CycleQueue.h
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#include <iostream>
using namespace std;
#define MAX_LENGTH 100
typedef struct TRACK_POINT
{
int x;
int y;
}TRACK_POINT;
//template <class T>
class cycleQueue
{
private:
unsigned int m_size;
int m_front;
int m_rear;
TRACK_POINT m_data[MAX_LENGTH];
bool firstPush;
bool full_size;
public:
cycleQueue() {}
cycleQueue(unsigned size)
:m_size(size),
m_front(0),
m_rear(0)
{
//m_data = new TRACK_POINT[size];
full_size = false;
firstPush = true;
}
void set_param(unsigned size)
{
m_size = size;
//m_data = new TRACK_POINT[size];
full_size = false;
firstPush = true;
m_front = 0;
m_rear = 0;
}
~cycleQueue()
{
//delete[] m_data;
}
bool isEmpty()
{
return m_front == m_rear;
}
bool isFull()
{
return m_front == (m_rear + 1) % m_size;
}
int getFront()
{
return m_front;
}
int getRear()
{
return m_rear;
}
int size()
{
if (full_size) return m_size;
else if (m_rear == m_front && firstPush == false) return m_size;
else return m_rear - m_front;
}
void push(TRACK_POINT ele)throw(bad_exception)
{
if (m_front == m_rear && firstPush==false)
{
m_front = (m_front + 1) % m_size;
full_size = true;
//cout << "full_size" << endl;
}
m_data[m_rear] = ele;
m_rear = (m_rear + 1) % m_size;
firstPush = false;
}
TRACK_POINT pop() throw(bad_exception)
{
if (isEmpty())
{
throw bad_exception();
}
TRACK_POINT tmp = m_data[m_front];
m_front = (m_front + 1) % m_size;
return tmp;
}
TRACK_POINT& get(int i)
{
//T tmp = m_data[i];
return m_data[i];
}
};