AG_Color AG_ColorRGB_8 (Uint8 r, Uint8 g, Uint8 b)
AG_Color AG_ColorRGBA_8 (Uint8 r, Uint8 g, Uint8 b, Uint8 a)
AG_Color AG_ColorRGB_16 (Uint16 r, Uint16 g, Uint16 b)
AG_Color AG_ColorRGBA_16 (Uint16 r, Uint16 g, Uint16 b, Uint16 a)
void AG_HSV2Color (float hue, float sat, float val, AG_Color *C)
void AG_Color2HSV (AG_Color c, float *hue, float *sat, float *val)
AG_Color AG_ColorHex16 (Uint16 hex)
AG_Color AG_ColorHex32 (Uint32 hex)
AG_Color AG_ColorHex64 (Uint64 hex)
AG_Color AG_ColorFromString (const char *spec, const AG_Color *parentColor)
AG_Color AG_ColorAdd (AG_Color c, AG_ColorOffset offs)
int AG_ColorCompare (AG_Color a, AG_Color b)
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AG_ColorRGB_8() and
AG_ColorRGB_16() return an
AG_Color from 8- or 16-bit red, green and blue components
(with alpha set to fully opaque).
AG_ColorRGBA_8() and
AG_ColorRGBA_16() return an
AG_Color from 8- or 16-bit RGB and alpha components.
AG_HSV2Color() maps a color in HSV space to the closest approximation in RGB space, and
copies the A component as-is.
The inverse operation is performed by
AG_Color2HSV(). Note: H and V become increasingly lossy as S->0.
The
AG_ColorHex16(), AG_ColorHex32() and
AG_ColorHex64() routines convert a color packed into
0xRGBA (4-bit components),
0xRRGGBBAA (8-bit components), or
0xRRRRGGGGBBBBAAAA (16-bit components) into an
AG_Color.
AG_ColorFromString() converts a text-based color representation to an
AG_Color. The following formats are allowed:
"#RRGGBB"
"#RRRRGGGGBBBBAAAA" (if AG_LARGE)
"r:g:b[:a]"
"r,g,b[,a]"
"rgb(r,g,b[,a])"
"hsv(h,s,v[,a])" (if HAVE_FLOAT)
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Components with a terminating "%" character are interpreted as a percentage
of the corresponding component in
parentColor (if non-NULL).
AG_ColorAdd() adds the components of a color
c to the signed components of
offs and returns the clamped result.
The
AG_ColorOffset structure is declared as:
typedef struct ag_color_offset {
#if AG_MODEL == AG_LARGE
Sint16 r,g,b,a;
#else
Sint8 r,g,b,a;
#endif
} AG_ColorOffset;
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AG_ColorCompare() returns non-zero if the two colors differ.
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