[每日一码] 转换ARC到POLYLINE

admin

下面是使用命令pedit实现的连接LINE/ARC到POLYLINE的代码：

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

下面是不用命令实现的连接LINE/ARC到POLYLINE的代码

1. //-----------------------------------------------------------------------------
2. //----- acrxEntryPoint.cpp
3. //-----------------------------------------------------------------------------
4. #include "StdAfx.h"
5. #include "resource.h"
6.   
7. //-----------------------------------------------------------------------------
8. #define szRDS 采用RXST("")
9.   
10. //-----------------------------------------------------------------------------
11. //----- ObjectARX EntryPoint
12. class CJoinToPlineApp : public AcRxArxApp {
13.   
14. public:
15.   CJoinToPlineApp () : AcRxArxApp () {}
16.   
17.   virtual AcRx::AppRetCode On采用kInitAppMsg (void *pkt) {
18.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kInitAppMsg (pkt) ;
19.     return (retCode) ;
20.   }
21.   
22.   virtual AcRx::AppRetCode On采用kUnloadAppMsg (void *pkt) {
23.     AcRx::AppRetCode retCode = AcRxArxApp::On采用kUnloadAppMsg (pkt) ;
24.     return (retCode) ;
25.   }
26.   
27.   virtual void RegisterServerComponents () {
28.   }
29.   
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.     };
36.   
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);
41.   
42.     if (rc != RTNORM) return;
43.   
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.     }
59.   
60.   }
61.   
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.   }
84.   
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;
101.   
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.     }
111.   
112.     ids.remove(idFirst);
113.     int prevCnt = ids.length() + 1;
114.   
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.   }
153.   
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;
165.   
166.     double newStart =
167.       (a->startAngle() > a->endAngle()) ?
168.       (a->startAngle() - 8 * atan(1.0)) :
169.       (a->startAngle());
170.   
171.     bulge = tan((a->endAngle() - newStart) / 4.0);
172.     if (clockwise) bulge = -bulge;
173.     return bulge;
174.   }
175. } ;
176.   

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