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man page for mlib_imagecolorhsv2rgb

mlib_ImageColorHSV2RGB(3MLIB)				    mediaLib Library Functions				     mlib_ImageColorHSV2RGB(3MLIB)

NAME
mlib_ImageColorHSV2RGB - HSV to RGB color conversion SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageColorHSV2RGB(mlib_image *dst, const mlib_image *src); DESCRIPTION
The mlib_ImageColorHSV2RGB() function performs a conversion from hue/saturation/value to red/green/blue. The source and destination images must be three-channel images. It uses the following equations: P = V*(1 - S) Q = V*(1 - S*fraction(H*6)) T = V*(1 - S*(1 - fraction(H*6))) R, G, B = V, T, P if 0 <= H < 1/6 R, G, B = Q, V, P if 1/6 <= H < 2/6 R, G, B = P, V, T if 2/6 <= H < 3/6 R, G, B = P, Q, V if 3/6 <= H < 4/6 R, G, B = T, P, V if 4/6 <= H < 5/6 R, G, B = V, P, Q if 5/6 <= H < 1 where 0 <= H < 1 and 0 <= S, V, P, Q, T, R, G, B <= 1. Assuming a pixel in the source image is (h, s, v) and its corresponding pixel in the destination image is (r, g, b), then for MLIB_BYTE images, the following applies: H = h/256 S = s/255 V = v/255 r = R*255 g = G*255 b = B*255 for MLIB_SHORT images, the following applies: H = (h + 32768)/65536 S = (s + 32768)/65535 V = (v + 32768)/65535 r = R*65535 - 32768 g = G*65535 - 32768 b = B*65535 - 32768 for MLIB_USHORT images, the following applies: H = h/65536 S = s/65535 V = v/65535 r = R*65535 g = G*65535 b = B*65535 and for MLIB_INT images, the following applies: H = (h + 2147483648)/4294967296 S = (s + 2147483648)/4294967295 V = (v + 2147483648)/4294967295 r = R*4294967295 - 2147483648 g = G*4294967295 - 2147483648 b = B*4294967295 - 2147483648 PARAMETERS
The function takes the following arguments: dst Pointer to destination image. src Pointer to source image. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageColorHSV2RGB_Fp(3MLIB), mlib_ImageColorRGB2HSV(3MLIB), mlib_ImageColorRGB2HSV_Fp(3MLIB), attributes(5) SunOS 5.10 10 Nov 2004 mlib_ImageColorHSV2RGB(3MLIB)

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