private static void zoomByFactor(ActionContext <IMapView2D, Point2D> context, Double zoomFactor)
{
IMapView2D view = context.MapView;
zoomFactor = 1 / zoomFactor;
Size2D viewSize = view.ViewSize;
Point2D viewCenter = new Point2D((viewSize.Width / 2), (viewSize.Height / 2));
Point2D viewDifference = context.CurrentPoint - viewCenter;
Point2D zoomUpperLeft = new Point2D(viewDifference.X * zoomFactor, viewDifference.Y * zoomFactor);
Size2D zoomBoundsSize = new Size2D(viewSize.Width * zoomFactor, viewSize.Height * zoomFactor);
Rectangle2D zoomViewBounds = new Rectangle2D(zoomUpperLeft, zoomBoundsSize);
view.ZoomToViewBounds(zoomViewBounds);
}
private static void zoomByFactor(IMapView2D view, Point2D zoomCenter, Double zoomFactor)
{
zoomFactor = 1 / zoomFactor;
Size2D viewSize = view.ViewSize;
Point2D viewCenter = new Point2D((viewSize.Width / 2), (viewSize.Height / 2));
Point2D viewDifference = zoomCenter - viewCenter;
Size2D zoomBoundsSize = new Size2D(viewSize.Width * zoomFactor, viewSize.Height * zoomFactor);
Double widthDifference = zoomBoundsSize.Width - viewSize.Width;
Double heightDifference = zoomBoundsSize.Height - viewSize.Height;
Point2D zoomUpperLeft = new Point2D(viewDifference.X * zoomFactor - widthDifference / 2,
viewDifference.Y * zoomFactor - heightDifference / 2);
Rectangle2D zoomViewBounds = new Rectangle2D(zoomUpperLeft, zoomBoundsSize);
view.ZoomToViewBounds(zoomViewBounds);
}
