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
# o; B% `7 ^( U

1. //------------------------------------------------------------------------------
   
2. // Select Screen Position and map to Modeling View Plane
   
3. //------------------------------------------------------------------------------
   
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   + X& q% d3 U/ L0 K
5. {
   
6.     NXOpen::View* myView = NULL;
   % P3 j5 p& q( X4 a4 v, I4 w5 ~: z# G
7.     NXOpen::Point3d myCursor(0, 0, 0);
   
8. 
   & M7 T; G) l" S
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    
11.     {
    6 U' l/ E) [: A" \) m- f" B
12.         // obtain the current default annotation plane where PMIs are placed on
    8 R1 v$ K5 g8 S9 K  n( ?0 g9 a
13.         NXOpen::Xform *xform1;
    
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    ! i( |! D  b3 w0 c5 `
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    ) L% _8 Y9 K% i# D
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    - a0 N+ U, l5 n; @9 D9 Z9 H- y
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    
18. 
    
19.         // create the ray 'into the screen' at the selected cursor position
    + ~9 l; s! W5 X# y: C" d5 G
20.         NXOpen::Matrix3x3 vmx = myView->Matrix();
      N' S& g# J% V4 O# _) {
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);
    8 R3 U/ k! d7 W& s% J
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    # y  w; f4 }- S# ]! ?* M
24.         lineRay->SetName("Ray");
    ; q% q1 B; [1 R; R$ v+ U) v
25. 
    ) j9 t+ A* F. \1 {& y: q- [
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);
    6 N' I5 t( F$ z2 U
29.         planeView->SetName("ViewPlane");
    - k( ~) P2 `$ m, C: v( ^
30. 
    
31.         // now create the intersection point
    : J1 t/ \( P; m- D
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");
    ' t# e' O( |- p6 B/ m  w/ c0 `5 E; q
36. 
    
37.         pos = pntInterSect->Coordinates();
    # i0 ~0 O9 C% F0 f
38.         print("\nPMI Position:", pos);
    
39. 
    
40.         // clean up - comment to see intermediate objects
    4 X, {' f; k/ j( H
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    ' [  r, d! r  e& J
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    : t, s3 o' [& T) L9 U, ^
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    
46.         m_session->DeleteUndoMark(markDel, NULL);
    / s& Q3 ?0 {  k: [& r& p+ o
47. 
      a/ z4 {% a: c& h
48.         return true;
      W+ M' |' Q0 O2 k
49.     }
    
50. 
    4 M& U8 c+ [# ?5 l" e& Q
51.     return false;
    9 D6 }- K% i2 e, w# P
52. }

复制代码

8 _3 |( G: F% Z
8 l) ^5 F( e" ~2 q( e& a