在C#中编写AutoCAD插件,可以使用AutoCAD .NET API,以下是实现QQ命令的代码:
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
namespace MyCommands
{
public class Commands
{
[CommandMethod("QQ")]
public void QQCommand()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
using (Transaction tr = db.TransactionManager.StartTransaction())
{
BlockTableRecord btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
// 绘制45度直线
Point3d startPoint = new Point3d(0, 0, 0);
Point3d endPoint = new Point3d(10, 10, 0);
Line line = new Line(startPoint, endPoint);
line.ColorIndex = 1;
btr.AppendEntity(line);
tr.AddNewlyCreatedDBObject(line, true);
// 绘制直角三角形
Point3d p1 = new Point3d(0, 0, 0);
Point3d p2 = new Point3d(10, 0, 0);
Point3d p3 = new Point3d(0, 5, 0);
Line l1 = new Line(p1, p2);
Line l2 = new Line(p1, p3);
Line l3 = new Line(p2, p3);
l1.ColorIndex = 2;
l2.ColorIndex = 3;
l3.ColorIndex = 4;
btr.AppendEntity(l1);
btr.AppendEntity(l2);
btr.AppendEntity(l3);
tr.AddNewlyCreatedDBObject(l1, true);
tr.AddNewlyCreatedDBObject(l2, true);
tr.AddNewlyCreatedDBObject(l3, true);
tr.Commit();
ed.WriteMessage("绘制QQ图形成功!");
}
}
}
}
注意,该代码需在AutoCAD .NET API应用程序中才能运行。最简单的方法是将上述代码粘贴到Visual Studio中的新项目中,并将项目类型设置为Class Library (DLL)。在项目属性中添加对AcCoreMgd.dll、AcDbMgd.dll和AcMgd.dll的引用。构建项目以生成DLL文件。在AutoCAD中加载该DLL文件以使用QQ命令。