重构代码，增加柱形图

Scripts/BarChart.cs

@@ -4,98 +4,41 @@ using UnityEngine.UI;
 
 namespace xcharts
 {
-    [System.Serializable]
-    public class BarGroup
+
+    public class BarChart : BaseChart
     {
-        [SerializeField]
-        public string name;
-        [SerializeField]
-        public Color color;
-    }
-
-    [System.Serializable]
-    public class BarData
-    {
-        [SerializeField]
-        public string group;
-        [SerializeField]
-        public string key;
-        [SerializeField]
-        public float value;
-    }
-
-    public class BarChart : MaskableGraphic
-    {
-        [SerializeField]
-        private float keyRectWidth = 50;
-        [SerializeField]
-        private float valueRectWidth = 50;
-        [SerializeField]
-        private float barWidth = 50;
-        [SerializeField]
-        private float barSpace = 20;
-        [SerializeField] 
-        private Color backgroundColor = Color.black;
-
-        [SerializeField]
-        private List<BarGroup> groupList = new List<BarGroup>();
-        [SerializeField]
-        private List<BarData> dataList = new List<BarData>();
-
-        private float dataTotal = 0;
-        private List<Text> keyTextList = new List<Text>();
-        private List<Text> valueTextList = new List<Text>();
-
-        private float chartWid { get { return rectTransform.sizeDelta.x; } }
-        private float chartHig { get { return rectTransform.sizeDelta.y; } }
-        
-
-        void Awake()
+        protected override void Awake()
         {
-            dataTotal = getDataTotal();
+            base.Awake();
         }
 
-        void Update()
+        protected override void Update()
         {
-
-        }
-
-        private float getDataTotal()
-        {
-            float total = 0;
-            foreach (var data in dataList)
-            {
-                total += data.value;
-            }
-            return total;
+            base.Update();
         }
 
         protected override void OnPopulateMesh(VertexHelper vh)
         {
-            vh.Clear();
-            // draw bg
-            Vector3 p1 = new Vector3(-keyRectWidth, 0);
-            Vector3 p2 = new Vector3(chartWid, 0);
-            Vector3 p3 = new Vector3(chartWid, -chartHig);
-            Vector3 p4 = new Vector3(-keyRectWidth, -chartHig);
-            ChartUtils.DrawPolygon(vh, p1, p2, p3, p4, backgroundColor);
-
-            //draw data bar
-
-            dataTotal = getDataTotal();
-            for(int i=0;i<dataList.Count;i++)
+            base.OnPopulateMesh(vh);
+            foreach(var series in seriesList)
             {
-                BarData data = dataList[i];
-                float barLen = data.value / dataTotal * (chartWid - valueRectWidth);
-                float posY = i * (barWidth + barSpace);
-                p1 = new Vector3(0,-posY);
-                p2 = new Vector3(barLen, -posY);
-                p3 = new Vector3(barLen, -(posY + barWidth));
-                p4 = new Vector3(0, -(posY + barWidth));
-                ChartUtils.DrawPolygon(vh, p1, p2, p3, p4, Color.grey);
+                float scaleWid = coordinateWid / (xAxis.scaleNum - 1);
+                float barWid = scaleWid * 0.6f;
+                float space = (scaleWid - barWid) / 2;
+                float max = series.max;
+                for (int i = 0; i < series.dataList.Count; i++)
+                {
+                    SeriesData data = series.dataList[i];
+                    float pX = zeroX + i * coordinateWid / (xAxis.scaleNum - 1);
+                    float pY = zeroY + coordinate.tickness;
+                    float barHig = data.value / max * coordinateHig;
+                    Vector3 p1 = new Vector3(pX+space,pY);
+                    Vector3 p2 = new Vector3(pX + space, pY + barHig);
+                    Vector3 p3 = new Vector3(pX + space + barWid, pY + barHig);
+                    Vector3 p4 = new Vector3(pX + space +barWid, pY);
+                    ChartUtils.DrawPolygon(vh,p1,p2,p3,p4,Color.blue);
+                }
             }
-
-            ChartUtils.DrawLine(vh, new Vector3(0, 0), new Vector3(0, -chartHig), 1.5f, Color.white);
         }
     }
 }