NX二次开发——测量距离（两个对象之间最近、最远距离）

一、概述

最近看到一些文章比较有趣，所以做个记录，顺便写一下博客，附上全部代码，方便刚从事NX二次开发同僚的理解。本次主要模拟NX自带的测量工具中对两个实体对象进行测量距离。NX系统功能如下所示：

二、代码解析

主要代码：

void measureDistance(tag_t objTAG1, tag_t objTAG2, double &MeasureDistance_Max, double &MeasureDistance_Min)
{double retMax = 0.0, retMin = 0.0;NXOpen::Session* theSession = NXOpen::Session::GetSession();NXOpen::Part* workPart(theSession->Parts()->Work());//测量对象1NXOpen::DisplayableObject* object1(dynamic_cast<NXOpen::DisplayableObject*>(NXObjectManager::Get(objTAG1)));//测量对象2NXOpen::DisplayableObject* object2(dynamic_cast<NXOpen::DisplayableObject*>(NXObjectManager::Get(objTAG2)));NXOpen::MeasureDistance* measureDistance0;NXOpen::MeasureDistance* measureDistance1;// 获得最远距离measureDistance0 = workPart->MeasureManager()->NewDistance(NULL, NXOpen::MeasureManager::MeasureType::MeasureTypeMaximum, object1, object2);// 获得最近距离measureDistance1 = workPart->MeasureManager()->NewDistance(NULL, NXOpen::MeasureManager::MeasureType::MeasureTypeMinimum, object1, object2);// 获取值MeasureDistance_Max = measureDistance0->Value();MeasureDistance_Min = measureDistance1->Value();delete measureDistance0, measureDistance1;
}

全部代码：

//NX12_NXOpenCPP_Wizard1// Mandatory UF Includes
#include <uf.h>
#include <uf_object_types.h>// Internal Includes
#include <NXOpen/ListingWindow.hxx>
#include <NXOpen/NXMessageBox.hxx>
#include <NXOpen/UI.hxx>// Internal+External Includes
#include <NXOpen/Annotations.hxx>
#include <NXOpen/Assemblies_Component.hxx>
#include <NXOpen/Assemblies_ComponentAssembly.hxx>
#include <NXOpen/Body.hxx>
#include <NXOpen/BodyCollection.hxx>
#include <NXOpen/Face.hxx>
#include <NXOpen/Line.hxx>
#include <NXOpen/NXException.hxx>
#include <NXOpen/NXObject.hxx>
#include <NXOpen/Part.hxx>
#include <NXOpen/PartCollection.hxx>
#include <NXOpen/Session.hxx>// Std C++ Includes
#include <iostream>
#include <sstream>
#include <uf_defs.h>
#include <NXOpen/NXException.hxx>
#include <NXOpen/Session.hxx>
#include <NXOpen/ModelingView.hxx>
#include <NXOpen/ModelingViewCollection.hxx>
#include <NXOpen/Part.hxx>
#include <NXOpen/PartCollection.hxx>
#include <NXOpen/View.hxx>#include <NXOpen/Session.hxx>
#include <NXOpen/Body.hxx>
#include <NXOpen/BodyCollection.hxx>
#include <NXOpen/Builder.hxx>
#include <NXOpen/DatumAxis.hxx>
#include <NXOpen/DatumCollection.hxx>
#include <NXOpen/Direction.hxx>
#include <NXOpen/DirectionCollection.hxx>
#include <NXOpen/DisplayableObject.hxx>
#include <NXOpen/Expression.hxx>
#include <NXOpen/ExpressionCollection.hxx>
#include <NXOpen/MeasureDistanceBuilder.hxx>
#include <NXOpen/MeasureManager.hxx>
#include <NXOpen/Part.hxx>
#include <NXOpen/PartCollection.hxx>
#include <NXOpen/ScCollector.hxx>
#include <NXOpen/SelectDisplayableObject.hxx>
#include <NXOpen/SelectDisplayableObjectList.hxx>
#include <NXOpen/SelectObject.hxx>
#include <NXOpen/Session.hxx>
#include <NXOpen/SmartObject.hxx>
#include <NXOpen/MeasureDistance.hxx>
#include "uf_ui.h"
#include<NXOpen/NXObjectManager.hxx>
using namespace NXOpen;
using std::string;
using std::exception;
using std::stringstream;
using std::endl;
using std::cout;
using std::cerr;//------------------------------------------------------------------------------
// NXOpen c++ test class 
//------------------------------------------------------------------------------
class MyClass
{// class members
public:static Session *theSession;static UI *theUI;MyClass();~MyClass();void do_it();void print(const NXString &);void print(const string &);void print(const char*);private:BasePart *workPart, *displayPart;NXMessageBox *mb;ListingWindow *lw;LogFile *lf;
};//------------------------------------------------------------------------------
// Initialize static variables
//------------------------------------------------------------------------------
Session *(MyClass::theSession) = NULL;
UI *(MyClass::theUI) = NULL;//------------------------------------------------------------------------------
// Constructor 
//------------------------------------------------------------------------------
MyClass::MyClass()
{// Initialize the NX Open C++ API environmentMyClass::theSession = NXOpen::Session::GetSession();MyClass::theUI = UI::GetUI();mb = theUI->NXMessageBox();lw = theSession->ListingWindow();lf = theSession->LogFile();workPart = theSession->Parts()->BaseWork();displayPart = theSession->Parts()->BaseDisplay();}//------------------------------------------------------------------------------
// Destructor
//------------------------------------------------------------------------------
MyClass::~MyClass()
{
}//------------------------------------------------------------------------------
// Print string to listing window or stdout
//------------------------------------------------------------------------------
void MyClass::print(const NXString &msg)
{if(! lw->IsOpen() ) lw->Open();lw->WriteLine(msg);
}
void MyClass::print(const string &msg)
{if(! lw->IsOpen() ) lw->Open();lw->WriteLine(msg);
}
void MyClass::print(const char * msg)
{if(! lw->IsOpen() ) lw->Open();lw->WriteLine(msg);
}void measureDistance(tag_t objTAG1, tag_t objTAG2, double &MeasureDistance_Max, double &MeasureDistance_Min)
{double retMax = 0.0, retMin = 0.0;NXOpen::Session* theSession = NXOpen::Session::GetSession();NXOpen::Part* workPart(theSession->Parts()->Work());//测量对象1NXOpen::DisplayableObject* object1(dynamic_cast<NXOpen::DisplayableObject*>(NXObjectManager::Get(objTAG1)));//测量对象2NXOpen::DisplayableObject* object2(dynamic_cast<NXOpen::DisplayableObject*>(NXObjectManager::Get(objTAG2)));NXOpen::MeasureDistance* measureDistance0;NXOpen::MeasureDistance* measureDistance1;// 获得最远距离measureDistance0 = workPart->MeasureManager()->NewDistance(NULL, NXOpen::MeasureManager::MeasureType::MeasureTypeMaximum, object1, object2);// 获得最近距离measureDistance1 = workPart->MeasureManager()->NewDistance(NULL, NXOpen::MeasureManager::MeasureType::MeasureTypeMinimum, object1, object2);// 获取值MeasureDistance_Max = measureDistance0->Value();MeasureDistance_Min = measureDistance1->Value();delete measureDistance0, measureDistance1;
}//------------------------------------------------------------------------------
// Do something
//------------------------------------------------------------------------------
void MyClass::do_it()
{// TODO: add your code hereNXOpen::Session *theSession = NXOpen::Session::GetSession();NXOpen::Part *workPart(theSession->Parts()->Work());NXOpen::Part *displayPart(theSession->Parts()->Display());NXOpen::Body *body1(dynamic_cast<NXOpen::Body *>(workPart->Bodies()->FindObject("BLOCK(1)")));tag_t bodyTag1 = body1->Tag();NXOpen::Body *body2(dynamic_cast<NXOpen::Body *>(workPart->Bodies()->FindObject("BLOCK(2)")));tag_t bodyTag2 = body2->Tag();double MeasureDistance_Max = 0.0;double MeasureDistance_Min = 0.0;measureDistance(bodyTag1, bodyTag2, MeasureDistance_Max, MeasureDistance_Min);char msg1[256];sprintf(msg1, "%f", MeasureDistance_Max);char msg2[256];sprintf(msg2, "%f", MeasureDistance_Min);UF_UI_open_listing_window();//打开窗口UF_UI_write_listing_window("两个测量对象最大距离");UF_UI_write_listing_window(msg1);//打印UF_UI_write_listing_window("\n");UF_UI_write_listing_window("两个测量对象最小距离");UF_UI_write_listing_window(msg2);//打印UF_UI_write_listing_window("\n");}//------------------------------------------------------------------------------
// Entry point(s) for unmanaged internal NXOpen C/C++ programs
//------------------------------------------------------------------------------
//  Explicit Execution
extern "C" DllExport void ufusr( char *parm, int *returnCode, int rlen )
{try{// Create NXOpen C++ class instanceMyClass *theMyClass;theMyClass = new MyClass();theMyClass->do_it();delete theMyClass;}catch (const NXException& e1){UI::GetUI()->NXMessageBox()->Show("NXException", NXOpen::NXMessageBox::DialogTypeError, e1.Message());}catch (const exception& e2){UI::GetUI()->NXMessageBox()->Show("Exception", NXOpen::NXMessageBox::DialogTypeError, e2.what());}catch (...){UI::GetUI()->NXMessageBox()->Show("Exception", NXOpen::NXMessageBox::DialogTypeError, "Unknown Exception.");}
}//------------------------------------------------------------------------------
// Unload Handler
//------------------------------------------------------------------------------
extern "C" DllExport int ufusr_ask_unload()
{return (int)NXOpen::Session::LibraryUnloadOptionImmediately;
}

三、显示结果