[每日一码] 模拟实现STRETCH命令的ARX实现代码

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2. void asdktest()
3. {
4. AcGePoint3d pnt1;
5. // get the first point
6. int res = acedGetPoint (NULL, "\nPick crossing window : ", asDblArray (pnt1));
7. // if ok
8. if (res == RTNORM)
9. {
10.   AcGePoint3d pnt2;
11.   res = acedGetCorner (asDblArray (pnt1), "\nSpecify other corner : ", asDblArray (pnt2));
12.   // if ok
13.   if (res == RTNORM)
14.   {
15.    AcGePoint3d distPnt;
16.    res = acedGetPoint (asDblArray (pnt1), "\nPick distance : ", asDblArray (distPnt));
17.    // if ok
18.    if (res == RTNORM)
19.    {
20.     // get the stretch distance
21.     AcGeVector3d stretchVec = distPnt - pnt1;
23.     // create a bounding box - we have to use the set method like this because of
24.     // a defect in the other set method :-(
25.     AcGeBoundBlock3d box;
26.     box.set (pnt1, AcGeVector3d ((pnt2-pnt1).x, 0,0),
27.             AcGeVector3d (0,(pnt2-pnt1).y,0),
28.             AcGeVector3d (0,0,(pnt2-pnt1).z));
29.     ads采用name ss;
30.     // get a strech selection set
31.     res = acedSSGet ("采用C", asDblArray (pnt1), asDblArray (pnt2), NULL, ss);
32.     // if ok
33.     if (res == RTNORM)
34.     {
35.      // get the length of the selection set
36.      long length = 0l;
37.      acedSSLength (ss, &length);
38.      // now loop round
39.      for (long i=0; i<length; ++i)
40.      {
41.       ads采用name ename;
42.       // extract the ename
43.       if (acedSSName (ss, i, ename) != RTNORM)
44.        continue;
46.       AcDbObjectId id;
47.       // convert the ename into an ObjectId
48.       acdbGetObjectId(id, ename);
49.       // open the entity for write
50.       AcDbObjectPointer<AcDbEntity>ent (id, AcDb::kForWrite);
51.       // if ok
52.       if (ent.openStatus() == Acad::eOk)
53.       {
54.        AcGePoint3dArray pnts;
55.        // get the stretch points
56.        if (ent->getStretchPoints(pnts) != Acad::eOk)
57.         continue;
59.        // find out what points need processing
60.        AcDbIntArray idxAry;
61.        bool found = false;
62.        for (int i=0; i<pnts.length(); ++i)
63.        {
64.         // get one of the stretch points
65.         AcGePoint3d pnt = pnts.at(i);
66.         // if the point is in the crossing window
67.         if (box.contains(pnt))
68.         {
69.          // add it to our list
70.          idxAry.append(i);
71.          found = true;
72.         }
73.        }
75.        // if the stretch is valid
76.        if (found || pnts.length() == 0)
77.        {
78.         // then update the points!!
79.         ent->moveStretchPointsAt(idxAry, stretchVec);
80.        }      
81.       }
82.      }
84.      // free up the selection set
85.      acedSSFree (ss);
86.     }
87.    }
88.   }
89. }
90. }

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