如何获取选择点映射到视图空间中？源码分享

admin

; F" k+ V5 H9 E+ b0 w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. //------------------------------------------------------------------------------
   4 r% K: @6 @, c
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   
5. {
   
6.     NXOpen::View* myView = NULL;
   - H! m( W' l) z  }
7.     NXOpen::Point3d myCursor(0, 0, 0);
   ! X8 A# R+ G4 U5 l" I0 A6 P
8. 
   3 d0 e( e  ^/ u* s2 r6 \
9.     NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
   
10.     if (myResponse == NXOpen::Selection::DialogResponsePick)
    
11.     {
    
12.         // obtain the current default annotation plane where PMIs are placed on
    7 d0 ^. Z& Z1 K4 c7 j/ z
13.         NXOpen::Xform *xform1;
    ) ^9 E# T! F9 P. b
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    & c$ H7 L1 F# g2 L; X! U' J
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    1 F+ e9 R) Z" K1 q( b1 ^/ h: Q
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    
18. 
    * s( a2 U3 _3 U$ i9 z
19.         // create the ray 'into the screen' at the selected cursor position
    
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);
    
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
    1 g4 Q% F9 r/ G/ X. m* q" [
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    
24.         lineRay->SetName("Ray");
    - R$ H& O! k5 k1 z3 g! n
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);
    
28.         planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
29.         planeView->SetName("ViewPlane");
    2 G  z1 o- |# S- K% X1 }
30. 
    8 y9 L4 t3 F# G( q+ A0 T' |
31.         // now create the intersection point
    & Q  U4 B) v" p; Y4 w3 o2 S
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    1 j' g2 r! Y9 [( F+ w( K, N' |$ x
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    
34.         pntInterSect->SeTColor(10);
    
35.         pntInterSect->SetName("Intersection");
    + Z$ y0 N6 b7 Q5 @2 l( t! s
36. 
    6 P% _$ d3 q! r, V7 J6 {
37.         pos = pntInterSect->Coordinates();
    ( M- j) E2 v5 h% Z9 {$ p$ h3 J* Q
38.         print("\nPMI Position:", pos);
    ; O. A- n' d4 t" _$ \+ j
39. 
    . Z( o# P8 H- ^% L# i* _
40.         // clean up - comment to see intermediate objects
    4 P  u9 u$ G$ j  K% `* z
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);
    # |# a  p  ]9 G2 A
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    % b2 p2 {$ Y0 A
46.         m_session->DeleteUndoMark(markDel, NULL);
    6 W& ~5 B6 v8 q- X) @0 {  f
47. 
    
48.         return true;
    
49.     }
    " j. ?3 V' @) s( w& [3 E
50. 
    0 p1 x! N0 ?: F% m- k& p
51.     return false;
    # Y5 A. ?# v9 @
52. }

复制代码

' N4 f( Y2 |+ ~* c. [) I$ z
4 c# l( v9 M/ d; h