[optimize] Pie support startAngle

Editor/Series/PieEditor.cs

@@ -11,6 +11,7 @@ namespace XCharts.Editor
             PropertyField("m_Gap");
             PropertyTwoFiled("m_Center");
             PropertyTwoFiled("m_Radius");
+            //PropertyField("m_StartAngle");
 
             PropertyFiledMore(() =>
             {

Runtime/Helper/SerieLabelHelper.cs

@@ -79,6 +79,7 @@ namespace XCharts.Runtime
         public static void UpdatePieLabelPosition(Serie serie, SerieData serieData)
         {
             if (serieData.labelObject == null) return;
+            var startAngle = serie.context.startAngle;
             var currAngle = serieData.context.halfAngle;
             var currRad = currAngle * Mathf.Deg2Rad;
             var offsetRadius = serieData.context.offsetRadius;
@@ -105,7 +106,7 @@ namespace XCharts.Runtime
                         var currSin = Mathf.Sin(currRad);
                         var currCos = Mathf.Cos(currRad);
                         var pos0 = new Vector3(serie.context.center.x + radius3 * currSin, serie.context.center.y + radius3 * currCos);
-                        if (currAngle > 180)
+                        if ((currAngle - startAngle) % 360 > 180)
                         {
                             currSin = Mathf.Sin((360 - currAngle) * Mathf.Deg2Rad);
                             currCos = Mathf.Cos((360 - currAngle) * Mathf.Deg2Rad);
@@ -113,7 +114,7 @@ namespace XCharts.Runtime
                         var r4 = Mathf.Sqrt(radius1 * radius1 - Mathf.Pow(currCos * radius3, 2)) - currSin * radius3;
                         r4 += labelLine.lineLength1 + labelLine.lineWidth * 4;
                         r4 += serieData.labelObject.label.GetPreferredWidth() / 2;
-                        serieData.context.labelPosition = pos0 + (currAngle > 180 ? Vector3.left : Vector3.right) * r4;
+                        serieData.context.labelPosition = pos0 + ((currAngle - startAngle) % 360 > 180 ? Vector3.left : Vector3.right) * r4;
                     }
                     else
                     {
@@ -184,11 +185,11 @@ namespace XCharts.Runtime
                     serieData.context.labelPosition = new Vector3(x1, y1);
                 }
                 lastCheckPos = serieData.context.labelPosition;
-                serieData.labelObject.SetPosition(SerieLabelHelper.GetRealLabelPosition(serieData, serieLabel, labelLine));
+                serieData.labelObject.SetPosition(SerieLabelHelper.GetRealLabelPosition(serie, serieData, serieLabel, labelLine));
             }
         }
 
-        public static Vector3 GetRealLabelPosition(SerieData serieData, LabelStyle label, LabelLine labelLine)
+        public static Vector3 GetRealLabelPosition(Serie serie, SerieData serieData, LabelStyle label, LabelLine labelLine)
         {
             if (label == null || labelLine == null)
                 return serieData.context.labelPosition;
@@ -197,7 +198,7 @@ namespace XCharts.Runtime
             {
                 var currAngle = serieData.context.halfAngle;
                 var offset = labelLine.lineLength2 + serieData.labelObject.GetLabelWidth() / 2;
-                if (currAngle > 180)
+                if ((currAngle - serie.context.startAngle) % 360 > 180)
                     return serieData.context.labelPosition + new Vector3(-offset, 0, 0);
                 else
                     return serieData.context.labelPosition + new Vector3(offset, 0, 0);

Runtime/Serie/Pie/PieHandler.cs

@@ -34,7 +34,7 @@ namespace XCharts.Runtime
         public override Vector3 GetSerieDataLabelPosition(SerieData serieData, LabelStyle label)
         {
             var labelLine = SerieHelper.GetSerieLabelLine(serie, serieData);
-            return SerieLabelHelper.GetRealLabelPosition(serieData, label, labelLine);
+            return SerieLabelHelper.GetRealLabelPosition(serie, serieData, label, labelLine);
         }
 
         public override void OnLegendButtonClick(int index, string legendName, bool show)
@@ -151,11 +151,12 @@ namespace XCharts.Runtime
         {
             var data = serie.data;
             serie.context.dataMax = serie.yMax;
+            serie.context.startAngle = GetStartAngle(serie);
             var runtimePieDataTotal = serie.yTotal;
 
             SerieHelper.UpdateCenter(serie, chart.chartPosition, chart.chartWidth, chart.chartHeight);
+            float startDegree = serie.context.startAngle;
             float totalDegree = 0;
-            float startDegree = 0;
             float zeroReplaceValue = 0;
             int showdataCount = 0;
             foreach (var sd in serie.data)
@@ -253,7 +254,7 @@ namespace XCharts.Runtime
 
         private double GetTotalAngle(Serie serie, double dataTotal, ref float totalAngle)
         {
-            totalAngle = 360f;
+            totalAngle = serie.context.startAngle + 360f;
             if (serie.minAngle > 0)
             {
                 var rate = serie.minAngle / 360;
@@ -435,6 +436,7 @@ namespace XCharts.Runtime
                 Vector3 pos4, pos6;
                 var horizontalLineCircleRadius = labelLine.lineWidth * 4f;
                 var lineCircleDiff = horizontalLineCircleRadius - 0.3f;
+                var startAngle = serie.context.startAngle;
                 if (currAngle < 90)
                 {
                     var r4 = Mathf.Sqrt(radius1 * radius1 - Mathf.Pow(currCos * radius3, 2)) - currSin * radius3;
@@ -467,7 +469,8 @@ namespace XCharts.Runtime
                     pos6 = pos0 + Vector3.left * lineCircleDiff;
                     pos4 = pos6 + Vector3.left * r4;
                 }
-                var pos5X = currAngle > 180 ? pos2.x - labelLine.lineLength2 : pos2.x + labelLine.lineLength2;
+                var pos5X = (currAngle - startAngle) % 360 > 180
+                    ? pos2.x - labelLine.lineLength2 : pos2.x + labelLine.lineLength2;
                 var pos5 = new Vector3(pos5X, pos2.y);
                 switch (labelLine.lineType)
                 {
@@ -526,5 +529,32 @@ namespace XCharts.Runtime
 
             return false;
         }
+
+        private float GetStartAngle(Serie serie)
+        {
+            return serie.clockwise ? (serie.startAngle + 360) % 360 : 360 - serie.startAngle;
+        }
+
+        private float GetToAngle(Serie serie, float angle)
+        {
+            var toAngle = angle + serie.startAngle;
+            if (!serie.clockwise)
+            {
+                toAngle = 360 - angle - serie.startAngle;
+            }
+            if (!serie.animation.IsFinish())
+            {
+                var currAngle = serie.animation.GetCurrDetail();
+                if (serie.clockwise)
+                {
+                    toAngle = toAngle > currAngle ? currAngle : toAngle;
+                }
+                else
+                {
+                    toAngle = toAngle < 360 - currAngle ? 360 - currAngle : toAngle;
+                }
+            }
+            return toAngle;
+        }
     }
 }

Runtime/Serie/SerieContext.cs

@@ -44,6 +44,7 @@ namespace XCharts.Runtime
         /// 外半径
         /// </summary>
         public float outsideRadius;
+        public float startAngle;
         /// <summary>
         /// 最大值
         /// </summary>