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！

" N( _; e- J( C) e) E5 W7 A4 cSession *theSession = Session::GetSession();
9 v. U+ C3 Y* f  J8 X  w5 X% X        UI         *theUI = UI        ::GetUI();
        Part *workPart (theSession->Parts()->Work());
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        // initialize the select
. ]+ g) r) ?" U6 [& M( Y        std::vector <Selection::MaskTriple> masks(1);
        Selection::MaskTriple mask;
: ?9 R2 O8 d: S/ l0 n1 X        mask.Type=UF_feature_type;
6 z2 J. r8 b! i( v        mask.Subtype =0;
- t8 Y+ O2 W, ]% M. D; d        mask.SolidBodySubtype=0;
9 [: h) J. B+ b" K; X# G1 R& U% @  H        masks.push_back(mask);
        //masks[0] = {{UF_feature_type,0,0}};
8 A2 m6 L0 I) [, B        TaggedObject *object;
' A  u  ~8 R+ C! ~9 ?$ w4 l        std::stringstream ss;
        Point3d cursor;
        Selection::SelectionScope scope =  Selection::SelectionScopeUseDefault;
+ }, F( `$ g+ J9 z& ^0 w# Z5 z        Selection::SelectionAction action = Selection::SelectionActionClearAndEnableSpecific;
        Selection::Response res;
2 w5 i+ O; i5 M+ [4 r4 r4 @        Features::Feature * getFeature = NULL;
        res = theUI->SelectionManager()->SelectTaggedObject("select a feature:","feature select",scope,action,false,false,masks,&object,&cursor);
        if(res == Selection::ResponseObjectSelected || res == Selection::ResponseObjectSelectedByName)
8 K0 I9 C- G, ?& A9 ?. n                {
                        // get the information
, o/ @1 ~- m; o8 O* `: |( T. O. a& O                         getFeature = dynamic_cast<Features::Feature *>(object);
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# |( ]- U$ g1 D# C+ c' E          theSession->ListingWindow()->WriteLine("the select feature type is : " +getFeature->FeatureType() + "\n");

- |+ B) x" }7 M; a                 if (!strcmp(getFeature->FeatureType().GetUTF8Text(),"SPHERE"))
                 {
                         Features::Sphere *getSphere = dynamic_cast<Features::Sphere *>(getFeature);
0 |% n; F+ v- \# X                         std::vector<Expression *> exp =  getSphere->GetExpressions();
6 K4 s7 X' e  K( ^# V3 m- o- b( K                         ss << exp.size() <<endl;
                         theSession->ListingWindow()->WriteLine("the expression number is : "  + ss.str() );
& R1 M* o6 D. |5 B- {. \- m6 [                         for(unsigned int i =0 ; i< exp.size();i++)
                         {   
2 X6 J. r/ x- w7 B" m1 a9 O5 i' r, @                                  theSession->ListingWindow()->WriteLine("The expressions are : " + exp[i]->Equation()+"\n");
9 m4 ^( Z5 o& b- s/ l                         }
                         Session::UndoMarkId undomark = theSession->SetUndoMark(Session::MarkVisibilityVisible,"change the exp");
                         exp[0]->SetRightHandSide("400");
                         theSession->UpdateManager()->DoUpdate(undomark);
3 ?& d: r- w1 u, V                         theSession->ListingWindow()->WriteLine("The expressions are : " + exp[0]->Equation()+"\n");
* e' t6 W3 u3 ?/ m7 G9 v6 U4 K9 q  k                 }
/ W$ U$ q( u! q, g2 n          }

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