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% U1 ~* P6 W0 ~: Q3 N7 QNX二次开发源码分享：查找体中最大的面积 W/ o" d' G* x, {3 o: Q: t1 H
通过MeasureFaces 下的area方法可以得到面的面积进行遍历查询- s* ^2 F6 c! J* o+ M
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: }; J* ]" ?) Z% y( h' F! X- #include <NXOpen/Session.hxx>
: C2 `( A6 o" Z: q- U! R6 [ - #include <NXOpen/Part.hxx>6 s' B" m8 [2 r$ K, z9 L, s, e! W
- #include <NXOpen/ParTCollection.hxx> o% C3 j3 H( z
- #include <NXOpen/MeasureManager.hxx>
" h; h0 b2 {- | - #include <NXOpen/MeasureFaces.hxx>% d5 ^5 ~5 g6 b
- #include <NXOpen/NXObject.hxx>+ a' u3 f$ T+ |4 Q
- #include <NXOpen/NXObjectManager.hxx>
* ]4 T+ U, R' F) l m* W+ m - #include <NXOpen/Body.hxx>8 q4 }5 z, m8 |
- #include <NXOpen/Face.hxx>
' u( \. L/ G8 W+ B# u - #include <NXOpen/Unit.hxx>
) }7 J. X/ o B! G4 K, G" A5 O/ c9 D - #include <NXOpen/UnitCollection.hxx>
" K. e+ Q9 {( d: ` - using namespace NXOpen;0 H9 G/ p) g, x, G1 ]5 v6 }6 ]
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- static tag_t ask_largest_face_interop(tag_t body_tag)
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4 Q0 y$ l8 w, ~ - Session *theSession = Session::GetSession();
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) T' u/ T. V+ N ?- Part *workPart(theSession->Parts()->Work());
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% u2 N. s$ [7 r( M7 Q' A- Unit *area_units = workPart->UnitCollection()->GetBase("Area");& \% f( c, _$ O i# b
- Unit *length_units = workPart->UnitCollection()->GetBase("Length");! u9 R3 z9 ?+ s& L
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- Body *theBody = dynamic_cast<Body *>(NXObjectManager::Get(body_tag));
6 S, ^- b1 t# f% s - std::vector<Face *> theFaces = theBody->GetFaces();
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- double bigArea = 0;
! u0 |1 [( `! ?% U6 ~0 k - Face *bigFace;
( O/ _5 X: F9 L/ k6 U - std::vector<IParameterizedSurface *> theFace(1);
( c( ]) O: K; ~ - for (int ii = 0; ii < theFaces.size(); ii++)
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- theFace[0] = dynamic_cast<IParameterizedSurface *>(theFaces[ii]);
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- MeasureFaces *theMeasure = workPart->MeasureManager()->: Y4 s ~* `- y' Q/ |5 c% h
- NewFaceProperties(area_units, length_units, 0.999, theFace);
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+ t m3 N3 ~- O- T- if (theMeasure->Area() > bigArea)
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' m. o3 |, v+ C - bigArea = theMeasure->Area();$ f3 F- d# R, W4 _% N4 j6 L1 H
- bigFace = theFaces[ii];
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- }
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- return bigFace->Tag();( \2 \' I9 s% m8 \
- }
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