name="index">The index of the layer to remove.</param>
/// <returns>The removed layer.</returns>
public virtual PLayer RemoveLayer(int index)
{
PLayer layer = layers[index];
layers.RemoveAt(index);
layer.RemoveCamera(this);
InvalidatePaint();
FirePropertyChangedEvent(PROPERTY_KEY_LAYERS, PROPERTY_CODE_LAYERS, null, layers);
return(layer);
}
/// <summary>
/// Pick all the layers that the camera is looking at.
/// </summary>
/// <param name="pickPath">The pick path to use for the pick operation.</param>
/// <returns>
/// True if an object viewed by the camera was picked; else false.
/// </returns>
/// <remarks>
/// This method is only called when the camera's view matrix and clip are
/// applied to the pickPath.
/// </remarks>
protected virtual bool PickCameraView(PPickPath pickPath)
{
int count = LayerCount;
for (int i = count - 1; i >= 0; i--)
{
PLayer each = layers[i];
if (each.FullPick(pickPath))
{
return(true);
}
}
return(false);
}
//****************************************************************
// Serialization - Cameras conditionally serialize their layers.
// This means that only the layer references that were unconditionally
// (using GetObjectData) serialized by someone else will be restored
// when the camera is deserialized.
//****************************************************************/
/// <summary>
/// Read this this camera and all its children from the given SerializationInfo.
/// </summary>
/// <param name="info">The SerializationInfo to read from.</param>
/// <param name="context">
/// The StreamingContext of this serialization operation.
/// </param>
/// <remarks>
/// This constructor is required for Deserialization.
/// </remarks>
protected PCamera(SerializationInfo info, StreamingContext context)
: base(info, context)
{
layers = new PLayerList();
int count = info.GetInt32("layerCount");
for (int i = 0; i < count; i++)
{
PLayer layer = (PLayer)info.GetValue("layer" + i, typeof(PLayer));
if (layer != null)
{
layers.Add(layer);
}
}
canvas = (PCanvas)info.GetValue("canvas", typeof(PCanvas));
}
/// <summary>
/// Remove the given layer from the list of layers managed by this camera.
/// </summary>
/// <param name="layer">The layer to remove.</param>
/// <returns>The removed layer.</returns>
public virtual PLayer RemoveLayer(PLayer layer)
{
return(RemoveLayer(layers.IndexOf(layer)));
}
/// <summary>
/// Add the layer to the end of this camera's list of layers. Layers may be
/// viewed by multiple cameras at once.
/// </summary>
/// <param name="layer">The layer to add to this camera.</param>
public virtual void AddLayer(PLayer layer)
{
AddLayer(LayerCount, layer);
}
/// <summary>
/// Return the index where the given layer is stored.
/// </summary>
/// <param name="layer">The layer whose index is desired.</param>
/// <returns>The index where the given layer is stored.</returns>
public virtual int IndexOfLayer(PLayer layer)
{
return(layers.IndexOf(layer));
}