/Users/craigcornelius/Projects/SPRING Mac Release 0.2/space.h

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// $Id: space.h,v 1.11 2001/01/08 19:01:50 kevin Exp $
// $Copyright: (c)2001 National Biocomputation Center, Stanford University $

#ifndef _SPACE_H_
#define _SPACE_H_

#ifdef _WIN32
#else
#include <netinet/in.h>
#endif

#include "socket.h"

typedef union {
  unsigned long l;
  char c[4];
  float f;
} uf_t;

typedef union {
  unsigned short s;
  char c[2];
} us_t;

typedef char space_type;

#define TYPE_QUIT     ((space_type) 0x80)
#define TYPE_VOID     ((space_type) 0x81)
#define TYPE_TRIANGLE ((space_type) 0x82)
#define TYPE_INTERPOL ((space_type) 0x83)

#define SEND_QUIT     ((space_type) 0x00)
#define SEND_COORD    ((space_type) 0x01)

inline long copy_float_to_buf(char *buf, double val)
{
 static uf_t long_tmp;
 static int i;

 long_tmp.f = (float) val;
 long_tmp.l = htonl(long_tmp.l);
 for(i=0; i<4; i++)
  buf[i] = long_tmp.c[i];
 return long_tmp.l;
}

inline void copy_ushort_to_buf(char *buf, unsigned short val)
{
 static us_t short_tmp;
 static int i;

 short_tmp.s = htons(val);
 for(i=0; i<2; i++)
  buf[i] = short_tmp.c[i];
}

inline long receive_float_from_buf(char *buf, double *val)
{
 uf_t long_tmp;
 static int i;

 for(i=0; i<4; i++)
  long_tmp.c[i] = buf[i];
 long_tmp.l = ntohl(long_tmp.l);
 *val = (double) long_tmp.f;
 return long_tmp.l;
}

inline long hashdouble(double val)
{
 uf_t long_tmp;

 long_tmp.f = (float) val;
 return long_tmp.l;
}

inline void receive_ushort_from_buf(char *buf, unsigned short *val)
{
 static us_t short_tmp;
 static int i;

 for(i=0; i<2; i++)
  short_tmp.c[i] = buf[i];
 *val = ntohs(short_tmp.s);
}

inline float receive_long_from_buf(char *buf, long *val)
{
 static uf_t long_tmp;
 static int i;

 for(i=0; i<4; i++)
  long_tmp.c[i] = buf[i];
 *val = ntohl(long_tmp.l);
 return long_tmp.f;
}

class space {

 public :

  virtual Point3D *get_force(Point3D *, Point3D *)=0;

  virtual int istouching()=0;
  
  virtual ~space()
  {
  }

  virtual void print_datas()=0;

  virtual void send_datas(Socket *s)=0;

  virtual void use_new_datas(char *buf, int size)=0;

  virtual void erase_all()=0;

  virtual long gethash()=0;
};

#endif

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