//Show frames diff image
private async Task <BitmapSource> ShowFramesDiffImage()
{
float dpi = MyCanvas.getDpi();
double Width = skeletonImageViewPane.ActualWidth;
double Height = skeletonImageViewPane.ActualHeight;
Task <BitmapSource> DrawFramesDiffImageTask = Task.Run(() => {
DrawingVisual visual = new DrawingVisual();
int intWidth = Convert.ToInt32(Width);
int intHeight = Convert.ToInt32(Height);
List <KeyValuePair <float, bool> > framesDiffList = this.postSkeletonData.getFrameDiffList();
float MaxFrameDiff = this.postSkeletonData.MaxFrameDiff;
//List<KeyValuePair<float, bool>> framesDiffList = utils.TestFramesDiffList;
using (DrawingContext context = visual.RenderOpen())
{
float LineWidth = (float)Width / this.sysParameter.frame_diff_queue_len;
Pen whitePen = new Pen(Brushes.White, LineWidth);
Pen greenPen = new Pen(Brushes.LightGreen, LineWidth);
for (int i = 0; i < framesDiffList.Count; i++)
{
var frameDiffPair = framesDiffList[i];
float lineHeight = frameDiffPair.Key / MaxFrameDiff * intHeight;
var startPoint = new Point(LineWidth * i, intHeight);
var endPoint = new Point(LineWidth * i, intHeight - lineHeight);
if (frameDiffPair.Value)
{
context.DrawLine(greenPen, startPoint, endPoint);
}
else
{
context.DrawLine(whitePen, startPoint, endPoint);
}
}
FormattedText formattedText = new FormattedText(
$"Frames Diff Max: {MaxFrameDiff:F2}",
CultureInfo.CurrentCulture,
FlowDirection.LeftToRight,
new Typeface("Arial"),
12,
Brushes.White,
VisualTreeHelper.GetDpi(this).PixelsPerDip);
context.DrawText(formattedText, new Point(0, 0));
}
BitmapSource framesDiffBitmap = this.utils.ConvertVisual2BitmapSource(visual, Width, Height, dpi);
framesDiffBitmap.Freeze();
return(framesDiffBitmap);
});
return(await DrawFramesDiffImageTask.ConfigureAwait(false));
}
//Show skeleton image
private async Task <BitmapSource> ShowSkeletonImage(Capture capture, Tracker tracker)
{
tracker.EnqueueCapture(capture);
// Try getting latest tracker frame.
using (Microsoft.Azure.Kinect.BodyTracking.Frame frame = tracker.PopResult(TimeSpan.Zero, throwOnTimeout: false))
{
if (frame != null)
{
// Save this frame for visualization in Renderer.
// One can access frame data here and extract e.g. tracked bodies from it for the needed purpose.
// Instead, for simplicity, we transfer the frame object to the rendering background thread.
// This example shows that frame popped from tracker should be disposed. Since here it is used
// in a different thread, we use Reference method to prolong the lifetime of the frame object.
// For reference on how to read frame data, please take a look at Renderer.NativeWindow_Render().
this.visualFrameData.Frame = frame.Reference();
}
else
{
return(null);
}
}
float dpi = MyCanvas.getDpi();
double Width = skeletonImageViewPane.ActualWidth;
double Height = skeletonImageViewPane.ActualHeight;
Task <BitmapSource> DrawSkeletonDataTask = Task.Run(() =>
{
var lastFrame = this.visualFrameData.TakeFrameWithOwnership();
if (lastFrame == null || lastFrame.NumberOfBodies == 0)
{
return(null);
}
//Get first skeleton
var skeleton = lastFrame.GetBodySkeleton(0);
//Update last post skeleton data
UpdateLastPostSkeletonData(skeleton);
//Draw Visual
List <float> jointPosList = new List <float>();
for (int jointId = 0; jointId < (int)JointId.Count; jointId++)
{
var joint = skeleton.GetJoint(jointId);
jointPosList.Add(joint.Position.X);
jointPosList.Add(joint.Position.Y);
}
float MarginX = 200.0f; float MarginY = 100.0f;
jointPosList = this.utils.SkeletonDataAbs2Rel(jointPosList, (int)Width, (int)Height, MarginX, MarginY);
DrawingVisual visual = new DrawingVisual();
using (DrawingContext context = visual.RenderOpen())
{
const float radius = 3.0f;
var boneColor = Color.FromRgb(255, 255, 255);
Brush bursh = new SolidColorBrush(boneColor);
Pen whitePen = new Pen(Brushes.White, radius);
Pen greenPen = new Pen(Brushes.LightGreen, radius);
for (int jointId = 0; jointId < jointPosList.Count / 2; jointId++)
{
// Render the joint as a ellipse.
var jointPoint = new Point(jointPosList[2 * jointId], jointPosList[2 * jointId + 1]);
context.DrawEllipse(bursh, whitePen, jointPoint, radius, radius);
// Render the bone as a line.
if (JointConnections.JointParent.TryGetValue((JointId)jointId, out JointId parentId))
{
var startPos = new Point(jointPosList[2 * jointId], jointPosList[2 * jointId + 1]);
int parId = Convert.ToInt32(parentId);
var endPos = new Point(jointPosList[2 * parId], jointPosList[2 * parId + 1]);
if (SLRPostJoint.PostJointsList.Contains((JointId)jointId) && SLRPostJoint.PostJointsList.Contains(parentId))
{
context.DrawLine(greenPen, startPos, endPos);
}
else
{
context.DrawLine(whitePen, startPos, endPos);
}
}
}
}
//this.utils.UpdataMyCanvasView(skeletonImageViewPane, visual, dpi);
BitmapSource skeletonBitmapSource = utils.ConvertVisual2BitmapSource(visual, Width, Height, dpi);
skeletonBitmapSource.Freeze();
return(skeletonBitmapSource);
});
return(await DrawSkeletonDataTask.ConfigureAwait(false));
}
