math_aux.cpp File Reference

#include <cstdlib>
#include <vreckoAP/Nature/Clouds/math_aux.h>

Functions
unsigned int	randGauss (unsigned int number, unsigned int n)
float	randFloat (void)
float	interpolationLinear (float a, float b, float t)
void	clampColor (osg::Vec4f &color, float maximum)

Detailed Description

Author

Jakub Kroupal (original Atmospheric plug-in)

Rastislav Tisovcik (revised Clouds ability)

Version

2.0

Date

2008 (Atmospheric), January 2011 - February 2011 (Clouds)

Function Documentation

void clampColor	(	osg::Vec4f &	color,
		float	maximum
	)

Clamps the color in case some of its values are larger than the given maximum.

Parameters

color	Color to be clamped.
maximum	Threshold value; color channels larger than maximum will be clamped to it, smaller values will be preserved.

float interpolationLinear	(	float	a,
		float	b,
		float	t
	)

Linear interpolation of two values.

Parameters

a	The first value to interpolate.
b	The second value to interpolate.
t	Value on the interval. T = 0.0 returns as a result value A, T = 1.0 returns as a result value B

float randFloat

(

void

)

Returns a pseudo-random float value from the interval <0, 1.0)

Returns

Pseudo-random float value

unsigned int randGauss	(	unsigned int	cislo,
		unsigned int	n
	)

Returns a pseudo-random unsigned integer value based on Gauss distribution

Parameters

[in]	number	Maximum value of the number
[in]	n	Number of iterations

Returns

Pseudo-random number based on Gauss distribution