NX二次开发培训源码分享： 通过选择指定特征，修改特征...

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! \: x5 {0 v+ |# Q4 y创建一个选择feature的功能，当用户选择的是sphere的时候，让用户选择更改球的直径！

1 \# K, J0 K4 J1 N6 OSession *theSession = Session::GetSession();
+ B7 e+ |( K6 h  C  q- s        UI         *theUI = UI        ::GetUI();
& Q7 c% v- v; Q0 h        Part *workPart (theSession->Parts()->Work());

3 |. c% N: ^2 m; T* z& I1 ^        // initialize the select
        std::vector <Selection::MaskTriple> masks(1);
        Selection::MaskTriple mask;
        mask.Type=UF_feature_type;
        mask.Subtype =0;
        mask.SolidBodySubtype=0;
8 w2 p2 r+ y' z5 l; c1 z4 f, y% D; R        masks.push_back(mask);
        //masks[0] = {{UF_feature_type,0,0}};
        TaggedObject *object;
        std::stringstream ss;
        Point3d cursor;
        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
, l. g  x: U( x$ [: y8 T        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
        Selection::Response res;
        Features::Feature * getFeature = NULL;
        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
' x, x4 _/ F+ G7 _! R4 E, c        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
" v8 w/ P7 d5 `                {
; C- I7 l' z/ Y0 {1 q" u7 `7 C! b3 T                        // get the information
. }( x6 ^& B; s: z6 K- `  u  |                         getFeature = dynamic_cast<Features::Feature *>(object);

          theSession->ListingWindow()->WriteLine("the select feature type is : " +getFeature->FeatureType() + "\n");

0 K3 |! m( t: w) I9 ]! {                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
                 {
# `: j' A! G) u$ y" G. }                         Features::Sphere *getSphere = dynamic_cast<Features::Sphere *>(getFeature);
2 _4 u/ ?- }1 V                         std::vector<Expression *> exp =  getSphere->GetExpressions();
$ F4 d" j% T! ^" R" k% |$ \( w                         ss << exp.size() <<endl;
- C' z8 p) v8 s- i. ~, x' l$ M                         theSession->ListingWindow()->WriteLine("the expression number is : "  + ss.str() );
                         for(unsigned int i =0 ; i< exp.size();i++)
                         {   
                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
                         }
0 E7 d2 T1 W% {4 W3 z0 i1 W2 \                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
4 Q! U: ], d0 _+ e( e$ N                         exp[0]->SetRightHandSide("400");
) ?' F6 n* r; A" k" z3 S* O4 Y                         theSession->UpdateManager()->DoUpdate(undomark);
                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
                 }
          }
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