private void DrawFrame(PredictionModel prediction, Canvas overlayCanvas)
{
_overlayCanvasActualWidth = (uint)CameraPreview.ActualWidth;
_overlayCanvasActualHeight = (uint)CameraPreview.ActualHeight;
var x = (uint)Math.Max(prediction.Box.Left, 0);
var y = (uint)Math.Max(prediction.Box.Top, 0);
var w = (uint)Math.Min(_overlayCanvasActualWidth - x, prediction.Box.Width);
var h = (uint)Math.Min(_overlayCanvasActualHeight - y, prediction.Box.Height);
Debug.WriteLine($"\tOverLay Canvas \tActual Width: {_overlayCanvasActualWidth}, Actual Height: {_overlayCanvasActualHeight}");
Debug.WriteLine(prediction.GetExtendedDescription());
Debug.WriteLine($"\tOriginal\tY: {y}, x: {x}, Height: {h}, Width: {w}");
// fit to current size
var factorSize = 100u;
x = _overlayCanvasActualWidth * x / factorSize;
y = _overlayCanvasActualHeight * y / factorSize;
w = _overlayCanvasActualWidth * w / factorSize;
h = _overlayCanvasActualHeight * h / factorSize;
Debug.WriteLine($"\tScaled\tY: {y}, x: {x}, Height: {h}, Width: {w}");
var rectStroke = _lineBrushGreen;
switch (prediction.TagName)
{
case "arch":
rectStroke = _lineBrushGray;
break;
case "triangle":
rectStroke = _lineBrushGreen;
break;
case "square":
rectStroke = _lineBrushGreen;
break;
}
var r = new Windows.UI.Xaml.Shapes.Rectangle
{
Tag = prediction,
Width = w,
Height = h,
Fill = _fillBrush,
Stroke = rectStroke,
StrokeThickness = _lineThickness,
Margin = new Thickness(x, y, 0, 0)
};
var tb = new TextBlock
{
Margin = new Thickness(x + 4, y + 4, 0, 0),
Text = $"{prediction}",
FontWeight = FontWeights.Bold,
Width = 126,
Height = 21,
HorizontalTextAlignment = TextAlignment.Center
};
var textBack = new Windows.UI.Xaml.Shapes.Rectangle
{
Width = 150,
Height = 29,
Fill = rectStroke,
Margin = new Thickness(x, y, 0, 0)
};
overlayCanvas.Children.Add(textBack);
overlayCanvas.Children.Add(tb);
overlayCanvas.Children.Add(r);
}