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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( s4 [$ s9 P( U/ n+ a% |! Z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！
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Session *theSession = Session::GetSession();
        UI         *theUI = UI        ::GetUI();
  {4 R% T5 @6 P4 }        Part *workPart (theSession->Parts()->Work());
* Y2 U$ z) v5 Q2 b% e/ F
2 K+ d+ @* M5 l  c" Z        // initialize the select
! u' M8 D) ?% G0 ~9 o        std::vector <Selection::MaskTriple> masks(1);
        Selection::MaskTriple mask;
# ?( f/ A6 W9 X/ g& x6 f4 r' P        mask.Type=UF_feature_type;
        mask.Subtype =0;
! X$ E+ p3 d* M% Q/ \, j: P* y# b        mask.SolidBodySubtype=0;
$ G/ W3 Y' y5 k! E8 D' D5 F        masks.push_back(mask);
        //masks[0] = {{UF_feature_type,0,0}};
; r4 K2 l$ H; t7 K8 o* s! `: i% _        TaggedObject *object;
9 t, A1 x! c8 o/ S5 h# `        std::stringstream ss;
1 ~/ G- J- x# D) u4 j& m6 A# ?1 H        Point3d cursor;
( h% H% g' y& c3 q4 a1 b3 ?# x% S        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
        Selection::Response res;
+ b  z/ T: k% Q9 E5 A1 R9 B& p% j        Features::Feature * getFeature = NULL;
! B- Z: L- M9 @- s% e" V, [        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
1 H! M' ~2 O3 i) a; W( X9 [! f6 [        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
                {
; w" c! f) Y( ]5 B/ I, F                        // get the information
2 ?. `) O( ^/ F. e8 S                         getFeature = dynamic_cast<Features::Feature *>(object);

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

) V, i- w& q, U- h: |                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
$ s; e' t$ u7 `, }                 {
                         Features::Sphere *getSphere = dynamic_cast<Features::Sphere *>(getFeature);
                         std::vector<Expression *> exp =  getSphere->GetExpressions();
                         ss << exp.size() <<endl;
                         theSession->ListingWindow()->WriteLine("the expression number is : "  + ss.str() );
                         for(unsigned int i =0 ; i< exp.size();i++)
7 R8 D/ o: D: v) \( b3 U                         {   
: g' x6 a9 _- O                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
& |' W7 \+ X7 l$ W9 P& T                         }
& \8 Z! _+ b3 |% G6 {                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
' e/ o$ R& R# C  [& f3 i& v/ l1 s                         exp[0]->SetRightHandSide("400");
3 [- h* c: N& }                         theSession->UpdateManager()->DoUpdate(undomark);
                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
                 }
: @& N. P' ]3 e$ p+ K6 C          }

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