0.2版本，重构代码，增加Editor

Scripts/UI/Internal/Line.cs

@@ -0,0 +1,41 @@
+using UnityEngine;
+
+namespace XCharts
+{
+    [System.Serializable]
+    public class Line
+    {
+        [SerializeField] private float m_Tickness;
+        [SerializeField] private bool m_Point;
+        [SerializeField] private float m_PointWidth;
+        [SerializeField] private bool m_Smooth;
+        [SerializeField] [Range(1f, 10f)] private float m_SmoothStyle;
+        [SerializeField] private bool m_Area;
+        [SerializeField] private Color m_AreaColor;
+
+        public float tickness { get { return m_Tickness; } set { m_Tickness = value; } }
+        public bool point { get { return m_Point; } set { m_Point = value; } }
+        public float pointWidth { get { return m_PointWidth; } set { m_PointWidth = value; } }
+        public bool smooth { get { return m_Smooth; } set { m_Smooth = value; } }
+        public float smoothStyle { get { return m_SmoothStyle; } set { m_SmoothStyle = value; } }
+        public bool area { get { return m_Area; } set { m_Area = value; } }
+        public Color areaColor { get { return m_AreaColor; } set { m_AreaColor = value; } }
+
+        public static Line defaultLine
+        {
+            get
+            {
+                var line = new Line
+                {
+                    m_Tickness = 0.8f,
+                    m_Point = true,
+                    m_PointWidth = 2.5f,
+                    m_Smooth = false,
+                    m_SmoothStyle = 2f,
+                    m_Area = false
+                };
+                return line;
+            }
+        }
+    }
+}