public void CreateRegion1()
{
ObjectId loopId1 = ModelSpace.AddLine(new Point3d(100, 0, 0), new Point3d(0, 0, 0));
ObjectId loopId2 = ModelSpace.AddLine(new Point3d(100, 0, 0), new Point3d(80, 60, 0));
ObjectId loopId3 = ModelSpace.AddLine(new Point3d(80, 60, 0), new Point3d(0, 0, 0));
DBObject ent1;
DBObject ent2;
DBObject ent3;
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
ent1 = (Entity)trans.GetObject(loopId1, OpenMode.ForWrite);
ent2 = (Entity)trans.GetObject(loopId2, OpenMode.ForWrite);
ent3 = (Entity)trans.GetObject(loopId3, OpenMode.ForWrite);
trans.Commit();
}
DBObjectCollection objIds = new DBObjectCollection();
objIds.Add(ent1);
objIds.Add(ent2);
objIds.Add(ent3);
ObjectIdCollection regionId = ModelSpace.AddRegion(objIds);
}
public void CreateRegion2()
{
// 在内存中创建面域的边界对象.
Line ent1 = new Line(new Point3d(100, 0, 0), new Point3d(0, 0, 0));
Line ent2 = new Line(new Point3d(100, 0, 0), new Point3d(80, 60, 0));
Line ent3 = new Line(new Point3d(80, 60, 0), new Point3d(0, 0, 0));
Circle ent4 = new Circle(new Point3d(200, 50, 0), Vector3d.ZAxis, 60);
// 边界对象添加到对象集合.
DBObjectCollection ents = new DBObjectCollection();
ents.Add(ent1);
ents.Add(ent2);
ents.Add(ent3);
ents.Add(ent4);
// 创建面域并加入到图形数据库.
ObjectIdCollection regionIds = ModelSpace.AddRegion(ents);
}
