XcmsCIELabQueryMaxC






XcmsCIELabQueryMaxC, XcmsCIELabQueryMaxL, XcmsCIELabQueryMaxLC,
XcmsCIELabQueryMinL − obtain the CIE L*a*b* coordinates

Status XcmsCIELabQueryMaxC(XcmsCCC ccc, XcmsFloat hue_angle, XcmsFloat L_star,
XcmsColor *color_return); Status XcmsCIELabQueryMaxL(XcmsCCC ccc, XcmsFloat
hue_angle, XcmsFloat chroma, XcmsColor *color_return); Status
XcmsCIELabQueryMaxLC(XcmsCCC ccc, XcmsFloat hue_angle, XcmsColor *color_return);
Status XcmsCIELabQueryMinL(XcmsCCC ccc, XcmsFloat hue_angle, XcmsFloat chroma,
XcmsColor *color_return);



ccc       Specifies the CCC.  Note that the CCC’s Client White Point and White
          Point Adjustment procedures are ignored.

chroma    Specifies the chroma at which to find maximum lightness (MaxL) or
          minimum lightness (MinL).

color_return
          Returns the CIE L*a*b* coordinates of maximum chroma (MaxC and MaxLC),
          maximum lightness (MaxL), or minimum lightness (MinL) displayable by
          the screen for the given hue angle and lightness (MaxC), hue angle and
          chroma (MaxL and MinL), or hue angle (MaxLC).  The white point
          associated with the returned color specification is the Screen White
          Point.  The value returned in the pixel member is undefined.

hue_angle Specifies the hue angle (in degrees) at which to find maximum chroma
          (MaxC and MaxLC), maximum lightness (MaxL), or minimum lightness
          (MinL).

L_star    Specifies the lightness (L*) at which to find maximum chroma (MaxC).

The XcmsCIELabQueryMaxC function, given a hue angle and lightness, finds the
point of maximum chroma displayable by the screen.  It returns this point in CIE
L*a*b* coordinates.

The XcmsCIELabQueryMaxL function, given a hue angle and chroma, finds the point
in CIE L*a*b* color space of maximum lightness (L*) displayable by the screen.
It returns this point in CIE L*a*b* coordinates.  An XcmsFailure return value
usually indicates that the given chroma is beyond maximum for the given hue
angle.

The XcmsCIELabQueryMaxLC function, given a hue angle, finds the point of maximum
chroma displayable by the screen.  It returns this point in CIE L*a*b*
coordinates.

The XcmsCIELabQueryMinL function, given a hue angle and chroma, finds the point
of minimum lightness (L*) displayable by the screen.  It returns this point in
CIE L*a*b* coordinates.  An XcmsFailure return value usually indicates that the
given chroma is beyond maximum for the given hue angle.













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XcmsCIELuvQueryMaxC(3), XcmsTekHVCQueryMaxC(3), XcmsQueryBlack(3)
Xlib − C Language X Interface