如何获取选择点映射到视图空间中？源码分享

admin

3 p& Y/ P8 u0 p8 a6 x) g* m8 U如何获取选择点映射到视图空间中？源码分享
- _/ W1 _: x: R" t* F. U# q* f
  b) u3 J# t% A7 J9 _" `& X/ i

1. //------------------------------------------------------------------------------
   
2. // Select Screen Position and map to Modeling View Plane
   9 u9 S# K$ M) G3 l. ^$ p. D
3. //------------------------------------------------------------------------------
   
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   
6.     NXOpen::View* myView = NULL;
   / `2 |! Q3 x1 g2 o3 Z, a# ^
7.     NXOpen::Point3d myCursor(0, 0, 0);
     g& ^# C1 T( w) d- Q% R! O
8. 
   4 `+ m1 K6 J2 Q) ^
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    ! k: l' P$ c1 p" S. Y/ b4 i
11.     {
    / k* U- s- R+ Q. ~# M
12.         // obtain the current default annotation plane where PMIs are placed on
    ' P( v9 v2 Y; s: z7 D
13.         NXOpen::Xform *xform1;
    
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    " F6 W! l2 i, l9 J6 O; }
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    ; }6 B; J; ~6 g
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    & j% u: r3 `/ c0 g
18. 
    . u* v& x0 M& i$ B9 \, N
19.         // create the ray 'into the screen' at the selected cursor position
    " G( X; a) o& _7 p3 G# v) a. s, U
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);
    
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
    3 _1 h. I2 S$ g! |1 k. H
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    / N' F" y/ n: f+ Q. T# `: @8 Q
24.         lineRay->SetName("Ray");
    ( ?1 \6 K. r/ c" j
25. 
    % p, i* C. l8 s6 b) Y% n
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);
    : {* J: e( W+ k0 r  a& F  E
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
29.         planeView->SetName("ViewPlane");
    
30. 
    . [+ |. f- T7 T  s# k
31.         // now create the intersection point
    : X( y( U7 l: y- |% @( s8 \# G
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    0 C6 Z: V! D2 a% c8 H. g: B
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
34.         pntInterSect->SeTColor(10);
    0 s7 T$ Z+ o8 S2 r; J
35.         pntInterSect->SetName("Intersection");
    
36. 
    
37.         pos = pntInterSect->Coordinates();
    
38.         print("\nPMI Position:", pos);
    , p  K8 b$ Y4 v# N  M
39. 
    
40.         // clean up - comment to see intermediate objects
    # v4 f/ E/ a; U% ~) P8 d$ F
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    9 E1 Z' s" c, L! s# I
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    6 z& d2 g* {! p! ]
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    # W. E  ~. S4 a
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    9 T' A; }; U1 Q- q, m& U
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    
46.         m_session->DeleteUndoMark(markDel, NULL);
    ) \3 c' ^4 \7 x# [. |  N- M
47. 
    
48.         return true;
    
49.     }
    
50. 
    * v6 a4 t& @7 B$ q2 u3 \% y& [
51.     return false;
    ) n7 B( s7 j5 h5 E: u& \& y
52. }

复制代码

) B+ ^6 p5 M/ P2 g% u& R" _6 S/ T