在AutoCAD 2008中实现Loft放样

ahlzl · 发表于 2010-5-12 09:36:00

代码如下，注意要多添加一个引用，见附件。

using System;
using Autodesk.AutoCAD.ahlzl;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
namespace Cs_调用
{
public class Class1
{
[CommandMethod("Test")]
public void Test()
{
Polyline ent1 = new Polyline();
ent1.AddVertexAt(0, new Point2d(50, 50), 0, 0, 0);
ent1.AddVertexAt(1, new Point2d(-50, 50), 0, 0, 0);
ent1.AddVertexAt(2, new Point2d(-50, -50), 0, 0, 0);
ent1.AddVertexAt(3, new Point2d(50, -50), 0, 0, 0);
ent1.Closed = true;
Circle ent2 = new Circle(new Point3d(0, 0, 200), new Vector3d(0, 0, 1), 30);
Entity[] crossEnts = new Entity[2];
crossEnts.SetValue(ent1, 0);
crossEnts.SetValue(ent2, 1);
Entity[] guideCurs = new Entity[0];
LoftOptions loftOpt = new LoftOptions();
Solid3d loftEnt = DNA.CreateLoftedSolid(crossEnts, guideCurs, null, loftOpt);
AppendEntity(loftEnt);
}
private ObjectId AppendEntity(Entity ent)
{
ObjectId entId;
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId,
OpenMode.ForRead);
BlockTableRecord btr = (BlockTableRecord)trans.GetObject
(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);
entId = btr.AppendEntity(ent);
trans.AddNewlyCreatedDBObject(ent, true);
trans.Commit();
}
return entId;
}
}
}

using System;
using Autodesk.<a href="http://bbs.mjtd.com/forum-41-1.html" target="_blank" class="relatedlink">AutoCAD</a>.ahlzl;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
namespace Cs_调用
{
    public class Class1
    {
        [CommandMethod("Test")]
        public void Test()
        {
            Polyline ent1 = new Polyline();
            ent1.AddVertexAt(0, new Point2d(50, 50), 0, 0, 0);
            ent1.AddVertexAt(1, new Point2d(-50, 50), 0, 0, 0);
            ent1.AddVertexAt(2, new Point2d(-50, -50), 0, 0, 0);
            ent1.AddVertexAt(3, new Point2d(50, -50), 0, 0, 0);
            ent1.Closed = true;
            Circle ent2 = new Circle(new Point3d(0, 0, 200), new Vector3d(0, 0, 1), 30);
            Entity[] crossEnts = new Entity[2];
            crossEnts.SetValue(ent1, 0);
            crossEnts.SetValue(ent2, 1);
            Entity[] guideCurs = new Entity[0];
            LoftOptions loftOpt = new LoftOptions();
            Solid3d loftEnt = DNA.CreateLoftedSolid(crossEnts, guideCurs, null, loftOpt);
            AppendEntity(loftEnt);
        }
        private ObjectId AppendEntity(Entity ent)
        {
            ObjectId entId;
            Database db = HostApplicationServices.WorkingDatabase;
            using (Transaction trans = db.TransactionManager.StartTransaction())
            {
                BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId,
                    OpenMode.ForRead);
                BlockTableRecord btr = (BlockTableRecord)trans.GetObject
                    (bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite);
                entId = btr.AppendEntity(ent);
                trans.AddNewlyCreatedDBObject(ent, true);
                trans.Commit();
            }
            return entId;
        }
    }
}

Linxian1028 · 发表于 2022-9-23 17:08:43

在哪可以转成VB.net的.

Crazyhoof · 发表于 2010-5-12 09:56:00

请问楼主，在vb.net中不支持null。solid3dEnt.CreateLoftedSolid(crossEnts, guideCurs, Null, loftOpt) 这句话要怎么改呢？

雪山飞狐_lzh · 发表于 2010-5-12 13:05:00

Nothing?

Crazyhoof · 发表于 2010-5-12 14:14:00

不是nothing，如果这样的话，提示：“未将对象引用设置到对象的实例”。不知道怎么改了。

Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.Colors
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.EditorInput
Imports Autodesk.AutoCAD.Geometry
Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.GraphicsSystem
Imports Autodesk.AutoCAD.Windows
Imports Autodesk.AutoCAD.Publishing
Imports Autodesk.AutoCAD.PlottingServices
Imports Autodesk.AutoCAD.ComponentModel
Imports Autodesk.AutoCAD.LayerManager
Public Class Class1
<CommandMethod("tt")> _
Sub 天圆地方()
Try
Dim Ed As Editor = Application.DocumentManager.MdiActiveDocument.Editor
Dim db As Database = HostApplicationServices.WorkingDatabase
Dim ent1 As Polyline = New Polyline()
ent1.AddVertexAt(0, New Point2d(50, 50), 0, 0, 0)
ent1.AddVertexAt(1, New Point2d(-50, 50), 0, 0, 0)
ent1.AddVertexAt(2, New Point2d(-50, -50), 0, 0, 0)
ent1.AddVertexAt(3, New Point2d(50, -50), 0, 0, 0)
ent1.Closed = True
Dim ent2 As Circle = New Circle(New Point3d(0, 0, 200), New Vector3d(0, 0, 1), 30)
Dim crossEnts(1) As Entity
crossEnts.SetValue(ent1, 0)
crossEnts.SetValue(ent2, 1)
Dim guideCurs(0) As Entity
Dim loftOpt As LoftOptions = New LoftOptions()
Dim solid3dEnt As Solid3d = New Solid3d()
solid3dEnt.RecordHistory = True
solid3dEnt.CreateLoftedSolid(crossEnts, guideCurs, Nothing, loftOpt)
AppendEntity(ent1)
Catch ex As System.Exception
MsgBox("Error: " + ex.Message)
Finally
End Try
End Sub
Function AppendEntity(ByVal ent As Entity) As ObjectId
Dim db As Database = HostApplicationServices.WorkingDatabase
Dim entId As ObjectId
Using trans As Transaction = db.TransactionManager.StartTransaction()
Dim bt As BlockTable = trans.GetObject(db.BlockTableId, OpenMode.ForRead)
Dim Btr As BlockTableRecord = trans.GetObject(bt.Item(BlockTableRecord.ModelSpace), OpenMode.ForWrite)
entId = Btr.AppendEntity(ent)
trans.AddNewlyCreatedDBObject(ent, True)
trans.Commit()
End Using
Return entId
End Function
End Class

Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.Colors
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.EditorInput
Imports Autodesk.AutoCAD.Geometry
Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.GraphicsSystem
Imports Autodesk.AutoCAD.Windows
Imports Autodesk.AutoCAD.Publishing
Imports Autodesk.AutoCAD.PlottingServices
Imports Autodesk.AutoCAD.ComponentModel
Imports Autodesk.AutoCAD.LayerManager
Public Class Class1
    <CommandMethod("tt")> _
    Sub 天圆地方()
        Try
            Dim Ed As Editor = Application.DocumentManager.MdiActiveDocument.Editor
            Dim db As Database = HostApplicationServices.WorkingDatabase
            Dim ent1 As Polyline = New Polyline()
            ent1.AddVertexAt(0, New Point2d(50, 50), 0, 0, 0)
            ent1.AddVertexAt(1, New Point2d(-50, 50), 0, 0, 0)
            ent1.AddVertexAt(2, New Point2d(-50, -50), 0, 0, 0)
            ent1.AddVertexAt(3, New Point2d(50, -50), 0, 0, 0)
            ent1.Closed = True
            Dim ent2 As Circle = New Circle(New Point3d(0, 0, 200), New Vector3d(0, 0, 1), 30)
            Dim crossEnts(1) As Entity
            crossEnts.SetValue(ent1, 0)
            crossEnts.SetValue(ent2, 1)
            Dim guideCurs(0) As Entity
            Dim loftOpt As LoftOptions = New LoftOptions()
            Dim solid3dEnt As Solid3d = New Solid3d()
            solid3dEnt.RecordHistory = True
            solid3dEnt.CreateLoftedSolid(crossEnts, guideCurs, Nothing, loftOpt)
            AppendEntity(ent1)
        Catch ex As System.Exception
            MsgBox("Error: " + ex.Message)
        Finally
        End Try
    End Sub
    Function AppendEntity(ByVal ent As Entity) As ObjectId
        Dim db As Database = HostApplicationServices.WorkingDatabase
        Dim entId As ObjectId
        Using trans As Transaction = db.TransactionManager.StartTransaction()
            Dim bt As BlockTable = trans.GetObject(db.BlockTableId, OpenMode.ForRead)
            Dim Btr As BlockTableRecord = trans.GetObject(bt.Item(BlockTableRecord.ModelSpace), OpenMode.ForWrite)
            entId = Btr.AppendEntity(ent)
            trans.AddNewlyCreatedDBObject(ent, True)
            trans.Commit()
        End Using
        Return entId
    End Function
End Class

雪山飞狐_lzh · 发表于 2010-5-12 16:32:00

看来，只有请ahlzl再加个函数了，呵呵

ahlzl · 发表于 2010-5-12 19:03:00

VB.NET的代码：

<CommandMethod("Test")> Public Sub Test()
Dim ent1 As New Polyline()
ent1.AddVertexAt(0, New Point2d(50, 50), 0, 0, 0)
ent1.AddVertexAt(1, New Point2d(-50, 50), 0, 0, 0)
ent1.AddVertexAt(2, New Point2d(-50, -50), 0, 0, 0)
ent1.AddVertexAt(3, New Point2d(50, -50), 0, 0, 0)
ent1.Closed = True
Dim ent2 As New Circle(New Point3d(0, 0, 200), New Vector3d(0, 0, 1), 30)
Dim crossEnts As Entity() = New Entity(1) {}
crossEnts.SetValue(ent1, 0)
crossEnts.SetValue(ent2, 1)
Dim guideCurs As Entity() = New Entity(-1) {}
Dim loftOpt As New LoftOptions()
Dim loftEnt As Solid3d = DNA.CreateLoftedSolid(crossEnts, guideCurs, Nothing, loftOpt)
AppendEntity(loftEnt)
End Sub

Crazyhoof · 发表于 2010-5-13 09:24:00

ahlzl,我太崇拜你了！！！

ivanbenjamin · 发表于 2010-8-13 22:09:00

明经太牛了。

请问ahlzl大侠，这段程序在C++中怎么改呢？我用的是objectarx

ahlzl · 发表于 2010-8-13 22:47:00

C++的代码：

static AcDbObjectId AppendEntity(AcDbEntity *pEnt)
{
AcDbObjectId entId;
AcDbDatabase *pDb = acdbHostApplicationServices()->workingDatabase();
AcDbBlockTable *pBt;
pDb->getBlockTable(pBt, AcDb::kForRead);
AcDbBlockTableRecord *pBtr;
pBt->getAt(ACDB_MODEL_SPACE, pBtr, AcDb::kForWrite);
pBtr->appendAcDbEntity(entId, pEnt);
pBtr->close();
pBt->close();
pEnt->close();
return entId;
}
// - ahlzlARX_._test command (do not rename)
static void ahlzlARX__test(void)
{
// Add your code for command ahlzlARX_._test here
// 天圆
AcDbCircle *pCircle = new AcDbCircle(AcGePoint3d(0, 0, 20), AcGeVector3d::kZAxis, 6);
// 地方
AcGePoint2d pt1(9, 9), pt2(-9, 9), pt3(-9, -9), pt4(9, -9);
AcGePoint2dArray pts;
pts.append(pt1);
pts.append(pt2);
pts.append(pt3);
pts.append(pt4);
AcDbPolyline *pPline = new AcDbPolyline();
for (int i = 0; i < pts.length(); i++)
{
pPline->addVertexAt(i, pts[i], 0, 0, 0);
}
pPline->setClosed(Adesk::kTrue);
// 截面曲线集合
AcArray<AcDbEntity*> CrossEnts(2);
CrossEnts.append(pPline);
CrossEnts.append(pCircle);
// 引导线
AcArray<AcDbEntity*> GuideCurs = NULL;
// 路径曲线
AcDbEntity* pPathCur = NULL;
// 放样选项
AcDbLoftOptions LoftOpt;
// 放样
AcDb3dSolid *solid = new AcDb3dSolid();
solid->createLoftedSolid(CrossEnts, GuideCurs, pPathCur, LoftOpt);
AcDbObjectId entId = AppendEntity(solid );
delete pCircle;
delete pPline; }

复制代码

ivanbenjamin · 发表于 2010-8-15 22:35:00

太感谢了！

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