private bool UpdateVideoTexture()
{
return(_arWrapper.arwUpdateTexture32(_bufferAr));
}
void Update()
{
if (_arWrapper == null || !_isRunning)
{
return;
}
// Tell ARToolKit to capture a frame from the video camera
if (!_arWrapper.arwCapture())
{
return;
}
// We need to change the threshold and debug mode here, otherwise a concurrent op can happen and UpdateAr will crash
if (_arWrapperViewModel != null)
{
if (_arWrapper.arwGetVideoThresholdMode() != _arWrapperViewModel.SelectedThresholdMode.Mode)
{
_arWrapper.arwSetVideoThresholdMode(_arWrapperViewModel.SelectedThresholdMode.Mode);
}
if (_arWrapper.arwGetVideoDebugMode() != _arWrapperViewModel.UseDebugMode)
{
_arWrapper.arwSetVideoDebugMode(_arWrapperViewModel.UseDebugMode);
}
}
// Run marker detection and update results
_arWrapper.arwUpdateAR();
// Run the initialization which only works after the first ARToolKit arwUpdateAR marker detection was completed
if (!_wasStarted)
{
// Get video camera parameter
int width, height, pixelSize;
string pixelFormat;
if (!_arWrapper.arwGetVideoParams(out width, out height, out pixelSize, out pixelFormat))
{
throw new InvalidOperationException("ARToolkit arwGetVideoParams failed.");
}
Helper.Log("Video Params: {0} x {1}. Pixels size: {2} Format: {3}", width, height, pixelSize, pixelFormat);
// Initialize video frame buffer with the same dimensions like a video frame
var bufferLen = width * height;
if (_bufferAr == null || _bufferAr.Length != bufferLen)
{
_bufferAr = new uint[bufferLen];
}
// Initialize ArgsubD3D rendering of the D2D video frame bitmap and the cube
if (!_videoImage.Setup(ArD3dPanel.Context, width, height, pixelFormat, pixelSize, ArD3dPanel.DpiX, ArD3dPanel.DpiY))
{
throw new InvalidOperationException("Could not initialize D2D rendering.");
}
_cube.Setup(ArD3dPanel.Context);
_wasStarted = true;
}
// Get projection matrix
_arWrapper.arwGetProjectionMatrix(_projectionMatrix);
// Get marker modelView matrix and other marker properties
float confidence;
var isMarkerVisisble = _arWrapper.arwQueryMarkerVisibility(_markerId);
_arWrapper.arwQueryMarkerTransformation(_markerId, _markerModelViewMatrix);
confidence = _arWrapper.arwGetMarkerOptionFloat(_markerId, ArMarkerOption.SquareConfidence);
#if DEBUG
if (isMarkerVisisble)
{
Dispatcher.RunAsync(CoreDispatcherPriority.Low, () =>
{
DbgTxt.Text = string.Format("Marker: {0} Confidence: {1:f02}\r\n" +
"{2,7:f02} {3,7:f02} {4,7:f02} {5,7:f02}\r\n" +
"{6,7:f02} {7,7:f02} {8,7:f02} {9,7:f02}\r\n" +
"{10,7:f02} {11,7:f02} {12,7:f02} {13,7:f02}\r\n" +
"{14,7:f02} {15,7:f02} {16,7:f02} {17,7:f02}\r\n",
_markerId, confidence,
_markerModelViewMatrix[00], _markerModelViewMatrix[04], _markerModelViewMatrix[08], _markerModelViewMatrix[12],
_markerModelViewMatrix[01], _markerModelViewMatrix[05], _markerModelViewMatrix[09], _markerModelViewMatrix[13],
_markerModelViewMatrix[02], _markerModelViewMatrix[06], _markerModelViewMatrix[10], _markerModelViewMatrix[14],
_markerModelViewMatrix[03], _markerModelViewMatrix[07], _markerModelViewMatrix[11], _markerModelViewMatrix[15]);
});
}
#endif
// Copy camera video frame buffer into our own buffer
if (_arWrapper.arwUpdateTexture32(_bufferAr))
{
// Begin rendering with a clear
ArD3dPanel.BeginDraw(true);
// Pass the current video frame to the D2D bitmap and render it
ArD3dPanel.DisplayImage(_videoImage, _bufferAr);
// Rotate the cube if desired and render it at the marker position using the right modelView and projection matrix
if (isMarkerVisisble)
{
if (_shouldRotateCube)
{
_cube.Roll += 0.05f;
}
ArD3dPanel.DisplayObject(_cube, _markerModelViewMatrix, _projectionMatrix);
}
// Present the rendering result
ArD3dPanel.EndDraw();
}
}
