丑陋的MS asp.net雷达图绘制

Question

我正在使用MS asp.net图表控件。我正在使用雷达图来绘制一些值，但由于某种原因，X轴的线条在中间并不真正相遇。

我设置了LineWidth = 1，但线条仍然需要2个像素，有些标记完全关闭，或者可能是完全关闭的线条。 也许我的文字有点偏，所以请看图片，希望你能理解我的问题。 =）

生成图表的代码：

// Populate series data
Chart chart1 = new Chart();
chart1.ChartAreas.Add(new ChartArea("ChartArea1"));

chart1.Height = new Unit(380);
chart1.Width = new Unit(880);
//chart1.AntiAliasing = AntiAliasingStyles.Graphics;  
//chart1.BackColor = Color.Transparent;
chart1.Customize += new EventHandler(Chart_Customize);

// Show as 3D
chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = false;
chart1.ChartAreas["ChartArea1"].AxisY.IntervalAutoMode
    = IntervalAutoMode.FixedCount;
chart1.ChartAreas["ChartArea1"].AxisY.Interval = 10;
chart1.ChartAreas["ChartArea1"].AxisY.Maximum = 100;

chart1.ChartAreas["ChartArea1"].AxisY.IsReversed = true;

chart1.ChartAreas[0].AxisY.LineWidth = 1;
chart1.ChartAreas[0].AxisY.MajorGrid.LineColor = Color.Gray;
chart1.ChartAreas[0].AxisY.LineColor = Color.Gray;
chart1.ChartAreas[0].AxisY.MajorTickMark.Enabled = false;

List<string> names = new List<string>();
int namecounter = 1;
foreach (var p in Model.Participants)
{
  if (SessionHandle.ShowNamesInDiagrams)
    names.Add(p.Person.Name);
  else
    names.Add(namecounter.ToString());
  namecounter++;
}

#region firstresult
if (SessionHandle.ShowFirstResult)
{
  chart1.Series.Add(new Series("FirstResult"));
  List<double> firstresult = new List<double>();
  foreach (var p in Model.Participants)
  {
    var resultSummary = from r in Model.ResultSummary
                        where r.userID == p.ParentID && Model
                            .Modules
                            .Where(x => x.hasResult)
                            .ToList()
                            .Exists(x => x.ID == r.moduleID)
                        select r;
    firstresult.Add(resultSummary.Sum(x => x.scorePercent)
                    / Model.Modules.Where(x => x.hasResult).Count());
  }

  chart1.Series["FirstResult"].Points.DataBindXY(names, firstresult);
  // Set radar chart type
  chart1.Series["FirstResult"].ChartType = SeriesChartType.Radar;

  // Set radar chart style (Area, Line or Marker)
  chart1.Series["FirstResult"]["RadarDrawingStyle"] = "Marker";
  chart1.Series["FirstResult"].Color = Color.DarkBlue;
  chart1.Series["FirstResult"].MarkerImage
      = Url.Content("~/Content/Images/firstresult.png");

  // Set circular area drawing style (Circle or Polygon)
  chart1.Series["FirstResult"]["AreaDrawingStyle"] = "Circle";

  // Set labels style (Auto, Horizontal, Circular or Radial)
  chart1.Series["FirstResult"]["CircularLabelsStyle"] = "Horizontal";
}
#endregion

Answer 1

WPF坐标指的是像素的中心，而不是角点，因此请尝试在所有坐标上添加0.5。为了证明这一点，请考虑以下xaml：

<Canvas>
<Line X1="50" Y1="50" X2="100" Y2="50" Stroke="Black" StrokeThickness="1" />
<Line X1="50" Y1="50" X2="50" Y2="100" Stroke="Black" StrokeThickness="1" />
<Line X1="50" Y1="50" X2="100" Y2="100" Stroke="Black" StrokeThickness="1" />
</Canvas>

这里正常渲染，然后对每个坐标应用0.5像素偏移：