/// <summary>
/// Renders an Area chart a canvas. This method is called by the chart class.
/// </summary>
/// <param name="canvasWrapper">wrapper class containing info mation about the canvas and chart</param>
/// <param name="axis">Axis orientation object</param>
/// <param name="minMax">Data for the extreme values</param>
/// <param name="gridPaint">Paint object for the grid lines</param>
public override void RenderChart(CanvasWrapper canvasWrapper, Axis axis, IMinMax minMax)
{
CheckConstructionPolicy(nameof(LineChart));
if (canvasWrapper.NumberPlottedChart < 1)
{
DrawHorizontalLabels(canvasWrapper, axis, minMax);
DrawVerticalLabels(canvasWrapper, axis, minMax);
}
var canvas = canvasWrapper.Canvas;
var path = new SKPath();
var firstPoint = ConstructionData.First();
var lastPoint = ConstructionData.Last();
var connectionPoint = new SKPoint(lastPoint.X, firstPoint.Y);
ConstructionData.Add(connectionPoint);
path.MoveTo(ConstructionData.First());
foreach (var point in ConstructionData.Skip(1))
{
path.LineTo(point);
if (ShowPoints)
{
canvas.DrawCircle(point, PointRadius, _chartPaint);
}
}
path.FillType = SKPathFillType.EvenOdd;
path.Close();
_chartPaint.IsStroke = false;
canvas.DrawPath(path, _chartPaint);
canvasWrapper.NumberPlottedChart += 1;
if (canvasWrapper.CanShowLegend)
{
RenderLegend(canvasWrapper, axis, canvas, PointPlotVariant.AreaChart);
}
}
