使用netdxf（C#）框架实现dxf文件读取与导出坐标

使用netdxf（C#）框架实现dxf文件读取与导出坐标

一、新建窗体应用程序DxfToolDemo，将默认的Form1重命名为FormDxfTool

窗体FormDxfTool.Designer.cs设计器源程序如下：

namespace DxfToolDemo
{
    partial class FormDxfTool
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要修改
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.rtxtMessage = new System.Windows.Forms.RichTextBox();
            this.btnOpenDxf = new System.Windows.Forms.Button();
            this.btnExportCsv = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // rtxtMessage
            // 
            this.rtxtMessage.Location = new System.Drawing.Point(12, 70);
            this.rtxtMessage.Name = "rtxtMessage";
            this.rtxtMessage.Size = new System.Drawing.Size(1102, 529);
            this.rtxtMessage.TabIndex = 0;
            this.rtxtMessage.Text = "";
            // 
            // btnOpenDxf
            // 
            this.btnOpenDxf.Font = new System.Drawing.Font("宋体", 15F);
            this.btnOpenDxf.Location = new System.Drawing.Point(23, 12);
            this.btnOpenDxf.Name = "btnOpenDxf";
            this.btnOpenDxf.Size = new System.Drawing.Size(127, 43);
            this.btnOpenDxf.TabIndex = 1;
            this.btnOpenDxf.Text = "打开Dxf文件";
            this.btnOpenDxf.UseVisualStyleBackColor = true;
            this.btnOpenDxf.Click += new System.EventHandler(this.btnOpenDxf_Click);
            // 
            // btnExportCsv
            // 
            this.btnExportCsv.Font = new System.Drawing.Font("宋体", 15F);
            this.btnExportCsv.Location = new System.Drawing.Point(185, 12);
            this.btnExportCsv.Name = "btnExportCsv";
            this.btnExportCsv.Size = new System.Drawing.Size(182, 43);
            this.btnExportCsv.TabIndex = 2;
            this.btnExportCsv.Text = "导出坐标为.CSV";
            this.btnExportCsv.UseVisualStyleBackColor = true;
            this.btnExportCsv.Click += new System.EventHandler(this.btnExportCsv_Click);
            // 
            // FormDxfTool
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(1126, 611);
            this.Controls.Add(this.btnExportCsv);
            this.Controls.Add(this.btnOpenDxf);
            this.Controls.Add(this.rtxtMessage);
            this.Name = "FormDxfTool";
            this.Text = "Dxf转化工具【CAD文件转坐标】";
            this.Load += new System.EventHandler(this.FormDxfTool_Load);
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.RichTextBox rtxtMessage;
        private System.Windows.Forms.Button btnOpenDxf;
        private System.Windows.Forms.Button btnExportCsv;
    }
}

二、右键 项目DxfToolDemo， 管理NuGet程序包，输入关键字netDxf,下载该程序包

三、netDxf框架关键类型说明：

关键结构 netDxf.Vector3
? ? ? ? ? ? 可以认为是立体三维坐标(x,y,z)
关键结构 netDxf.Vector2
? ? ? ? ? ? 可以认为是平面二维坐标(x,y)

DxfDocument用于读写dxf文件

? ? ? 关键函数Load()用于加载文件

? ? ? 添加实体：dxfDocument.Entities.Add(EntityObject entity);

? ? ? 关键函数Save()用于保存文件?

关键属性：
Entities:
对应类型 netDxf.Collections.DrawingEntities

密封类DrawingEntities由一系列【点、线、圆等】集合组成，允许直接访问与图形中实体相关的操作

对应的各种实体EntityObject说明：
netDxf.Entities.EntityObject:
? ? ? ? Gets the complete list entities contained in the active layout.
? ? ? ? 抽象类，以下所有实体对象的父类

netDxf.Entities.PolyfaceMesh:
? ? Represents a polyface mesh entity.

netDxf.Entities.Text:
? ? Gets the list of texts in the active layout.
? ? ? ? ? ?
?netDxf.Entities.MText: ? ? ??
? ? ?Gets the list of multiline texts in the active layout.

?netDxf.Entities.Hatch: ? ? ??
? ? ?Gets the list of hatches in the active layout.

?netDxf.Entities.Image: ? ??
? ? ?Gets the list of images in the active layout.
?
netDxf.Entities.Mesh: ? ? ?
? ? ? ? Gets the list of mesh in the active layout.
?
netDxf.Entities.Leader: ? ? ? ?
? ? ? ? Gets the list of leader in the active layout.
? ? ? ? ? ? ?
netDxf.Entities.Point:
? ? ? ? Gets the list of points in the active layout.
? ? ? ??
netDxf.Entities.Tolerance:
? ? ? ? Gets the list of tolerance in the active layout.
? ? ? ??
netDxf.Entities.MLine:
? ? ? ? Gets the list of multilines in the active layout.
? ? ? ??
netDxf.Entities.Dimension:
? ? ? ? Gets the list of dimensions in the active layout.
? ? ? ??
netDxf.Entities.Spline:
? ? ? ? Gets the list of splines in the active layout.
? ? ? ? ?
netDxf.Entities.Ray:
? ? ? ? Gets the list of rays in the active layout.

netDxf.Entities.Viewport: ? ? ? ?
? ? ? ? Gets the list of viewports in the active layout.

netDxf.Entities.XLine:
? ? ? ? Gets the list of extension lines in the active layout.
? ? ? ??
netDxf.Entities.Underlay:
? ? ? ? Gets the list of underlay in the active layout.
? ? ? ?
netDxf.Entities.PolygonMesh:
? ? ? ? Gets the list of polygon meshes in the active layout.

netDxf.Entities.AttributeDefinition:
? ? ? ? Gets the list of attribute definitions in the active layout.

netDxf.Entities.Polyline3D:
? ? ? ? Gets the list of polylines in the active layout.

netDxf.Entities.Arc:
? ? ? ? Gets the list of arcs contained in the active layout.?

netDxf.Entities.Ellipse:
? ? ? ? Gets the list of ellipses in the active layout.

netDxf.Entities.Wipeout:
? ? ? ? Gets the list of wipeouts in the active layout.?

netDxf.Entities.Face3D:
? ? ? ? Gets the list of 3d faces in the active layout.

netDxf.Entities.Circle:
? ? ? ? Gets the list of circles in the active layout.

netDxf.Entities.Trace:
? ? ? ? Gets the list of traces in the active layout.

netDxf.Entities.Insert:
? ? ? ? Gets the list of inserts in the active layout.

netDxf.Entities.Line:
? ? ? ? Gets the list of lines in the active layout.

netDxf.Entities.Shape:
? ? ? ? Gets the list of shapes in the active layout.

netDxf.Entities.Polyline2D:
? ? ? ? Gets the list of polylines in the active layout.

netDxf.Entities.Solid:
? ? ? ? Gets the list of solids in the active layout.

四、新建csv导出类CsvUtil，

CsvUtil.cs源程序如下：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DxfToolDemo
{
    public class CsvUtil
    {
        /// <summary>
        /// 写CSV日志 按列显示
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="coordList">元组：圆心坐标，半径，模板名</param>
        /// <returns></returns>
        public static bool WriteCoordinateLogCsv(string fileName, List<Tuple<netDxf.Vector3, double, string>> coordList)
        {
            if (coordList == null || coordList.Count == 0) 
            {
                return false;
            }
            try
            {
                string directoryPath = Path.GetDirectoryName(fileName);
                if (!Directory.Exists(directoryPath))
                {
                    Directory.CreateDirectory(directoryPath);
                }
                string columnContents = "模板名,极柱序号,圆心X坐标,圆心Y坐标,圆心Z坐标,圆心半径\r\n";
                if (!File.Exists(fileName))
                {
                    File.AppendAllText(fileName, columnContents, Encoding.Default);
                }

                StringBuilder sb = new StringBuilder();
                using (StreamWriter write = new StreamWriter(fileName, true, Encoding.Default))
                {
                    for (int i = 0; i < coordList.Count; i++)
                    {
                        sb = new StringBuilder();
                        sb.Append($"{ProcessPunctuationForCsv(coordList[i].Item3)},");
                        sb.Append($"{i + 1},");
                        sb.Append($"{coordList[i].Item1.X},");
                        sb.Append($"{coordList[i].Item1.Y},");
                        sb.Append($"{coordList[i].Item1.Z},");
                        sb.Append($"{coordList[i].Item2}");
                        write.WriteLine(sb.ToString());
                    }                    
                }
                return true;
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show("CSV文件写入失败：" + ex.Message);
                return false;
            }
        }

        /// <summary>
        /// 处理csv文件中的双引号和逗号，使其在Excel中完美显示为一个单元格
        /// 斯内科
        /// </summary>
        /// <param name="srcStr"></param>
        /// <returns></returns>
        private static string ProcessPunctuationForCsv(string srcStr)
        {
            if (srcStr == null)
            {
                return string.Empty;
            }
            bool quoteFlag = false;//是否添加过双引号
            //如果存在双引号，需要将字符串的一个双引号 替换为 两个双引号。并且需要在字符串的前后加上双引号
            if (srcStr.Contains("\""))
            {
                srcStr = srcStr.Replace("\"", "\"\"");
                srcStr = "\"" + srcStr + "\"";
                quoteFlag = true;
            }
            //如果只存在逗号（不存在引号），将前后加引号即可
            if (srcStr.Contains(",") && !quoteFlag)
            {
                srcStr = "\"" + srcStr + "\"";
            }
            return srcStr;
        }
    }
}

五、窗体程序如下：

FormDxfTool.cs源程序：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using netDxf;
using netDxf.Collections;
using netDxf.Entities;

namespace DxfToolDemo
{
    public partial class FormDxfTool : Form
    {
        public FormDxfTool()
        {
            InitializeComponent();
            rtxtMessage.ReadOnly = true;            
        }

        /// <summary>
        /// 显示推送消息
        /// </summary>
        /// <param name="msg"></param>
        private void DisplayMessage(string msg)
        {
            this.BeginInvoke(new Action(() =>
            {
                if (rtxtMessage.TextLength > 20480)
                {
                    rtxtMessage.Clear(); 
                }
                rtxtMessage.AppendText($"{DateTime.Now.ToString("HH:mm:ss.fff")}->{msg}\n");
                rtxtMessage.ScrollToCaret();
            }));
        }

        private void btnOpenDxf_Click(object sender, EventArgs e)
        {
            rtxtMessage.Clear();
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.InitialDirectory = AppDomain.CurrentDomain.BaseDirectory;
            openFileDialog.Filter = "dxf|*.dxf|All|*.*";
            DialogResult dialog = openFileDialog.ShowDialog();
            if (dialog != DialogResult.OK)
            {
                return;
            }
            string fileName = openFileDialog.FileName;//AppDomain.CurrentDomain.BaseDirectory + "testFile\\蓝本-CAD.dxf"
            DisplayMessage($"CAD文件dxf路径为【{fileName}】");
            DxfDocument dxfDocument = DxfDocument.Load(fileName);
            DisplayMessage($"活动布局的名称为【{dxfDocument.Entities.ActiveLayout}】");
            rtxtMessage.Tag = dxfDocument.Entities;
            IEnumerable<Circle> circles = dxfDocument.Entities.Circles;
            int circleCount = circles.Count();
            DisplayMessage($"读取到圆Circle的个数为【{circleCount}】");
            for (int i = 0; i < circleCount; i++)
            {
                Circle circle = circles.ElementAt(i);
                DisplayMessage($"\x20\x20圆【{(i + 1).ToString("D3")}】,圆心坐标【({circle.Center})】,半径【{circle.Radius}】");
            }            
        }

        private void btnExportCsv_Click(object sender, EventArgs e)
        {
            DrawingEntities drawingEntities = rtxtMessage.Tag as DrawingEntities;
            if (drawingEntities == null) 
            {
                return;
            }
            List<Tuple<Vector3, double, string>> coordList = new List<Tuple<Vector3, double, string>>();
            IEnumerable<Circle> circles = drawingEntities.Circles;
            int circleCount = circles.Count();//找出所有的圆
            for (int i = 0; i < circleCount; i++)
            {
                Circle circle = circles.ElementAt(i);
                //元组：圆心坐标，半径，活动设计名
                coordList.Add(Tuple.Create(circle.Center, circle.Radius, drawingEntities.ActiveLayout));
            }
            string fileName = AppDomain.CurrentDomain.BaseDirectory + "testFile\\蓝本.csv";
            bool result = CsvUtil.WriteCoordinateLogCsv(fileName, coordList);
            MessageBox.Show($"导出csv文件结果【{result}】\n路径：{fileName}");
        }

        private void FormDxfTool_Load(object sender, EventArgs e)
        {
            /*
             * 1、读取dxf文件的思路
新建DxfDocument对象-调用Load方法读取对应地址的dxf文件并保存在新建的DxfDocument对象中-从新建的DxfDocument对象中读取对应的元素
读取dxf文件：
DxfDocument dxf = DxfDocument.Load("蓝本.dxf");

关键结构 netDxf.Vector3
            可以认为是立体三维坐标(x,y,z)
关键结构 netDxf.Vector2
            可以认为是平面二维坐标(x,y)
 读取文件中的核心属性：
Entities:
对应类型 netDxf.Collections.DrawingEntities
            密封类DrawingEntities由一系列【点、线、圆等】集合组成，允许直接访问与图形中实体相关的操作
netDxf.Entities.EntityObject:
        Gets the complete list entities contained in the active layout.
        抽象类，以下所有实体对象的父类

netDxf.Entities.PolyfaceMesh:
    Represents a polyface mesh entity.

netDxf.Entities.Text:
    Gets the list of texts in the active layout.
           
 netDxf.Entities.MText:       
     Gets the list of multiline texts in the active layout.

 netDxf.Entities.Hatch:       
     Gets the list of hatches in the active layout.

 netDxf.Entities.Image:     
     Gets the list of images in the active layout.
 
netDxf.Entities.Mesh:      
        Gets the list of mesh in the active layout.
 
netDxf.Entities.Leader:        
        Gets the list of leader in the active layout.
             
netDxf.Entities.Point:
        Gets the list of points in the active layout.
        
netDxf.Entities.Tolerance:
        Gets the list of tolerance in the active layout.
        
netDxf.Entities.MLine:
        Gets the list of multilines in the active layout.
        
netDxf.Entities.Dimension:
        Gets the list of dimensions in the active layout.
        
netDxf.Entities.Spline:
        Gets the list of splines in the active layout.
         
netDxf.Entities.Ray:
        Gets the list of rays in the active layout.

netDxf.Entities.Viewport:        
        Gets the list of viewports in the active layout.

netDxf.Entities.XLine:
        Gets the list of extension lines in the active layout.
        
netDxf.Entities.Underlay:
        Gets the list of underlay in the active layout.
       
netDxf.Entities.PolygonMesh:
        Gets the list of polygon meshes in the active layout.

netDxf.Entities.AttributeDefinition:
        Gets the list of attribute definitions in the active layout.

netDxf.Entities.Polyline3D:
        Gets the list of polylines in the active layout.

netDxf.Entities.Arc:
        Gets the list of arcs contained in the active layout. 

netDxf.Entities.Ellipse:
        Gets the list of ellipses in the active layout.

netDxf.Entities.Wipeout:
        Gets the list of wipeouts in the active layout. 

netDxf.Entities.Face3D:
        Gets the list of 3d faces in the active layout.

netDxf.Entities.Circle:
        Gets the list of circles in the active layout.

netDxf.Entities.Trace:
        Gets the list of traces in the active layout.

netDxf.Entities.Insert:
        Gets the list of inserts in the active layout.

netDxf.Entities.Line:
        Gets the list of lines in the active layout.

netDxf.Entities.Shape:
        Gets the list of shapes in the active layout.

netDxf.Entities.Polyline2D:
        Gets the list of polylines in the active layout.

netDxf.Entities.Solid:
        Gets the list of solids in the active layout.            
            */
        }
    }
}

六、运行效果如图：

【获取所有半径为3的圆极柱】

导出csv

?