利用C#二次开发autocad.net

flypig2005

2005年07月07日 11:34:03

2楼

下面是我做的几个小例子:圆的填充,定点填充和直线裁剪
[CommandMethod("try1")]
//圆的填充
public void ttt()
{
Point3d center = new Point3d(10, 10,0);

Circle circle = new Circle(center, Vector3d.ZAxis, 50);

//BulgeVertex bv=new BulgeVertex(new Point2d(10,10),0);

//bv.Equals(circle);
//HatchLoop hl=new HatchLoop();

//hl.Add(bv);

Hatch myha=new Hatch();
myha.PatternScale=1;
myha.SetHatchPattern(HatchPatternType.PreDefined,"HEX");

//myha.HatchStyle=HatchStyle.Normal;

ObjectIdCollection obs=new ObjectIdCollection();
ObjectId id = AddEntity(circle);
obs.Add(id);

myha.AppendLoop(0,obs);
myha.EvaluateHatch(true);
//ObjectId id = AddEntity(circle);
ObjectId id1 = AddEntity(myha);

}

[CommandMethod("try2")]
//三点填充
public void ttt2()
{
BulgeVertex bv1=new BulgeVertex(new Point2d(10,10),0);
BulgeVertex bv2=new BulgeVertex(new Point2d(30,10),0);
BulgeVertex bv3=new BulgeVertex(new Point2d(30,30),0);
BulgeVertex bv4=new BulgeVertex(new Point2d(10,10),0);

HatchLoop hl=new HatchLoop();

hl.Add(bv1);
hl.Add(bv2);
hl.Add(bv3);
hl.Add(bv4);
Hatch myha=new Hatch();
myha.PatternScale=0.2;
myha.SetHatchPattern(HatchPatternType.PreDefined,"CROSS");

myha.AppendLoop(hl);
myha.EvaluateHatch(true);
ObjectId id1 = AddEntity(myha);

}

[CommandMethod("try3")]
public void ttt3()
//直线裁剪
{

Line l1=new Line();

l1.StartPoint=new Point3d(10,10,0);
l1.EndPoint=new Point3d(100,100,0);
Line l2=new Line();
l2.StartPoint=new Point3d(10,100,0);
l2.EndPoint=new Point3d(100,10,0);
Point3dCollection p1=new Point3dCollection();
l1.IntersectWith(l2,Intersect.ExtendArgument,p1,0,0);
Point3d pt=new Point3d(p1[0].X,p1[0].Y,p1[0].Z);

l1.EndPoint=pt;
ObjectId ob=AddEntity(l1);
ObjectId ob2=AddEntity(l2);

}
public static ObjectId AddEntity(Entity ent)
{Transaction trans = HostApplicationServices.WorkingDatabase.TransactionManager.StartTransaction();
Database Db=HostApplicationServices.WorkingDatabase;
try
{
BlockTable bt =
(BlockTable)trans.GetObject(Db.BlockTableId, OpenMode.ForWrite, false);
BlockTableRecord btr =
(BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace],
OpenMode.ForWrite, false);
btr.AppendEntity(ent);
trans.AddNewlyCreatedDBObject(ent, true);
trans.Commit();

return ent.ObjectId;

}
catch (System.Exception e)
{
throw e;
}
}

beau518

2005年07月07日 16:58:03

3楼

我希望这个帖子能继续下去，也希望这个帖子能成为cad应用的经典帖子，楼主好好努力！
谢谢对本站的支持！

flypig2005

2005年07月11日 19:38:52

4楼

今天学习如何在autocad.net中右键弹出一个菜单并使用circle命令画圆.
autocad中做菜单用到ContextMenuExtension,我们可以新构件一个ContextMenuExtension类(用过C++的朋友应该很熟悉类的构造方法)并做设置,用来实现某些功能!
public class MyContextMenu : ContextMenuExtension
{
private MenuItem m_main = new MenuItem("MAIN MENU");
private MenuItem m_sub0 = new MenuItem("SUBMENU 0");
private MenuItem m_sub1 = new MenuItem("SUBMENU 1");
private MenuItem m_sub2 = new MenuItem("SUBMENU 2");

static public bool m_bShowExtraMenus = true;

public MyContextMenu()
{
this.Title = "Test";//菜单名称
this.MenuItems.Add(m_main);
m_main.MenuItems.Add(m_sub0);//弹出式PopupMenu名称
m_main.MenuItems.Add(m_sub1);

this.Popup += new EventHandler(OnUpdateMenu);//主菜单响应事件

m_sub0.Click += new EventHandler(OnClick);
m_sub1.Click += new EventHandler(OnClick);
m_sub2.Click += new EventHandler(OnClick);
}

void OnClick(object sender, EventArgs e)
{
}

void OnUpdateMenu(object sender, EventArgs e)
{

//开始不加m_sub2,发现没有加上,有了减去
if (MyContextMenu.m_bShowExtraMenus)
{
if (!m_main.MenuItems.Contains(m_sub2))
{
m_main.MenuItems.Add(m_sub2);
}
}
else
{
if (m_main.MenuItems.Contains(m_sub2))
{
m_main.MenuItems.Remove(m_sub2);
}

}

MyContextMenu.m_bShowExtraMenus =!MyContextMenu.m_bShowExtraMenus;
}
}

构件好这个类后就可以使用了:

[CommandMethod("TEST")]
public static void DoIt()
{
Application.DocumentManager.MdiActiveDocument.Editor.WriteMessage("注册一个画圆的菜单!\n");

MyContextMenu cme = new MyContextMenu();

Application.AddObjectContextMenuExtension(RXObject.GetClass(typeof
(Circle)), cme);
}
}

flypig2005

2005年07月11日 19:51:07

5楼

如何在autocad中插入已知文件的块?
假设我们想插入c:\aaa.dwg 中一个块"my_block";

[CommandMethod("testinsert")]
static public void DoIt()
{
Document doc =
Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
//定义文档
string fname = @"C:\aaa.dwg";
try
{
if ( ! File.Exists(fname))
fname = HostApplicationServices.Current.FindFile(fname,doc.Database,FindFileHint.Default);
Database db = new Database(false, false);
db.ReadDwgFile(fname, FileShare.Read, true, null);//读文件
Transaction t =doc.TransactionManager.StartTransaction();
ObjectId idBTR = doc.Database.Insert("my_block",db,false);
//数据库中插入我们定义的块
BlockTable bt =(BlockTable)t.GetObject(doc.Database.BlockTableId, OpenMode.ForRead);
BlockTableRecord btr =(BlockTableRecord)t.GetObject(bt[BlockTableRecord.ModelSpace],
OpenMode.ForWrite);
BlockReference bref = new BlockReference(Point3d.Origin, idBTR);
//以上定义块,块记录和索引

btr.AppendEntity(bref);
t.AddNewlyCreatedDBObject(bref, true);

t.Commit();
}
finally
{t.Dispose();
}
}