public WebcamOverlayReactor(WebcamOverlaySettings Settings)
{
Margin = Settings
.ObserveProperty(M => M.X)
.CombineLatest(
Settings
.ObserveProperty(M => M.Y),
FrameSize,
(X, Y, FrameSize) =>
{
var pos = Settings.GetPosition((float)FrameSize.Width, (float)FrameSize.Height);
return(new Thickness(pos.X, pos.Y, 0, 0));
})
.ToReadOnlyReactivePropertySlim();
Width = Settings
.ObserveProperty(M => M.Width)
.CombineLatest(FrameSize, (Width, FrameSize) => Settings.GetWidth((float)FrameSize.Width))
.ToReadOnlyReactivePropertySlim();
Height = Settings
.ObserveProperty(M => M.Height)
.CombineLatest(FrameSize, (Height, FrameSize) => Settings.GetHeight((float)FrameSize.Height))
.ToReadOnlyReactivePropertySlim();
Opacity = Settings
.ObserveProperty(M => M.Opacity)
.Select(M => M / 100.0)
.ToReadOnlyReactivePropertySlim();
}
public override void Draw(IEditableFrame Editor, Func <Point, Point> PointTransform = null)
{
var pos = _settings.GetPosition(Editor.Width, Editor.Height);
var w = _settings.GetWidth(Editor.Width);
var h = _settings.GetHeight(Editor.Height);
Draw(Editor, GetImage(Editor), pos, new SizeF(w, h), _settings.Opacity);
}
public override void Draw(IEditableFrame Editor, Func <Point, Point> PointTransform = null)
{
// No Webcam
if (_webcamModel.AvailableCams.Count < 1 || _webcamModel.SelectedCam is NoWebcamItem)
{
return;
}
var cap = _webcamModel.WebcamCapture;
if (cap == null)
{
return;
}
var pos = _settings.GetPosition(Editor.Width, Editor.Height);
var w = _settings.GetWidth(Editor.Width);
var h = _settings.GetHeight(Editor.Height);
var imgWbyH = cap.Width / cap.Height;
var frameWbyH = w / h;
if (imgWbyH > frameWbyH)
{
var newH = w / imgWbyH;
pos.Y += (h - newH) / 2;
h = newH;
}
else
{
var newW = h * imgWbyH;
pos.X += (w - newW) / 2;
w = newW;
}
Draw(Editor, GetImage(Editor), pos, new SizeF(w, h), _settings.Opacity);
}