JoinToPline 连接线段成多段线

admin

1. //-----------------------------------------------------------------------------
2. //----- acrxEntryPoint.cpp
3. //-----------------------------------------------------------------------------
4. #include "StdAfx.h"
5. #include "resource.h"
7. //-----------------------------------------------------------------------------
8. #define szRDS 采用RXST("")
10. //-----------------------------------------------------------------------------
11. //----- ObjectARX EntryPoint
12. class CJoinToPlineApp : public AcRxArxApp {
14. public:
15.   CJoinToPlineApp () : AcRxArxApp () {}
17.   virtual AcRx::AppRetCode On采用kInitAppMsg (void *pkt) {
18.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kInitAppMsg (pkt) ;
19.     return (retCode) ;
20.   }
22.   virtual AcRx::AppRetCode On采用kUnloadAppMsg (void *pkt) {
23.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kUnloadAppMsg (pkt) ;
24.     return (retCode) ;
25.   }
27.   virtual void RegisterServerComponents () {
28.   }
30.   static void JoinToPlineJoinToPline () {
31.     // Фильтр для выбора отрезков (LINE) и дуг (ARC)
32.     ACHAR* promptPtrs[] = {
33.       采用T("\nSelect lines and arcs for join in poyline (ENTER - exit): "),
34.       采用T("\nRemove lines and arcs from selection set: ")
35.     };
37.     ads采用name ss;
38.     resbuf *rbFilter = acutBuildList(RTDXF0,采用T("LINE,ARC"),RTNONE);
39.     int rc = acedSSGet(采用T(":$"),promptPtrs,NULL,rbFilter,ss);
40.     acutRelRb(rbFilter);
42.     if (rc != RTNORM) return;
44.     AcDbObjectIdArray ids;
45.     if (ObjectIdArrayFromSelSet(ss, ids) != Acad::eOk) return;
46.     while (ids.length() > 0)
47.     {
48.       AcDbEntity *p = MakeJonedPoly(ids);
49.       if (p) {
50.         AcDbBlockTableRecordPointer pSpace(acdbCurDwg()->currentSpaceId(), AcDb::kForWrite);
51.         if (pSpace.openStatus() != Acad::eOk) return;
52.         pSpace->appendAcDbEntity(p);
53.         p->close();
54.       } else {
55.         acutPrintf(采用T("\nError in data!"));
56.         return;
57.       }
58.     }
60.   }
62.   /// <summary>
63.   /// AcDbObjectIdArray from SelectionSet
64.   /// </summary>
65.   /// <param name="sset">SelectionSet</param>
66.   /// <param name="ids">AcDbObjectIdArray</param>
67.   /// <returns></returns>
68.   static Acad::ErrorStatus ObjectIdArrayFromSelSet(ads采用name sset, AcDbObjectIdArray &ids)
69.   {
70.     Acad::ErrorStatus es = Acad::eOk;
71.     long nset = -1;
72.     if (acedSSLength(sset,&nset) != RTNORM) return Acad::eAmbiguousInput;
73.     ids.setLogicalLength(nset);
74.     ads采用name en;
75.     AcDbObjectId id;
76.     for (long i=0; i < nset; i++) {
77.       if (acedSSName(sset,i,en) == RTNORM) {
78.         if ((es = acdbGetObjectId(id,en)) != Acad::eOk) return es;
79.         ids[i] = id;
80.       }
81.     }
82.     return Acad::eOk;
83.   }
85.   /// <summary>
86.   /// Create polyline from lines and arcs.
87.   /// Those ids will remove from input array
88.   /// </summary>
89.   /// <param name="ids">Array of id's</param>
90.   /// <param name="FUZZ">The accuracy of determining the distance between points</param>
91.   /// <returns></returns>
92.   static AcDbPolyline* MakeJonedPoly(
93.     AcDbObjectIdArray &ids,
94.     double FUZZ = AcGeContext::gTol.equalPoint())
95.   {
96.     AcDbPolyline *p = new AcDbPolyline();
97.     p->setDatabaseDefaults();
98.     AcDbObjectId idFirst = ids[0];
99.     AcGePoint3d nextPt = AcGePoint3d::kOrigin;
100.     AcGePoint3d prevPt = AcGePoint3d::kOrigin;
102.     AcDbObjectPointer<AcDbCurve> c(idFirst,AcDb::kForRead);
103.     if (c.openStatus() == Acad::eOk) {
104.       AcGePoint3d ptStart, ptEnd;
105.       c->getStartPoint(ptStart); c->getEndPoint(ptEnd);
106.       p->addVertexAt(0, asPnt2d(asDblArray(ptStart)), BulgeFromArc(c, false), 0, 0);
107.       p->addVertexAt(1, asPnt2d(asDblArray(ptEnd)), 0, 0, 0);
108.       nextPt = ptEnd;
109.       prevPt = ptStart;
110.     }
112.     ids.remove(idFirst);
113.     int prevCnt = ids.length() + 1;
115.     while (ids.length() > 0 && ids.length() < prevCnt)
116.     {
117.       prevCnt = ids.length();
118.       for (int i = 0; i < ids.length(); i++) {
119.         AcDbObjectId id = ids[i];
120.         AcDbObjectPointer<AcDbCurve> cv(id,AcDb::kForRead);
121.         if (cv.openStatus() == Acad::eOk) {
122.           AcGePoint3d ptStart, ptEnd;
123.           cv->getStartPoint(ptStart); cv->getEndPoint(ptEnd);
124.           if (ptStart.distanceTo(nextPt) < FUZZ || ptEnd.distanceTo(nextPt) < FUZZ) {
125.             double bulge = BulgeFromArc(cv, ptEnd.distanceTo(nextPt) < FUZZ);
126.             p->setBulgeAt(p->numVerts() - 1, bulge);
127.             if (ptStart.distanceTo(nextPt) < FUZZ)
128.               nextPt = ptEnd;
129.             else
130.               nextPt = ptStart;
131.             p->addVertexAt(p->numVerts(), asPnt2d(asDblArray(nextPt)), 0, 0, 0);
132.             ids.remove(id);
133.             break;
134.           } else if (ptStart.distanceTo(prevPt) < FUZZ || ptEnd.distanceTo(prevPt) < FUZZ) {
135.             double bulge = BulgeFromArc(cv, ptStart.distanceTo(prevPt) < FUZZ);
136.             if (ptStart.distanceTo(prevPt) < FUZZ)
137.               prevPt = ptEnd;
138.             else
139.               prevPt = ptStart;
140.             p->addVertexAt(0, asPnt2d(asDblArray(prevPt)), bulge, 0, 0);
141.             ids.remove(id);
142.             break;
143.           }
144.         }
145.       }
146.     }
147.     if (p->numVerts() == 0) {
148.       delete p;  return NULL;
149.     }  else  {
150.       return p;
151.     }
152.   }
154.   /// <summary>
155.   /// Getting bulge of curve
156.   /// </summary>
157.   /// <param name="c">AcDbCurve pointer</param>
158.   /// <param name="clockwise">direction.</param>
159.   /// <returns></returns>
160.   static double BulgeFromArc(AcDbCurve *c, bool clockwise)
161.   {
162.     double bulge = 0.0;
163.     AcDbArc *a = AcDbArc::cast(c);
164.     if (a == NULL) return bulge;
166.     double newStart =
167.       (a->startAngle() > a->endAngle()) ?
168.       (a->startAngle() - 8 * atan(1.0)) :
169.       (a->startAngle());
171.     bulge = tan((a->endAngle() - newStart) / 4.0);
172.     if (clockwise) bulge = -bulge;
173.     return bulge;
174.   }
175. } ;
177. //-----------------------------------------------------------------------------
178. IMPLEMENT采用ARX采用ENTRYPOINT(CJoinToPlineApp)
179. ACED采用ARXCOMMAND采用ENTRY采用AUTO(CJoinToPlineApp, JoinToPline, JoinToPline, JoinToPline, ACRX采用CMD采用MODAL, NULL)

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admin

1. //-----------------------------------------------------------------------------
2. //----- acrxEntryPoint.cpp
3. //-----------------------------------------------------------------------------
4. #include "StdAfx.h"
5. #include "acedCmdNF.h"
6. #include "resource.h"
7. //-----------------------------------------------------------------------------
8. #define szRDS 采用RXST("")
9. //-----------------------------------------------------------------------------
10. //----- ObjectARX EntryPoint
11. class CMyJoinApp : public AcRxArxApp {
13. public:
14.   CMyJoinApp() : AcRxArxApp() {}
15.   virtual AcRx::AppRetCode On采用kInitAppMsg(void *pkt) {
16.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kInitAppMsg(pkt);
17.     return (retCode);
18.   }
19.   virtual AcRx::AppRetCode On采用kUnloadAppMsg(void *pkt) {
20.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kUnloadAppMsg(pkt);
21.     return (retCode);
22.   }
23.   virtual void RegisterServerComponents() {}
25.   static void RivilisMyJoin() {
26.     ads采用name en1;  ads采用point p;
27.     while (acedEntSel(采用T("\nSelect first segment: "), en1, p) == RTNORM)
28.     {
29.       bool bConvertToPoly = false;
30.       AcDbObjectId id1; acdbGetObjectId(id1, en1);
31.       if (id1.objectClass() == AcDbLine::desc() ||
32.           id1.objectClass() == AcDbArc::desc())
33.       {
34.         bConvertToPoly = true;
35.       }
36.       ads采用name en2;
37.       if (acedEntSel(采用T("\nSelect next segment: "), en2, p) == RTNORM)
38.       {
39.         if (bConvertToPoly)
40.           acedCommandS(RTSTR, 采用T("采用PEDIT"), RTENAME, en1, RTSTR, 采用T("采用YES"), RTSTR, 采用T("采用Join"),
41.             RTENAME, en2, RTSTR, 采用T(""), RTSTR, 采用T(""), RTNONE);
42.         else
43.           acedCommandS(RTSTR, 采用T("采用PEDIT"), RTENAME, en1, RTSTR, 采用T("采用Join"),
44.             RTENAME, en2, RTSTR, 采用T(""), RTSTR, 采用T(""), RTNONE);
45.       }
46.     }
47.   }
48. };
50. //-----------------------------------------------------------------------------
51. IMPLEMENT采用ARX采用ENTRYPOINT(CMyJoinApp)
53. ACED采用ARXCOMMAND采用ENTRY采用AUTO(CMyJoinApp, Rivilis, MyJoin, MyJoin, ACRX采用CMD采用MODAL, NULL)

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admin

1. //-----------------------------------------------------------------------------
2. //----- acrxEntryPoint.cpp
3. //-----------------------------------------------------------------------------
4. #include "StdAfx.h"
5. #include "acedCmdNF.h"
6. #include "resource.h"
7. //-----------------------------------------------------------------------------
8. #define szRDS 采用RXST("")
9. //-----------------------------------------------------------------------------
10. //----- ObjectARX EntryPoint
11. class CMyJoinApp : public AcRxArxApp {
13. public:
14.   CMyJoinApp() : AcRxArxApp() {}
15.   virtual AcRx::AppRetCode On采用kInitAppMsg(void *pkt) {
16.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kInitAppMsg(pkt);
17.     return (retCode);
18.   }
19.   virtual AcRx::AppRetCode On采用kUnloadAppMsg(void *pkt) {
20.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kUnloadAppMsg(pkt);
21.     return (retCode);
22.   }
23.   virtual void RegisterServerComponents() {}
25.   static void RivilisMyJoin() {
26.     // Check PEDITACCEPT sysvar
27.     resbuf rb = { 0, RTSHORT, 0 };
28.     acedGetVar(采用T("PEDITACCEPT"), &rb);
29.     bool bPeditAccept = (rb.resval.rint == 1) ? true : false;
30.     ads采用name en1;  ads采用point p;
31.     while (acedEntSel(采用T("\nSelect first segment: "), en1, p) == RTNORM)
32.     {
33.       // if PEDITACCEPT == 1 then PEDIT no ask about converting
34.       bool bConvertToPoly = false;
35.       if (!bPeditAccept)
36.       {
37.         AcDbObjectId id1; acdbGetObjectId(id1, en1);
38.         if (id1.objectClass() == AcDbLine::desc() ||
39.           id1.objectClass() == AcDbArc::desc())
40.         {
41.           bConvertToPoly = true;
42.         }
43.       }
44.       ads采用name en2;
45.       if (acedEntSel(采用T("\nSelect next segment: "), en2, p) == RTNORM)
46.       {
47.         if (bConvertToPoly)
48.           acedCommandS(RTSTR, 采用T("采用PEDIT"), RTENAME, en1, RTSTR, 采用T("采用YES"), RTSTR, 采用T("采用Join"),
49.             RTENAME, en2, RTSTR, 采用T(""), RTSTR, 采用T(""), RTNONE);
50.         else
51.           acedCommandS(RTSTR, 采用T("采用PEDIT"), RTENAME, en1, RTSTR, 采用T("采用Join"),
52.             RTENAME, en2, RTSTR, 采用T(""), RTSTR, 采用T(""), RTNONE);
53.       }
54.     }
55.   }
56. };
58. //-----------------------------------------------------------------------------
59. IMPLEMENT采用ARX采用ENTRYPOINT(CMyJoinApp)
61. ACED采用ARXCOMMAND采用ENTRY采用AUTO(CMyJoinApp, Rivilis, MyJoin, MyJoin, ACRX采用CMD采用MODAL, NULL)

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admin

1. //------------------------------------------------------------------------------
2. class SubentityOverrule : public AcDbSubentityOverrule
3. //------------------------------------------------------------------------------
4. {
5. public:
6.   static SubentityOverrule* 采用pTheOverrule;
7.   ACRX采用DECLARE采用MEMBERS(SubentityOverrule);
9.   //--------------------------------------------------------------------------
10.   bool isApplicable(const AcRxObject* pOverruledSubject) const
11.   //--------------------------------------------------------------------------
12.   {
13.     if (pOverruledSubject->isA() == MyClass::desc())
14.     {
15.       MyClass* pMine = MyClass::cast(pOverruledSubject);
16.       if (pMine != NULL)
17.       {
18.         return true;
19.       }
20.     }
21.     return false;
22.   }
24.   //--------------------------------------------------------------------------
25.   static void SubentityOverrule::AddOverrule()
26.   //--------------------------------------------------------------------------
27.   {
28.     if (采用pTheOverrule != NULL)
29.     {
30.       return;
31.     }
33.     采用pTheOverrule = new SubentityOverrule();
35.     Acad::ErrorStatus es = AcRxOverrule::addOverrule(MyClass::desc(), 采用pTheOverrule, true);
37.     SubentityOverrule::setIsOverruling(true);
38.   }
40.   //--------------------------------------------------------------------------
41.   static void SubentityOverrule::RemoveOverrule()
42.   //--------------------------------------------------------------------------
43.   {
44.     if (采用pTheOverrule == NULL)
45.     {
46.       return;
47.     }
49.     SubentityOverrule::setIsOverruling(false);
51.     Acad::ErrorStatus es = AcRxOverrule::removeOverrule(MyClass::desc(), 采用pTheOverrule);
52.     delete 采用pTheOverrule;
54.     采用pTheOverrule = NULL;
55.   }
57.   //--------------------------------------------------------------------------
58.   Acad::ErrorStatus SubentityOverrule::getSubentPathsAtGsMarker(const AcDbEntity* pSubject, AcDb::SubentType type, Adesk::GsMarker gsMark, const AcGePoint3d& pickPoint,
59.                   const AcGeMatrix3d& viewXform, int& numPaths, AcDbFullSubentPath*& subentPaths, int numInserts = 0, AcDbObjectId* entAndInsertStack = NULL)
60.   //--------------------------------------------------------------------------
61.   {
62.     return  Acad::eOk;
63.   }
65.   //--------------------------------------------------------------------------
66.   AcDbEntity* SubentityOverrule::subentPtr(const AcDbEntity* pSubject, const AcDbFullSubentPath& id)
67.   //--------------------------------------------------------------------------
68.   {
69.     return NULL;
70.   }
71. };
73. SubentityOverrule* SubentityOverrule::采用pTheOverrule = NULL;
74. ACRX采用NO采用CONS采用DEFINE采用MEMBERS(SubentityOverrule, AcDbSubentityOverrule);

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admin

1. //------------------------------------------------------------------------------
2. Acad::ErrorStatus MyClass::subGetSubentPathsAtGsMarker(AcDb::SubentType type, Adesk::GsMarker gsMark, const AcGePoint3d& pickPoint,
3.                                                                 const AcGeMatrix3d& viewXform, int& numPaths, AcDbFullSubentPath*& subentPaths, int numInserts, AcDbObjectId* entAndInsertStack) const
4. //------------------------------------------------------------------------------
5. {
6.     BOOL bCtrl = KEY采用DOWN(VK采用CONTROL);
8.     if (bCtrl)
9.     {
10.         return Acad::eNotImplementedYet;
11.     }
12.     else
13.     {
14.         return AcDbPolyline::subGetSubentPathsAtGsMarker(type, gsMark, pickPoint, viewXform, numPaths, subentPaths, numInserts, entAndInsertStack);
15.     }
16. }
18. //------------------------------------------------------------------------------
19. AcDbEntity* MyClass::subSubentPtr(const AcDbFullSubentPath& id) const
20. //------------------------------------------------------------------------------
21. {
22.     BOOL bCtrl = KEY采用DOWN(VK采用CONTROL);
24.     if (bCtrl)
25.     {
26.         return NULL;
27.     }
28.     else
29.     {
30.         return AcDbPolyline::subSubentPtr(id);
31.     }
32. }

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admin

1. acedCommandS(RTSTR, 采用T("PEDIT"),
2.                 RTSTR, 采用T("M"),
3.                 RTPICKS, result,
4.                 RTSTR, 采用T(""),
5.                 RTSTR, 采用T("Y"),
6.                 RTSTR, 采用T("J"),
7.                 RTSTR, 采用T("1"),//表示模糊距离
8.                 RTSTR, 采用T(""),
9.                 RTSTR, 采用T(""),
10.                 RTNONE);
11. 解释：RTPICKS 是你要转变为多段线的选择集，它的类型是ads采用name的。
13. acedCommandS(RTSTR, 采用T("PEDIT"),
14.             RTENAME, entName,
15.             RTSTR, 采用T("Y"),
16.             RTSTR, 采用T("J"),
17.             RTPICKS, result,//选择集，表示需要转换的实体集合。
18.             RTSTR, 采用T(""), RTSTR, 采用T(""), RTNONE);
19. 解释：RTENAME ，entName 表示选择一个需要转换为多段线的实体，只能是一个，它应该是属于集合resut的。

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admin

1. PEDITACCEPT（系统变量）
2. 自动将选定对象转换为多段线，而在使用 PEDIT 时不显示提示。
4. 类型:        整数
6. 保存位置:        注册表
8. 初始值:        0
11. 0        将显示提示，允许用户选择将选定对象转换为多段线
13. 1        自动将选定对象转换为多段线，而不显示提示
18. CAD 编辑多段线PEDIT命令使用
19. PEDIT命令的使用：
21. 在CAD的命令行中，输入PEDIT命令空格，选择要编辑的多段线，一定要是多段线。空格就可以进行修改了。
23. 定义和用法：
25. PEDIT编辑多段线，编辑多段线和三维多边形网格。PEDIT的常见用途包含合并二维多段线、将线条和圆弧转换为二维多段线以及将多段线转换为近似B样条曲线的曲线（拟合多段线）。

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nkmjg

1. //-----------------------------------------------------------------------------
2. //----- acrxEntryPoint.cpp
3. //-----------------------------------------------------------------------------
4. #include "StdAfx.h"
5. #include "resource.h"
6. #include "dbJoinEntityPE.h"
8. //-----------------------------------------------------------------------------
9. #define szRDS 采用RXST("")
11. //-----------------------------------------------------------------------------
12. //----- ObjectARX EntryPoint
13. class CJoinEntitiesApp : public AcRxArxApp {
15. public:
16.   CJoinEntitiesApp() : AcRxArxApp() {}
18.   virtual AcRx::AppRetCode On采用kInitAppMsg(void* pkt) {
19.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kInitAppMsg(pkt);
20.     return (retCode);
21.   }
23.   virtual AcRx::AppRetCode On采用kUnloadAppMsg(void* pkt) {
24.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kUnloadAppMsg(pkt);
25.     return (retCode);
26.   }
28.   virtual void RegisterServerComponents() {  }
30.   static void RivilisJoinEnts()
31.   {
32.     // filter for selectin lines and arcs
33.     ACHAR* promptPtrs[] = {
34.       采用T("\nSelect lines, arcs, polylines for getting polyline (ENTER - exit): "),
35.       采用T("\nRemove lines, arcs, polylines from selection set: ")
36.     };
38.     ads采用name ss;
39.     resbuf* rbFilter = acutBuildList(RTDXF0, 采用T("LINE,ARC,LWPOLYLINE"), RTNONE);
40.     int rc = acedSSGet(采用T(":$"), promptPtrs, NULL, rbFilter, ss);
41.     acutRelRb(rbFilter);
43.     if (rc != RTNORM) return;
45.     AcDbObjectIdArray ids;
46.     if (ObjectIdArrayFromSelSet(ss, ids) != Acad::eOk) return;
48.     AcDbObjectPointer<AcDbPolyline> pPoly; pPoly.create();
49.     pPoly->setDatabaseDefaults();
50.     AcArray<AcDbEntity*> ents; ents.setPhysicalLength(ids.length());
52.     AcDbObjectPointer<AcDbCurve> c(ids[0], AcDb::kForRead);
53.     if (c.openStatus() == Acad::eOk) {
54.       AcGePoint3d ptStart, ptEnd;
55.       c->getStartPoint(ptStart); c->getEndPoint(ptEnd);
56.       pPoly->addVertexAt(0, asPnt2d(asDblArray(ptStart)), BulgeFromArc(c, false), 0, 0);
57.       pPoly->addVertexAt(1, asPnt2d(asDblArray(ptEnd)), 0, 0, 0);
58.     }
60.     for (int i = 1; i < ids.length(); i++)
61.     {
62.       AcDbObjectPointer<AcDbCurve> c(ids[i], AcDb::kForRead);
63.       if (c.openStatus() == Acad::eOk)
64.         ents.append(c);
65.     }
67.     if (ents.length() > 0)
68.     {
69.       AcDbJoinEntityPE* pPE = AcDbJoinEntityPE::cast(pPoly->queryX(AcDbJoinEntityPE::desc()));
71.       AcGeIntArray aInts;
73.       Acad::ErrorStatus es = pPE->joinEntities(pPoly, ents, aInts);
75.       if (es != Acad::eOk)
76.       {
77.         acutPrintf(采用T("\nError pPE->joinEntities(pPoly, ents, aInts) = %s"), acadErrorStatusText(es));
78.         return;
79.       }
80.     }
81.     AcDbBlockTableRecordPointer pSpace(acdbCurDwg()->currentSpaceId(), AcDb::kForWrite);
82.     if (pSpace.openStatus() != Acad::eOk) return;
83.     pSpace->appendAcDbEntity(pPoly);
84.   }
86.   /// <summary>
87.   /// Getting AcDbObjectIdArray from SelectionSet
88.   /// </summary>
89.   /// <param name="sset">SelectionSet</param>
90.   /// <param name="ids">AcDbObjectIdArray</param>
91.   /// <returns></returns>
92.   static Acad::ErrorStatus ObjectIdArrayFromSelSet(ads采用name sset, AcDbObjectIdArray& ids)
93.   {
94.     Acad::ErrorStatus es = Acad::eOk;
95.     Adesk::Int32 nset = -1;
96.     if (acedSSLength(sset, &nset) != RTNORM) return Acad::eAmbiguousInput;
97.     ids.setLogicalLength(nset);
98.     ads采用name en;
99.     AcDbObjectId id;
100.     for (long i = 0; i < nset; i++) {
101.       if (acedSSName(sset, i, en) == RTNORM) {
102.         if ((es = acdbGetObjectId(id, en)) != Acad::eOk) return es;
103.         ids[i] = id;
104.       }
105.     }
106.     return Acad::eOk;
107.   }
108.   /// <summary>
109.   /// Getting bulge for curve
110.   /// </summary>
111.   /// <param name="c">curve pointer</param>
112.   /// <param name="clockwise">clockwise or counterclockwise.</param>
113.   /// <returns></returns>
114.   static double BulgeFromArc(AcDbCurve* c, bool clockwise)
115.   {
116.     double bulge = 0.0;
117.     AcDbArc* a = AcDbArc::cast(c);
118.     if (a == NULL) return bulge;
120.     double newStart =
121.       (a->startAngle() > a->endAngle()) ?
122.       (a->startAngle() - 8 * atan(1.0)) :
123.       (a->startAngle());
125.     bulge = tan((a->endAngle() - newStart) / 4.0);
126.     if (clockwise) bulge = -bulge;
127.     return bulge;
128.   }
129. };
131. //-----------------------------------------------------------------------------
132. IMPLEMENT采用ARX采用ENTRYPOINT(CJoinEntitiesApp)
134. ACED采用ARXCOMMAND采用ENTRY采用AUTO(CJoinEntitiesApp, Rivilis, JoinEnts, JoinEnts, ACRX采用CMD采用MODAL | ACRX采用CMD采用USEPICKSET, NULL)

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