简单画线算法

AIStudio.Wpf.DiagramDesigner/Helpers/DrawingHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public static class DrawingHelper
+    {
+        public static List<Point> GetPoints(Point startPoint, double angle, List<Tuple<double, double>> angleAndWidth)
+        {
+            List<Point> points = new List<Point>();
+            points.Add(startPoint);
+
+            Point thisPoint= startPoint;           
+            double thisAngle = angle;
+
+            Point nextPoint;
+            foreach (var item in angleAndWidth)
+            {
+                nextPoint = GetEndPointByTrigonometric(thisPoint, thisAngle, item.Item1);
+                points.Add((Point)nextPoint);
+
+                thisPoint = nextPoint;
+                thisAngle = thisAngle + item.Item2;
+            }
+
+            return points;
+        }
+
+
+        /// <summary>
+        /// 通过三角函数求终点坐标
+        /// </summary>
+        /// <param name="angle">角度</param>
+        /// <param name="startPoint">起点</param>
+        /// <param name="distance">距离</param>
+        /// <returns>终点坐标</returns>
+        public static Point GetEndPointByTrigonometric(Point startPoint, double angle,  double distance)
+        {
+            //角度转弧度
+            var radian = (angle * Math.PI) / 180;
+
+            //计算新坐标 r 就是两者的距离
+            Point endPoint = new Point(startPoint.X + distance * Math.Cos(radian), startPoint.Y + distance * Math.Sin(radian));
+
+            return endPoint;
+        }
+
+    }
+}