/// <summary>
/// Vykreslení hodnot sloupcového grafu
/// </summary>
/// <param name="yAsix"></param>
private void DrawBarChartValues(CMLChartYAsix yAsix)
{
if (yAsix != null)
{
var asixStartPointX = Width - (int)Math.Floor(Width * offsetX);
var asixXEndPointX = (int)Math.Floor(Width * offsetX);
var asixMaxPointY = (int)Math.Floor(Height * offsetYTop);
var asixMinPointY = (int)Math.Floor(Height * offsetYBottom);
for (int i = 0; i < yAsix.Values.Length; i++)
{
var distance = ((double)i / yAsix.Values.Length) * (asixXEndPointX - asixStartPointX);
var valuePart = (yAsix.Values[i] - yAsix.MinValue) * (1 / (yAsix.MaxValue - yAsix.MinValue));
var barHeight = (int)((asixMinPointY - asixMaxPointY) * valuePart);
var x = (int)(distance + asixStartPointX);
var y = (int)Math.Floor(Height * offsetYBottom) - barHeight;
var width = (int)(((double)1 / yAsix.Values.Length) * (asixXEndPointX - asixStartPointX));
if (yAsix.Fill)
{
BarPaint.Style = SKPaintStyle.Fill;
}
_canvas.DrawRect(new SKRect(x, y, x + width, y + barHeight), BarPaint);
}
}
}
/// <summary>
/// Vykreslení hodnot čárového grafu
/// </summary>
/// <param name="yAsix"></param>
private void DrawLineChartValues(CMLChartYAsix yAsix)
{
if (yAsix != null)
{
var asixStartPointX = Width - (int)Math.Floor(Width * offsetX);
var asixXEndPointX = (int)Math.Floor(Width * offsetX);
var asixMaxPointY = (int)Math.Floor(Height * offsetYTop);
var asixMinPointY = (int)Math.Floor(Height * offsetYBottom);
SKPoint[] bezierPoints = new SKPoint[yAsix.Values.Length + 1];
for (int i = 0; i < yAsix.Values.Length; i++)
{
var distance = ((double)i / yAsix.Values.Length) * (asixXEndPointX - asixStartPointX);
var valuePart = (yAsix.Values[i] - yAsix.MinValue) * (1 / (yAsix.MaxValue - yAsix.MinValue));
var pointHeight = ((asixMinPointY - asixMaxPointY) * valuePart);
var x = (float)(distance + asixStartPointX);
var y = (float)((Height * offsetYBottom) - pointHeight);
bezierPoints[i] = new SKPoint(x, y);
}
bezierPoints[yAsix.Values.Length] = bezierPoints[yAsix.Values.Length - 1];
SKPath path = new SKPath();
path.MoveTo(bezierPoints[0]);
for (int i = 1; i < bezierPoints.Length; i += 3)
{
path.CubicTo(bezierPoints[i], bezierPoints[i + 1], bezierPoints[i + 2]);
}
path.MoveTo(bezierPoints[bezierPoints.Length - 1]);
LinePaint.Style = SKPaintStyle.Stroke;
_canvas.DrawPath(path, LinePaint);
}
}
