NX二次开发源码分享： NXOpen C++获取面的面积和周长

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4 _' P" f6 x9 c( x/ K8 oNX二次开发源码分享： NXOpen C++获取面的面积和周长
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1 c/ ?9 k8 }# x0 \5 S[mw_shl_code=cpp,true]double MyClass::MeasureFaceArea(TaggedObject* face_tag)
+ I( J- |9 p6 L{
# E2 {1 s( B) P1 m8 i; x2 @4 p    char str[256];
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    Unit *unit1(dynamic_cast<Unit *>(workPart->UniTCollection()->FindObject("SquareMilliMeter")));
7 U1 J; T5 m& G4 \( x" `    Unit *unit2(dynamic_cast<Unit *>(workPart->UnitCollection()->FindObject("MilliMeter")));
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    //FaceCollector issue is fixed in NX9
    NXObject *nullNXObject(NULL);
    MeasureFaceBuilder *measureFaceBuilder1;
    measureFaceBuilder1 = workPart->MeasureManager()->CreateMeasureFaceBuilder(nullNXObject);
        
    Face *face1 = dynamic_cast<Face *>(face_tag);
6 w* f) s1 ^: e% u    vector<Face *> faces1(1);
    faces1[0] = face1;
% }* i9 g$ Z/ ~0 J- X3 E1 w2 {1 X' k    FaceDumbRule *faceDumbRule1;
5 t. Z& ^! _9 E: p3 J) v$ n& _, Q    faceDumbRule1 = workPart->ScRuleFactory()->CreateRuleFaceDumb(faces1);
$ F7 ^& |$ D4 w2 h' ~, S   
$ K  m% Y" M/ h7 Q    std::vector<SelectionIntentRule *> rules1(1);
7 B( l( e, z4 s4 F    rules1[0] = faceDumbRule1;
    measureFaceBuilder1->FaceCollector()->ReplaceRules(rules1, false);
    NXOpen::NXObject *nxObjct1 = measureFaceBuilder1->Commit();

    NXOpen::ScCollector *scCollector1 = measureFaceBuilder1->FaceCollector();

$ A0 t- ~$ C; [    MeasureFaces *measureFaces1;
% h, H0 m* G/ D* x    measureFaces1 = workPart->MeasureManager()->NewFaceProperties(unit1, unit2, 0.99, scCollector1);

5 d% A- |- }6 i! B) }9 X1 d    double face_area = measureFaces1->Area();
7 A+ I' P; d4 Y3 @: j+ L    sprintf_s(str, sizeof(str), "Selected Face Area: = %f",face_area);
, w5 h% c0 z+ e3 |+ ?# F. [    print(str);
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; p8 o2 n5 Z6 \9 s4 G    double face_perimeter = measureFaces1->Perimeter();
1 h8 |! v7 a+ x& t8 }0 o    sprintf_s(str, sizeof(str), "Selected Face Perimeter: = %f",face_perimeter);
    print(str);

# g. }# c3 @/ U- \    delete measureFaces1;   
    delete faceDumbRule1;
. ]& S& ]; d: ^; u    measureFaceBuilder1->Destroy();
# X! G, h6 H) c; J+ g/ X    return face_area;
}
[/mw_shl_code]
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rkc_555

这个方法我试过了，我8.5的版本好像不行，计算的面积为0，可以直接创建measureFaces对象，用另一个重载函数，只要两行代码就能计算出面积