折线图优化

Scripts/UI/Utility/ChartHelper.cs

@@ -318,6 +318,18 @@ namespace XCharts
             return GetBezierList2(sp, ep, segment, cp1, cp2);
         }
 
+        public static Vector3[] GetBezierListVertical(Vector3 sp, Vector3 ep, float k = 2.0f)
+        {
+            Vector3 dir = (ep - sp).normalized;
+            float dist = Vector3.Distance(sp, ep);
+            Vector3 cp1 = sp + dist / k * dir * 1;
+            Vector3 cp2 = sp + dist / k * dir * (k - 1);
+            cp1.y = sp.y;
+            cp2.y = ep.y;
+            int segment = (int)(dist / 0.3f);
+            return GetBezierList2(sp, ep, segment, cp2, cp1);
+        }
+
         public static List<Vector3> GetBezierList(Vector3 sp, Vector3 ep, int segment, Vector3 cp)
         {
             List<Vector3> list = new List<Vector3>();
@@ -463,7 +475,7 @@ namespace XCharts
             if (mm > 10)
             {
                 mm = bigger - bigger % (Mathf.Pow(10, n));
-                mm += max >0 ? Mathf.Pow(10, n) : -Mathf.Pow(10, n);
+                mm += max > 0 ? Mathf.Pow(10, n) : -Mathf.Pow(10, n);
             }
             if (max < 0) return (int)-mm;
             else return (int)mm;
@@ -502,5 +514,79 @@ namespace XCharts
             trigger.triggers.Clear();
             trigger.triggers.Add(entry1);
         }
+
+
+        //获取两直线交点
+        public static Vector3 GetIntersection(Vector3 lineAStart, Vector3 lineAEnd, Vector3 lineBStart, Vector3 lineBEnd)
+        {
+            float x1 = lineAStart.x, y1 = lineAStart.y;
+            float x2 = lineAEnd.x, y2 = lineAEnd.y;
+            float x3 = lineBStart.x, y3 = lineBStart.y;
+            float x4 = lineBEnd.x, y4 = lineBEnd.y;
+            //equations of the form x=c (two vertical lines)
+            if (x1 == x2 && x3 == x4 && x1 == x3)
+            {
+                return Vector3.zero;
+            }
+            //equations of the form y=c (two horizontal lines)
+            if (y1 == y2 && y3 == y4 && y1 == y3)
+            {
+                return Vector3.zero;
+            }
+            //equations of the form x=c (two vertical lines)
+            if (x1 == x2 && x3 == x4)
+            {
+                return Vector3.zero;
+
+            }
+            //equations of the form y=c (two horizontal lines)
+            if (y1 == y2 && y3 == y4)
+            {
+                return Vector3.zero;
+            }
+            float x, y;
+            if (x1 == x2)
+            {
+                float m2 = (y4 - y3) / (x4 - x3);
+                float c2 = -m2 * x3 + y3;
+                x = x1;
+                y = c2 + m2 * x1;
+            }
+            else if (x3 == x4)
+            {
+                float m1 = (y2 - y1) / (x2 - x1);
+                float c1 = -m1 * x1 + y1;
+                x = x3;
+                y = c1 + m1 * x3;
+            }
+            else
+            {
+                //compute slope of line 1 (m1) and c2
+                float m1 = (y2 - y1) / (x2 - x1);
+                float c1 = -m1 * x1 + y1;
+                //compute slope of line 2 (m2) and c2
+                float m2 = (y4 - y3) / (x4 - x3);
+                float c2 = -m2 * x3 + y3;
+                //solving equations (3) & (4) => x = (c1-c2)/(m2-m1)
+                //plugging x value in equation (4) => y = c2 + m2 * x
+                x = (c1 - c2) / (m2 - m1);
+                y = c2 + m2 * x;
+            }
+
+            if (IsInsideLine(lineAStart, lineAEnd, x, y) &&
+                IsInsideLine(lineBStart, lineBEnd, x, y))
+            {
+                return new Vector3(x, y, 0);
+            }
+            return Vector3.zero;
+        }
+
+        private static bool IsInsideLine(Vector3 start, Vector3 end, float x, float y)
+        {
+            return ((x >= start.x && x <= end.x)
+                || (x >= end.x && x <= start.x))
+                && ((y >= start.y && y <= end.y)
+                    || (y >= end.y && y <= start.y));
+        }
     }
 }