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！

; H) h. `3 q/ I+ z, T9 i2 KSession *theSession = Session::GetSession();
$ y/ h+ a, _* s        UI         *theUI = UI        ::GetUI();
  E/ }! P# A: [        Part *workPart (theSession->Parts()->Work());
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$ j3 S3 n# R3 t6 ]* Q' P; O0 {, H        // initialize the select
        std::vector <Selection::MaskTriple> masks(1);
        Selection::MaskTriple mask;
$ n! r' Q& E; o8 ^5 K6 j6 V8 u        mask.Type=UF_feature_type;
        mask.Subtype =0;
        mask.SolidBodySubtype=0;
        masks.push_back(mask);
        //masks[0] = {{UF_feature_type,0,0}};
        TaggedObject *object;
        std::stringstream ss;
: k9 }& m8 M, T1 H/ m- F        Point3d cursor;
& M2 |) }/ P& Y$ o! Y        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
- A' v- e8 \. ^$ d2 z, A! [* @) P8 O        Selection::Response res;
" B- k8 s! Y0 A7 y6 B* k        Features::Feature * getFeature = NULL;
9 F- {" p, W% M3 b+ B& c( Q        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
8 J) B( X! {- r5 r6 F# T9 D                {
+ }& ?; R! I2 N$ C% |& l- Q' a                        // get the information
* ]# c3 j+ n( H, e8 C, t                         getFeature = dynamic_cast<Features::Feature *>(object);

          theSession->ListingWindow()->WriteLine("the select feature type is : " +getFeature->FeatureType() + "\n");
  q* M- \( f% I1 t# I9 B! ^
! v5 c8 n! I/ H! F# D8 V6 O                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
% L0 r. h' D. P5 s% C; G1 |$ d7 t                 {
( m; G# l" ]/ t% d$ C                         Features::Sphere *getSphere = dynamic_cast<Features::Sphere *>(getFeature);
                         std::vector<Expression *> exp =  getSphere->GetExpressions();
3 y# l, [* R6 `3 ~: [/ d                         ss << exp.size() <<endl;
                         theSession->ListingWindow()->WriteLine("the expression number is : "  + ss.str() );
7 x! M2 ]1 i+ P1 U                         for(unsigned int i =0 ; i< exp.size();i++)
$ i+ ~3 h$ x+ ~4 I; F                         {   
0 W, c: M2 P; T+ [' y                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
                         }
                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
9 Y0 Q, T( @3 h  m                         exp[0]->SetRightHandSide("400");
# |  Q5 B% I/ d5 ^                         theSession->UpdateManager()->DoUpdate(undomark);
                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
+ z+ ?. |5 u7 ~, l1 i                 }
5 W9 P2 d: O+ J7 C' }, ~+ H( b          }
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