//判断图例的形状：线形or矩形
private bool JudgeLegendForm(DataCollection dc)
{
bool likeline = true;
switch (dc.ChartType)
{
case Chart2DTypeEnum.LineChart:
likeline = true;
break;
case Chart2DTypeEnum.AreaChart:
case Chart2DTypeEnum.BarChart:
case Chart2DTypeEnum.PieChart:
likeline = false;
break;
case Chart2DTypeEnum.PolorChart:
DataCollectionPolar dcp = dc as DataCollectionPolar;
if (dcp.PolarChartType == PolarCharts.PolarChartTypeEnum.Radar || dcp.PolarChartType == PolarCharts.PolarChartTypeEnum.Spline)
{
likeline = true;
}
else if (dcp.PolarChartType == PolarCharts.PolarChartTypeEnum.RadarPolygon || dcp.PolarChartType == PolarCharts.PolarChartTypeEnum.Rose)
{
likeline = false;
}
break;
}
return(likeline);
}
public PolarControl()
{
InitializeComponent();
cs = new ChartStylePolar();
dc = new DataCollectionPolar();
ds = new DataSeries();
cs.ChartCanvas = chartCanvas;
}
public void Plot(Canvas canvas, double min, double max, int directions)
{
var cs = new ChartStylePolar();
cs.ChartCanvas = canvas;
cs.Rmin = min;
cs.Rmax = max;
cs.NTicks = 4;
cs.AngleStep = 360 / directions;
cs.AngleOffset = -90;
cs.AngleDirection = ChartStylePolar.AngleDirectionEnum.ClockWise;
cs.LinePattern = ChartStylePolar.LinePatternEnum.Dot;
cs.LineColor = Brushes.Black;
cs.SetPolarAxes(true);
var dc = new DataCollectionPolar();
foreach (var plot in _plots.Values)
{
var ds = new DataSeries();
ds.LineColor = new SolidColorBrush(plot.LineColor);
var fill = new SolidColorBrush(plot.FillColor);
fill.Opacity = .5;
ds.LineSeries.Fill = fill;
var dt = 360 / directions / 2;
foreach (var sector in plot.Points)
{
ds.LineSeries.Points.Add(new Point(0, cs.Rmin));
for (int i = 0; i <= cs.AngleStep; i++)
{
double angle = i + sector.Direction * cs.AngleStep - dt;
ds.LineSeries.Points.Add(new Point(angle, sector.Value));
}
ds.LineSeries.Points.Add(new Point(0, cs.Rmin));
}
dc.DataList.Add(ds);
}
dc.AddPolar(cs);
}
internal static void AddPolar(DataCollectionPolar dc, Graphics g, ChartStyle cs, RAxis ra)
{
if (!dc.CheckNegative())
{
return;
}
float xc = cs.polarArea.X + cs.polarArea.Width / 2;
float yc = cs.polarArea.Y + cs.polarArea.Height / 2;
Pen aPen = null;
SolidBrush aBrush = null;
// Plot lines:
//雷达图
if (dc.PolarChartType == PolarChartTypeEnum.Radar || dc.PolarChartType == PolarChartTypeEnum.RadarPolygon)
{
foreach (DataSeries ds in dc.DataSeriesList)
{
aBrush = new SolidBrush(ds.FillColor);
aPen = new Pen(ds.LineStyle.LineColor, ds.LineStyle.LineThickness);
aPen.DashStyle = ds.LineStyle.LinePattern;
PointF[] pts = new PointF[ds.PointList.Count];
for (int i = 0; i < ds.PointList.Count; i++)
{
pts[i] = cs.Point2DR((PointF)ds.PointList[i], ra);
}
if (ds.LineStyle.IsVisible == true)
{
g.DrawPolygon(aPen, pts);
}
if (dc.PolarChartType == PolarChartTypeEnum.RadarPolygon)
{
g.FillPolygon(aBrush, pts);
}
}
}
//玫瑰图
else if (dc.PolarChartType == PolarChartTypeEnum.Rose)
{
Dictionary <float, float> rSum = new Dictionary <float, float>();
for (int a = 0; a < 360 / ra.AngleStep; a++)
{
rSum.Add(a * ra.AngleStep, 0);
}
foreach (DataSeries ds in dc.DataSeriesList)
{
foreach (PointF p in ds.PointList)
{
if (p.Y < 0)
{
return;
}
if (rSum.ContainsKey(p.X))
{
rSum[p.X] += p.Y;
}
else
{
return;
}
}
}
for (int i = dc.DataSeriesList.Count - 1; i >= 0; i--)
{
DataSeries ds = (DataSeries)dc.DataSeriesList[i];
aBrush = new SolidBrush(ds.FillColor);
aPen = new Pen(ds.LineStyle.LineColor, ds.LineStyle.LineThickness);
aPen.DashStyle = ds.LineStyle.LinePattern;
//ds.LineStyle.IsVisible = false;
float sweepAngle = ra.AngleStep * dc.RoseBarWidth;
float pStartAngle = 0;
int pBarLeng = 0;
foreach (PointF p in ds.PointList)
{
pStartAngle = p.X + ra.StartAngle - sweepAngle / 2;
pBarLeng = (int)Math.Ceiling(cs.RNorm(rSum[p.X], ra));
Rectangle rect1 = new Rectangle((int)xc - pBarLeng, (int)yc - pBarLeng, pBarLeng * 2, pBarLeng * 2);
g.FillPie(aBrush, rect1, pStartAngle, sweepAngle);
if (ds.LineStyle.IsVisible)
{
g.DrawPie(aPen, rect1, pStartAngle, sweepAngle);
}
rSum[p.X] -= p.Y;
}
}
}
//曲线图
else if (dc.PolarChartType == PolarChartTypeEnum.Spline)
{
foreach (DataSeries ds in dc.DataSeriesList)
{
aPen = new Pen(ds.LineStyle.LineColor, ds.LineStyle.LineThickness);
aPen.DashStyle = ds.LineStyle.LinePattern;
PointF[] pts = new PointF[ds.PointList.Count];
if (ds.LineStyle.IsVisible == true)
{
for (int i = 0; i < ds.PointList.Count; i++)
{
pts[i] = cs.Point2DR((PointF)ds.PointList[i], ra);
}
g.DrawClosedCurve(aPen, pts);
}
}
}
// Plot Symbols:
if (dc.PolarChartType == PolarChartTypeEnum.Radar || dc.PolarChartType == PolarChartTypeEnum.Spline)
{
foreach (DataSeries ds in dc.DataSeriesList)
{
for (int i = 0; i < ds.PointList.Count; i++)
{
PointF pt = cs.Point2DR((PointF)ds.PointList[i], ra);
if (!pt.IsEmpty)
{
ds.SymbolStyle.DrawSymbol(g, pt);
}
}
}
}
if (aPen != null)
{
aPen.Dispose();
}
if (aBrush != null)
{
aBrush.Dispose();
}
}
