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

( Q8 ]" m1 R7 T% X7 q

1. //------------------------------------------------------------------------------
   ( o3 L# ^7 O# e
2. // Select Screen Position and map to Modeling View Plane
   9 v1 O' I: d- I' P
3. //------------------------------------------------------------------------------
   
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   ) s9 v; i% k! [; w5 @! {
5. {
   
6.     NXOpen::View* myView = NULL;
   
7.     NXOpen::Point3d myCursor(0, 0, 0);
   
8. 
   ! c' H3 l6 i. W1 H
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   1 O! d9 f, }& k: g
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    
11.     {
    1 s! t5 ~2 t6 H( j5 a/ K5 D0 U
12.         // obtain the current default annotation plane where PMIs are placed on
    & u$ x9 @3 O& d5 O* F# B" S
13.         NXOpen::Xform *xform1;
    8 K- I+ D5 `* r% c$ v0 J' \
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    3 o" K% H; v  h& v5 I( c3 m
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    
18. 
    ' y5 l8 R9 O$ C- n6 Z. i/ i
19.         // create the ray 'into the screen' at the selected cursor position
    
20.         NXOpen::Matrix3x3 vmx = myView->Matrix();
    3 |0 g0 I9 m; i5 i3 L3 P
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);
    1 i" [) q7 S5 g" ~  v
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    $ ?9 o% Y! [% Z# M1 w
24.         lineRay->SetName("Ray");
    4 u/ G) q0 U$ i6 x0 h$ s- t! n: H
25. 
    
26.         // create the plane from the view to intersect with the ray
    4 I" T1 y! O, }( m7 u
27.         NXOpen::Plane *planeView = m_wpart->Planes()->CreatePlane(ptDefaultPlane, vecDefaultPlane, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
      f' m  E" l0 t; g6 m& w
29.         planeView->SetName("ViewPlane");
    
30. 
    ) a$ F0 |9 @; q7 z: v" z3 N. g
31.         // now create the intersection point
    & w5 }7 [- |4 r3 [7 t. ~6 _* Q1 ?
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    # |) n4 Z" q$ U! G9 Q) c" ^( b
34.         pntInterSect->SeTColor(10);
    
35.         pntInterSect->SetName("Intersection");
    3 x# y& S5 T' U9 O3 w" {; R
36. 
    ; K( t$ ?' S: m! k
37.         pos = pntInterSect->Coordinates();
    
38.         print("\nPMI Position:", pos);
    
39. 
    : z0 k8 |4 V3 X1 ~) ]# f2 [( r
40.         // clean up - comment to see intermediate objects
    
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    0 n$ U" Z- b. T! e
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    - h# i" z7 c( T  g4 q
46.         m_session->DeleteUndoMark(markDel, NULL);
    
47. 
    4 z& v6 j0 W% V0 J, K* D  L
48.         return true;
    
49.     }
    
50. 
    9 ?1 C* k6 b" @6 d  d  h- ^/ B5 E
51.     return false;
    
52. }

复制代码