/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem currentCoordinateSystem = referenceFrame.CoordinateSystem;
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem currentCoordinateSystem = referenceFrame.CoordinateSystem;
SpatialPointerPose pose = SpatialPointerPose.TryGetAtTimestamp(currentCoordinateSystem, prediction.Timestamp);
ProcessFrame(currentCoordinateSystem);
if (Utils.GetCurrentUnixTimestampMillis() - lastFaceDetectedTimestamp > faceTimeThreshold)
{
if(pose != null)
{
var headPosition = pose.Head.Position;
var headForward = pose.Head.ForwardDirection;
quadRenderer.TargetPosition = headPosition + (2.0f * headForward);
}
textRenderer.RenderTextOffscreen("No faces detected");
}
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
quadRenderer.Update(pose, timer);
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera.
// You should set the focus point near the content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram,
// since that is the only hologram available for the user to focus on.
// You can also set the relative velocity and facing of that content; the sample
// hologram is at a fixed point so we only need to indicate its position.
if(Utils.GetCurrentUnixTimestampMillis() - lastFaceDetectedTimestamp <= faceTimeThreshold)
{
renderingParameters.SetFocusPoint(
currentCoordinateSystem,
quadRenderer.Position,
quadRenderer.Forward,
quadRenderer.Velocity
);
}
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return holographicFrame;
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
#if DRAW_SAMPLE_CONTENT
if (stationaryReferenceFrame != null)
{
// Check for new input state since the last frame.
for (int i = 0; i < gamepads.Count; ++i)
{
bool buttonDownThisUpdate = (gamepads[i].gamepad.GetCurrentReading().Buttons & GamepadButtons.A) == GamepadButtons.A;
if (buttonDownThisUpdate && !gamepads[i].buttonAWasPressedLastFrame)
{
pointerPressed = true;
}
gamepads[i].buttonAWasPressedLastFrame = buttonDownThisUpdate;
}
SpatialInteractionSourceState pointerState = spatialInputHandler.CheckForInput();
SpatialPointerPose pose = null;
if (null != pointerState)
{
pose = pointerState.TryGetPointerPose(stationaryReferenceFrame.CoordinateSystem);
}
else if (pointerPressed)
{
pose = SpatialPointerPose.TryGetAtTimestamp(stationaryReferenceFrame.CoordinateSystem, prediction.Timestamp);
}
pointerPressed = false;
// When a Pressed gesture is detected, the sample hologram will be repositioned
// two meters in front of the user.
spinningCubeRenderer.PositionHologram(pose);
}
#endif
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
#if DRAW_SAMPLE_CONTENT
spinningCubeRenderer.Update(timer);
#endif
});
if (!canCommitDirect3D11DepthBuffer)
{
// On versions of the platform that do not support the CommitDirect3D11DepthBuffer API, we can control
// image stabilization by setting a focus point with optional plane normal and velocity.
foreach (var cameraPose in prediction.CameraPoses)
{
#if DRAW_SAMPLE_CONTENT
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera. When setting the focus point, put it on or
// near content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram.
// You can also set the relative velocity and facing of the stabilization
// plane using overloads of this method.
if (stationaryReferenceFrame != null)
{
renderingParameters.SetFocusPoint(
stationaryReferenceFrame.CoordinateSystem,
spinningCubeRenderer.Position
);
}
#endif
}
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
void StartInputLoop()
{
// If the animation render loop is already running then do not start another thread.
if (m_inputLoopWorker != null)
{
if (m_inputLoopWorker.Status == AsyncStatus.Started)
{
return;
}
else
{
m_inputLoopWorker.Close();
}
}
workItemHandler = new WorkItemHandler((IAsyncAction action) =>
{
while (action.Status == AsyncStatus.Started)
{
var gamepads = Gamepad.Gamepads;
if (gamepads.Count > 0 && activeGamePad == null)
{
// Get the Zero based first Gamepad
activeGamePad = gamepads[0];
}
if (activeGamePad != null)
{
timer.Tick(() =>
{
GamepadReading reading = activeGamePad.GetCurrentReading();
double deltax;
if (reading.LeftThumbstickX > THUMBSTICK_DEADZONE || reading.LeftThumbstickX < -THUMBSTICK_DEADZONE)
{
deltax = reading.LeftThumbstickX * reading.LeftThumbstickX * reading.LeftThumbstickX;
}
else
{
deltax = 0.0f;
}
double deltay;
if (reading.LeftThumbstickY > THUMBSTICK_DEADZONE || reading.LeftThumbstickY < -THUMBSTICK_DEADZONE)
{
deltay = reading.LeftThumbstickY * reading.LeftThumbstickY * reading.LeftThumbstickY;
}
else
{
deltay = 0.0f;
}
double rotationX = deltax * rotationdelta;
double rotationY = deltay * rotationdelta;
pitch += rotationY;
heading += rotationX;
// Limit pitch to straight up or straight down.
videoProjection.ViewOrientation = Helpers.CreateFromHeadingPitchRoll(heading, pitch, 0);
});
}
}
});
m_inputLoopWorker = ThreadPool.RunAsync(workItemHandler, WorkItemPriority.High, WorkItemOptions.None);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem currentCoordinateSystem = referenceFrame.CoordinateSystem;
#if DRAW_SAMPLE_CONTENT
// Check for new input state since the last frame.
SpatialInteractionSourceState pointerState = spatialInputHandler.CheckForInput();
if (null != pointerState)
{
// When a Pressed gesture is detected, the sample hologram will be repositioned
// two meters in front of the user.
spinningCubeRenderer.PositionHologram(
pointerState.TryGetPointerPose(currentCoordinateSystem)
);
}
#endif
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
#if DRAW_SAMPLE_CONTENT
spinningCubeRenderer.Update(timer);
_spatialSurfaceRenderer.Update();
#endif
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
#if DRAW_SAMPLE_CONTENT
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera.
// You should set the focus point near the content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram,
// since that is the only hologram available for the user to focus on.
// You can also set the relative velocity and facing of that content; the sample
// hologram is at a fixed point so we only need to indicate its position.
renderingParameters.SetFocusPoint(
currentCoordinateSystem,
spinningCubeRenderer.Position
);
#endif
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update(HolographicFrame previousFrame)
{
// TODO: Put CPU work that does not depend on the HolographicCameraPose here.
// Apps should wait for the optimal time to begin pose-dependent work.
// The platform will automatically adjust the wakeup time to get
// the lowest possible latency at high frame rates. For manual
// control over latency, use the WaitForNextFrameReadyWithHeadStart
// API.
// WaitForNextFrameReady and WaitForNextFrameReadyWithHeadStart are the
// preferred frame synchronization APIs for Windows Mixed Reality. When
// running on older versions of the OS that do not include support for
// these APIs, your app can use the WaitForFrameToFinish API for similar
// (but not as optimal) behavior.
if (canUseWaitForNextFrameReadyAPI)
{
try
{
holographicSpace.WaitForNextFrameReady();
}
catch (NotImplementedException)
{
// Catch a specific case where WaitForNextFrameReady() is present but not implemented
// and default back to WaitForFrameToFinish() in that case.
canUseWaitForNextFrameReadyAPI = false;
}
}
else if (previousFrame != null)
{
previousFrame.WaitForFrameToFinish();
}
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
#if DRAW_SAMPLE_CONTENT
if (stationaryReferenceFrame != null)
{
// Check for new input state since the last frame.
for (int i = 0; i < gamepads.Count; ++i)
{
bool buttonDownThisUpdate = (gamepads[i].gamepad.GetCurrentReading().Buttons & GamepadButtons.A) == GamepadButtons.A;
if (buttonDownThisUpdate && !gamepads[i].buttonAWasPressedLastFrame)
{
pointerPressed = true;
}
gamepads[i].buttonAWasPressedLastFrame = buttonDownThisUpdate;
}
SpatialInteractionSourceState pointerState = spatialInputHandler.CheckForInput();
SpatialPointerPose pose = null;
if (null != pointerState)
{
pose = pointerState.TryGetPointerPose(stationaryReferenceFrame.CoordinateSystem);
}
else if (pointerPressed)
{
pose = SpatialPointerPose.TryGetAtTimestamp(stationaryReferenceFrame.CoordinateSystem, prediction.Timestamp);
}
pointerPressed = false;
// When a Pressed gesture is detected, the sample hologram will be repositioned
// two meters in front of the user.
quadRendererR.PositionHologram(pose);
quadRendererL.PositionHologram(pose);
}
#endif
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
#if DRAW_SAMPLE_CONTENT
quadRendererR.Update(timer);
quadRendererL.Update(timer);
#endif
});
// On HoloLens 2, the platform can achieve better image stabilization results if it has
// a stabilization plane and a depth buffer.
// Note that the SetFocusPoint API includes an override which takes velocity as a
// parameter. This is recommended for stabilizing holograms in motion.
foreach (var cameraPose in prediction.CameraPoses)
{
#if DRAW_SAMPLE_CONTENT
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera. When setting the focus point, put it on or
// near content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram.
// You can also set the relative velocity and facing of the stabilization
// plane using overloads of this method.
if (stationaryReferenceFrame != null)
{
renderingParameters.SetFocusPoint(
stationaryReferenceFrame.CoordinateSystem,
new System.Numerics.Vector3(0, 0, 0)
);
}
#endif
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
if (MediaPlayer.IsEndOfStream)
{
ViewManagement.SwitchTo2DViewAsync();
}
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem currentCoordinateSystem = referenceFrame.CoordinateSystem;
var gestureStatus = spatialInputHandler.CheckGestureStatus();
switch (gestureStatus)
{
case SpatialGestureSettings.None:
break;
case SpatialGestureSettings.Tap:
videoRenderer.Pause();
break;
case SpatialGestureSettings.DoubleTap:
videoRenderer.Stop();
ViewManagement.SwitchTo2DViewAsync();
break;
case SpatialGestureSettings.Hold:
videoRenderer.FastForward(spatialInputHandler.HoldTotalTime.TotalSeconds);
break;
case SpatialGestureSettings.ManipulationTranslate:
break;
case SpatialGestureSettings.NavigationX:
break;
case SpatialGestureSettings.NavigationY:
break;
case SpatialGestureSettings.NavigationZ:
break;
case SpatialGestureSettings.NavigationRailsX:
break;
case SpatialGestureSettings.NavigationRailsY:
break;
case SpatialGestureSettings.NavigationRailsZ:
break;
default:
break;
}
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
videoRenderer.Update(timer);
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera.
// You should set the focus point near the content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram,
// since that is the only hologram available for the user to focus on.
// You can also set the relative velocity and facing of that content; the sample
// hologram is at a fixed point so we only need to indicate its position.
renderingParameters.SetFocusPoint(
currentCoordinateSystem,
videoRenderer.Position
);
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
public void Update()
{
_timer.Tick(() => _sceneRenderer.Update(ref _timer));
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem currentCoordinateSystem = attachreferenceFrame.GetStationaryCoordinateSystemAtTimestamp(prediction.Timestamp);//referenceFrame.CoordinateSystem;
#if DRAW_SAMPLE_CONTENT
// Check for new input state since the last frame.
SpatialInteractionSourceState pointerState = spatialInputHandler.CheckForInput();
if (null != pointerState)
{
// When a Pressed gesture is detected, the sample hologram will be repositioned
// two meters in front of the user.
spinningCubeRenderer.PositionHologram(
// pointerState.TryGetPointerPose(currentCoordinateSystem)
SpatialPointerPose.TryGetAtTimestamp(currentCoordinateSystem, prediction.Timestamp)
);
}
//var downstate = Windows.UI.Core.CoreVirtualKeyStates.Down;
//bool rightclick = (Windows.UI.Core.CoreWindow.GetForCurrentThread().GetKeyState(Windows.System.VirtualKey.Escape) & downstate) == downstate;
//System.Diagnostics.Debug.WriteLine("Windows.System.VirtualKey.Escape " + Windows.UI.Core.CoreWindow.GetForCurrentThread().GetKeyState(Windows.System.VirtualKey.Escape).ToString() + " downstate" + downstate);
//System.Diagnostics.Debug.WriteLine("Windows.System.VirtualKey.A " + Windows.UI.Core.CoreWindow.GetForCurrentThread().GetKeyState(Windows.System.VirtualKey.A).ToString() + " downstate" + downstate);
//if (rightclick)
//{
// Windows.UI.ViewManagement.ApplicationViewSwitcher.SwitchAsync(VideoGallery.mainId, VideoGallery.appId, Windows.UI.ViewManagement.ApplicationViewSwitchingOptions.ConsolidateViews);
//}
#endif
timer.Tick(() =>
{
//
// TODO: Update scene objects.
//
// Put time-based updates here. By default this code will run once per frame,
// but if you change the StepTimer to use a fixed time step this code will
// run as many times as needed to get to the current step.
//
#if DRAW_SAMPLE_CONTENT
spinningCubeRenderer.Update(timer);
#endif
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
#if DRAW_SAMPLE_CONTENT
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera.
// You should set the focus point near the content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram,
// since that is the only hologram available for the user to focus on.
// You can also set the relative velocity and facing of that content; the sample
// hologram is at a fixed point so we only need to indicate its position.
Vector3 position = new Vector3(0.0f, 0.0f, -3.0f);
renderingParameters.SetFocusPoint(
currentCoordinateSystem, position
/*spinningCubeRenderer.Position*/
);
#endif
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem referenceFrameCoordinateSystem = referenceFrame.GetStationaryCoordinateSystemAtTimestamp(prediction.Timestamp);
// remember where we were (changed if the CurrentNode != previousNode)
var previousNode = CurrentNode;
// update current node the user resides in
CurrentNode = UpdateCurrentNode(referenceFrameCoordinateSystem, prediction.Timestamp, NodeRadius);
// .. and current gaze
SpatialPointerPose pose = SpatialPointerPose.TryGetAtTimestamp(referenceFrameCoordinateSystem, prediction.Timestamp);
NodePosition = pose.Head.Position;
GazeForward = pose.Head.ForwardDirection;
GazeUp = pose.Head.UpDirection;
var mat = referenceFrameCoordinateSystem.TryGetTransformTo(CurrentNode.Anchor.CoordinateSystem);
if (mat.HasValue)
{
NodePosition = Vector3.Transform(NodePosition, mat.Value);
GazeForward = Vector3.TransformNormal(GazeForward, mat.Value);
GazeUp = Vector3.TransformNormal(GazeUp, mat.Value);
}
if (!string.IsNullOrEmpty(requestedSightingTerm))
{
var candidates = FindClosestNodesWithSightedItem(referenceFrameCoordinateSystem, pose, requestedSightingTerm);
if (candidates != null && candidates.Count > 0)
{
targetNode = candidates[0];
targetSighting = candidates[0].Sightings.Where(sighting => sighting.Tokens.Any(token => token.Equals(requestedSightingTerm, StringComparison.OrdinalIgnoreCase))).First();
}
requestedSightingTerm = string.Empty;
}
// currently at position
if (CurrentNode == targetNode)
{
if (dwellTimeAtCurrentNode >= 5)
{
targetNode = null;
targetSighting = null;
entities.Clear();
Debug.WriteLine("Well done! Assisted the user find their item");
}
}
if (targetNode != null)
{
RebuildTrailToTarget(referenceFrameCoordinateSystem, prediction.Timestamp, CurrentNode, targetNode);
}
ProcessNextFrame();
timer.Tick(() =>
{
dwellTimeAtCurrentNode += timer.ElapsedSeconds;
for (var entityIndex = 0; entityIndex < entities.Count; entityIndex++)
{
var entity = entities[entityIndex];
entity.Update(timer, referenceFrameCoordinateSystem);
}
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem referenceFrameCoordinateSystem = attachedReferenceFrame.GetStationaryCoordinateSystemAtTimestamp(prediction.Timestamp);
var previousNode = currentNode;
currentNode = UpdateCurrentNode(referenceFrameCoordinateSystem, prediction.Timestamp);
if (currentNode != previousNode)
{
SpatialPointerPose pose = SpatialPointerPose.TryGetAtTimestamp(referenceFrameCoordinateSystem, prediction.Timestamp);
}
if (targetNode != null)
{
RebuildTrailToTarget(referenceFrameCoordinateSystem, prediction.Timestamp, currentNode, targetNode);
}
SpatialInteractionSourceState pointerState = spatialInputHandler.CheckForInput();
if (null != pointerState)
{
Debug.WriteLine($"Setting target {nodes[1].Name}");
targetNode = nodes[1];
}
timer.Tick(() =>
{
if (currentNode != previousNode)
{
dwellTimeAtCurrentNode = 0;
}
else
{
dwellTimeAtCurrentNode += timer.ElapsedSeconds;
}
for (var entityIndex = entities.Count - 1; entityIndex >= 0; entityIndex--)
{
var entity = entities[entityIndex];
// update rotation of previous one
if (entityIndex != entities.Count - 1)
{
var previousEntity = entities[entityIndex + 1];
var previousEntityPosition = previousEntity.Node.TryGetTransformedPosition(referenceFrameCoordinateSystem);
var currentEntityPosition = entity.Node.TryGetTransformedPosition(referenceFrameCoordinateSystem);
if (previousEntityPosition.HasValue && currentEntityPosition.HasValue)
{
var tV = previousEntityPosition.Value;
var sV = currentEntityPosition.Value;
tV.Y = sV.Y = 0;
var diff = sV - tV;
var yAngle = Math.Atan2(diff.X, diff.Z);
entity.EulerAngles = new Vector3(0, (float)(yAngle * (180 / Math.PI)), 0);
}
}
entity.Update(timer, referenceFrameCoordinateSystem);
}
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera.
// You should set the focus point near the content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram,
// since that is the only hologram available for the user to focus on.
// You can also set the relative velocity and facing of that content; the sample
// hologram is at a fixed point so we only need to indicate its position.
//if (spinningCubeSpatialAnchor != null)
//{
// //renderingParameters.SetFocusPoint(
// //spinningCubeSpatialAnchor.CoordinateSystem,
// //spinningCubeRenderer.Position
// //);
//}
//else
//{
// //renderingParameters.SetFocusPoint(
// //currentCoordinateSystem,
// //spinningCubeRenderer.Position
// //);
//}
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}
/// <summary>
/// Updates the application state once per frame.
/// </summary>
public HolographicFrame Update()
{
// Before doing the timer update, there is some work to do per-frame
// to maintain holographic rendering. First, we will get information
// about the current frame.
// The HolographicFrame has information that the app needs in order
// to update and render the current frame. The app begins each new
// frame by calling CreateNextFrame.
HolographicFrame holographicFrame = holographicSpace.CreateNextFrame();
// Get a prediction of where holographic cameras will be when this frame
// is presented.
HolographicFramePrediction prediction = holographicFrame.CurrentPrediction;
// Back buffers can change from frame to frame. Validate each buffer, and recreate
// resource views and depth buffers as needed.
deviceResources.EnsureCameraResources(holographicFrame, prediction);
// Next, we get a coordinate system from the attached frame of reference that is
// associated with the current frame. Later, this coordinate system is used for
// for creating the stereo view matrices when rendering the sample content.
SpatialCoordinateSystem currentCoordinateSystem = referenceFrame.CoordinateSystem;
// Check for new input state since the last frame.
//foreach (var gamepad in gamepads)
//{
// pointerPressed |= ((gamepad.GetCurrentReading().Buttons & GamepadButtons.A) == GamepadButtons.A);
//}
//SpatialInteractionSourceState pointerState = spatialInputHandler.CheckForInput();
//SpatialPointerPose pose = null;
//if (null != pointerState)
//{
// pose = pointerState.TryGetPointerPose(currentCoordinateSystem);
//}
//else if (pointerPressed)
//{
// pose = SpatialPointerPose.TryGetAtTimestamp(currentCoordinateSystem, prediction.Timestamp);
//}
//pointerPressed = false;
//if (null != pose)
//{
// //var angle = Angle(pose.Head.ForwardDirection, new Vector3(0.0f, 0.0f, -1.0f), new Vector3(0.0f, 1.0f, 0.0f));
// //var rotator = Matrix4x4.CreateRotationY(-angle);
// //var mover = Matrix4x4.CreateTranslation(pose.Head.Position);
// //var transformer = rotator * mover;
//}
mutex.WaitOne();
var key = mainView.VirtualKey;
var count = mainView.KeyCount;
mainView.KeyCount = 0;
mainView.VirtualKey = Windows.System.VirtualKey.None;
mutex.ReleaseMutex();
if (key != Windows.System.VirtualKey.None && count > 0)
{
mainView.LastKey = key;
mainView.OnKeyPressed(key);
}
timer1.Tick(() =>
{
mainView.Update(timer1);
});
timer2.Tick(() =>
{
mainView.Update(SpatialPointerPose.TryGetAtTimestamp(currentCoordinateSystem, prediction.Timestamp));
});
// We complete the frame update by using information about our content positioning
// to set the focus point.
foreach (var cameraPose in prediction.CameraPoses)
{
// The HolographicCameraRenderingParameters class provides access to set
// the image stabilization parameters.
HolographicCameraRenderingParameters renderingParameters = holographicFrame.GetRenderingParameters(cameraPose);
// SetFocusPoint informs the system about a specific point in your scene to
// prioritize for image stabilization. The focus point is set independently
// for each holographic camera.
// You should set the focus point near the content that the user is looking at.
// In this example, we put the focus point at the center of the sample hologram,
// since that is the only hologram available for the user to focus on.
// You can also set the relative velocity and facing of that content; the sample
// hologram is at a fixed point so we only need to indicate its position.
if (mainView.Pointers[0] != null)
{
renderingParameters.SetFocusPoint(currentCoordinateSystem, mainView.Pointers[0].Position);
}
}
// The holographic frame will be used to get up-to-date view and projection matrices and
// to present the swap chain.
return(holographicFrame);
}