LongoMatch.Drawing.Widgets.Blackboard.Zoom C# (CSharp) Méthode

        public void Zoom(double zoom, Point center = null)
        {
            Area roi;
            double width, height;

            if (currentZoom == zoom)
                return;

            if (RegionOfInterest == null)
                roi = new Area (new Point (0, 0),
                    Background.Width, Background.Height);
            else
                roi = RegionOfInterest;

            width = Background.Width / zoom;
            height = Background.Height / zoom;

            if (center == null) {
                roi.Start.X = roi.Start.X + roi.Width / 2 - width / 2;
                roi.Start.Y = roi.Start.Y + roi.Height / 2 - height / 2;
            } else {
                roi.Start.X = center.X - width / 2;
                roi.Start.Y = center.Y - height / 2;
            }
            roi.Width = width;
            roi.Height = height;
            ClipRoi (roi);
            RegionOfInterest = roi;
            currentZoom = zoom;
        }