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
, Q/ |( l* {; a6 _5 [3 \

1. //------------------------------------------------------------------------------
   ; ]  E+ E  p% T7 H% \( ~) X& J3 ^
2. // Select Screen Position and map to Modeling View Plane
   5 b6 O/ t) {! T% j
3. //------------------------------------------------------------------------------
   
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   # G" D, y, d$ L6 m9 V: ]
5. {
   4 R4 M! |6 m% S( A6 \/ |
6.     NXOpen::View* myView = NULL;
   5 ], J9 E4 w5 }. f9 U, t0 j
7.     NXOpen::Point3d myCursor(0, 0, 0);
   
8. 
   * a# c% b& |5 ?+ k8 ~. G  `
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    0 J9 A9 ~. r' c' u$ [1 t! P# f; [* [
11.     {
    + Y1 m, B& l* P  q
12.         // obtain the current default annotation plane where PMIs are placed on
    
13.         NXOpen::Xform *xform1;
    
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    ; g/ t6 ?! J: {' b
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    4 `  _2 o, X0 \% G
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
      a& G& g, s1 O& K
18. 
    / H& A% r! M8 R
19.         // create the ray 'into the screen' at the selected cursor position
    + w, }( ~) F/ R4 s/ j
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);
    ! t  `  G1 s7 ^' a
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
    
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    
24.         lineRay->SetName("Ray");
    
25. 
    
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);
    0 ^- @9 s) S- Z  @" z
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
29.         planeView->SetName("ViewPlane");
    
30. 
    ; R1 |6 k1 V' p9 q' ~7 k. \: r
31.         // now create the intersection point
    8 L* }# v0 R9 y8 h" S# a& h' A3 F
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");
    
36. 
    
37.         pos = pntInterSect->Coordinates();
    ! Y, I) ]' M0 I; c6 I, L
38.         print("\nPMI Position:", pos);
    
39. 
    
40.         // clean up - comment to see intermediate objects
    * ~5 e* J/ p: \' w3 R4 P* s
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    ! r) D" F& R7 s7 n4 [
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    & P: h  @# B; f6 e( G, p
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    ! D9 ?& B' d& o0 l; l
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    + P3 a5 `- r  z) f$ N
46.         m_session->DeleteUndoMark(markDel, NULL);
    6 `* M) ]' f, I3 z( `
47. 
    
48.         return true;
    
49.     }
    1 G' V& T/ r$ m5 H# W9 {
50. 
    
51.     return false;
    
52. }

复制代码

+ s% s4 e' F8 U7 E  X; K/ a6 f