public async Task <WriteableBitmap> GetImage(MappedFrame frame)
{
var key = $"{frame.Camera}:{frame.Frame}";
if (!_images.ContainsKey(key))
{
var camera = _camers[frame.Camera];
_images[key] = await(await ImageLoader.Create(camera)).GetImage(frame);
}
return(_images[key]);
}
public bool AddPoint(Point currentPoint)
{
var result = false;
if (PreviousFrame == null)
{
PreviousFrame = new MappedFrame
{
Point = currentPoint
};
result = true;
}
else
{
var x1 = PreviousFrame.Point.X;
var y1 = PreviousFrame.Point.Y;
var x2 = currentPoint.X;
var y2 = currentPoint.Y;
var frame = (int)((x2 * frameCount) / width) + 2;
var camera = (int)((y2 * cameraCount) / height);
var distance = PreviousFrame.Point.GetDistance(currentPoint);
if (frame != PreviousFrame.Frame || camera != PreviousFrame.Camera)
{
var mappedFrame = new MappedFrame
{
Speed = distance / (DateTime.UtcNow - PreviousFrame.MappedTime).TotalSeconds,
ViewTime = (DateTime.UtcNow - PreviousFrame.MappedTime).TotalMilliseconds,
Point = currentPoint,
Camera = camera,
Frame = frame
};
PreviousFrame = mappedFrame;
frames.Add(mappedFrame);
result = true;
}
}
return(result);
}
public async Task <WriteableBitmap> GetImage(MappedFrame frame)
{
var file = await _cameraFolder.OpenStreamForReadAsync($"{frame.Frame:D2}.jpg");
return(await GetImage(file.AsRandomAccessStream()));
}
