XcmsCIELabQueryMaxL.3X11.z(3X11)



     X Version 11 (Release 5)                 XcmsCIELabQueryMax(3X11)



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

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

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

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

          Status XcmsCIELabQueryMinL(ccc, hue_angle, chroma,
          color_return)
                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



     Licensed material--property of copyright holder(s)         Page 1



                         X Version 11 (ReleaseX5
c)
msCIELabQueryMax(3X11)



                    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*) 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.

     SEE ALSO
          XcmsCIELuvQueryMaxC(3X11), XcmsTekHVCQueryMaxC(3X11),
          XcmsQueryBlack(3X11)
          Xlib - C Language X Interface





















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