Topic: Cannot get a projected point exactly and send it to Autocad 's Command

[lethuongtri]

Goodmorning everyone, I 'm a newbie and i have a question.  I tried to create a simple align command for X /Y direction by finding the projected point and moving entities by this point. The source code is like below . Please see it.

firstly , I tried it with X direction.But the resuilt pt1T 's value seemed that became " the closest endpoint" or "the closet Intersection point"  . I also tried with putting the system variable "OSMODE" to 0 but It 's not Work.

I attached the image . Please see it.

Thanks in advance.

Code - C++: [Select]

1. void
2. cmdAXY()
3. {
4.     ads_name ss;
5.     TCHAR Kw[10];
6.     int rc;
7.     rc = acedSSGet(NULL, NULL, NULL, NULL, ss);
8.     if (rc != RTNORM) return;
9.  
10.     acedInitGet(1, _T("X Y"));
11.     acedGetKword(_T("\nAlign Direction:<X/Y>"), Kw);
12.  
13.     //Khai báo, &#273;&#7883;nh ngh&#297;a g&#7889;c 0 UCS
14.     ads_point pt0,pt1,pt2,pt1T;
15.     pt0[0] = 0;
16.     pt0[1] = 0;
17.     pt0[2] = 0;
18.  
19.     //&#272;&#7883;nh ngh&#297;a pt1
20.     acedInitGet(1,NULL);
21.     rc = acedGetPoint(pt0, _T("\n Select the first point:"), pt1);
22.     if (rc != RTNORM) return;
23.  
24.     //&#272;&#7883;nh ngh&#297;a pt2:
25.     acedInitGet(1, NULL);
26.     rc = acedGetPoint(pt1, _T("\n Select the second point:"), pt2);
27.     if (rc != RTNORM) return;
28.  
29.     struct resbuf* cmdlist;
30.     if (_tcscmp(Kw, _T("X")) == 0)
31.     {
32.         pt1T[0] = pt1[0];
33.         pt1T[1] = pt2[1];
34.         pt1T[2] = pt1[2];
35.     }
36.     else
37.     {
38.         pt1T[0] = pt2[0];
39.         pt1T[1] = pt1[1];
40.         pt1T[2] = pt1[2];
41.     }
42.     cmdlist = acutBuildList(RTSTR, _T(".move"), RTSTR, _T("P"),RTSTR,_T(""),RTPOINT
43.         , pt1, RTPOINT, pt1T, 0);
44.  
45.     acedCmdS(cmdlist);
46.     acutRelRb(cmdlist);
47.     acedSSFree(ss);
48. }

[It's Alive!]

RT3DPOINT instead of RTPOINT?

[lethuongtri]

Thank for your reply . I tried it too but it didn't work.

[It's Alive!]

maybe try not using the move command

Code - C: [Select]

1.     static void ArxBrxTest_doit()
2.     {
3.         ads_name ss{ 0L, 0L };
4.         TCHAR Kw[10] = { 0 };
5.         int rc;
6.         rc = acedSSGet(NULL, NULL, NULL, NULL, ss);
7.         if (rc != RTNORM) return;
8.  
9.         acedInitGet(1, _T("X Y"));
10.         acedGetKword(_T("\nAlign Direction:<X/Y>"), Kw);
11.  
12.         AcGePoint3d pt1, pt2, pt1T;
13.         acedInitGet(1, NULL);
14.         rc = acedGetPoint(NULL, _T("\n Select the first point:"), asDblArray(pt1));
15.         if (rc != RTNORM) return;
16.  
17.         acedInitGet(1, NULL);
18.         rc = acedGetPoint(asDblArray(pt1), _T("\n Select the second point:"), asDblArray(pt2));
19.         if (rc != RTNORM) return;
20.  
21.         AcGePlane plane;
22.         if (_tcscmp(Kw, _T("X")) == 0)
23.             plane.set(pt1, AcGeVector3d::kYAxis);
24.         else
25.             plane.set(pt1, AcGeVector3d::kXAxis);
26.  
27.         pt1T = plane.closestPointTo(pt2);
28.  
29.         AcGeMatrix3d xform = AcGeMatrix3d::translation(pt2 - pt1T);
30.  
31.         AcDbObjectIdArray ids;
32.         acedGetCurrentSelectionSet(ids);
33.         for (auto id : ids)
34.         {
35.             if (AcDbEntityPointer pEnt(id, AcDb::kForWrite); pEnt.openStatus() == eOk)
36.                 pEnt->transformBy(xform);
37.         }
38.         acedSSFree(ss);
39.     }
40.  
41.  

[It's Alive!]

though you may need to transform to a UCS

[lethuongtri]

Thank for your reply . Finally, it worked .

I have some question about your code
     "ads_name ss{ 0L, 0L };
     TCHAR Kw[10] = { 0 };"   ->   {0L,0L} and {0} is what ?  and why do we use it ?

I guess it related to "string may not zero terminated" warning but i 'm not sure .

Thanks in advance.

[It's Alive!]

Glad it works : )

I just try to get in the habit of initializing variables, sometimes I forget, I missed rc

Uninitialized variables make a program non-deterministic. Each time the program runs, it may behave differently.
Probably not an issue in this case

[lethuongtri]

Thanks you alot . I got it .