XcmsCIELuvQueryMaxC,
XcmsCIELuvQueryMaxL, XcmsCIELuvQueryMaxLC,
XcmsCIELuvQueryMinL − obtain the CIE L*u*v*
coordinates

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).

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 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. 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
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*)
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 maximum
for the given hue angle.