XcmsCIELuvQueryMaxC(3X11)XLIB FUNCTIONS XcmsCIELuvQueryMaxC(3X11)
NAME
XcmsCIELuvQueryMaxC, XcmsCIELuvQueryMaxL, XcmsCIELuvQuer-
yMaxLC, XcmsCIELuvQueryMinL - obtain the CIE L*u*v* coordi-
nates
SYNTAX
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). or
minimum lightness (MinL) or hue angle (MaxLC)
color_return
Returns the CIE L*u*v* 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) or maximum lightness (MaxL).
DESCRIPTION
The XcmsCIELuvQueryMaxC function, given a hue angle and
lightness, finds the point of maximum chroma displayable by
the screen. It returns this point in CIE L*u*v* coordinates.
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
XFree86 Version 4.5.0 1
XcmsCIELuvQueryMaxC(3X11)XLIB FUNCTIONS XcmsCIELuvQueryMaxC(3X11)
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.
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
XFree86 Version 4.5.0 2