3.0 - polar chart

Runtime/Coord/Polar/PolarCoord.cs

@@ -14,7 +14,7 @@ namespace XCharts
     [Serializable]
     [ComponentHandler(typeof(PolarCoordHandler), true)]
     [RequireChartComponent(typeof(AngleAxis), typeof(RadiusAxis))]
-    public class PolarCoord : CoordSystem
+    public class PolarCoord : CoordSystem, ISerieContainer
     {
         [SerializeField] private bool m_Show = true;
         [SerializeField] private float[] m_Center = new float[2] { 0.5f, 0.45f };
@@ -63,5 +63,14 @@ namespace XCharts
             set { if (PropertyUtil.SetColor(ref m_BackgroundColor, value)) SetVerticesDirty(); }
         }
 
+        public bool IsPointerEnter()
+        {
+            return context.isPointerEnter;
+        }
+
+        public bool Contains(Vector3 pos)
+        {
+            return Vector3.Distance(pos, context.center) < context.radius;
+        }
     }
 }

Runtime/Coord/Polar/PolarCoordContext.cs

@@ -16,5 +16,6 @@ namespace XCharts
         /// 极坐标的运行时实际半径。
         /// </summary>
         public float radius { get; internal set; }
+        public bool isPointerEnter { get; set; }
     }
 }

Runtime/Coord/Polar/PolarCoordHandler.cs

@@ -12,6 +12,11 @@ namespace XCharts
         public override void Update()
         {
             PolarHelper.UpdatePolarCenter(component, chart.chartPosition, chart.chartWidth, chart.chartHeight);
+
+            if (chart.isPointerInChart)
+                component.context.isPointerEnter = component.Contains(chart.pointerPos);
+            else
+                component.context.isPointerEnter = false;
         }
 
         public override void DrawBase(VertexHelper vh)