ZedGraph 填充区域

Question

我正在使用 ZedGraph 控件，想用某种颜色填充图形函数的一侧，而用另一种颜色填充另一侧。

 PointPairList list1 = new PointPairList();
 list1.Add(0, 4);
 list1.Add(4, 0);
 LineItem myCurve = myPane.AddCurve("y(n)", list1, Color.Red, SymbolType.Diamond);

 //This filling bottom side.
 myCurve.Line.Fill = new Fill(Color.White, Color.FromArgb(113, 255, 0, 0), 90F);

 //How to fill the top side?

Answer 1

我不是很清楚你在问什么 - 但希望以下内容会有所帮助。你在cmets里说的

我可以在 Zedgraph 中填充一些多边形区域吗？

所以这里是如何...

var zed = new ZedGraph.ZedGraphControl { Dock = System.Windows.Forms.DockStyle.Fill };

var poly = new ZedGraph.PolyObj
{
    Points = new[]
    {
        new ZedGraph.PointD(0, 0),
        new ZedGraph.PointD(0.5, 1),
        new ZedGraph.PointD(1, 0.5),
        new ZedGraph.PointD(0, 0)
    },
    Fill = new ZedGraph.Fill(Color.Blue),
    ZOrder = ZedGraph.ZOrder.E_BehindCurves
};

var poly1 = new ZedGraph.PolyObj
{
    Points = new[]
    {
        new ZedGraph.PointD(1, 0),
        new ZedGraph.PointD(0.25, 1),
        new ZedGraph.PointD(0.5, 0),
        new ZedGraph.PointD(1, 0)
    },
    Fill = new ZedGraph.Fill(Color.Red),
    ZOrder = ZedGraph.ZOrder.E_BehindCurves
};

zed.GraphPane.AddCurve("Line", new[] { 0.0, 1.0 }, new[] { 0.0, 1.0 }, Color.Green);
zed.GraphPane.GraphObjList.Add(poly1);
zed.GraphPane.GraphObjList.Add(poly);

结果

希望这将为您指明正确的方向！

_{(Code in VB as requested via http://converter.telerik.com/ - 没有保证 VB 代码工作甚至编译！)}