/// <summary>
/// Transforms an List of Entry into a float array containing the x and
/// y values transformed with all matrices for the CANDLESTICKCHART.
/// </summary>
public SKPoint[] GenerateTransformedValuesLine(Interfaces.DataSets.ILineDataSet data,
float phaseX, float phaseY,
int min, int max)
{
Interfaces.DataSets.IDataSet dataSet = data;
int count = ((int)((max - min) * phaseX) + 1);
if (valuePointsForGenerateTransformedValuesLine.Length != count)
{
valuePointsForGenerateTransformedValuesLine = new SKPoint[count];
}
var valuePoints = valuePointsForGenerateTransformedValuesLine;
for (int j = 0; j < count; j++)
{
var e = dataSet[j + min];
if (e != null)
{
valuePoints[j] = new SKPoint(e.X, e.Y * phaseY);
}
}
return(ValueToPixelMatrix.MapPoints(valuePoints));
}
protected override IList <Highlight> BuildHighlights(Interfaces.DataSets.IDataSet set, int dataSetIndex, float xVal, Data.DataSetRounding rounding)
{
//noinspection unchecked
var entries = set.EntriesForXValue(xVal);
if (entries.Count == 0)
{
// Try to find closest x-value and take all entries for that x-value
Entry closest = set.EntryForXValue(xVal, float.NaN, rounding);
if (closest != null)
{
//noinspection unchecked
entries = set.EntriesForXValue(closest.X);
}
}
int count = entries.Count;
if (count == 0)
{
return(System.Array.Empty <Highlight>());
}
Highlight[] highlights = new Highlight[count];
for (int i = 0; i < count; i++)
{
Entry e = entries[i];
var pixels = Chart.GetTransformer(
set.AxisDependency).PointValueToPixel(e.Y, e.X);
highlights[i] = new Highlight(
e.X, e.Y,
(float)pixels.X, (float)pixels.Y,
dataSetIndex, set.AxisDependency);
}
return(highlights);
}
/// <summary>
/// Applies the required styling (provided by the DataSet) to the value-paint
/// object.
/// </summary>
protected void ApplyValueTextStyle(Interfaces.DataSets.IDataSet set)
{
ValuePaint.Typeface = set.ValueTypeface;
ValuePaint.TextSize = set.ValueTextSize;
}