X Version 11 (Release 5) XcmsCIELuvQueryMaxC(3X11)
NAME
XcmsCIELuvQueryMaxC, XcmsCIELuvQueryMaxL,
XcmsCIELuvQueryMaxLC, XcmsCIELuvQueryMinL - obtain the CIE
L*u*v* coordinates
SYNTAX
Status XcmsCIELuvQueryMaxC(ccc, hue_angle, L_star,
color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsFloat L_star;
XcmsColor *color_return;
Status XcmsCIELuvQueryMaxL(ccc, hue_angle, chroma,
color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsFloat chroma;
XcmsColor *color_return;
Status XcmsCIELuvQueryMaxLC(ccc, hue_angle, color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsColor *color_return;
Status XcmsCIELuvQueryMinL(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*u*v* 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 (ReleasX
ec5
m)
sCIELuvQueryMaxC(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) or maximum lightness (MaxL).
DESCRIPTION
The XcmsCIELuvQueryMaxC function, given a hue angle and
lightness, finds the point of maximum chroma displayable by
the screen. Note that 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. Note that 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.
The XcmsCIELuvQueryMaxLC function, given a hue angle, finds
the point of maximum chroma displayable by the screen. Note
that 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*)
displayable by the screen. Note that 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
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