如何获取选择点映射到视图空间中？源码分享

admin

5 f4 L( k7 ~7 v" x- [
/ `+ @& l2 S4 {: f+ F如何获取选择点映射到视图空间中？源码分享
6 D) R; s/ v; f3 D

1. //------------------------------------------------------------------------------
   
2. // Select Screen Position and map to Modeling View Plane
   + L2 I9 E  g) |. w* T% Q& v/ L9 i
3. //------------------------------------------------------------------------------
   : y; n8 k" U/ f* n
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   - s0 g% N$ {7 |9 Z) g
6.     NXOpen::View* myView = NULL;
   
7.     NXOpen::Point3d myCursor(0, 0, 0);
   
8. 
   
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    
11.     {
    : I0 X4 v: _1 c
12.         // obtain the current default annotation plane where PMIs are placed on
    / w* K5 L3 W. [1 f% |
13.         NXOpen::Xform *xform1;
    
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    ; z2 s0 A% o& \9 G4 s
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    . J* s! [9 f9 R0 P# }3 p  X
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    
18. 
    & x3 d0 H% A, s
19.         // create the ray 'into the screen' at the selected cursor position
    
20.         NXOpen::Matrix3x3 vmx = myView->Matrix();
      I, y0 {4 _. G) i9 g- R- d  o
21.         NXOpen::Point3d p1(myCursor.X - vmx.Zx * 1000, myCursor.Y - vmx.Zy * 1000, myCursor.Z - vmx.Zz * 1000);
    ; C7 V, L7 J# R
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
      A5 [: b3 z" M) C5 w0 S. L
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    , i. _' S+ u5 c) I, z0 Y. p
24.         lineRay->SetName("Ray");
    
25. 
    $ H) b4 [" p# T1 P( E
26.         // create the plane from the view to intersect with the ray
    
27.         NXOpen::Plane *planeView = m_wpart->Planes()->CreatePlane(ptDefaultPlane, vecDefaultPlane, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
29.         planeView->SetName("ViewPlane");
    
30. 
    % I5 Q* ?0 F8 f
31.         // now create the intersection point
    4 [( h& R3 }6 M4 L' e% u0 N! s! x
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
34.         pntInterSect->SeTColor(10);
    
35.         pntInterSect->SetName("Intersection");
    ; V" K1 z7 s& C
36. 
    
37.         pos = pntInterSect->Coordinates();
    ! _) B  N1 ?8 P3 x  q; s
38.         print("\nPMI Position:", pos);
    
39. 
    * v$ y1 S* M) U7 p8 C2 u! v
40.         // clean up - comment to see intermediate objects
    " ?+ a' D1 P) {( l( U$ M! K, Y0 T
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);
    " W8 o8 b' k6 A) v: d
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    4 ?1 `4 p; A# G  C( }/ ~0 ?1 s8 V: j
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
      W. F4 _* e( ]7 M6 ?
46.         m_session->DeleteUndoMark(markDel, NULL);
    
47. 
    8 y3 q- W7 Y7 U7 s% Z
48.         return true;
    4 |9 P) M) }  p8 s
49.     }
    . W/ p% b( p+ |4 B( r" B3 T; h
50. 
    
51.     return false;
    
52. }

复制代码

) h) W1 j- t6 n. [5 p
$ m5 j/ N0 ^; t! r0 C- T+ D! X