如何获取选择点映射到视图空间中？源码分享

admin

+ \; O; _1 T1 j4 d) v
如何获取选择点映射到视图空间中？源码分享
" L: F5 g" e; L9 F# e
, I' E/ v+ j6 @

1. //------------------------------------------------------------------------------
   1 @) Q) o3 j7 J% h/ j" m
2. // Select Screen Position and map to Modeling View Plane
   
3. //------------------------------------------------------------------------------
   4 d5 z  I+ f/ ]6 P% ^
4. bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
   + }2 V0 G" @# W! `
5. {
   + c$ E' \1 v1 |" u6 F: ~2 F' j
6.     NXOpen::View* myView = NULL;
   
7.     NXOpen::Point3d myCursor(0, 0, 0);
   
8. 
   
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
    1 `: n: X3 S+ g- r% v% b, h* f5 g
13.         NXOpen::Xform *xform1;
    
14.         xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
    ! h" }8 e- \" v% h' u
15.         NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
    3 }) @' D# C0 @5 I1 `9 h
16.         NXOpen::Point3d ptDefaultPlane = xform1->Origin();
    
17.         NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
    + ]1 r4 k7 q' O) v
18. 
    
19.         // create the ray 'into the screen' at the selected cursor position
    3 I- y9 n7 e) O6 W
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);
    ! f: j9 x5 r5 D) @  O' }* v) Z! F6 f$ ~
22.         NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
      G' m  Y3 O0 S5 z1 ]
23.         NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
    
24.         lineRay->SetName("Ray");
    ) y! ]& x, |7 a+ R
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);
    : J5 Q+ E6 |. {$ l9 r1 p, o7 w
29.         planeView->SetName("ViewPlane");
    
30. 
    ; B) o9 X! \% P% z- c2 L
31.         // now create the intersection point
    % s" ^/ ^0 F: j$ ^1 \
32.         NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
    . j# w+ ?- V9 b  y9 Z" Y
33.         pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
    * p9 c1 H$ Q% R2 w! b/ ~" C# R2 M
34.         pntInterSect->SeTColor(10);
    * W8 \  m  E; W9 g) l
35.         pntInterSect->SetName("Intersection");
    
36. 
    
37.         pos = pntInterSect->Coordinates();
    & @8 L5 ~- G/ t( y$ `6 f" z8 q
38.         print("\nPMI Position:", pos);
    
39. 
    # ]" H  ?! `: J  e. Q- t
40.         // clean up - comment to see intermediate objects
    3 `" A7 }* P6 X6 k9 G% D1 m$ H
41.         NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
    - G0 k4 C4 i; J
42.         int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
    
43.         int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
    
44.         int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
    ) C5 L3 g; m5 v) G3 t
45.         int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
    
46.         m_session->DeleteUndoMark(markDel, NULL);
    9 R' {, v/ [7 J4 Q
47. 
    7 E+ U5 j3 e# N+ ^
48.         return true;
    
49.     }
    - k% p' Q9 z3 X
50. 
    
51.     return false;
    ! X; O4 p/ ^3 i( M$ a. G
52. }

复制代码

0 J6 U" i6 ?3 H' B