XcmsCIELabQueryMax(3X11)  XLIB FUNCTIONS XcmsCIELabQueryMax(3X11)


NAME
       XcmsCIELabQueryMaxC, XcmsCIELabQueryMaxL, XcmsCIELabQuery-
       MaxLC, XcmsCIELabQueryMinL - obtain the CIE L*a*b* coordi-
       nates

SYNTAX
       Status XcmsCIELabQueryMaxC(ccc, hueangle, Lstar,
       colorreturn)
             XcmsCCC ccc;
             XcmsFloat hueangle;
             XcmsFloat Lstar;
             XcmsColor *colorreturn;

       Status XcmsCIELabQueryMaxL(ccc, hueangle, chroma,
       colorreturn)
             XcmsCCC ccc;
             XcmsFloat hueangle;
             XcmsFloat chroma;
             XcmsColor *colorreturn;

       Status XcmsCIELabQueryMaxLC(ccc, hueangle, colorreturn)
             XcmsCCC ccc;
             XcmsFloat hueangle;
             XcmsColor *colorreturn;

       Status XcmsCIELabQueryMinL(ccc, hueangle, chroma,
       colorreturn)
             XcmsCCC ccc;
             XcmsFloat hueangle;
             XcmsFloat chroma;
             XcmsColor *colorreturn;

ARGUMENTS
       ccc       Specifies the CCC.  Note that the CCC's Client
                 White Point and White Point Adjustment proce-
                 dures are ignored.

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

       colorreturn
                 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 light-
                 ness (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.

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



X Version 11                Release 5                           1

XcmsCIELabQueryMax(3X11)  XLIB FUNCTIONS XcmsCIELabQueryMax(3X11)


       Lstar    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* coor-
       dinates.

       The XcmsCIELabQueryMaxL function, given a hue angle and
       chroma, finds the point in CIE L*a*b* color space of maxi-
       mum 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*) dis-
       playable 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), Xcm-
       sQueryBlack(3X11)
       Xlib - C Language X Interface


























X Version 11                Release 5                           2