private void DrawFigure(SharpDXFigure figure)
{
SharpDX.Direct2D1.PathGeometry geometry = new SharpDX.Direct2D1.PathGeometry(Core.Globals.D2DFactory);
SharpDX.Direct2D1.GeometrySink sink = geometry.Open();
sink.BeginFigure(figure.Points[0], new SharpDX.Direct2D1.FigureBegin());
for (int i = 0; i < figure.Points.Length; i++)
{
sink.AddLine(figure.Points[i]);
}
sink.AddLine(figure.Points[0]);
sink.EndFigure(SharpDX.Direct2D1.FigureEnd.Closed);
sink.Close();
RenderTarget.FillGeometry(geometry, dxmBrushes[figure.Color].DxBrush);
geometry.Dispose();
sink.Dispose();
}
private void DrawRegionBetweenSeries(ChartScale chartScale, Series <double> firstSeries, Series <double> secondSeries, string upperColor, string lowerColor, int displacement)
{
string BrushName = String.Empty;
List <SharpDX.Vector2> SeriesAPoints = new List <SharpDX.Vector2>();
List <SharpDX.Vector2> SeriesBPoints = new List <SharpDX.Vector2>();
List <SharpDX.Vector2> tmpPoints = new List <SharpDX.Vector2>();
List <SharpDXFigure> SharpDXFigures = new List <SharpDXFigure>();
// Convert SeriesA and SeriesB to points
int start = ChartBars.FromIndex - displacement > 0 ? ChartBars.FromIndex - displacement : 0;
int end = ChartBars.ToIndex;
for (int barIndex = start; barIndex <= end; barIndex++)
{
if (firstSeries.IsValidDataPointAt(barIndex))
{
SeriesAPoints.Add(new SharpDX.Vector2((float)ChartControl.GetXByBarIndex(ChartBars, barIndex + displacement), (float)chartScale.GetYByValue(firstSeries.GetValueAt(barIndex))));
SeriesBPoints.Add(new SharpDX.Vector2((float)ChartControl.GetXByBarIndex(ChartBars, barIndex + displacement), (float)chartScale.GetYByValue(secondSeries.GetValueAt(barIndex))));
}
}
int lastCross = 0;
bool isTouching = false;
bool colorNeeded = true;
for (int i = 0; i < SeriesAPoints.Count; i++)
{
if (colorNeeded)
{
colorNeeded = false;
// Set initial color or wait until we need to start a shape
if (SeriesAPoints[i].Y < SeriesBPoints[i].Y)
{
BrushName = upperColor;
}
else if (SeriesAPoints[i].Y > SeriesBPoints[i].Y)
{
BrushName = lowerColor;
}
else
{
colorNeeded = true;
lastCross = i;
}
if (!colorNeeded)
{
tmpPoints.Add(SeriesAPoints[i]);
}
continue;
}
// Check if SeriesA and SeriesB meet or have crossed to loop back and close figure
if ((SeriesAPoints[i].Y == SeriesBPoints[i].Y && isTouching == false) ||
(SeriesAPoints[i].Y > SeriesBPoints[i].Y && SeriesAPoints[i - 1].Y < SeriesBPoints[i - 1].Y) ||
(SeriesBPoints[i].Y > SeriesAPoints[i].Y && SeriesBPoints[i - 1].Y < SeriesAPoints[i - 1].Y))
{
// reset isTouching
isTouching = false;
// Set the endpoint
SharpDX.Vector2 endpoint = (SeriesAPoints[i].Y != SeriesBPoints[i].Y) ? FindIntersection(SeriesAPoints[i - 1], SeriesAPoints[i], SeriesBPoints[i - 1], SeriesBPoints[i]) : SeriesAPoints[i];
tmpPoints.Add(endpoint);
// Loop back and add SeriesBPoints
for (int j = i - 1; j >= lastCross; j--)
{
tmpPoints.Add(SeriesBPoints[j]);
}
// Create figure
SharpDXFigure figure = new SharpDXFigure(tmpPoints.ToArray(), (SeriesAPoints[i - 1].Y < SeriesBPoints[i - 1].Y) ? upperColor : lowerColor);
SharpDXFigures.Add(figure);
// Clear Points
tmpPoints.Clear();
// Start new figure if we crossed, otherwise we will wait until we need a new figure
if (SeriesAPoints[i].Y != SeriesBPoints[i].Y)
{
tmpPoints.Add(SeriesBPoints[i]);
tmpPoints.Add(endpoint);
tmpPoints.Add(SeriesAPoints[i]);
}
else
{
isTouching = true;
}
// Set last cross
lastCross = i;
}
// Check if we are at the end of our rendering pass to loop back to loop back and close figure
else if (i == SeriesAPoints.Count - 1)
{
tmpPoints.Add(SeriesAPoints[i]);
// Loop back and add SeriesBPoints
for (int j = i; j >= lastCross; j--)
{
tmpPoints.Add(SeriesBPoints[j]);
}
// Create figure
SharpDXFigure figure = new SharpDXFigure(tmpPoints.ToArray(), (SeriesAPoints[i].Y < SeriesBPoints[i].Y) ? upperColor : lowerColor);
SharpDXFigures.Add(figure);
// Clear Points
tmpPoints.Clear();
break;
}
// Figure does not need to be closed. Add more points or open a new figure if we were touching
else if (SeriesAPoints[i].Y != SeriesBPoints[i].Y)
{
if (isTouching == true)
{
tmpPoints.Add(SeriesAPoints[i - 1]);
lastCross = i - 1;
}
tmpPoints.Add(SeriesAPoints[i]);
isTouching = false;
}
}
// Draw figures
foreach (SharpDXFigure figure in SharpDXFigures)
{
DrawFigure(figure);
}
}
