writeshape.cpp

一些简单的c++实习题目

#include "Writeshape.h"
#include <iostream>
#include <fstream>
#define SPACE {while(c_puncture!=':')binfile>>c_puncture; c_puncture='0';}
using namespace std;

int Coutshape::converted(int t)
	{
		int q;
		q=((t>>24)&0xff|(t<<24)|(t>>8)&0xff00|(t<<8)&0xff0000);
		return(q);
	}
void Coutshape::writeshape(char * p_txtaddress,char* p_shpaddress)
{
   fstream binfile,boutfile;
   binfile.open(p_txtaddress,ios::in);
   boutfile.open(p_shpaddress,ios::out|ios::binary);
   int n_value=converted(9994);
   boutfile.write((char*)&n_value,sizeof(int));
   boutfile.seekg(24,ios::beg);
    m_totallength=converted(542);
   boutfile.write((char*)&m_totallength,sizeof(int));
   m_version=1000;
   boutfile.write((char*)&m_version,sizeof(int));
   m_shapetype=3;
   boutfile.write((char*)&m_shapetype,sizeof(int));
   char c_puncture='0';
   SPACE
   binfile>>m_totalrecord;
   SPACE
   for(int i=0;i<4;i++)
   {
       binfile>>m_box[i];
       boutfile.write((char*)&m_box[i],sizeof(double));
   }
   boutfile.seekg(100,ios::beg);
   for (int i=1;i<=m_totalrecord;i++)
   {
	   SPACE
	   SPACE
	   int a=converted(i);
	   boutfile.write((char*)&a,sizeof(int));
	   for(int i=0;i<4;i++)
	   {
		   binfile>>m_box[i];
	   }
	    SPACE
	   binfile>>m_pointnumber;
	   int m=48+16*m_pointnumber;
	    m=converted(m/2);
	   boutfile.write((char*)&m,sizeof(int));
	    boutfile.write((char*)&m_shapetype,sizeof(int));
	   for(int i=0;i<4;i++)
	   {
		   boutfile.write((char*)&m_box[i],sizeof(double));
	   }
	   SPACE
	   m_part=1;
	   boutfile.write((char*)&m_part,sizeof(int));
	   boutfile.write((char*)&m_pointnumber,sizeof(int));
	   m_part--;
	   boutfile.write((char*)&m_part,sizeof(int));
	   for (int i=0;i<m_pointnumber*2;i++)
	   {
		   binfile>>m_point;
		   boutfile.write((char*)&m_point,sizeof(double));
	   }
   }
   boutfile.close();
   binfile.close();
  

   
}