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XcmsCIELabQueryMaxC, XcmsCIELabQueryMaxL, XcmsCIELabQueryMaxLC, XcmsCIELabQueryMinL - obtain the CIE L*a*b* coordinates
Status
XcmsCIELabQueryMaxC(ccc, hue_angle, L_star, color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsFloat L_star;
XcmsColor *color_return;
Status
XcmsCIELabQueryMaxL(ccc, hue_angle, chroma, color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsFloat chroma;
XcmsColor *color_return;
Status
XcmsCIELabQueryMaxLC(ccc, hue_angle, color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsColor *color_return;
Status
XcmsCIELabQueryMinL(ccc, hue_angle, chroma, color_return)
XcmsCCC ccc;
XcmsFloat hue_angle;
XcmsFloat chroma;
XcmsColor *color_return;
Specifies the CCC. Note that the CCC's Client White Point
and White Point Adjustment procedures are ignored.
Specifies the chroma at which to find maximum lightness (MaxL)
or minimum lightness (MinL). or minimum lightness (MinL) or hue angle (MaxLC)
Returns the CIE L*a*b* 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.
Specifies the hue angle (in degrees) at which to find maximum
chroma (MaxC and MaxLC), maximum lightness (MaxL), or minimum lightness (MinL).
Specifies the lightness (L*) at which to find maximum chroma
(MaxC).
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 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*) displayable 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.
XcmsCIELuvQueryMaxC(3X11), XcmsTekHVCQueryMaxC(3X11), XcmsQueryBlack(3X11)
Xlib -- C Language X Interface