toolsmath.h

C++ image processing.Mainly it occupies some filters to detect some prperties of image. Release.

#ifndef ToolsMath_h
#define ToolsMath_h
#include "math.h"
#include <stdlib.h>

/* 

This "SOFTWARE" is a free software.

You are allowed to download, use, modify and redistribute this software.
The software is provided "AS IS" without warranty of any kind.

Copyright: University of Koblenz-Landau, Dirk Balthasar

*/


/**
\author Dirk Balthasar, 2002, private
*/

namespace tools
{
	/// arg*arg
	template <class Type>
	Type square(Type arg)
	{
		return arg*arg;
	}
	
	/// Return the maximum
	template<class t>
		t Max(t A, t B)
	{
		return ((A)>(B)?(A):(B));
	}
	
	/// Return the minximum
	template<class t>
		t Min(t A, t B)
	{
		return ((A)<(B)?(A):(B));
	}
	/// n.x -> n if x < 0.5, n+1 if y >= 0.5
	inline int round(double d)
	{
		return (int)floor(d + 0.5);
	}
	
	/// random number between [0..1]
	inline float Rand()
	{
		return (float)rand()/(float)RAND_MAX;
	}

	inline unsigned int CyclePos(int pos, int cycle)
	{
		if (pos < 0) return (cycle + pos % cycle) % cycle; // second modulo needed if pos == n * -cycle
		else
			if (pos >= cycle) return pos % cycle;
			else
				return pos;
	}
	inline int CycleDiff(int StartPoint, int  GoalPoint, int Cycle)
	{
		if (StartPoint <= GoalPoint)
			if (abs (GoalPoint-StartPoint) < abs(GoalPoint-(StartPoint+Cycle)))
				return (GoalPoint-StartPoint);
			else
				return (GoalPoint-(StartPoint+Cycle));
			else 
				if (abs(GoalPoint-StartPoint)<abs(GoalPoint-(StartPoint-Cycle)))
					return (GoalPoint-StartPoint);
				else 
					return (GoalPoint-(StartPoint-Cycle));
	}	
};

#endif