CAD插件程序开发

2022-10-06 16:43:59

凡是根据参数生成固定图形的，CAD插件程序都可以胜任。

效果展示：

1，命令行：

2，右键菜单：

3，工具条，CAD内嵌界面，和winform一样简单

闲话少说，直接上原理和代码：

 
0,
项目效果查看：
a:在CAD2006的命令行输入netload，加载Test.dll
b1:在命令行输入helloworld可以看到命令功能
b2:右键可以看到右键菜单，画一个红色的圆
b3:左边工具面板多了一个工具条，有个界面可以输入各种参数来画一个组合图形


1，建一个xindows窗体程序项目，设置输出为类库
2，引用acdbmgd.dll和acmgd.dll
3，引用如下命名空间
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Windows.ToolPalette;
using Autodesk.AutoCAD.Windows;


4，在Form1上规划界面和后台代码。重点看代码如何实现

5，计划是CAD上增加一个面板按钮，点击按钮就打开Form1来自动画图。
这里我们加一个用户控件，拖一个按钮，按钮方法写：
Form1 modalForm = new Form1(); 
Autodesk.AutoCAD.ApplicationServices.Application.ShowModalDialog(modalForm);
注意这里仅仅是打开的窗体的方式选择了AutoCAD的方式。 
想建立一整套工具栏，就多拉几个按钮。按4的方法写好每个按钮执行的代码（可以要个Form1这样的界面，也可以不要，*选择）

6,把这个项目导出还需要一个类来辅助
先看初始化Initialize()和Terminate()方法。这里给CAD加了一个面板工具栏和右键菜单，以及一些命令行

1，这个class1类分别演示了命令行、右键菜单、工具条的实现。注释得非常清楚了，就不做多解释。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Windows.ToolPalette;
using Autodesk.AutoCAD.Windows;

namespace Test
{
    public class Class1 : Autodesk.AutoCAD.Runtime.IExtensionApplication
    {
        ContextMenuExtension m_ContextMenu;//定义右键菜单
        PaletteSet palSet;//定义工具栏按钮

        //初始化方法，这里加了一个面板工具栏和右键菜单。如果不要右键菜单，注释即可
        public void Initialize()
        {
            AddContextMenu();//添加面板工具栏
            AddPalette();//添加右键菜单
        }

        //卸载方法
        public void Terminate()
        {
            RemoveContextMenu();
        }


        //有CommandMethod标注，是提供给CAD使用的命令
        [CommandMethod("HelloWorld")]
        public void HelloWorld()
        {
            //这段代码的作用是弹出一个提示
            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
            ed.WriteMessage("深渊码奴编写：第一个外部门程序CAD！");
        }



        #region 添加一个右键菜单，并实现画一个圆的功能
        /// <summary>点击响应事件，创建一个圆
        ///
        /// </summary>
        /// <param name="o"></param>
        /// <param name="e"></param>
        private void MyMenuItem_OnClick(object o, EventArgs e)
        {
            using (DocumentLock doclock = Application.DocumentManager.MdiActiveDocument.LockDocument())
            {
                //创建一个红色的圆
                Database db = HostApplicationServices.WorkingDatabase;
                using (Transaction trans = db.TransactionManager.StartTransaction())
                {
                    BlockTable bt = trans.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
                    BlockTableRecord btr = trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
                    Circle cir = new Circle(new Point3d(10, 10, 0), Vector3d.ZAxis, 100);
                    cir.ColorIndex = 1;
                    btr.AppendEntity(cir);
                    trans.AddNewlyCreatedDBObject(cir, true);
                    trans.Commit();
                }
            }
        }

        /// <summary>添加右键菜单项
        ///
        /// </summary>
        private void AddContextMenu()
        {
            m_ContextMenu = new ContextMenuExtension();
            m_ContextMenu.Title = "深渊码奴的自定义菜单";
            Autodesk.AutoCAD.Windows.MenuItem mi;
            mi = new Autodesk.AutoCAD.Windows.MenuItem("创建圆");
            //关联菜单项的处理函数
            mi.Click += MyMenuItem_OnClick;
            m_ContextMenu.MenuItems.Add(mi);

            Application.AddDefaultContextMenuExtension(m_ContextMenu);
        }
        /// <summary>移除菜单项
        ///
        /// </summary>
        private void RemoveContextMenu()
        {
            if (m_ContextMenu != null)
            {

                Application.RemoveDefaultContextMenuExtension(m_ContextMenu);
                m_ContextMenu = null;
            }
        }
        #endregion


        [CommandMethod("ShowModalForm")]
        public void ShowModalForm()
        {
            Form1 modalForm = new Form1();
            Autodesk.AutoCAD.ApplicationServices.Application.ShowModalDialog(modalForm);
        }

        [CommandMethod("AddPalette")]
        public void AddPalette()
        {
            Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
            try
            {
                if (palSet == null)
                {
                    palSet = new Autodesk.AutoCAD.Windows.PaletteSet("我的面板集");

                    palSet.Style = PaletteSetStyles.ShowTabForSingle;
                    palSet.Style = PaletteSetStyles.NameEditable;
                    palSet.Style = PaletteSetStyles.ShowPropertiesMenu;
                    palSet.Style = PaletteSetStyles.ShowAutoHideButton;
                    palSet.Style = PaletteSetStyles.ShowCloseButton;
                    palSet.Opacity = 90;
                    palSet.MinimumSize = new System.Drawing.Size(300, 300);
                    System.Windows.Forms.UserControl myPageCtrl = new ModelessForm();//注意这里是加载自己写的用户控件
                    //myPageCtrl.Dock = System.Windows.Forms.DockStyle.Fill;
                    palSet.Add("我的页面", myPageCtrl);
                    palSet.Visible = true;
                }
            }

            catch
            {
                ed.WriteMessage("创建面板集错误");
            }


        }



    }
}

2，CAD展现工具条，添加一个用户控件，取名为ModelessForm。两行代码显示Form1窗体而已。

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

namespace Test
{
    public partial class ModelessForm : UserControl
    {
        public ModelessForm()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form1 modalForm = new Form1();
            Autodesk.AutoCAD.ApplicationServices.Application.ShowModalDialog(modalForm);
        }
    }
}

　　3，Form1窗体的功能，是根据长宽画一个矩形，矩形的四个角分别画一个圆。因为在CAD里运行，所以使用的类库和正常C#的不同。这里是实现的重点，根据需要写自己的代码。class1类是一个框架，基本不用改。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Windows.ToolPalette;
using Autodesk.AutoCAD.Windows;
namespace Test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        float C;//长
        float K;//宽
        /// <summary> 画CAD图，根据计算出的坐标
        ///
        /// </summary>
        void drawCAD()
        {
            Point3d p0 = new Point3d(0,0,0);
            Point3d p1 = new Point3d(C,0,0);
            Point3d p2 = new Point3d(C, K, 0);
            Point3d p3 = new Point3d(0, K, 0);

            using (DocumentLock doclock = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument())
            {
                //
                Database db = HostApplicationServices.WorkingDatabase;
                using (Transaction trans = db.TransactionManager.StartTransaction())
                {
                    BlockTable bt = trans.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
                    BlockTableRecord btr = trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;


                    //画4条直线的矩形
                    List<Line> lins = new List<Line>();
                    lins.Add(new Line(p0, p1));
                    lins.Add(new Line(p1, p2));
                    lins.Add(new Line(p2, p3));
                    lins.Add(new Line(p3, p0));
                    foreach (Line line in lins)
                    {
                        btr.AppendEntity(line);
                        trans.AddNewlyCreatedDBObject(line, true);
                    }


                    //画圆，这里直接用矩形的四个点来画
                    List<Point3d> points = new List<Point3d>();
                    points.Add(p0);
                    points.Add(p1);
                    points.Add(p2);
                    points.Add(p3);
                    List<Circle> cirs = new List<Circle>();
                    foreach (Point3d p3d in points)
                    {
                        int R = 20;
                        cirs.Add(new Circle(p3d, Vector3d.ZAxis, R));
                    }
                    foreach (Circle cir in cirs)
                    {
                        cir.ColorIndex = 1;
                        btr.AppendEntity(cir);
                        trans.AddNewlyCreatedDBObject(cir, true);
                    }

                    trans.Commit();
                }
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.C = Convert.ToInt32(this.textBox1.Text);//int转成float一定可以，所以可以把int的值直接赋给float
            this.K = Convert.ToInt32(this.textBox2.Text);
            this.drawCAD();
            this.Close();
        }
    }
}

整个工程打包上来，有兴趣的朋友跑起来玩玩。很少写博客，

http://files.cnblogs.com/files/zkp2010/CAD%E6%8F%92%E4%BB%B6%E5%BC%80%E5%8F%91%E2%80%94%E2%80%94%E4%BB%A5CAD2006%E4%B8%BA%E4%BE%8B.rar

CAD插件技术真心不难，无非是画点线条，CAD内部能实现的，C#调用acdbmgd.dll和acmgd.dll也能实现。

码农公寓

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