如何获取选择点映射到视图空间中？源码分享

admin

如何获取选择点映射到视图空间中？源码分享

3 U5 u& a# j' _" b

1. //------------------------------------------------------------------------------
   
2. // Select Screen Position and map to Modeling View Plane
   ; Q# V! g( {# u! ^3 ]- K4 `9 y
3. //------------------------------------------------------------------------------
   5 F+ b* k$ s: p9 {9 p% {
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   $ ]: Z/ M& G- c5 q4 h0 I$ C
6.     NXOpen::View* myView = NULL;
   % z! B( O, Y8 `0 y
7.     NXOpen::Point3d myCursor(0, 0, 0);
   ) _; `+ i/ G7 M6 D
8. 
   
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   * n( F+ b7 e7 h. r1 F/ f* _
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    7 Q  B1 v' [+ r! Q6 J& R
11.     {
    ! ~3 o6 g3 C) [' L+ h
12.         // obtain the current default annotation plane where PMIs are placed on
    ! W0 @, j8 s: _: a% f
13.         NXOpen::Xform *xform1;
    4 `: a- X& z; x7 I
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    4 P/ v* Q5 v! U5 ?
18. 
    ) ?3 N/ m6 p  E% I
19.         // create the ray 'into the screen' at the selected cursor position
    
20.         NXOpen::Matrix3x3 vmx = myView->Matrix();
    " C2 ^! f: o' u( h4 I! h2 M
21.         NXOpen::Point3d p1(myCursor.X - vmx.Zx * 1000, myCursor.Y - vmx.Zy * 1000, myCursor.Z - vmx.Zz * 1000);
    % K# Q+ s2 d* t
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
    ; N/ U$ k  T$ {2 b& J
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    
24.         lineRay->SetName("Ray");
    1 A4 ~) A* H$ h& ^
25. 
    - u# }3 |. W; v# W' y; ^3 `
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);
    + J# @# U* }+ Q0 I5 x. x- W
29.         planeView->SetName("ViewPlane");
    & o) b' X- x' o9 u1 b/ f4 S
30. 
    
31.         // now create the intersection point
    . K$ |" q4 Q' \( x+ Z7 U- @
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    % ~0 W% Y+ z2 Y0 p6 V
34.         pntInterSect->SeTColor(10);
    
35.         pntInterSect->SetName("Intersection");
    
36. 
    2 Z( X+ y& v. O
37.         pos = pntInterSect->Coordinates();
    # i8 h" k- Q" x. ~2 P4 V
38.         print("\nPMI Position:", pos);
    
39. 
    . @5 B+ F5 Y4 W. o, [0 ?
40.         // clean up - comment to see intermediate objects
    ) r7 {8 J$ f9 j' N5 `
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);
    9 b, h3 \( \1 J; V* U9 c5 E
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
      ~" h! J' J8 M
46.         m_session->DeleteUndoMark(markDel, NULL);
    
47. 
    ! P/ D. [( z; h2 n
48.         return true;
    
49.     }
    ; y/ B5 z- p+ P$ T
50. 
    . @" o% H: m2 I' W/ l8 a+ A; B' U
51.     return false;
    # k# L4 S) a, C& m+ V* ]' B. E
52. }

复制代码