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以下是核心代码：

static void changeColor(std::vector<NXOpen::DisplayableObject *>displayobjects,int color)

{ Session *theSession = Session::GetSession();

//Part *workPart = theSession->Parts()->Work();

DisplayModification *displaymodification = theSession->DisplayManager()->NewDisplayModification();

displaymodification->ApplyToAllFaces();

displaymodification->SetNewColor(color);

displaymodification->Apply(displayobjects);

delete displaymodification;

}

static void do_UGopen_api()

{

Session *theSession = Session::GetSession();

Part *workPart = theSession->Parts()->Work();

BodyCollection *bc = workPart->Bodies();

ListingWindow *lw = theSession->ListingWindow();

int cylindercount=0,plannarcount = 0 ;

vector<DisplayableObject*> cylinderfaces;

vector<DisplayableObject*> plannarfaces;

// get the body then to get the faces

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{

Body *body = (*it);

// get faces

std::vector<Face*> faces = body->GetFaces();

for(int j =0 ; j <faces.size();j++)

{

Face *face = faces[j];

if ( face->SolidFaceType()==Face::FaceTypeCylindrical)

{

cylindercount++;

cylinderfaces.push_back(dynamic_cast<DisplayableObject*>(face));

}

if( face->SolidFaceType()==Face::FaceTypePlanar)

{

plannarcount++;

plannarfaces.push_back(dynamic_cast<DisplayableObject*>(face));

}

}

}

// change color

changeColor(cylinderfaces,186);

changeColor(plannarfaces,6);

lw->Open();

char msg[133];

sprintf(msg,"The Cylinder faces count is :%d\n",cylindercount);

lw->WriteLine(msg);

sprintf(msg,"The Plannar faces count is :%d\n",plannarcount);

lw->WriteLine(msg);

}

//核心代码结束