acolor.h File Reference

#include "GeomExport.h"
#include "point3.h"
#include "point4.h"
#include "color.h"
#include "maxcolors.h"
#include <cstdint>

Classes
class	AColor

Typedefs
typedef AColor	RGBA

Functions
int	MaxComponent (const AColor &)
int	MinComponent (const AColor &)
AColor	operator* (float f, const AColor &a)
AColor	operator* (const AColor &a, float f)
AColor	CompOver (const AColor &fg, const AColor &bg)
static float	Intens (const AColor &c)

Typedef Documentation

RGBA

typedef AColor RGBA

Function Documentation

MaxComponent()

int MaxComponent

(

const AColor &

)

Remarks

Returns the index of the component with the maximum absolute value.

Parameters:

const AColor&

The color to check.

Returns

The index of the component with the maximum absolute value. r=0, g=1, b=2, a=3.

MinComponent()

int MinComponent

(

const AColor &

)

Remarks

Returns the index of the component with the minimum absolute value.

Parameters:

const AColor&

The color to check.

Returns

The index of the component with the minimum absolute value. r=0, g=1, b=2, a=3.

operator*() [1/2]

AColor operator* ( float  f, const AColor &  a  )

inline

Remarks

Multiplies each component of an AColor by a float.

Returns

An AColor with each component multiplied by a float.

{
    return (AColor(a.r * f, a.g * f, a.b * f, a.a * f));
}

operator*() [2/2]

AColor operator* ( const AColor &  a, float  f  )

inline

Remarks

Multiplies each component of an AColor by a float.

Returns

An AColor with each component multiplied by a float.

{
    return (AColor(a.r * f, a.g * f, a.b * f, a.a * f));
}

CompOver()

AColor CompOver ( const AColor &  fg, const AColor &  bg  )

inline

Remarks

Composite fg over bg, assuming associated alpha, i.e. pre-multiplied alpha for both fg and bg

This is: fg + (1.0f-fg.a)*bg

Parameters:

const AColor &fg

Specifies the foreground color to composite.

const AColor& bg

Specifies the background color to composite over.

Returns

The resulting AColor.

{
    return fg + (1.0f - fg.a) * bg;
}

Intens()

static float Intens ( const AColor &  c )

inlinestatic

{
    return (c.r + c.g + c.b) / 3.0f;
}