首次提交：本地项目同步到Gitea

LibShapes/Utils/DistanceCalculation.cs

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+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+
+namespace Io.Github.Kerwinxu.LibShapes.Utils
+{
+    /// <summary>
+    /// 距离计算的类，
+    /// </summary>
+    public  class DistanceCalculation
+    {
+        /// <summary>
+        /// 选择的容忍度
+        /// </summary>
+        public static float select_tolerance = 1f;
+
+        /// <summary>
+        /// 两点之间的距离
+        /// </summary>
+        /// <param name="p1"></param>
+        /// <param name="p2"></param>
+        /// <returns></returns>
+        public static float distance(PointF p1, PointF p2)
+        {
+            return (float)Math.Sqrt((p1.X - p2.X) * (p1.X - p2.X) + (p1.Y - p2.Y) * (p1.Y - p2.Y));
+        }
+
+        /// <summary>
+        /// 点到线段的距离
+        /// </summary>
+        /// <param name="p0">点</param>
+        /// <param name="p1">线段的点1</param>
+        /// <param name="p2">线段的点2</param>
+        /// <returns></returns>
+        public static float pointToLine(PointF p0, PointF p1, PointF p2)
+        {
+   
+            float a = distance(p1, p2); // 求出这个线段的长度
+            float b = distance(p0, p1); // 这个点跟线段的点1的长度
+            float c = distance(p0, p2); // 这个点跟线段的点2的长度
+            // 这里分几种情况
+            if (c*c >= a*a + b*b)
+            {
+                // 如果这个特别的长，那么这个点就不考虑距离了
+                return b;
+            }else if(b*b >= a * a + c * c)
+            {
+                // 同理
+                return c;
+            }
+            else
+            {
+                float p = (a + b + c) / 2; // 半周长
+                double s = Math.Sqrt(p * (p - a) * (p - b) * (p - c)); // 海伦公式求面积
+                return (float)(2 * s / a); // 返回点到线的距离
+            }
+
+        }
+    }
+}

LibShapes/Utils/ExcelData.cs

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+using ExcelDataReader;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.IO;
+using System.Linq;
+using System.Text;
+
+namespace Io.Github.Kerwinxu.LibShapes.Utils
+{
+    /// <summary>
+    /// 这个是一个工具类，可以读取excel数据的
+    /// </summary>
+    public  class ExcelData
+    {
+        public static DataTable LoadExcel(string file_path)
+        {
+            using (var stream = File.Open(file_path, FileMode.Open, FileAccess.Read))
+            {
+                using (var reader = ExcelReaderFactory.CreateReader(stream))
+                {
+
+                    // Gets or sets a callback to obtain configuration options for a DataTable. 
+                    var conf = new ExcelDataSetConfiguration()
+                    {
+                        // Gets or sets a value indicating whether to set the DataColumn.DataType 
+                        // property in a second pass.
+                        UseColumnDataType = true,
+
+                        // Gets or sets a callback to determine whether to include the current sheet
+                        // in the DataSet. Called once per sheet before ConfigureDataTable.
+                        FilterSheet = (tableReader, sheetIndex) => true,
+
+                        // Gets or sets a callback to obtain configuration options for a DataTable. 
+                        ConfigureDataTable = (tableReader) => new ExcelDataTableConfiguration()
+                        {
+                            // Gets or sets a value indicating the prefix of generated column names.
+                            EmptyColumnNamePrefix = "Column",
+
+                            // Gets or sets a value indicating whether to use a row from the 
+                            // data as column names. 是否使用数据作为列名
+                            UseHeaderRow = true,
+
+                            //// Gets or sets a callback to determine which row is the header row. 
+                            //// Only called when UseHeaderRow = true.
+                            //ReadHeaderRow = (rowReader) =>
+                            //{
+                            //    // F.ex skip the first row and use the 2nd row as column headers:
+                            //    rowReader.Read();
+                            //},
+
+                            // Gets or sets a callback to determine whether to include the 
+                            // current row in the DataTable.
+                            FilterRow = (rowReader) =>
+                            {
+                                return true;
+                            },
+
+                            // Gets or sets a callback to determine whether to include the specific
+                            // column in the DataTable. Called once per column after reading the 
+                            // headers.
+                            FilterColumn = (rowReader, columnIndex) =>
+                            {
+                                return true;
+                            }
+                        }
+                    };
+
+                    var ds = reader.AsDataSet(conf);
+                    // 这里方便只是导入第一个
+                    return ds.Tables[0];
+                }
+
+            }
+
+            return null;
+        }
+    }
+}