* UILineChart: 修复数据全为Nan时绘制出错

SunnyUI/Charts/UILineChart.cs

@@ -38,6 +38,7 @@
  * 2022-07-30: V3.2.2 数据显示的日期格式重构调整至数据序列 Series.XAxisDateTimeFormat
  * 2022-07-30: V3.2.2 坐标轴的小数位数重构调整至坐标轴标签 AxisLabel.DecimalPlaces
  * 2022-07-30: V3.2.2 坐标轴的日期格式重构调整至坐标轴标签 AxisLabel.DateTimeFormat
+ * 2022-08-17: V3.2.3 修复数据全为Nan时绘制出错
 ******************************************************************************/
 
 using System;

SunnyUI/Charts/UILineChartOption.cs

@@ -234,6 +234,12 @@ namespace Sunny.UI
                         }
                     }
                 }
+
+                if (min > max)
+                {
+                    min = 0;
+                    max = 1;
+                }
             }
         }
 
@@ -276,6 +282,12 @@ namespace Sunny.UI
                             }
                         }
                     }
+
+                    if (min > max)
+                    {
+                        min = 0;
+                        max = 1;
+                    }
                 }
             }
         }

SunnyUI/Common/UGraphics.cs

@@ -297,6 +297,8 @@ namespace Sunny.UI
         /// <param name="penWidth">笔宽</param>
         public static void DrawLine(this Graphics g, Color color, float x1, float y1, float x2, float y2, bool smooth = false, float penWidth = 1)
         {
+            if (y1.IsNanOrInfinity() || y2.IsNanOrInfinity() || x1.IsNanOrInfinity() || x2.IsNanOrInfinity()) return;
+
             using (Pen pen = color.Pen(penWidth))
             {
                 g.Smooth(smooth);