Manual Pages for UNIX Operating System command usage for man XcmsCIELuvQueryMaxL

XLIB FUNCTIONS                          XcmsCIELuvQueryMaxC(3x11)



NAME
     XcmsCIELuvQueryMaxC, XcmsCIELuvQueryMaxL, XcmsCIELuvQuer-
     yMaxLC, XcmsCIELuvQueryMinL - obtain the CIE L*u*v* coordi-
     nates

SYNTAX
     cc [ flag... ] file... -lX11 [ library... ]

     Status XcmsCIELuvQueryMaxC(XcmsCCC ccc, XcmsFloat hue_angle,
          XcmsFloat L_star, XcmsColor *color_return);

     Status XcmsCIELuvQueryMaxL(XcmsCCC ccc, XcmsFloat hue_angle,
          XcmsFloat chroma, XcmsColor *color_return);

     Status XcmsCIELuvQueryMaxLC(XcmsCCC ccc, XcmsFloat
          hue_angle, XcmsColor *color_return);

     Status XcmsCIELuvQueryMinL(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*u*v* 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 max-
               imum chroma (MaxC) or maximum lightness (MaxL).

DESCRIPTION
     The XcmsCIELuvQueryMaxC function, given a hue angle and
     lightness, finds the point of maximum chroma displayable by



X Version 11        Last change: libX11 1.3.5                   1






XLIB FUNCTIONS                          XcmsCIELuvQueryMaxC(3x11)



     the screen.  It returns this point in CIE L*u*v* coordi-
     nates.

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

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

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

SEE ALSO
     XcmsCIELabQueryMaxC(3x11), XcmsTekHVCQueryMaxC(3x11),
     XcmsQueryBlack(3x11)
     Xlib - C Language X Interface


ATTRIBUTES
     See attributes(5) for descriptions of the following attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | x11/library/libx11          |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | See XInitThreads(3X11)      |
    |_____________________________|_____________________________|















X Version 11        Last change: libX11 1.3.5                   2