如何获取选择点映射到视图空间中？源码分享

admin

: q* N2 C" a8 z9 b! z: G6 h& q: X如何获取选择点映射到视图空间中？源码分享

1. //------------------------------------------------------------------------------
   3 W/ ^; c9 D( T9 W! h- [$ k
2. // Select Screen Position and map to Modeling View Plane
   8 k6 ]0 Z3 `5 d) C1 ^$ ^1 k" l
3. //------------------------------------------------------------------------------
   0 a, N3 Q3 A7 c- @
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   
6.     NXOpen::View* myView = NULL;
   0 X4 ?* f8 i% v" s
7.     NXOpen::Point3d myCursor(0, 0, 0);
   
8. 
   ! n. p6 t) E6 |
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   7 s0 J$ k+ _. U/ j
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    6 E3 b) B6 z& q5 |* K8 L
11.     {
    
12.         // obtain the current default annotation plane where PMIs are placed on
    7 Z  D3 z' ]; ?: Y' ^; d9 j9 i
13.         NXOpen::Xform *xform1;
    . W  _, L) M) d3 j
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    ( g! \3 s+ N, Z; G
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
      c, |# Z) x9 |$ f! V# t
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    
18. 
    
19.         // create the ray 'into the screen' at the selected cursor position
    4 J8 g+ N+ X( s. k7 {
20.         NXOpen::Matrix3x3 vmx = myView->Matrix();
    
21.         NXOpen::Point3d p1(myCursor.X - vmx.Zx * 1000, myCursor.Y - vmx.Zy * 1000, myCursor.Z - vmx.Zz * 1000);
      ^3 J3 X) m$ O: E
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
    ' z5 r) G9 h/ P" j0 C- c- D, s0 a! g
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    
24.         lineRay->SetName("Ray");
    
25. 
    ' Y! t1 F8 C0 S" h: o' ^/ ?" K7 |
26.         // create the plane from the view to intersect with the ray
    - {* P* i7 I! w7 Y) _
27.         NXOpen::Plane *planeView = m_wpart->Planes()->CreatePlane(ptDefaultPlane, vecDefaultPlane, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    ( u6 }( }! s  p& S5 f
29.         planeView->SetName("ViewPlane");
    
30. 
    : {; Q2 a. n0 ~6 S
31.         // now create the intersection point
    . Y4 I: G2 }3 P% J. k9 `! a
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    2 j6 d+ a% w& [2 F
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    ; ?0 w0 r% @& h  i8 D: B
34.         pntInterSect->SeTColor(10);
    
35.         pntInterSect->SetName("Intersection");
    
36. 
    - P' k' K4 v$ ~5 }  `, C* v
37.         pos = pntInterSect->Coordinates();
    ; z$ h6 {0 l' P/ @7 B* z8 D
38.         print("\nPMI Position:", pos);
    ' M, u- l( B7 |9 Q4 m
39. 
    : ^/ {& ?( B1 [9 l" a3 X
40.         // clean up - comment to see intermediate objects
    
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    
46.         m_session->DeleteUndoMark(markDel, NULL);
    3 \) t! t9 ?1 L7 D6 ?8 g
47. 
    
48.         return true;
    
49.     }
    7 e/ i% w$ u) i0 p9 }
50. 
    " `$ o% b$ \! o! N5 S
51.     return false;
    
52. }

复制代码