XcmsCIELabQueryMax(3X11) XLIB FUNCTIONS XcmsCIELabQueryMax(3X11)
NAME
XcmsCIELabQueryMaxC, XcmsCIELabQueryMaxL, XcmsCIELabQuer-
yMaxLC, XcmsCIELabQueryMinL - obtain the CIE L*a*b* coordi-
nates
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). or
minimum lightness (MinL) or hue angle (MaxLC)
color_return
Returns the CIE L*a*b* coordinates of maximum
chroma (MaxC and MaxLC), maximum lightnes (MaxL),
displayable by the screen for the given hue angle
and lightness (MaxC), hue angle and chroma (MaxL
and MinL),. The white point associated with the
returned color specification is the Screen White
Point. The value returned in the pixel member is
undefined. or minimum lightness (MinL)
hue_angle Specifies the hue angle (in degrees) at which to
find maximum chroma (MaxC and MaxLC), maximum
lightness (MaxL),.
L_star Specifies the lightness (L*) at which to find max-
imum 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
XFree86 Version 4.5.0 1
XcmsCIELabQueryMax(3X11) XLIB FUNCTIONS XcmsCIELabQueryMax(3X11)
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*) display-
able 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
XFree86 Version 4.5.0 2