public void ZoomOutWithIdentityRatio()
{
DataRect rect = DataRect.FromCenterSize(new Point(0.1, 0.2), 0.3, 0.4);
DataRect zoomedOut = rect.ZoomOutFromCenter(1.0);
Assert.AreEqual(rect, zoomedOut);
}
public void ZoomOutFromCenter()
{
DataRect rect = DataRect.FromCenterSize(new Point(1, 1), new Size(1.6, 1.4));
DataRect zoomedOut = rect.ZoomOutFromCenter(2.0);
Assert.AreEqual(new Point(1 - 1.6, 1 - 1.4), zoomedOut.Location);
}
public void ZoomOutFromCenterSimple()
{
DataRect rect = DataRect.FromCenterSize(new Point(0, 0), new Size(0.5, 0.5));
DataRect zoomedOut = rect.ZoomOutFromCenter(2.0);
Assert.AreEqual(new Point(-0.5, -0.5), zoomedOut.Location);
Assert.AreEqual(1.0, zoomedOut.Width);
Assert.AreEqual(1.0, zoomedOut.Height);
}
public override DataRect Apply(DataRect oldDataRect, DataRect newDataRect, Viewport2D viewport)
{
double ratio = newDataRect.Width / newDataRect.Height;
double coeff = Math.Sqrt(ratio);
double newWidth = newDataRect.Width / coeff;
double newHeight = newDataRect.Height * coeff;
Point center = newDataRect.GetCenter();
DataRect res = DataRect.FromCenterSize(center, newWidth, newHeight);
return(res);
}
protected internal override IEnumerable <Point> Filter(IEnumerable <Point> series)
{
prevOutput = Output;
var visible = Visible;
prevVisible = visible;
bounds = DataRect.FromCenterSize(visible.GetCenter(), new Size(visible.Width * visibleIncreaseRatio, visible.Height * visibleIncreaseRatio));
//IParallelEnumerable<Point> parallel = (IParallelEnumerable<Point>)series;
//Trace.WriteLine("In BoundsFilter: " + Environment.TickCount);
IEnumerable <Point> result;
if (Environment.FirstDraw)
{
result = series;
}
else
{
result = series.Where(p => bounds.Contains(p));
}
return(result);
}
