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XcmsCIELuvQueryMaxC(3) XLIB FUNCTIONS XcmsCIELuvQueryMaxC(3)
NAME
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 light-
ness (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 specifi-
cation 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 max-
imum 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* coordi-
nates. An XcmsFailure return value usually indicates that the given chroma is beyond max-
imum for the given hue angle.
SEE ALSO
XcmsCIELabQueryMaxC(3), XcmsTekHVCQueryMaxC(3), XcmsQueryBlack(3)
Xlib - C Language X Interface
X Version 11 libX11 1.6.0 XcmsCIELuvQueryMaxC(3) |
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