如何获取选择点映射到视图空间中？源码分享

admin

' e) x; P/ E, t$ j. t/ a( d/ g
如何获取选择点映射到视图空间中？源码分享

1. //------------------------------------------------------------------------------
   
2. // Select Screen Position and map to Modeling View Plane
   
3. //------------------------------------------------------------------------------
   5 l5 @& F, X+ \0 b9 k) \0 f5 D
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   , @: R7 t: i% }: Z* [" B
6.     NXOpen::View* myView = NULL;
   
7.     NXOpen::Point3d myCursor(0, 0, 0);
   ' g# K* {! ~# p0 V, G- J
8. 
   . |1 W4 w: i8 D2 B5 E. S
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   + F9 c! ^2 w$ P% d! K
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    
11.     {
    
12.         // obtain the current default annotation plane where PMIs are placed on
    7 M3 W3 q3 m( b3 W
13.         NXOpen::Xform *xform1;
    4 I& S1 i$ N8 t' H3 f2 Q) x
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    * j0 V. h( s6 M: o$ j( E1 `
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    ; x1 i- m" Z, `0 ]6 ~0 `2 ^* g
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    + P+ j7 Y, G& a$ q. ?! P. S1 ~
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    
18. 
    
19.         // create the ray 'into the screen' at the selected cursor position
    - c! M2 ]$ H! H# x4 @! z; ?! P
20.         NXOpen::Matrix3x3 vmx = myView->Matrix();
    8 }! y5 X* U' j0 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);
    
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    
24.         lineRay->SetName("Ray");
    
25. 
    ) i7 Z' h3 ?6 o
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);
    - T2 ^# D5 K- C
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    - k) r3 ~  E: a) G2 `% G
29.         planeView->SetName("ViewPlane");
    $ {( B- a# h, t1 \' X5 Y  J! I
30. 
    * [2 P4 Z% v# Q) y7 m" j3 C+ {5 h3 e
31.         // now create the intersection point
    , ?) ]  ?, i' L+ _2 k
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    ' F& T6 i# l- k8 J
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
34.         pntInterSect->SeTColor(10);
    , x  T' _" o- F% l) y8 U
35.         pntInterSect->SetName("Intersection");
    
36. 
    ) ]1 U2 H) e% l( f' x
37.         pos = pntInterSect->Coordinates();
    & N0 g9 _8 c( z
38.         print("\nPMI Position:", pos);
    - A( b5 K- Z6 p) d$ w+ d6 e
39. 
    
40.         // clean up - comment to see intermediate objects
    ' I) L5 F3 K( o9 W9 x
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    6 n: ^3 X7 n8 g* V
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    & r1 p) D( K5 l2 n1 r# B* r
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    : P! V' u+ y3 j
46.         m_session->DeleteUndoMark(markDel, NULL);
    + S. f4 h  }. N% X% |
47. 
    
48.         return true;
    
49.     }
    
50. 
    : d+ h- d* w  G9 C& j0 L8 w* N5 W! i
51.     return false;
    
52. }

复制代码

( ~5 ?" p1 E4 \( W
) ]5 m! e6 f4 \8 s& {, f. d# w