/// <summary>
/// Annotates the specified isoline collection.
/// </summary>
/// <param name="collection">The collection.</param>
/// <param name="visible">The visible rectangle.</param>
/// <returns></returns>
public Collection <IsolineTextLabel> Annotate(IsolineCollection collection, Rect visible)
{
Collection <IsolineTextLabel> res = new Collection <IsolineTextLabel>();
foreach (var line in collection.Lines)
{
double way = 0;
foreach (var segment in line.GetSegments())
{
double length = segment.GetLength();
way += length;
if (way > wayBeforeText)
{
way = 0;
res.Add(new IsolineTextLabel
{
Text = line.RealValue.ToString("G2"),
Position = segment.Max,
Rotation = (segment.Max - segment.Min).ToAngle()
});
}
}
}
return(res);
}
/// <summary>
/// This method is called when data source changes.
/// </summary>
protected virtual void UpdateDataSource()
{
if (dataSource != null)
{
IsolineBuilder.DataSource = dataSource;
collection = IsolineBuilder.Build();
}
else
{
collection = null;
}
}
/// <summary>
/// Builds isoline data for the specified level in 2d scalar field.
/// </summary>
/// <param name="level">The level.</param>
/// <returns></returns>
public IsolineCollection Build(double level)
{
VerifyDataSource();
minMax = dataSource.GetMinMax();
values = dataSource.Data;
segments = new IsolineCollection();
PrepareCells(level);
return(segments);
}
/// <summary>
/// Builds isoline data by 2d scalar field containing in data source.
/// </summary>
/// <returns>Collection of data describing built isolines</returns>
public IsolineCollection Build()
{
VerifyDataSource();
minMax = dataSource.GetMinMax();
values = dataSource.Data;
double[] levels = GetLevelsForIsolines();
segments = new IsolineCollection();
foreach (double level in levels)
{
PrepareCells(level);
}
return(segments);
}
