/// <summary>
/// Waits until the given object is visible.
/// </summary>
/// <param name="sceneObjects">The scene objects to check for.</param>
/// <param name="viewInfo">The view on which to check for visibility.</param>
/// <param name="cancelToken">The cancellation token.</param>
public Task WaitUntilVisibleAsync(IEnumerable <SceneObject> sceneObjects, ViewInformation viewInfo, CancellationToken cancelToken = default)
{
sceneObjects.EnsureNotNull(nameof(sceneObjects));
viewInfo.EnsureNotNull(nameof(viewInfo));
var taskComplSource = new TaskCompletionSource <object?>(TaskCreationOptions.RunContinuationsAsynchronously);
// Define the poll action (polling is done inside scene update
void PollAction()
{
if (this.AreAllObjectsVisible(sceneObjects, viewInfo))
{
taskComplSource.SetResult(null);
}
else if (cancelToken.IsCancellationRequested)
{
taskComplSource.SetCanceled();
}
else
{
_asyncInvokesBeforeUpdate.Enqueue(PollAction);
}
}
// Register first call of the polling action
_asyncInvokesBeforeUpdate.Enqueue(PollAction);
return(taskComplSource.Task);
}
/// <summary>
/// Waits until the given object is visible on the given view.
/// </summary>
/// <param name="sceneObject">The scene object to be checked.</param>
/// <param name="viewInfo">The view on which to check.</param>
/// <param name="cancelToken">The cancellation token.</param>
public Task WaitUntilVisibleAsync(SceneObject sceneObject, ViewInformation viewInfo, CancellationToken cancelToken = default)
{
sceneObject.EnsureNotNull(nameof(sceneObject));
sceneObject.EnsureNotNull(nameof(viewInfo));
return(this.WaitUntilVisibleAsync(
new[] { sceneObject },
viewInfo, cancelToken));
}
/// <summary>
/// Initializes a new instance of the <see cref="RenderState"/> class.
/// </summary>
internal RenderState(
EngineDevice device,
RenderTargets renderTargets,
Viewport viewport,
Camera3DBase camera, ViewInformation viewInformation)
: this(device)
{
this.Reset(renderTargets, viewport, camera, viewInformation);
}
/// <summary>
/// Handles mouse or pointer input from the given view.
/// </summary>
/// <param name="viewInfo">The view for which to handle input.</param>
/// <param name="inputHandlingAction">The action which reacts on input.</param>
public void HandleMouseOrPointerInput(ViewInformation viewInfo, Action <MouseOrPointerState> inputHandlingAction)
{
foreach (var actInputFame in _inputFrames)
{
foreach (var actInputState in actInputFame.TryGetStates <MouseOrPointerState>(viewInfo))
{
inputHandlingAction(actInputState);
}
}
}
/// <summary>
/// Handles keyboard input from the given view.
/// </summary>
/// <param name="viewInfo">The view for which to handle input.</param>
/// <param name="inputHandlingAction">The action which reacts on input.</param>
public void HandleKeyboardInput(ViewInformation viewInfo, Action <KeyboardState> inputHandlingAction)
{
foreach (var actInputFame in _inputFrames)
{
foreach (var actInputState in actInputFame.TryGetStates <KeyboardState>(viewInfo))
{
inputHandlingAction(actInputState);
}
}
}
/// <summary>
/// Registers the given view on this layer.
/// </summary>
internal void RegisterView(int viewIndex, ViewInformation viewInformation, ResourceDictionary resourceDictionary)
{
var newLayerViewSubset = new ViewRelatedSceneLayerSubset(this, viewInformation, resourceDictionary, viewIndex);
_viewSubsets.AddObject(
newLayerViewSubset,
viewIndex);
newLayerViewSubset.RegisterObjectRange(this.ObjectsInternal);
}
/// <summary>
/// Registers the given view on this scene object.
/// This method is meant to be called by RenderLoop class.
/// </summary>
/// <param name="viewInformation">The view to register.</param>
internal void RegisterView(ViewInformation viewInformation)
{
viewInformation.EnsureNotNull(nameof(viewInformation));
var isFirstView = _registeredViews.Count == 0;
this.InitializeResourceDictionaries();
// Register device on this scene if not done before
// -> This registration is forever, no deregister is made!
var givenDevice = viewInformation.Device;
var resourceDictionary = _registeredResourceDicts[givenDevice !.DeviceIndex];
/// <summary>
/// Ares all given scene objects visible currently?
/// </summary>
/// <param name="sceneObjects">The scene objects.</param>
/// <param name="viewInfo">The view information.</param>
public bool AreAllObjectsVisible(IEnumerable <SceneObject> sceneObjects, ViewInformation viewInfo)
{
sceneObjects.EnsureNotNull(nameof(sceneObjects));
viewInfo.EnsureNotNull(nameof(viewInfo));
foreach (var actObject in sceneObjects)
{
if (!actObject.IsVisible(viewInfo))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Deregisters the given view on this layer.
/// </summary>
/// <param name="viewIndex">The index which this view has on the current scene.</param>
/// <param name="viewInformation">The ViewInformation object describing the view.</param>
internal void DeregisterView(int viewIndex, ViewInformation viewInformation)
{
// Dispose the layer subset (removes all its resources)
var viewSubset = _viewSubsets[viewIndex];
if (viewSubset != null)
{
viewSubset.ClearAllSubscriptions(this.ObjectsInternal);
viewSubset.Dispose();
}
// Remote the subset
_viewSubsets.RemoveObject(viewIndex);
}
/// <summary>
/// Initializes a new instance of the <see cref="ViewRelatedSceneLayerSubset" /> class.
/// </summary>
internal ViewRelatedSceneLayerSubset(SceneLayer sceneLayer, ViewInformation viewInformation, ResourceDictionary resources, int viewIndex)
{
_scene = sceneLayer.Scene;
_sceneLayer = sceneLayer;
this.ViewInformation = viewInformation;
_device = this.ViewInformation.Device !;
_resources = resources;
ViewIndex = viewIndex;
_invalidObjects = new Dictionary <SceneObject, object?>();
_invalidObjectsToDeregister = new Queue <SceneObject>();
// Create temporary collections
_tmpChangedVisibilities = new List <Tuple <SceneObject, bool, bool> >();
// Create all specialized render pass lists
_objectsPassPlainRender = new PassSubscriptionProperties();
_objectsPassLineRender = new PassSubscriptionProperties();
_objectsPassTransparentRender = new PassSubscriptionProperties();
_objectsPassSpriteBatchRender = new PassSubscriptionProperties();
_objectsPass2DOverlay = new PassSubscriptionProperties();
// Create dictionary for fast access to all render pass list
_objectsPerPassDict = new Dictionary <RenderPassInfo, PassSubscriptionProperties>
{
[RenderPassInfo.PASS_PLAIN_RENDER] = _objectsPassPlainRender,
[RenderPassInfo.PASS_LINE_RENDER] = _objectsPassLineRender,
[RenderPassInfo.PASS_TRANSPARENT_RENDER] = _objectsPassTransparentRender,
[RenderPassInfo.PASS_SPRITE_BATCH] = _objectsPassSpriteBatchRender,
[RenderPassInfo.PASS_2D_OVERLAY] = _objectsPass2DOverlay
};
_objectsPerPass = new List <PassSubscriptionProperties>(_objectsPerPassDict.Values);
_anythingUnsubscribed = false;
// Create and load all render pass relevant resources
this.RefreshDeviceDependentResources();
}
/// <summary>
/// Picks an object in 3D space.
/// </summary>
internal List <SceneObject> Pick(Vector3 rayStart, Vector3 rayDirection, ViewInformation viewInformation, PickingOptions pickingOptions)
{
rayDirection.EnsureNormalized(nameof(rayDirection));
viewInformation.EnsureNotNull(nameof(viewInformation));
pickingOptions.EnsureNotNull(nameof(pickingOptions));
// Query for all objects below the cursor
var pickedObjects = new List <Tuple <SceneObject, float> >();
foreach (var actLayer in _sceneLayers)
{
foreach (var actObject in actLayer.Objects)
{
if (!actObject.IsVisible(viewInformation))
{
continue;
}
if (!actObject.IsPickingTestVisible)
{
continue;
}
var actDistance = actObject.Pick(rayStart, rayDirection, viewInformation, pickingOptions);
if (!float.IsNaN(actDistance))
{
pickedObjects.Add(Tuple.Create(actObject, actDistance));
}
}
}
// Return all picked object in correct order
return(pickedObjects
.OrderBy(actObject => actObject.Item2)
.Convert(actObject => actObject.Item1)
.ToList());
}
/// <summary>
/// Tries to get the bounding box for the given render-loop.
/// Returns BoundingBox.Empty if it is not available.
/// </summary>
/// <param name="viewInfo">The ViewInformation for which to get the BoundingBox.</param>
public override BoundingBox TryGetBoundingBox(ViewInformation viewInfo)
{
return(default);
/// <summary>
/// Sets some informational data telling the filter where it is used.
/// </summary>
/// <param name="layerToFilter">The SceneLayer that gets filtered.</param>
/// <param name="viewInformation">The information object of the corresponding view.</param>
public virtual void SetEnvironmentData(SceneLayer layerToFilter, ViewInformation viewInformation)
{
}
/// <summary> /// Checks for visibility of the given object. /// </summary> /// <param name="input">The object to be checked..</param> /// <param name="viewInformation">A reference to the view on which to check for visibility.</param> public abstract bool IsObjectVisible(SceneObject input, ViewInformation viewInformation);
