CAD二次实验报告2.docx

CAD开发实验（二）实验二 AutoCAD基本图形对象创建与编辑一、主要内容1、 创建直线2、 创建圆3、 创建圆弧4、 创建多段线5、 创建椭圆6、 样条曲线7、 创建面域8、 创建文字9、 创建填充10、 创建尺寸标注11、 创建三维实体二、学时安排三、预习内容回顾AutoCAD图形对象创建的一般过程。四、基本图形对象创建与编辑4.1 基本图形对象创建4.1.1创建直线代码：CommandMethod(CreatLine) public void CreatLine() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans=db.TransactionManager .StartTransaction() ) /creatline Point3d pt1=new Point3d (20,20,0); Point3d pt2=new Point3d (100,100,0); Line lineEnt = new Line(pt1, pt2); BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr=(BlockTableRecord )trans.GetObject (btBlockTableRecord.ModelSpace,OpenMode .ForWrite); PModifyEntID=btr.AppendEntity(lineEnt); trans.AddNewlyCreatedDBObject (lineEnt,true ); trans.Commit(); CommandMethod(ModifyLine) public void ModifyLine() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Entity pEnt = (Entity)trans.GetObject(PModifyEntID, OpenMode.ForWrite); pEnt.ColorIndex = 1; pEnt.Close(); trans.Commit(); 4.1.2创建圆代码：CommandMethod(Cir) public void Circle() /声明圆对象 Circle c = new Circle(); c.Center = new Point3d(0, 0, 0); c.Radius = 100; Database db = HostApplicationServices.WorkingDatabase; /启动事务 using (Transaction trans = db.TransactionManager.StartTransaction() /创建块表 BlockTable c_block = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead);/读取，0 BlockTableRecord c_block_record = (BlockTableRecord)trans.GetObject(c_blockBlockTableRecord.ModelSpace, OpenMode.ForWrite);/写入,1 c_block_record.AppendEntity(c);/块表记录追加实体，把图形对象的记录加入到块表记录 trans.AddNewlyCreatedDBObject(c, true);/将圆添加到事务处理中 trans.Commit();/提交事务 4.1.3创建圆弧代码：/创建圆弧 CommandMethod(CreatAre) public void CreatArc() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Arc pArc = new Arc(new Point3d(50, 50, 0), 100, 0, 100); BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(pArc); trans.AddNewlyCreatedDBObject(pArc, true); trans.Commit(); 4.1.4创建多段线代码：/创建多段线 CommandMethod(CPloyline) public void createPloyline1() Polyline pl = new Polyline(5); Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Point2d p1 = new Point2d(50, 10); Point2d p2 = new Point2d(100, 30); Point2d p3 = new Point2d(150, 60); Point2d p4 = new Point2d(200, 90); Point2d p5 = new Point2d(250, 120); Point2dCollection pc = new Point2dCollection(); pc.Add(p1); pc.Add(p2); pc.Add(p3); pc.Add(p4); pc.Add(p5); for (int i = 0; i 5; i+) pl.AddVertexAt(i, pci, 0.5, 5, 5); BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(pl); trans.AddNewlyCreatedDBObject(pl, true); trans.Commit(); 4.1.5创建椭圆代码：/创建椭圆 CommandMethod(CEllipse) public void Ellipse() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Ellipse pEllipse = new Ellipse(new Point3d(150, 150, 0), new Vector3d(0, 0, 50), new Vector3d(50, 50, 0), 0.8, 0, 0); BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(pEllipse); trans.AddNewlyCreatedDBObject(pEllipse, true); trans.Commit(); 4.1.6样条曲线代码：/创建样条曲线 CommandMethod(CSpline) public void CreateSpline() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Point3d p1 = new Point3d(50, 30, 0); Point3d p2 = new Point3d(100, 60, 0); Point3d p3 = new Point3d(150, 520, 0); Point3d p4 = new Point3d(200, 240, 0); Point3d p5 = new Point3d(250, 300, 0); Point3dCollection pc = new Point3dCollection(); pc.Add(p1); pc.Add(p2); pc.Add(p3); pc.Add(p4); pc.Add(p5); Spline spline = new Spline(pc, 2, 5); BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(spline); trans.AddNewlyCreatedDBObject(spline, true); trans.Commit(); 4.1.7创建面域代码：/创建面域 CommandMethod(CPolygon) public void CreatePolygon() Database db = HostApplicationServices.WorkingDatabase; using (Transaction Trans = db.TransactionManager.StartTransaction() Point3d center = new Point3d(50, 50, 0); Circle entity = new Circle(center, Vector3d.ZAxis, 150); DBObjectCollection curveSegments = new DBObjectCollection(); DBObjectCollection regions = new DBObjectCollection(); curveSegments.Add(entity); regions = Region.CreateFromCurves(curveSegments); Region newRegion = (Region)regions0; newRegion.SetDatabaseDefaults(); BlockTable bt = (BlockTable)Trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)Trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(newRegion); Trans.AddNewlyCreatedDBObject(newRegion, true); Trans.Commit(); 4.1.8创建文字代码：/创建文字 CommandMethod(AddText) public void AddText() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() DBText text = new DBText(); text.Position = new Point3d(5, 5, 0); text.ColorIndex = 3; text.TextString = 欢迎来到CAD！; MText text1 = new MText(); text1.Color =Autodesk.AutoCAD.Colors.Color.FromColorIndex(Autodesk.AutoCAD.Colors.ColorMethod.ByAci, 2); BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(text); btr.AppendEntity(text1); trans.AddNewlyCreatedDBObject(text, true); trans.AddNewlyCreatedDBObject(text1, true); trans.Commit(); 4.1.9创建填充代码： /创建填充 CommandMethod(AddHatch) public void AddHatch() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Circle circle = new Circle(); circle.Center = new Point3d(150, 150, 0); circle.Radius = 200; BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForRead); BlockTableRecord btr = (BlockTableRecord)trans.GetObject(btBlockTableRecord.ModelSpace, OpenMode.ForWrite); btr.AppendEntity(circle); trans.AddNewlyCreatedDBObject(circle, true); ObjectIdCollection collection = new ObjectIdCollection(); collection.Add(circle.ObjectId); Hatch hatch = new Hatch(); hatch.Elevation = 0; hatch.HatchStyle = HatchStyle.Normal; hatch.ColorIndex = 5; hatch.SetHatchPattern(HatchPatternType.PreDefined, SOLID); hatch.AppendLoop(HatchLoopTypes.Default, collection); hatch.EvaluateHatch(true); btr.AppendEntity(hatch); trans.AddNewlyCreatedDBObject(hatch, true); trans.Commit(); 4.1.10创建标注代码：/ 创建半径标注 CommandMethod(CRadialDimension) public static void CreateRadialDimension() Document acDoc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument; Database acCurDb = acDoc.Database; using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction() BlockTable acBlkTbl;acBlkTbl = acTrans.GetObject(acCurDb.BlockTableId,OpenMode.ForRead) as BlockTable; BlockTableRecord acBlkTblRec; acBlkTblRec = acTrans.GetObject(acBlkTblBlockTableRecord.ModelSpace, OpenMode.ForWrite) as BlockTableRecord; RadialDimension acRadDim = new RadialDimension(); acRadDim.SetDatabaseDefaults(); acRadDim.Center = new Point3d(0, 0, 0); acRadDim.ChordPoint = new Point3d(25, 25, 0); acRadDim.LeaderLength = 5; acRadDim.DimensionStyle = acCurDb.Dimstyle; acBlkTblRec.AppendEntity(acRadDim); acTrans.AddNewlyCreatedDBObject(acRadDim, true); acTrans.Commit(); 4.1.11创建三维实体代码：/创建三维实体 CommandMethod(Create3DSolid) public void Create3DSolid() Database db = HostApplicationServices.WorkingDatabase; using (Transaction trans = db.TransactionManager.StartTransaction() Point3d p1 = new Point3d(50, 50