acolor.h File Reference

#include "GeomExport.h"
#include "maxheap.h"
#include "maxtypes.h"
#include "point3.h"
#include "point4.h"
#include "color.h"
#include <wingdi.h>

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

typedef AColor RGBA

Function Documentation

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.

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.

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));
    }

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));
    }

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;
    }

static float Intens ( const AColor &  c )

inlinestatic

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