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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: l4 H7 z9 _; g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！

4 {; z% A% p) SSession *theSession = Session::GetSession();
8 l- _" G. y% ]4 O& W. |0 K        UI         *theUI = UI        ::GetUI();
        Part *workPart (theSession->Parts()->Work());

        // initialize the select
. p2 A1 ?% M' L" U0 t        std::vector <Selection::MaskTriple> masks(1);
+ L7 G& d% c) _6 o, F        Selection::MaskTriple mask;
; b, x# K3 ~+ z4 H        mask.Type=UF_feature_type;
        mask.Subtype =0;
        mask.SolidBodySubtype=0;
7 [+ e8 Q7 h; d  z        masks.push_back(mask);
        //masks[0] = {{UF_feature_type,0,0}};
9 J/ B  N+ A! Y/ l( ^7 W4 [# R- J: V7 d        TaggedObject *object;
3 h+ d5 y1 a" G! F# d        std::stringstream ss;
        Point3d cursor;
/ X; e- `- D4 a& a3 t$ ?3 s4 y  w        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
! }  U( Y4 Z# s6 V        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
( k/ _  E1 k2 W) \. o* @0 j/ Z        Selection::Response res;
        Features::Feature * getFeature = NULL;
1 w$ Y' a* }' B# h' T- r        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
                {
" l8 j/ k4 H2 ]5 c6 F                        // get the information
                         getFeature = dynamic_cast<Features::Feature *>(object);
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          theSession->ListingWindow()->WriteLine("the select feature type is : " +getFeature->FeatureType() + "\n");
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6 x1 k- T  V& s! i                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
                 {
4 d+ I. F  F7 V5 }9 d3 v% u6 P7 F                         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++)
0 {8 _9 j! r# k0 v- V                         {   
                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
                         }
& I! o4 o" h! l& o5 N7 W# ?                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
7 Q* x( w( g7 e7 c0 c$ ^                         exp[0]->SetRightHandSide("400");
                         theSession->UpdateManager()->DoUpdate(undomark);
                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
% I0 j; U1 \/ P: c                 }
7 Y1 e' b, F5 ]# I2 t# O          }
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