/// <summary>
/// Overridden. Creats a scene graph with a <see cref="PCacheCamera">PCacheCamera</see>
/// as the main camera.
/// </summary>
protected override PCamera CreateBasicScenegraph() {
PRoot r = new PRoot();
PLayer l = new PLayer();
PCamera c = new PCacheCamera();
r.AddChild(c);
r.AddChild(l);
c.AddLayer(l);
return c;
}
/// <summary>
/// Animate the camera's view matrix from its current value when the activity starts
/// to the new destination matrix value.
/// </summary>
/// <param name="destination">The final matrix value.</param>
/// <param name="duration">The amount of time that the animation should take.</param>
/// <returns>
/// The newly scheduled activity, if the duration is greater than 0; else null.
/// </returns>
public virtual PTransformActivity AnimateViewToMatrix(PMatrix destination, long duration)
{
if (duration == 0)
{
ViewMatrix = destination;
return(null);
}
PTransformActivity ta = new PTransformActivity(duration, PUtil.DEFAULT_ACTIVITY_STEP_RATE, new PCameraTransformTarget(this), destination);
PRoot r = Root;
if (r != null)
{
r.AddActivity(ta);
}
return(ta);
}
/// <summary>
/// Creates a basic PiccoloDirect3D scene graph.
/// </summary>
/// <returns>The main camera node in the new scene graph.</returns>
/// <remarks>
/// The scene graph will consist of root node with two children, a layer and a
/// camera. Additionally, The camera will be set to view the layer. Typically,
/// you will want to add new nodes to the layer.
/// </remarks>
public static P3Camera CreateBasicScenegraph() {
PRoot r = new PRoot();
PLayer l = new PLayer();
P3Camera c = new P3Camera();
r.AddChild(c);
r.AddChild(l);
c.AddLayer(l);
return c;
}
/// <summary>
/// Constructs a new PActivityScheduler.
/// </summary>
/// <param name="rootNode">The root node to associate with this activity scheduler.</param>
public PActivityScheduler(PRoot rootNode) {
root = rootNode;
activities = new PActivityList();
processingActivities = new PActivityList();
}
/// <summary>
/// Installs the scroll director and adds the appropriate handlers.
/// </summary>
/// <param name="scrollableControl">
/// The scrollable control on which this director directs.
/// </param>
/// <param name="view">The PCanvas that the scrollable control scrolls.</param>
public virtual void Install(PScrollableControl scrollableControl, PCanvas view) {
this.scrollableControl = scrollableControl;
this.view = view;
if (view != null) {
this.camera = view.Camera;
this.root = view.Root;
}
if (camera != null) {
camera.ViewTransformChanged += new PPropertyEventHandler(camera_ViewTransformChanged);
camera.BoundsChanged += new PPropertyEventHandler(camera_BoundsChanged);
camera.FullBoundsChanged += new PPropertyEventHandler(camera_FullBoundsChanged);
}
if (root != null) {
root.BoundsChanged += new PPropertyEventHandler(root_BoundsChanged);
root.FullBoundsChanged += new PPropertyEventHandler(root_FullBoundsChanged);
}
if (scrollableControl != null) {
scrollableControl.UpdateScrollbars();
}
}
/// <summary>
/// Uninstalls the scroll director from the scrollable control.
/// </summary>
public virtual void UnInstall() {
scrollableControl = null;
view = null;
if (camera != null) {
camera.ViewTransformChanged -= new PPropertyEventHandler(camera_ViewTransformChanged);
camera.BoundsChanged -= new PPropertyEventHandler(camera_BoundsChanged);
camera.FullBoundsChanged -= new PPropertyEventHandler(camera_FullBoundsChanged);
}
if (root != null) {
root.BoundsChanged -= new PPropertyEventHandler(root_BoundsChanged);
root.FullBoundsChanged -= new PPropertyEventHandler(root_FullBoundsChanged);
}
camera = null;
root = null;
}
