Color Handling Macros

Macros for handling 32-bit color values. More...

Data Structures
struct	Color4f
struct	Color4b

Macros
#define	RED(c)   (((c)>>24)&0xFF)
#define	GREEN(c)   (((c)>>16)&0xFF)
#define	BLUE(c)   (((c)>>8)&0xFF)
#define	ALPHA(c)   ((c) &0xFF)
#define	TO_RGBA(r, g, b, a)
#define	TO_IA(i, a)   (i&0xff)|((a&0xff)<<8)

Typedefs
typedef struct Color4f	Color4f
typedef struct Color4b	Color4b
typedef enum DefaultColor	DefaultColor

Enumerations
enum	DefaultColor {   Color_White , Color_Black , Color_Red , Color_Green ,   Color_Blue }

Functions
Color4f	Color_Create4f (float red, float green, float blue, float alpha)
Color4f	Color_CreateFromPointer4f (Color4f *color)
Color4b	Color_Create4b (u8 red, u8 green, u8 blue, u8 alpha)
Color4f	Color_HexToFloats (u32 color)
Color4b	Color_HexToBytes (u32 color)
u32	Color_FloatsToHex (Color4f components)
Color4f *	Color_GetDefaultColor (DefaultColor color)

Variables
GLfloat	Color4f::red
GLfloat	Color4f::green
GLfloat	Color4f::blue
GLfloat	Color4f::alpha
u8	Color4b::red
u8	Color4b::green
u8	Color4b::blue
u8	Color4b::alpha

Detailed Description

Macros for handling 32-bit color values.

Macro Definition Documentation

ALPHA

#define ALPHA

(

c

)

((c) &0xFF)

Gets the alpha component intensity from a 32-bit color value.

Parameters

[in]

c

32-bit RGBA color value

Returns

Alpha component of value

BLUE

#define BLUE

(

c

)

(((c)>>8)&0xFF)

Gets the blue component intensity from a 32-bit color value

Parameters

[in]

c

32-bit RGBA color value

Returns

Blue component of value

GREEN

#define GREEN

(

c

)

(((c)>>16)&0xFF)

Gets the green component intensity from a 32-bit color value.

Parameters

[in]

c

32-bit RGBA color value

Returns

Green component of value

RED

#define RED

(

c

)

(((c)>>24)&0xFF)

Gets the red component intensity from a 32-bit color value.

Parameters

[in]

c

32-bit RGBA color value

Returns

Red component of value

TO_IA

#define TO_IA	(		i,
			a
	)		(i&0xff)|((a&0xff)<<8)

< Constructs a 32-bit RGBA color value.

Parameters

[in]	r	Red component
[in]	g	Green component
[in]	b	Blue component
[in]	a	Alpha component

Returns

32-bit color value Constructs a 16-bit intensity with alpha value.

Parameters

[in]	i	Intensity component
[in]	a	Alpha component

Returns

16-bit intensity with alpha value

TO_RGBA

#define TO_RGBA	(		r,
			g,
			b,
			a
	)

Value:

                        ((u32)((((u32)(r))<<24) | \
                        ((((u32)(g))&0xFF)<<16) | \
                        ((((u32)(b))&0xFF)<<8) | \
                        (((u32)(a))&0xFF)))