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| XmtHSLToRGB(3) | FreeBSD Library Functions Manual | XmtHSLToRGB(3) |
NAME
XmtHSLToRGB(), XmtRGBToHSL() - convert between the HSL and RGB color spaces.SYNOPSIS
void XmtHSLToRGB(unsigned h, unsigned s, unsigned l, unsigned *r, unsigned *g, unsigned *b)
void XmtRGBToHSL(unsigned r, unsigned g, unsigned b, unsigned *h, unsigned *s, unsigned *l)
ARGUMENTS
- h
- The Hue of the color. This is an input to XmtHSLToRGB() and an output from XmtRGBToHSL().
- s
- The Saturation of the color. This is an input to XmtHSLToRGB() and an output from XmtRGBToHSL().
- l
- The Lightness of the color. This is an input to XmtHSLToRGB() and an output from XmtRGBToHSL().
- r
- The Red component of the color. This is an input to XmtRGBToHSL() and an output from XmtHSLToRGB().
- g
- The Green component of the color. This is an input to XmtRGBToHSL() and an output from XmtHSLToRGB().
- b
- The Blue component of the color. This is an input to XmtRGBToHSL() and an output from XmtHSLToRGB().
DESCRIPTION
XmtHSLToRGB() converts a color specified in the HSL color space to the equivalent color in the RGB color space. XmtRGBToHSL() performs the opposite conversion-from the RGB color space to the HSL color space.In X, the r, g, and b components of an RGB color vary between 0 and 65535. As implemented by Xmt, the Hue of a HSL color is an angle between 0 and 359, and the Saturation and Lightness of a color vary between 0 and 100. Note that the h, s, and l arguments are unsigned, not float or double. See Chapter 6, Using Color, for more information on the HSL color space.
SEE ALSO
Chapter 4, Using Color,XmtAllocColor(), XmtRegisterPixelConverter().
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