如何获取选择点映射到视图空间中？源码分享

admin

, A2 d* c' h6 b6 P
! z( q+ x. O8 h如何获取选择点映射到视图空间中？源码分享

; F+ J( x2 p% i) M

1. //------------------------------------------------------------------------------
   " v' `6 x4 `0 p7 p& d
2. // Select Screen Position and map to Modeling View Plane
   - q2 x/ w0 h5 T
3. //------------------------------------------------------------------------------
   
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   
6.     NXOpen::View* myView = NULL;
   
7.     NXOpen::Point3d myCursor(0, 0, 0);
     L! L. E# y9 b+ q
8. 
   + W9 |8 r. K! p
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    " L( p7 g& L. _( e8 b8 Q# o
11.     {
    * ~0 }4 F. {' ]& ?0 ^5 k, |
12.         // obtain the current default annotation plane where PMIs are placed on
    
13.         NXOpen::Xform *xform1;
      r+ U4 t! f7 p. O; V
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    ; q6 D6 A  J; U6 A9 e
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    1 |7 E& G0 q0 Q$ s2 s1 h
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    $ ]% g; W3 V- Y$ Z% ^, c+ T
18. 
    
19.         // create the ray 'into the screen' at the selected cursor position
    . {# [" r2 z5 |. n/ T
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);
    9 H9 Q3 Y. C: q
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
    : n# d$ _1 ^" a7 j; Q
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    ; d+ D5 x3 v5 Y& r+ s- Z
24.         lineRay->SetName("Ray");
    
25. 
    
26.         // create the plane from the view to intersect with the ray
    " \. Q: Y1 `; _* Z- @/ E  J& l
27.         NXOpen::Plane *planeView = m_wpart->Planes()->CreatePlane(ptDefaultPlane, vecDefaultPlane, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    8 C! k& C! l1 Y- T9 h
29.         planeView->SetName("ViewPlane");
    
30. 
    6 k5 B" L+ C# \( _/ ^
31.         // now create the intersection point
    
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    : O) q5 X' U' x1 |+ V
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    : `$ R. Y$ K& E# G" R" W
34.         pntInterSect->SeTColor(10);
    # K3 [2 O, {2 k
35.         pntInterSect->SetName("Intersection");
    
36. 
    
37.         pos = pntInterSect->Coordinates();
    # f: t2 q4 T: f5 e+ [  u
38.         print("\nPMI Position:", pos);
    
39. 
    
40.         // clean up - comment to see intermediate objects
    7 I& G/ r; o( o+ f; f+ ^
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    , J; v+ l" S/ Q9 u# L0 N
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    9 i: w; n) a6 ~9 p, C5 F
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    
46.         m_session->DeleteUndoMark(markDel, NULL);
    ( e0 r. a1 N# J% O7 H" {( V' h# b
47. 
    
48.         return true;
    
49.     }
    
50. 
    
51.     return false;
    
52. }

复制代码

6 Q! z% C! ]- T5 [" [, @
# g' g+ L0 D0 C2 C: T2 K/ |