/*

ARIA header files for use with ARNL 1.7.1

Copyright(C) 2004, 2005 ActivMedia Robotics, LLC. 
Copyright(C) 2006, 2007, 2008, 2009 MobileRobots Inc.
All rights reserved.

This copy of Aria was relicensed for use with Arnl and the Arnl
license by MobileRobots Inc.  If you wish to download a seperate
distribution of Aria licensed under the GPL or a commercial license go to
http://www.mobilerobots.com/SOFTWARE/aria.html or contact MobileRobots
Inc, at robots@mobilerobots.com or MobileRobots Inc,
10 Columbia Drive, Amherst, NH 03031; 800-639-9481

MobileRobots Inc hereby grants to other individuals or
organizations permission to use this software with Arnl and in
compliance with the Arnl license.  This software may not be
distributed to others except by MobileRobots Inc.

MobileRobots Inc does not make any representations about the
suitability of this software for any purpose.  It is provided "as is"
without express or implied warranty.

*/

#ifndef ARIAUTIL_H
#define ARIAUTIL_H

#define _GNU_SOURCE 1
#include <string>
// #define _XOPEN_SOURCE 500
#include <list>
#include <math.h>
#include <stdarg.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <float.h>

#if defined(_WIN32) || defined(WIN32)
#include <sys/timeb.h>
#include <sys/stat.h>
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <unistd.h>
#include <strings.h>
#endif // ifndef win32

#include <time.h>
#include "ariaTypedefs.h"
#include "ArLog.h"
#include "ArFunctor.h"
#include "ArArgumentParser.h"
//#include "ariaInternal.h"
#include "ariaOSDef.h"

class ArLaser;
class ArDeviceConnection;

#ifndef M_PI
#define M_PI 3.1415927
#endif // of M_PI, windows has a function call instead of a define

/// This class has utility functions
class ArUtil
{
public:
  /// Values for the bits from 0 to 16
  enum BITS { 
    BIT0 = 0x1, ///< value of BIT0
    BIT1 = 0x2, ///< value of BIT1
    BIT2 = 0x4, ///< value of BIT2
    BIT3 = 0x8, ///< value of BIT3
    BIT4 = 0x10, ///< value of BIT4
    BIT5 = 0x20, ///< value of BIT5
    BIT6 = 0x40, ///< value of BIT6
    BIT7 = 0x80, ///< value of BIT7
    BIT8 = 0x100, ///< value of BIT8
    BIT9 = 0x200, ///< value of BIT9
    BIT10 = 0x400, ///< value of BIT10
    BIT11 = 0x800, ///< value of BIT11
    BIT12 = 0x1000, ///< value of BIT12
    BIT13 = 0x2000, ///< value of BIT13
    BIT14 = 0x4000, ///< value of BIT14
    BIT15 = 0x8000, ///< value of BIT15
  };

#ifdef WIN32
  typedef int mode_t;
#endif

  /// Sleep for the given number of milliseconds
  AREXPORT static void sleep(unsigned int ms);
  
  /// Get the time in milliseconds
  AREXPORT static unsigned int getTime(void);

  /// Delete all members of a set. Does NOT empty the set.
  /** 
      Assumes that T is an iterator that supports the operator*, operator!=
      and operator++. The return is assumed to be a pointer to a class that
      needs to be deleted.
  */
  template<class T> static void deleteSet(T begin, T end)
    {
      for (; begin != end; ++begin)
      {
	delete (*begin);
      }
    }

  /// Delete all members of a set. Does NOT empty the set.
  /**
     Assumes that T is an iterator that supports the operator**, operator!=
     and operator++. The return is assumed to be a pair. The second value of
     the pair is assumed to be a pointer to a class that needs to be deleted.
  */
  template<class T> static void deleteSetPairs(T begin, T end)
    {
      for (; begin != end; ++begin)
      {
	delete (*begin).second;
      }
    }

  /// Returns the minimum of the two values
  static int findMin(int first, int second) 
    { if (first < second) return first; else return second; }
  /// Returns the maximum of the two values
  static int findMax(int first, int second) 
    { if (first > second) return first; else return second; }

  /// Returns the minimum of the two values
  static double findMin(double first, double second) 
    { if (first < second) return first; else return second; }
  /// Returns the maximum of the two values
  static double findMax(double first, double second) 
    { if (first > second) return first; else return second; }

  /// OS-independent way of finding the size of a file.
  AREXPORT static long sizeFile(const char *fileName);

  /// OS-independent way of finding the size of a file.
  AREXPORT static long sizeFile(std::string fileName);

  /// OS-independent way of checking to see if a file exists and is readable.
  AREXPORT static bool findFile(const char *fileName);

  // OS-independent way of stripping the directory from the fileName.
  // commented out with std::string changes since this didn't seem worth fixing right now
  //AREXPORT static bool stripDir(std::string fileIn, std::string &fileOut);

  // OS-independent way of stripping the fileName from the directory.
  // commented out with std::string changes since this didn't seem worth fixing right now
  //AREXPORT static bool stripFile(std::string fileIn, std::string &fileOut);

  /// Appends a slash to a path if there is not one there already
  AREXPORT static void appendSlash(char *path, size_t pathLength);
  
  /// Appends a slash to the given string path if necessary.
  AREXPORT static void appendSlash(std::string &path);

  /// Fix the slash orientation in file path string for windows or linux
  AREXPORT static void fixSlashes(char *path, size_t pathLength);
  
  /// Fixes the slash orientation in the given file path string for the current platform
  AREXPORT static void fixSlashes(std::string &path); 

  /// Fix the slash orientation in file path string to be all forward
  AREXPORT static void fixSlashesForward(char *path, size_t pathLength);

  /// Fix the slash orientation in file path string to be all backward
  AREXPORT static void fixSlashesBackward(char *path, size_t pathLength);

  /// Adds two directories, taking care of all slash issues
  AREXPORT static void addDirectories(char *dest, size_t destLength,
				      const char *baseDir, 
				      const char *insideDir);




  /// Finds out if two strings are equal
  AREXPORT static int strcmp(std::string str, std::string str2);

  /// Finds out if two strings are equal
  AREXPORT static int strcmp(std::string str, const char *str2);

  /// Finds out if two strings are equal
  AREXPORT static int strcmp(const char *str, std::string str2);

  /// Finds out if two strings are equal
  AREXPORT static int strcmp(const char *str, const char *str2);

  /// Finds out if two strings are equal (ignoring case)
  AREXPORT static int strcasecmp(std::string str, std::string str2);

  /// Finds out if two strings are equal (ignoring case)
  AREXPORT static int strcasecmp(std::string str, const char *str2);

  /// Finds out if two strings are equal (ignoring case)
  AREXPORT static int strcasecmp(const char *str, std::string str2);

  /// Finds out if two strings are equal (ignoring case)
  AREXPORT static int strcasecmp(const char *str, const char *str2);


  /// Compares two strings (ignoring case and surrounding quotes)
  /**
   * This helper method is primarily used to ignore surrounding quotes 
   * when comparing ArArgumentBuilder args.
   * @return int set to 0 if the two strings are equivalent, a negative 
   * number if str1 is "less than" str2, and a postive number if it is
   * "greater than".
  **/
  AREXPORT static int strcasequotecmp(const std::string &str1, 
                                      const std::string &str2);


  /// Puts a \ before spaces in src, puts it into dest
  AREXPORT static void escapeSpaces(char *dest, const char *src, 
				    size_t maxLen);

  /// Strips out the quotes in the src buffer into the dest buffer
  AREXPORT static bool stripQuotes(char *dest, const char *src,size_t destLen);

  /// Lowers a string from src into dest, make sure there's enough space
  AREXPORT static void lower(char *dest, const char *src, 
			     size_t maxLen);
  /// Returns true if this string is only alphanumeric, false otherwise
  AREXPORT static bool isOnlyAlphaNumeric(const char *str);

  /// Returns true if the given string is null or of zero length, false otherwise
  AREXPORT static bool isStrEmpty(const char *str);

  /// Does an atof but if its inf or -inf deals with it fine 
  AREXPORT static double atof(const char *nptr);

  /// Converts an integer value into a string for true or false
  AREXPORT static const char *convertBool(int val);

#ifndef SWIG
  /// Function for doing a printf style call to a functor
  /** @swigomit */
  AREXPORT static void functorPrintf(ArFunctor1<const char *> *functor,
				     char *str, ...);
#endif

  /// Function for doing a fprintf to a file (here to make a functor for)
  AREXPORT static void writeToFile(const char *str, FILE *file);

  /// Gets a string contained in an arbitrary file
  AREXPORT static bool getStringFromFile(const char *fileName, 
					 char *str, size_t strLen);
  /** 
  These are for passing into getStringFromRegistry
  **/
  enum REGKEY {
    REGKEY_CLASSES_ROOT, ///< use HKEY_CLASSES_ROOT
    REGKEY_CURRENT_CONFIG, ///< use HKEY_CURRENT_CONFIG
    REGKEY_CURRENT_USER, ///< use HKEY_CURRENT_USER
    REGKEY_LOCAL_MACHINE, ///< use HKEY_LOCAL_MACHIE
    REGKEY_USERS ///< use HKEY_USERS
  };

  /// Returns a string from the Windows registry
  AREXPORT static bool getStringFromRegistry(REGKEY root,
					     const char *key,
					     const char *value,
					     char *str,
					     int len);

  /// Returns a string from the Windows registry, searching each of the following registry root paths in order: REGKEY_CURRENT_USER, REGKEY_LOCAL_MACHINE
  AREXPORT static bool findFirstStringInRegistry(const char* key, const char* value, char* str, int len) {
	if(!getStringFromRegistry(REGKEY_CURRENT_USER, key, value, str, len))
		return getStringFromRegistry(REGKEY_LOCAL_MACHINE, key, value, str, len);
	return true;
  }

  AREXPORT static const char *COM1; ///< First serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM2; ///< Second serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM3; ///< Third serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM4; ///< Fourth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM5; ///< Fifth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM6; ///< Sixth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM7; ///< Seventh serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM8; ///< Eighth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM9; ///< Ninth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM10; ///< Tenth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM11; ///< Eleventh serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM12; ///< Twelth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM13; ///< Thirteenth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM14; ///< Fourteenth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM15; ///< Fifteenth serial port device name (value depends on compilation platform)
  AREXPORT static const char *COM16; ///< Sixteenth serial port device name (value depends on compilation platform)

  AREXPORT static const char *TRUESTRING; ///< "true"
  AREXPORT static const char *FALSESTRING; ///< "false"

  /** Put the current year (GMT) in s (e.g. "2005"). 
   *  @param s String buffer (allocated) to write year into
   *  @param len Size of @a s
   */
  AREXPORT static void putCurrentYearInString(char* s, size_t len);
  /** Put the current month (GMT) in s (e.g. "09" if September). 
   *  @param s String buffer (allocated) to write month into
   *  @param len Size of @a s
   */
  AREXPORT static void putCurrentMonthInString(char* s, size_t len);
  /** Put the current day (GMT) of the month in s (e.g. "20"). 
   *  @param s String buffer (allocated) to write day into
   *  @param len Size of @a s
   */
  AREXPORT static void putCurrentDayInString(char* s, size_t len);
  /** Put the current hour (GMT) in s (e.g. "13" for 1 o'clock PM). 
   *  @param s String buffer (allocated) to write hour into
   *  @param len Size of @a s
   */
  AREXPORT static void putCurrentHourInString(char* s, size_t len);
  /** Put the current minute (GMT) in s (e.g. "05"). 
   *  @param s String buffer (allocated) to write minutes into
   *  @param len Size of @a s
   */
  AREXPORT static void putCurrentMinuteInString(char* s, size_t len);
  /** Put the current second (GMT) in s (e.g. "59"). 
   *  @param s String buffer (allocated) to write seconds into
   *  @param len Size of @a s
   */
  AREXPORT static void putCurrentSecondInString(char* s, size_t len);

  /** Interface to native platform localtime() function.
   *  On Linux, this is equivalent to a call to localtime_r(@a timep, @a result) (which is threadsafe, including the returned pointer, since it uses a different time struct for each thread)
   *  On Windows, this is equivalent to a call to localtime(@a timep, @a result). In addition, a static mutex is used to make it threadsafe.
   *
   *  @param timep Pointer to current time (Unix time_t; seconds since epoch) 
   *  @param result The result of calling platform localtime function is copied into this struct, so it must have been allocated.
   *  @return false on error (e.g. invalid input), otherwise true.
   *
   *  Example:
   *  @code
   *  struct tm t;
   *  ArUtil::localtime(time(NULL), &t);
   *  ArLog::log("Current month is %d.\n", t.tm_mon);
   *  @endcode
   */
  AREXPORT static bool localtime(const time_t *timep, struct tm *result);

   
  /** Call ArUtil::localtime(const time_t*, struct tm *) with the current time obtained by calling
   * time(NULL).
   *  @return false on error (e.g. invalid input), otherwise true.
   */
  AREXPORT static bool localtime(struct tm *result);

  // these aren't needed in windows since it ignores case anyhow
#ifndef WIN32
  /// this matches the case out of what file we want
  AREXPORT static bool matchCase(const char *baseDir, const char *fileName, 
			   char * result, size_t resultLen);
#endif 
  /// Pulls the directory out of a file name
  AREXPORT static bool getDirectory(const char *fileName, 
				     char * result, size_t resultLen);
  /// Pulls the filename out of the file name
  AREXPORT static bool getFileName(const char *fileName, 
				     char * result, size_t resultLen);
  
  /// Sets the timestamp on the specified file
  AREXPORT static bool changeFileTimestamp(const char *fileName, 
                                           time_t timestamp);

  /// Opens a file, defaulting it so that the file will close on exec
  AREXPORT static FILE *fopen(const char *path, const char *mode, 
			      bool closeOnExec = true);
  /// Opens a file, defaulting it so that the file will close on exec
  AREXPORT static int open(const char *pathname, int flags, 
			   bool closeOnExec = true);
  /// Opens a file, defaulting it so that the file will close on exec
  AREXPORT static int open(const char *pathname, int flags, mode_t mode, 
			   bool closeOnExec = true);
  /// Opens a file, defaulting it so that the file will close on exec
  AREXPORT static int creat(const char *pathname, mode_t mode,
			    bool closeOnExec = true);
  /// Opens a pipe, defaulting it so that the file will close on exec
  AREXPORT static FILE *popen(const char *command, const char *type, 
			      bool closeOnExec = true);


  /// Sets if the file descriptor will be closed on exec or not
  AREXPORT static void setFileCloseOnExec(int fd, bool closeOnExec = true);
  /// Sets if the file descriptor will be closed on exec or not
  AREXPORT static void setFileCloseOnExec(FILE *file, bool closeOnExec = true);

  /** Return true if the value of @a f is not NaN and is not infinite (+/- INF) */
  AREXPORT static bool floatIsNormal(double f);

protected:
//#ifndef WIN32
  /// this splits up a file name (it isn't exported since it'd crash with dlls)
  static std::list<std::string> splitFileName(const char *fileName);
//#endif

private:

  /// The character used as a file separator on the current platform (i.e. Linux or Windows)
  static const char SEPARATOR_CHAR;
  /// The character used as a file separator on the current platform, in a string format
  static const char *SEPARATOR_STRING;
  /// The character used as a file separator on the other platforms (i.e. slash in opposite direction)
  static const char OTHER_SEPARATOR_CHAR;

#ifdef WIN32
  // Used on Windows to make ArUtil::localtime() function threadsafe
  static ArMutex ourLocaltimeMutex;
#endif
};

///  This class has static members to do common math operations.
class ArMath
{
private:
  /* see ArMath::epsilon() */
  static const double ourEpsilon; 

  // see getRandMax())
  static const long ourRandMax;

public:
   
  /** @return a very small number which can be used for comparisons of floating 
   * point values, etc. */
  AREXPORT static double epsilon();


  /// This adds two angles together and fixes the result to [-180, 180] 
  /**
     @param ang1 first angle
     @param ang2 second angle, added to first
     @return sum of the angles, in range [-180,180]
     @see subAngle
     @see fixAngle */
  static double addAngle(double ang1, double ang2) 
    { return fixAngle(ang1 + ang2); }

  /// This subtracts one angle from another and fixes the result to [-180,180]
  /**
     @param ang1 first angle
     @param ang2 second angle, subtracted from first angle
     @return resulting angle, in range [-180,180]
     @see addAngle
     @see fixAngle
  */
  static double subAngle(double ang1, double ang2) 
    { return fixAngle(ang1 - ang2); }

  /// Takes an angle and returns the angle in range (-180,180]
  /**
     @param angle the angle to fix
     @return the angle in range (-180,180]
     @see addAngle
     @see subAngle
  */
  static double fixAngle(double angle) 
    {
      if (angle >= 360)
	angle = angle - 360.0 * (double)((int)angle / 360);
      if (angle < -360)
	angle = angle + 360.0 * (double)((int)angle / -360);
      if (angle <= -180)
	angle = + 180.0 + (angle + 180.0);
      if (angle > 180)
	angle = - 180.0 + (angle - 180.0);
      return angle;
    } 
  
  /// Converts an angle in degrees to an angle in radians
  /**
     @param deg the angle in degrees
     @return the angle in radians
     @see radToDeg
  */     
  static double degToRad(double deg) { return deg * M_PI / 180.0; }

  /// Converts an angle in radians to an angle in degrees
  /**
     @param rad the angle in radians
     @return the angle in degrees
     @see degToRad
  */
  static double radToDeg(double rad) { return rad * 180.0 / M_PI; }

  /// Finds the cos, from angles in degrees
  /**
     @param angle angle to find the cos of, in degrees
     @return the cos of the angle
     @see sin
  */
  static double cos(double angle) { return ::cos(ArMath::degToRad(angle)); }

  /// Finds the sin, from angles in degrees
  /**
     @param angle angle to find the sin of, in degrees
     @return the sin of the angle
     @see cos
  */
  static double sin(double angle) { return ::sin(ArMath::degToRad(angle)); }

  /// Finds the tan, from angles in degrees
  /**
     @param angle angle to find the tan of, in degrees
     @return the tan of the angle
  */
  static double tan(double angle) { return ::tan(ArMath::degToRad(angle)); }

  /// Finds the arctan of the given y/x pair
  /**
     @param y the y distance
     @param x the x distance
     @return the angle y and x form
  */
  static double atan2(double y, double x) 
    { return ArMath::radToDeg(::atan2(y, x)); }

  /// Finds if one angle is between two other angles
  static bool angleBetween(double angle, double startAngle, double endAngle)
    {
      angle = fixAngle(angle);
      startAngle = fixAngle(startAngle);
      endAngle = fixAngle(endAngle);
      if ((startAngle < endAngle && angle > startAngle && angle < endAngle) ||
	  (startAngle > endAngle && (angle > startAngle || angle < endAngle)))
	return true;
      else
	return false;
    }

  /// Finds the absolute value of a double
  /**
     @param val the number to find the absolute value of
     @return the absolute value of the number
  */
  static double fabs(double val) 
    {
      if (val < 0.0)
	return -val;
      else
	return val;
    }

  /// Finds the closest integer to double given
  /**
     @param val the double to find the nearest integer to
     @return the integer the value is nearest to (also caps it within 
     int bounds)
  */
  static int roundInt(double val) 
    { 
      val += .49;
      if (val > INT_MAX)
	return (int) INT_MAX;
      else if (val < INT_MIN)
	return (int) INT_MIN;
      else
	return((int) floor(val)); 
    }
    
  /// Finds the closest short to double given
  /**
     @param val the double to find the nearest short to
     @return the integer the value is nearest to (also caps it within 
     short bounds)
  */
  static short roundShort(double val) 
    { 
      val += .49;
      if (val > 32767)
	return (short) 32767;
      else if (val < -32768)
	return (short) -32768;
      else
	return((short) floor(val)); 
    }
    

  /// Rotates a point around 0 by degrees given
  static void pointRotate(double *x, double *y, double th)
    {
      double cs, sn, xt, yt;
      cs = cos(th);
      sn = sin(th);
      xt = *x;  
      yt = *y;
      *x = cs*xt + sn*yt;
      *y = cs*yt - sn*xt;
    }
  
  /** Returns a random number between 0 and RAND_MAX on Windows, 2^31 on Linux
   * (see ArUtil::getRandMax()). On Windows, rand() is used, on Linux, lrand48(). */
  static long random(void)
    {
#ifdef WIN32
      return(rand());
#else
      return(lrand48());
#endif
    }
  
  /// Maximum of value returned by random()
  AREXPORT static long getRandMax();

  /** Returns a random number between @a m and @a n. On Windows, rand() is used,
   * on Linux lrand48(). */
  AREXPORT static long randomInRange(long m, long n);

  /// Finds the distance between two coordinates
  /**
     @param x1 the first coords x position
     @param y1 the first coords y position
     @param x2 the second coords x position
     @param y2 the second coords y position
     @return the distance between (x1, y1) and (x2, y2)
  **/
  static double distanceBetween(double x1, double y1, double x2, double y2)
    { return sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));  }

  /// Finds the squared distance between two coordinates
  /**
     use this only where speed really matters
     @param x1 the first coords x position
     @param y1 the first coords y position
     @param x2 the second coords x position
     @param y2 the second coords y position
     @return the distance between (x1, y1) and (x2, y2)
  **/
  static double squaredDistanceBetween(double x1, double y1, double x2, double y2)
    { return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);  }

  /** Base-2 logarithm */
  static double log2(double x)
  {
    return log10(x) / 0.3010303;  // 0.301... is log10(2.0).
  }
};

/// The class which represents an x/y position along with a heading.
/** 
    This class represents a robot position with heading.  The heading is 
    automatically adjusted to be in the range -180 to 180.  It also defaults
    to 0, and so does not need to be used. (This avoids having 2 types of 
    positions.)  Everything in the class is inline so it should be fast.
*/
class ArPose
{
public:


  /// Constructor, with optional initial values
  /** 
      Sets the pose to the given values.  The constructor can be called with no 
      parameters, with just x and y, or with x, y, and th.  The given heading (th)
      is automatically adjusted to be in the range -180 to 180.

      @param x the double to set the x position to, default of 0
      @param y the double to set the y position to, default of 0
      @param th the double value for the pose's heading (or th), default of 0
  */
  ArPose(double x = 0, double y = 0, double th = 0) :
    myX(x),
    myY(y),
    myTh(ArMath::fixAngle(th))
  {}
    
  /// Copy Constructor
  ArPose(const ArPose &pose) : 
    myX(pose.myX), myY(pose.myY), myTh(pose.myTh) {}

  /// Destructor
  virtual ~ArPose() {}
  /// Sets the position to the given values
  /** 
      Sets the position with the given three values, but the theta does not
      need to be given as it defaults to 0.
      @param x the position to set the x position to
      @param y the position to set the y position to
      @param th the position to set the th position to, default of 0
  */
  virtual void setPose(double x, double y, double th = 0) 
    { setX(x); setY(y); setTh(th); }
  /// Sets the position equal to the given position
  /** @param position the position value this instance should be set to */
  virtual void setPose(ArPose position)
    {
      setX(position.getX());
      setY(position.getY());
      setTh(position.getTh());
    }
  /// Sets the x position
  void setX(double x) { myX = x; }
  /// Sets the y position
  void setY(double y) { myY = y; }
  /// Sets the heading
  void setTh(double th) { myTh = ArMath::fixAngle(th); }
  /// Sets the heading, using radians
  void setThRad(double th) { myTh = ArMath::fixAngle(ArMath::radToDeg(th)); }
  /// Gets the x position
  double getX(void) const { return myX; }
  /// Gets the y position
  double getY(void) const { return myY; }
  /// Gets the heading
  double getTh(void) const { return myTh; }
  /// Gets the heading, in radians
  double getThRad(void) const { return ArMath::degToRad(myTh); }
  /// Gets the whole position in one function call
  /**
     Gets the whole position at once, by giving it 2 or 3 pointers to 
     doubles.  If you give the function a null pointer for a value it won't
     try to use the null pointer, so you can pass in a NULL if you don't 
     care about that value.  Also note that th defaults to NULL so you can 
     use this with just x and y.
     @param x a pointer to a double to set the x position to
     @param y a pointer to a double to set the y position to
     @param th a pointer to a double to set the heading to, defaults to NULL
   */
  void getPose(double *x, double *y, double *th = NULL) const
    { 
      if (x != NULL) 
	      *x = myX;
      if (y != NULL) 
	      *y = myY; 
      if (th != NULL) 
	      *th = myTh; 
    }
  /// Finds the distance from this position to the given position
  /**
     @param position the position to find the distance to
     @return the distance to the position from this instance
  */
  virtual double findDistanceTo(ArPose position) const
    {
      return ArMath::distanceBetween(getX(), getY(), 
				     position.getX(), 
				     position.getY());
    }

  /// Finds the square distance from this position to the given position
  /**
     This is only here for speed, if you aren't doing this thousands
     of times a second don't use this one use findDistanceTo

     @param position the position to find the distance to
     @return the distance to the position from this instance 
  **/
  virtual double squaredFindDistanceTo(ArPose position) const
    {
      return ArMath::squaredDistanceBetween(getX(), getY(), 
					    position.getX(), 
					    position.getY());
    }
  /// Finds the angle between this position and the given position
  /** 
      @param position the position to find the angle to
      @return the angle to the given position from this instance, in degrees
  */
  virtual double findAngleTo(ArPose position) const
    {
      return ArMath::radToDeg(atan2(position.getY() - getY(),
				                            position.getX() - getX()));
    }
  /// Logs the coordinates using ArLog
  virtual void log(void) const
    { ArLog::log(ArLog::Terse, "%.0f %.0f %.1f", myX, myY, myTh); }

  /// Add the other pose's X, Y and theta to this pose's X, Y, and theta (sum in theta will be normalized to (-180,180)), and return the result
  virtual ArPose operator+(const ArPose& other) const
  {
    return ArPose( myX + other.getX(), 
                   myY + other.getY(), 
                   ArMath::fixAngle(myTh + other.getTh()) );
  }

  /// Substract the other pose's X, Y, and theta from this pose's X, Y, and theta (difference in theta will be normalized to (-180,180)), and return the result

  virtual ArPose operator-(const ArPose& other) const
  {
    return ArPose( myX - other.getX(), 
                   myY - other.getY(), 
                   ArMath::fixAngle(myTh - other.getTh()) );
  }
  
  /** Adds the given pose to this one.
   *  @swigomit
   */
	ArPose & operator+= ( const ArPose & other)
  {
    myX += other.myX;
    myY += other.myY;
    ArMath::fixAngle(myTh + other.myTh);
    return *this;
  }

	/** Subtracts the given pose from this one.
     *  @swigomit
     */
	ArPose & operator-= ( const ArPose & other)
  {
    myX -= other.myX;
    myY -= other.myY;
    ArMath::fixAngle(myTh - other.myTh);
    return *this;
  }

  /// Equality operator (for sets)
  virtual bool operator==(const ArPose& other) const
  {
    return ((fabs(myX - other.myX) < ArMath::epsilon()) &&
            (fabs(myY - other.myY) < ArMath::epsilon()) &&
            (fabs(myTh - other.myTh) < ArMath::epsilon()));
  }

  virtual bool operator!=(const ArPose& other) const
  {
    return ((fabs(myX - other.myX) > ArMath::epsilon()) ||
            (fabs(myY - other.myY) > ArMath::epsilon()) ||
            (fabs(myTh - other.myTh) > ArMath::epsilon()));
  }

  /// Less than operator (for sets)
  virtual bool operator<(const ArPose& other) const
  {

    if (fabs(myX - other.myX) > ArMath::epsilon()) {
      return myX < other.myX;
    }
    else if (fabs(myY - other.myY) > ArMath::epsilon()) {
      return myY < other.myY;  
    }
    else if (fabs(myTh - other.myTh) > ArMath::epsilon()) {
      return myTh < other.myTh;
    }
    // Otherwise... x, y, and th are equal
    return false;

 } // end operator <


protected:

  double myX;
  double myY;
  double myTh;
};


/// A class for time readings and measuring durations
/** 
    This class is for timing durations or time between events.
    The time values it stores are relative to an abritrary starting time; it
    does not correspond to "real world" or "wall clock" time in any way,
    so DON'T use this for keeping track of what time it is, 
    just for timestamps and relative timing (e.g. "this loop needs to sleep another 100 ms").

    The recommended methods to use are setToNow() to reset the time,
    mSecSince() to obtain the number of miliseconds elapsed since it was
    last reset (or secSince() if you don't need milisecond precision), and
    mSecSince(ArTime) or secSince(ArTime) to find the difference between 
    two ArTime objects.

    On systems where it is supported this will use a monotonic clock,
    this is an ever increasing system that is not dependent on what
    the time of day is set to.  Normally for linux gettimeofday is
    used, but if the time is changed forwards or backwards then bad
    things can happen.  Windows uses a time since bootup, which
    functions the same as the monotonic clock anyways.  You can use
    ArTime::usingMonotonicClock() to see if this is being used.  Note
    that an ArTime will have had to have been set to for this to be a
    good value... Aria::init does this however, so that should not be
    an issue.  It looks like the monotonic clocks won't work on linux
    kernels before 2.6.
*/

class ArTime
{
public:
  /// Constructor. Time is initialized to the current time.
  ArTime() { setToNow(); }
  /// Destructor
  ~ArTime() {}
  
  /// Gets the number of milliseconds since the given timestamp to this one
  long mSecSince(ArTime since) const 
    {
      long timeSince, timeThis;

      timeSince = since.getSec() * 1000 + since.getMSec();
      timeThis = mySec * 1000 + myMSec;
      return timeSince - timeThis;
    }
  /// Gets the number of seconds since the given timestamp to this one
  long secSince(ArTime since) const
    {
      return mSecSince(since)/1000;
    }
  /// Finds the number of millisecs from when this timestamp is set to to now (the inverse of mSecSince())
  long mSecTo(void) const
    {
      ArTime now;
      now.setToNow();
      return -mSecSince(now);
    }
  /// Finds the number of seconds from when this timestamp is set to to now (the inverse of secSince())
  long secTo(void) const
    {
      return mSecTo()/1000;
    }
  /// Finds the number of milliseconds from this timestamp to now
  long mSecSince(void) const
    {
      ArTime now;
      now.setToNow();
      return mSecSince(now);
    }
  /// Finds the number of seconds from when this timestamp was set to now
  long secSince(void) const
    {
      return mSecSince()/1000;
    }
  /// returns whether the given time is before this one or not
  bool isBefore(ArTime testTime) const
    {
      if (mSecSince(testTime) < 0)
	return true;
      else
	return false;
    }
  /// returns whether the given time is equal to this time or not
  bool isAt(ArTime testTime) const
    {
      if (mSecSince(testTime) == 0)
	return true;
      else
	return false;
    }
  /// returns whether the given time is after this one or not
  bool isAfter(ArTime testTime) const
    {
      if (mSecSince(testTime) > 0)
	return true;
      else
	return false;
    }
  /// Resets the time
  AREXPORT void setToNow(void);
  /// Add some milliseconds (can be negative) to this time
  void addMSec(long ms)
    {
      unsigned long timeThis;
      timeThis = mySec * 1000 + myMSec;
      if (ms < 0 && (unsigned)abs(ms) > timeThis)
      {
	ArLog::log(ArLog::Terse, "ArTime::addMsec: tried to subtract too many milliseconds, would result in a negative time.");
	mySec = 0;
	myMSec = 0;
      }
      else 
      {
	timeThis += ms;
	mySec = timeThis / 1000;
	myMSec = timeThis % 1000;
      }
    }
  /// Sets the seconds value (since the arbitrary starting time)
  void setSec(time_t sec) { mySec = sec; }
  /// Sets the milliseconds value (occuring after the seconds value)
  void setMSec(time_t msec) { myMSec = msec; }
  /// Gets the seconds value (since the arbitrary starting time)
  time_t getSec(void) const { return mySec; }
  /// Gets the milliseconds value (occuring after the seconds value)
  time_t getMSec(void) const { return myMSec; }
  /// Logs the time
  void log(void) const
    { ArLog::log(ArLog::Terse, "Time: %ld.%ld", getSec(), getMSec()); }
  /// Gets if we're using a monotonic (ever increasing) clock
  static bool usingMonotonicClock()
    {
#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
      return ourMonotonicClock;
#endif
#ifdef WIN32
      return true;
#endif
      return false;
    }
protected:
  time_t mySec;
  time_t myMSec;
#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
  static bool ourMonotonicClock;
#endif 
};

/// A subclass of pose that also has the time the pose was taken
/**

 */
class ArPoseWithTime : public ArPose
{
public:
  ArPoseWithTime(double x = 0, double y = 0, double th = 0,
	 ArTime thisTime = ArTime()) : ArPose(x, y, th)
    { myTime = thisTime; }
  /// Copy Constructor
  ArPoseWithTime(const ArPose &pose) : ArPose(pose) {}
  virtual ~ArPoseWithTime() {}
  void setTime(ArTime newTime) { myTime = newTime; }
  void setTimeToNow(void) { myTime.setToNow(); }
  ArTime getTime(void) const { return myTime; }
protected:
  ArTime myTime;
};

/// A class for keeping track of if a complete revolution has been attained
/**
   This class can be used to keep track of if a complete revolution has been
   done, it is used by doing doing a clearQuadrants when you want to stat
   the revolution.  Then at each point doing an updateQuadrant with the current
   heading of the robot.  When didAllQuadrants returns true, then all the 
   quadrants have been done.
*/
class ArSectors
{
public:
  /// Constructor
  ArSectors(int numSectors = 8) 
    { 
      mySectorSize = 360/numSectors;
      mySectors = new int[numSectors]; 
      myNumSectors = numSectors; 
      clear();
    }
  /// Destructor
  virtual ~ArSectors() { delete mySectors; }
  /// Clears all quadrants
  void clear(void) 
    {
      int i;
      for (i = 0; i < myNumSectors; i++)
	mySectors[i] = false;
    }
  /// Updates the appropriate quadrant for the given angle
  void update(double angle)
    {
      int angleInt;
      angleInt = ArMath::roundInt(ArMath::fixAngle(angle) + 180);
      mySectors[angleInt / mySectorSize] = true;
    }
  /// Returns true if the all of the quadrants have been gone through
  bool didAll(void) const
    {
      int i;
      for (i = 0; i < myNumSectors; i++)
	if (mySectors[i] == false)
	  return false;
      return true;
    }
protected:
  int *mySectors;
  int myNumSectors;
  int mySectorSize;
};




/// Represents geometry of a line in two-dimensional space.
/**
   Note this the theoretical line, i.e. it goes infinitely. 
   For a line segment with endpoints, use ArLineSegment.
   @sa ArLineSegment
**/
class ArLine
{
public:
  ///// Empty constructor
  ArLine() {}
  /// Constructor with parameters
  ArLine(double a, double b, double c) { newParameters(a, b, c); }
  /// Constructor with endpoints
  ArLine(double x1, double y1, double x2, double y2) 
  { newParametersFromEndpoints(x1, y1, x2, y2); }
  /// Destructor
  virtual ~ArLine() {}
  /// Sets the line parameters (make it not a segment)
  void newParameters(double a, double b, double c) 
    { myA = a; myB = b; myC = c; }
  /// Sets the line parameters from endpoints, but makes it not a segment
  void newParametersFromEndpoints(double x1, double y1, double x2, double y2)
    { myA = y1 - y2; myB = x2 - x1; myC = (y2 *x1) - (x2 * y1); }
  /// Gets the A line parameter
  double getA(void) const { return myA; }
  /// Gets the B line parameter
  double getB(void) const { return myB; }
  /// Gets the C line parameter
  double getC(void) const { return myC; }
  /// finds the intersection of this line with another line
  /** 
      @param line the line to check if it intersects with this line
      @param pose if the lines intersect, the pose is set to the location
      @return true if they intersect, false if they do not 
  **/
  bool intersects(const ArLine *line, ArPose *pose) const
    {
      double x, y;
      double n;
      n = (line->getB() * getA()) - (line->getA() * getB());
      // if this is 0 the lines are parallel
      if (fabs(n) < .0000000000001)
      {
	return false;
      }
      // they weren't parallel so see where the intersection is
      x = ((line->getC() * getB()) - (line->getB() * getC())) / n;
      y = ((getC() * line->getA()) - (getA() * line->getC())) / n;
      pose->setPose(x, y);
      return true;
    }
  /// Makes the given line perpendicular to this one through the given pose
  void makeLinePerp(const ArPose *pose, ArLine *line) const
    {
      line->newParameters(getB(), -getA(), 
			  (getA() * pose->getY()) - (getB() * pose->getX()));
    }
   /// Calculate the distance from the given point to (its projection on) this line segment
  /**
     @param pose the the pose to find the perp point of

     @return if the pose does not intersect line it will return < 0
     if the pose intersects the segment it will return the distance to
     the intersection
  **/
  virtual double getPerpDist(const ArPose pose) const
    {
      ArPose perpPose;
      ArLine perpLine;
      makeLinePerp(&pose, &perpLine);
      if (!intersects(&perpLine, &perpPose))
	return -1;
      return (perpPose.findDistanceTo(pose));
    }
   /// Calculate the squared distance from the given point to (its projection on) this line segment
  /**
     @param pose the the pose to find the perp point of

     @return if the pose does not intersect line it will return < 0
     if the pose intersects the segment it will return the distance to
     the intersection
  **/
  virtual double getPerpSquaredDist(const ArPose pose) const
    {
      ArPose perpPose;
      ArLine perpLine;
      makeLinePerp(&pose, &perpLine);
      if (!intersects(&perpLine, &perpPose))
	return -1;
      return (perpPose.squaredFindDistanceTo(pose));
    }
  /// Determine the intersection point between this line segment, and a perpendicular line passing through the given pose (i.e. projects the given pose onto this line segment.)
  /**
   * If there is no intersection, false is returned.
     @param pose The X and Y components of this pose object indicate the point to project onto this line segment.
     @param perpPoint The X and Y components of this pose object are set to indicate the intersection point
     @return true if an intersection was found and perpPoint was modified, false otherwise.
     @swigomit
  **/
  bool getPerpPoint(ArPose pose, ArPose *perpPoint) const
    {
      ArLine perpLine;
      makeLinePerp(&pose, &perpLine);
      return intersects(&perpLine, perpPoint);
    }

protected:
  double myA, myB, myC;
};

/// Represents a line segment in two-dimensional space.
/** The segment is defined by the coordinates of each endpoint. */
class ArLineSegment
{
public:
#ifndef SWIG
  /** @swigomit */
  ArLineSegment() {}
  /** @brief Constructor with endpoints
   *  @swigomit
   */
  ArLineSegment(double x1, double y1, double x2, double y2)
    { 	newEndPoints(x1, y1, x2, y2); }
#endif // SWIG
  /// Constructor with endpoints as ArPose objects. Only X and Y components of the poses will be used.
  ArLineSegment(ArPose pose1, ArPose pose2)
    { 	newEndPoints(pose1.getX(), pose1.getY(), pose2.getX(), pose2.getY()); }
  virtual ~ArLineSegment() {}
  /// Set new end points for this line segment
  void newEndPoints(double x1, double y1, double x2, double y2)
    {
      myX1 = x1; myY1 = y1; myX2 = x2; myY2 = y2; 
      myLine.newParametersFromEndpoints(myX1, myY1, myX2, myY2);
    }
  /// Set new end points for this line segment
  void newEndPoints(const ArPose& pt1, const ArPose& pt2)
    {
      newEndPoints(pt1.getX(), pt1.getY(), pt2.getX(), pt2.getY());
    }
  /// Get the first endpoint (X1, Y1)
  ArPose getEndPoint1(void) const { return ArPose(myX1, myY1); }
  /// Get the second endpoint of (X2, Y2)
  ArPose getEndPoint2(void) const { return ArPose(myX2, myY2); }
  /// Determine where a line intersects this line segment
  /**
      @param line Line to check for intersection against this line segment.
      @param pose if the lines intersect, the X and Y components of this pose are set to the point of intersection.
      @return true if they intersect, false if they do not 
   **/
  bool intersects(const ArLine *line, ArPose *pose) const
    {
      ArPose intersection;
      // see if it intersects, then make sure its in the coords of this line
      if (myLine.intersects(line, &intersection) &&
	  linePointIsInSegment(&intersection))
      {
	pose->setPose(intersection);
	return true;
      }
      else
	return false;
    }

  /** @copydoc intersects(const ArLine *line, ArPose *pose) const */
  bool intersects(ArLineSegment *line, ArPose *pose) 
    {
      ArPose intersection;
      // see if it intersects, then make sure its in the coords of this line
      if (myLine.intersects(line->getLine(), &intersection) &&
	  linePointIsInSegment(&intersection) &&
	  line->linePointIsInSegment(&intersection))
      {
	pose->setPose(intersection);
	return true;
      }
      else
	return false;
    }
#ifndef SWIG
  /// Determine the intersection point between this line segment, and a perpendicular line passing through the given pose (i.e. projects the given pose onto this line segment.)
  /**
   * If there is no intersection, false is returned.
     @param pose The X and Y components of this pose object indicate the point to project onto this line segment.
     @param perpPoint The X and Y components of this pose object are set to indicate the intersection point
     @return true if an intersection was found and perpPoint was modified, false otherwise.
     @swigomit
  **/
  bool getPerpPoint(ArPose pose, ArPose *perpPoint) 
    {
      ArLine perpLine;
      myLine.makeLinePerp(&pose, &perpLine);
      return intersects(&perpLine, perpPoint);
    }
#endif
  /** @copydoc getPerpPoint(ArPose, ArPose*)  
   *  (This version simply allows you to pass the first pose as a pointer, in
   *  time-critical situations where a full copy of the object would impact
   *  performance.)
  */
  bool getPerpPoint(const ArPose *pose, ArPose *perpPoint) 
    {
      ArLine perpLine;
      myLine.makeLinePerp(pose, &perpLine);
      return intersects(&perpLine, perpPoint);
    }
   /// Calculate the distance from the given point to (its projection on) this line segment
  /**
     @param pose the the pose to find the perp point of

     @return if the pose does not intersect segment it will return < 0
     if the pose intersects the segment it will return the distance to
     the intersection
  **/
  virtual double getPerpDist(const ArPose pose)
    {
      ArPose perpPose;
      ArLine perpLine;
      myLine.makeLinePerp(&pose, &perpLine);
      if (!intersects(&perpLine, &perpPose))
	return -1;
      return (perpPose.findDistanceTo(pose));
    }
   /// Calculate the squared distance from the given point to (its projection on) this line segment
  /**
     @param pose the the pose to find the perp point of

     @return if the pose does not intersect segment it will return < 0
     if the pose intersects the segment it will return the distance to
     the intersection
  **/
  virtual double getPerpSquaredDist(const ArPose pose)
    {
      ArPose perpPose;
      ArLine perpLine;
      myLine.makeLinePerp(&pose, &perpLine);
      if (!intersects(&perpLine, &perpPose))
	      return -1;
      return (perpPose.squaredFindDistanceTo(pose));
    }

   /// Gets the distance from this line segment to a point.
  /**
   * If the point can be projected onto this line segment (i.e. a
   * perpendicular line can be drawn through the point), then
   * return that distance. Otherwise, return the distance to the closest
   * endpoint.
     @param pose the pointer of the pose to find the distance to
  **/
  double getDistToLine(const ArPose pose)
    {
      ArPose perpPose;
      ArLine perpLine;
      myLine.makeLinePerp(&pose, &perpLine);
      if (!intersects(&perpLine, &perpPose))
      {
	      return ArUtil::findMin(
		                    ArMath::roundInt(getEndPoint1().findDistanceTo(pose)),
		                    ArMath::roundInt(getEndPoint2().findDistanceTo(pose)));
      }
      return (perpPose.findDistanceTo(pose));
    }
  
  /// Determines the length of the line segment
  double getLengthOf() const
  {
    return ArMath::distanceBetween(myX1, myY1, myX2, myY2);
  }


  /// Gets the x coordinate of the first endpoint
  double getX1(void) const { return myX1; }
  /// Gets the y coordinate of the first endpoint
  double getY1(void) const { return myY1; } 
  /// Gets the x coordinate of the second endpoint
  double getX2(void) const { return myX2; }
  /// Gets the y coordinate of the second endpoint
  double getY2(void) const { return myY2; }
  /// Gets the A line parameter (see ArLine)
  double getA(void) const { return myLine.getA(); }
  /// Gets the B line parameter (see ArLine)
  double getB(void) const { return myLine.getB(); }
  /// Gets the C line parameter (see ArLine)
  double getC(void) const { return myLine.getC(); }
  /// Internal function for seeing if a point on our line is within our segment
  bool linePointIsInSegment(ArPose *pose) const
    {
      return (((myX1 == myX2) || 
	             (pose->getX() >= myX1 && pose->getX() <= myX2) || 
	             (pose->getX() <= myX1 && pose->getX() >= myX2)) &&
	            ((myY1 == myY2) || 
	             (pose->getY() >= myY1 && pose->getY() <= myY2) || 
	             (pose->getY() <= myY1 && pose->getY() >= myY2)));
    }
  const ArLine *getLine(void) const { return &myLine; }

  /// Equality operator (for sets)
  virtual bool operator==(const ArLineSegment& other) const
  {

    return ((fabs(myX1 - other.myX1) < ArMath::epsilon()) &&
            (fabs(myY1 - other.myY1) < ArMath::epsilon()) &&
            (fabs(myX2 - other.myX2) < ArMath::epsilon()) &&
            (fabs(myY2 - other.myY2) < ArMath::epsilon()));
  }

  virtual bool operator!=(const ArLineSegment& other) const
  {
    return ((fabs(myX1 - other.myX1) > ArMath::epsilon()) ||
            (fabs(myY1 - other.myY1) > ArMath::epsilon()) ||
            (fabs(myX2 - other.myX2) > ArMath::epsilon()) ||
            (fabs(myY2 - other.myY2) > ArMath::epsilon()));

  }

  /// Less than operator (for sets)
  virtual bool operator<(const ArLineSegment& other) const
  {

    if (fabs(myX1 - other.myX1) > ArMath::epsilon()) {
      return myX1 < other.myX1;
    }
    else if (fabs(myY1 - other.myY1) > ArMath::epsilon()) {
      return myY1 < other.myY1;  
    }
    if (fabs(myX2 - other.myX2) > ArMath::epsilon()) {
      return myX2 < other.myX2;
    }
    else if (fabs(myY2 - other.myY2) > ArMath::epsilon()) {
      return myY2 < other.myY2;
    }
    // Otherwise... all coords are equal
    return false;
  }

protected:
  double myX1, myY1, myX2, myY2;
  ArLine myLine;
};

/// This is a class for computing a running average of a number of elements
class ArRunningAverage
{
public:
  /// Constructor, give it the number of elements you want to average
  AREXPORT ArRunningAverage(size_t numToAverage);
  /// Destructor
  AREXPORT ~ArRunningAverage();
  /// Gets the average
  AREXPORT double getAverage(void) const;
  /// Adds a number
  AREXPORT void add(double val);
  /// Clears the average
  AREXPORT void clear(void);
  /// Gets the number of elements
  AREXPORT size_t getNumToAverage(void) const;
  /// Sets the number of elements
  AREXPORT void setNumToAverage(size_t numToAverage);
  /// Gets the num averaged
  AREXPORT size_t getCurrentNumAveraged(void);
protected:
  size_t myNumToAverage;
  double myTotal;
  size_t myNum;
  std::list<double> myVals;
};


//class ArStrCaseCmpOp :  public std::binary_function <const std::string&, const std::string&, bool> 
/// strcasecmp for sets
struct ArStrCaseCmpOp 
{
public:
  bool operator() (const std::string &s1, const std::string &s2) const
  {
    return strcasecmp(s1.c_str(), s2.c_str()) < 0;
  }
};

/// ArPose less than comparison for sets
struct ArPoseCmpOp
{
public:
  bool operator() (const ArPose &pose1, const ArPose &pose2) const
  {
    return (pose1 < pose2);

    //return (pose1.getX() < pose2.getX() || pose1.getY() < pose2.getY() ||
	  //        pose1.getTh() < pose2.getTh());
  }
};

// ArLineSegment less than comparison for sets
struct ArLineSegmentCmpOp
{
public:
  bool operator() (const ArLineSegment &line1, 
		               const ArLineSegment &line2) const
  {
    return (line1 < line2);

    //return (line1.getX1() < line2.getX1() || line1.getY1() < line2.getY1() ||
	  //  line1.getX2() < line2.getX2() || line1.getY2() < line2.getY2());
  }
};


#if !defined(WIN32) && !defined(SWIG)
/** Run the program as a background daemon (i.e. fork it) (Only available in Linux).
 *  @swigomit
 *  @notwindows
 */
class ArDaemonizer
{
public:
  /// Constructor that sets up for daemonizing if arg checking
  AREXPORT ArDaemonizer(int *argc, char **argv);
  /// Destructor
  AREXPORT ~ArDaemonizer();
  /// Daemonizes if asked too by arguments
  AREXPORT bool daemonize(void);
  /// Daemonizes always
  AREXPORT bool forceDaemonize(void);
  /// Logs the options
  AREXPORT void logOptions(void) const;
  /// Returns if we're daemonized or not
  bool isDaemonized(void) { return myIsDaemonized; }
protected:
  ArArgumentParser myParser;
  bool myIsDaemonized;
  ArConstFunctorC<ArDaemonizer> myLogOptionsCB;
};
#endif // !win32 && !swig



/// Contains enumeration of four user-oriented priority levels (used primarily by ArConfig)
class ArPriority
{
public:
  enum Priority 
  {
    IMPORTANT, ///< Basic things that should be modified to suit 
    BASIC = IMPORTANT,  ///< Basic things that should be modified to suit 

    NORMAL,    ///< Intermediate things that users may want to modify
    INTERMEDIATE = NORMAL, ///< Intermediate things that users may want to modify

    DETAILED, ///< Advanced items that probably shouldn't be modified
    TRIVIAL = DETAILED, ///< Advanced items (alias for historic reasons)
    ADVANCED = DETAILED, ///< Advanced items that probably shouldn't be modified

    EXPERT,  ///< Items that should be modified only by expert users or developers
    FACTORY, ///< Items that are "factory settings" and should not be modified

    LAST_PRIORITY = FACTORY ///< Last value in the enumeration
  };

  enum {
    PRIORITY_COUNT = LAST_PRIORITY + 1 ///< Number of priority values
  };

  /// Returns the displayable text string for the given priority
  AREXPORT static const char * getPriorityName(Priority priority);
protected:

  /// Whether the map of priorities to display text has been initialized
  static bool ourStringsInited;
  /// Map of priorities to displayable text
  static std::map<Priority, std::string> ourPriorityNames;
  /// Display text used when a priority's displayable text has not been defined
  static std::string ourUnknownPriorityName;
};

/// holds information about ArStringInfo component strings (it's a helper class for other things)
/**
   This class holds information for about different strings that are available 
 **/
class ArStringInfoHolder
{
public:
  /// Constructor
  ArStringInfoHolder(const char *name, ArTypes::UByte2 maxLength, 
		     ArFunctor2<char *, ArTypes::UByte2> *functor)
    { myName = name; myMaxLength = maxLength; myFunctor = functor; }
  /// Destructor
  virtual ~ArStringInfoHolder() {}
  /// Gets the name of this piece of info
  const char *getName(void) { return myName.c_str(); }
  /// Gets the maximum length of this piece of info
  ArTypes::UByte2 getMaxLength(void) { return myMaxLength; }
  /// Gets the function that will fill in this piece of info
  ArFunctor2<char *, ArTypes::UByte2> *getFunctor(void) { return myFunctor; }
protected:
  std::string myName;
  ArTypes::UByte2 myMaxLength;
  ArFunctor2<char *, ArTypes::UByte2> *myFunctor;
};

/// This class just holds some helper functions for the ArStringInfoHolder 
class ArStringInfoHolderFunctions
{
public:
  static void intWrapper(char * buffer, ArTypes::UByte2 bufferLen, 
			 ArRetFunctor<int> *functor, const char *format)
    { snprintf(buffer, bufferLen - 1, format, functor->invokeR()); 
    buffer[bufferLen-1] = '\0'; }
  static void doubleWrapper(char * buffer, ArTypes::UByte2 bufferLen, 
			    ArRetFunctor<double> *functor, const char *format)
    { snprintf(buffer, bufferLen - 1, format, functor->invokeR()); 
    buffer[bufferLen-1] = '\0'; }
  static void boolWrapper(char * buffer, ArTypes::UByte2 bufferLen, 
			  ArRetFunctor<bool> *functor, const char *format)
    { snprintf(buffer, bufferLen - 1, format, 
	       ArUtil::convertBool(functor->invokeR())); 
    buffer[bufferLen-1] = '\0'; }
  static void stringWrapper(char * buffer, ArTypes::UByte2 bufferLen, 
			    ArRetFunctor<const char *> *functor, 
			    const char *format)
  { snprintf(buffer, bufferLen - 1, format, functor->invokeR()); 
  buffer[bufferLen-1] = '\0'; }
    
};

/// A class to hold a list of callbacks to call
class ArCallbackList
{
public:
  /// Constructor
  AREXPORT ArCallbackList(const char *name = "", 
			  ArLog::LogLevel logLevel = ArLog::Verbose,
			  bool singleShot = false);
  /// Destructor
  AREXPORT virtual ~ArCallbackList();
  /// Adds a callback
  AREXPORT void addCallback(ArFunctor *functor, int position = 50);
  /// Removes a callback
  AREXPORT void remCallback(ArFunctor *functor);
  /// Sets the name
  AREXPORT void setName(const char *name);
#ifndef SWIG
  /// Sets the name with formatting
  /** @swigomit use setName() */
  AREXPORT void setNameVar(const char *name, ...);
#endif
  /// Sets the log level
  AREXPORT void setLogLevel(ArLog::LogLevel logLevel);
  /// Sets if its single shot
  AREXPORT void setSingleShot(bool singleShot);
  /// Calls the callback list
  AREXPORT void invoke(void);
protected:
  ArMutex myDataMutex;
  ArLog::LogLevel myLogLevel;
  std::string myName;
  std::multimap<int, ArFunctor *> myList;
  bool mySingleShot;
};

#ifndef ARINTERFACE
#ifndef SWIG
class ArLaserCreatorHelper
{
public:
  /// Creates an ArLMS2xx
  static ArLaser *createLMS2xx(int laserNumber, const char *logPrefix);
  /// Gets functor for creating an ArLMS2xx
  static ArRetFunctor2<ArLaser *, int, const char *> *getCreateLMS2xxCB(void);
  /// Creates an ArUrg
  static ArLaser *createUrg(int laserNumber, const char *logPrefix);
  /// Gets functor for creating an ArUrg
  static ArRetFunctor2<ArLaser *, int, const char *> *getCreateUrgCB(void);

protected:
  static ArGlobalRetFunctor2<ArLaser *, int, const char *> ourLMS2xxCB;
  static ArGlobalRetFunctor2<ArLaser *, int, const char *> ourUrgCB;
};
#endif // SWIG
#endif // ARINTERFACE

#ifndef SWIG
class ArDeviceConnectionCreatorHelper
{
public:
  /// Creates an ArSerialConnection
  static ArDeviceConnection *createSerialConnection(
	  const char *port, const char *defaultInfo, const char *logPrefix);
  /// Gets functor for creating an ArSerialConnection
  static ArRetFunctor3<ArDeviceConnection *, const char *, const char *, 
		       const char *> *getCreateSerialCB(void);

  /// Creates an ArTcpConnection
  static ArDeviceConnection *createTcpConnection(
	  const char *port, const char *defaultInfo, const char *logPrefix);
  /// Gets functor for creating an ArTcpConnection
  static ArRetFunctor3<ArDeviceConnection *, const char *, const char *, 
		       const char *> *getCreateTcpCB(void);

  /// Sets the success log level
  static void setSuccessLogLevel(ArLog::LogLevel successLogLevel);
  /// Sets the success log level
  static ArLog::LogLevel setSuccessLogLevel(void);
protected:
  static ArGlobalRetFunctor3<ArDeviceConnection *, const char *, const char *, 
			     const char *> ourSerialCB;
  static ArGlobalRetFunctor3<ArDeviceConnection *, const char *, const char *, 
			     const char *> ourTcpCB;
  static ArLog::LogLevel ourSuccessLogLevel;
};
#endif // SWIG

#endif // ARIAUTIL_H