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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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！

+ D4 }6 y0 ]. _, M) ?' |Session *theSession = Session::GetSession();
. R; N7 }5 C/ e- d        UI         *theUI = UI        ::GetUI();
' N9 Y! j" M# j: U3 D, w" ]. Z        Part *workPart (theSession->Parts()->Work());

. I/ U/ c# V# x: P% ^        // initialize the select
( }" Q: }7 I+ L& K        std::vector <Selection::MaskTriple> masks(1);
% K8 v1 ^1 s" `/ u! ^8 `$ `        Selection::MaskTriple mask;
, u  }5 D0 x' M+ t4 x        mask.Type=UF_feature_type;
        mask.Subtype =0;
        mask.SolidBodySubtype=0;
& q' K8 x. K3 @" C$ x. ^8 j        masks.push_back(mask);
0 _, Y; ^7 V1 |        //masks[0] = {{UF_feature_type,0,0}};
% s  |; d6 Q4 @( {$ l        TaggedObject *object;
) Q" x! E- h2 S        std::stringstream ss;
0 R9 X3 u% v, w' x        Point3d cursor;
6 B- ^4 E5 }' g' P+ K        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
" z4 k# `3 e0 ?) O0 a9 i9 q8 T  q7 S        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
; V- b: n4 J* G: I        Selection::Response res;
  ~& r; |- u6 }9 l0 `        Features::Feature * getFeature = NULL;
9 e) T% G: R* m& r        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
                {
9 W, {) q2 {" W+ i5 l+ A  Q                        // get the information
                         getFeature = dynamic_cast<Features::Feature *>(object);
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6 n7 c1 }3 _% l7 Z. g          theSession->ListingWindow()->WriteLine("the select feature type is : " +getFeature->FeatureType() + "\n");
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                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
                 {
                         Features::Sphere *getSphere = dynamic_cast<Features::Sphere *>(getFeature);
% Y8 `* ?+ C  G" H7 f+ ^                         std::vector<Expression *> exp =  getSphere->GetExpressions();
                         ss << exp.size() <<endl;
# t  a/ k, p, E8 d! J9 ?                         theSession->ListingWindow()->WriteLine("the expression number is : "  + ss.str() );
                         for(unsigned int i =0 ; i< exp.size();i++)
6 Z( x" B! W' a: |. {                         {   
                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
, B- [5 e4 }( b, b* `2 D                         }
" L5 a9 z( t- W2 }( z/ q( C                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
                         exp[0]->SetRightHandSide("400");
* ?) q$ G+ ^; L& J' j7 N                         theSession->UpdateManager()->DoUpdate(undomark);
                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
$ d% A$ I" P4 S( t2 S2 I' }                 }
          }
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