/// <summary>Computes bounding rectangle for sequence of points</summary>
/// <param name="points">Points sequence</param>
/// <returns>Minimal axis-aligned bounding rectangle</returns>
public static DataRect GetViewportBounds(IEnumerable <Point> viewportPoints)
{
DataRect bounds = DataRect.Empty;
double xMin = Double.PositiveInfinity;
double xMax = Double.NegativeInfinity;
double yMin = Double.PositiveInfinity;
double yMax = Double.NegativeInfinity;
foreach (Point p in viewportPoints)
{
xMin = Math.Min(xMin, p.X);
xMax = Math.Max(xMax, p.X);
yMin = Math.Min(yMin, p.Y);
yMax = Math.Max(yMax, p.Y);
}
// were some points in collection
if (!Double.IsInfinity(xMin))
{
bounds = DataRect.Create(xMin, yMin, xMax, yMax);
}
return(bounds);
}
protected override DataRect CoerceVisible(DataRect newVisible, DataRect baseVisible)
{
DataRect result = newVisible;
if (Plotter == null)
{
return(baseVisible);
}
DataRect outerVisible = Plotter.Viewport.Visible;
double xMin = outerVisible.XMin * xScale + xShift;
double xMax = outerVisible.XMax * xScale + xShift;
double yMin = outerVisible.YMin * yScale + yShift;
double yMax = outerVisible.YMax * yScale + yShift;
outerVisible = DataRect.Create(xMin, yMin, xMax, yMax);
switch (ConjunctionMode)
{
case ViewportConjunctionMode.None:
result = baseVisible;
break;
case ViewportConjunctionMode.X:
result = new DataRect(outerVisible.XMin, baseVisible.YMin, outerVisible.Width, baseVisible.Height);
break;
case ViewportConjunctionMode.Y:
result = new DataRect(baseVisible.XMin, outerVisible.YMin, baseVisible.Width, outerVisible.Height);
break;
case ViewportConjunctionMode.XY:
result = outerVisible;
break;
default:
break;
}
return(result);
}
public static DataRect WithY(this DataRect rect, double ymin, double ymax)
{
return(DataRect.Create(rect.XMin, ymin, rect.XMax, ymax));
}
public static DataRect WithX(this DataRect rect, double xmin, double xmax)
{
return(DataRect.Create(xmin, rect.YMin, xmax, rect.YMax));
}
