ALMaSS_MathFuncs Class Reference

ALMaSS_MathFuncs constructor. More...

#include <Misc.h>

Public Member Functions
	ALMaSS_MathFuncs ()
	ALMaSS_MathFuncs constructor. More...
virtual	~ALMaSS_MathFuncs ()
	ALMaSS_MathFuncs deconstructor. More...
int	CalcDistPythagoras (int a_x, int a_y, int a_x1, int a_y1)
	Calculate distance using Pythagoras. More...
int	CalcDistPythagorasApprox (int a_x, int a_y, int a_x1, int a_y1)
	Calculate distance using the Pythagoras approximation. More...

Detailed Description

ALMaSS_MathFuncs constructor.

Constructor & Destructor Documentation

ALMaSS_MathFuncs()

ALMaSS_MathFuncs::ALMaSS_MathFuncs ( )

inline

ALMaSS_MathFuncs constructor.

This class is designed to hold general math functions frequently used in the ALMaSS code. For example distance calculations using either Pythagoras or the approximation of Pythagoras

                       {
        ;
    }

~ALMaSS_MathFuncs()

virtual ALMaSS_MathFuncs::~ALMaSS_MathFuncs ( )

inlinevirtual

ALMaSS_MathFuncs deconstructor.

                                {
        ;
    };

Member Function Documentation

CalcDistPythagoras()

int ALMaSS_MathFuncs::CalcDistPythagoras	(	int	a_x,
		int	a_y,
		int	a_x1,
		int	a_y1
	)

Calculate distance using Pythagoras.

                                                                               {
    int dx = a_x - a_x1;
    int dy = a_y - a_y1;
    int dist = (int)sqrt( (double)(dx*dx + dy*dy) );
    return dist;
}

CalcDistPythagorasApprox()

int ALMaSS_MathFuncs::CalcDistPythagorasApprox	(	int	a_x,
		int	a_y,
		int	a_x1,
		int	a_y1
	)

Calculate distance using the Pythagoras approximation.

The approximation to Pythagorus is accurate to around 6%

                                                                                     {
    int dx = abs( a_x - a_x1 );
    int dy = abs( a_y - a_y1 );
    dx++;  //To avoid division by zero
    dy++;
    int dist;
    if (dx>dy) {
        dist = dx + (dy * dy) / (2 * dx);
    }
    else dist = dy + (dx * dx) / (2 * dy);
    return dist;
}

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The documentation for this class was generated from the following files:

• /builds/ALMaSS/ALMaSS_MIDox/Landscape/Misc.h
• /builds/ALMaSS/ALMaSS_MIDox/Landscape/Misc.cpp