XcmsCIELabQueryMaxC(3)

NAME

       XcmsCIELabQueryMaxC, XcmsCIELabQueryMaxL, XcmsCIELabQueryMaxLC, Xcm-
       sCIELabQueryMinL - obtain the CIE L*a*b* coordinates

SYNTAX

       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);

ARGUMENTS

       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 lightnes (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).

DESCRIPTION

       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*) dis-
       playable by the screen.  It returns this point in CIE L*a*b* coordi-
       nates.  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.

SEE ALSO

       XcmsCIELuvQueryMaxC(3X11), XcmsTekHVCQueryMaxC(3X11), XcmsQuery-
       Black(3X11)
       Xlib - C Language X Interface

X Version 11                     libX11 1.1.1            XcmsCIELabQueryMax(3)