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
