200 lines
4.6 KiB
Plaintext
200 lines
4.6 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ny0
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.TH XcmsCIELuvQueryMaxC 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XcmsCIELuvQueryMaxC, XcmsCIELuvQueryMaxL, XcmsCIELuvQueryMaxLC, XcmsCIELuvQueryMinL \- obtain the CIE L*u*v* coordinates
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.SH SYNTAX
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Status XcmsCIELuvQueryMaxC\^(\^\fIccc\fP\^, \fIhue_angle\fP\^, \fIL_star\fP\^, \fIcolor_return\fP\^)
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.br
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XcmsCCC \fIccc\fP\^;
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.br
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XcmsFloat \fIhue_angle\fP\^;
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.br
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XcmsFloat \fIL_star\fP\^;
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.br
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XcmsColor *\fIcolor_return\fP\^;
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.LP
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Status XcmsCIELuvQueryMaxL\^(\^\fIccc\fP\^, \fIhue_angle\fP\^, \fIchroma\fP\^, \fIcolor_return\fP\^)
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.br
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XcmsCCC \fIccc\fP\^;
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.br
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XcmsFloat \fIhue_angle\fP\^;
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.br
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XcmsFloat \fIchroma\fP\^;
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.br
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XcmsColor *\fIcolor_return\fP\^;
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.LP
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Status XcmsCIELuvQueryMaxLC\^(\^\fIccc\fP\^, \fIhue_angle\fP\^, \fIcolor_return\fP\^)
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.br
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XcmsCCC \fIccc\fP\^;
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.br
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XcmsFloat \fIhue_angle\fP\^;
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.br
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XcmsColor *\fIcolor_return\fP\^;
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.LP
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Status XcmsCIELuvQueryMinL\^(\^\fIccc\fP\^, \fIhue_angle\fP\^, \fIchroma\fP\^, \fIcolor_return\fP\^)
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.br
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XcmsCCC \fIccc\fP\^;
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.br
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XcmsFloat \fIhue_angle\fP\^;
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.br
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XcmsFloat \fIchroma\fP\^;
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.br
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XcmsColor *\fIcolor_return\fP\^;
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.SH ARGUMENTS
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.IP \fIccc\fP 1i
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Specifies the CCC.
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Note that the CCC's Client White Point and White Point Adjustment procedures
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are ignored.
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.ds Ch maximum lightness (MaxL) or minimum lightness (MinL)
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.IP \fIchroma\fP 1i
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Specifies the chroma at which to find \*(Ch.
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.ds Lc maximum chroma (MaxC and MaxLC), maximum lightnes (MaxL), \
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or minimum lightness (MinL)
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.ds lC hue angle and lightness (MaxC), hue angle and chroma (MaxL and MinL), \
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or hue angle (MaxLC)
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.IP \fIcolor_return\fP 1i
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Returns the CIE L*u*v* coordinates of \*(Lc
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displayable by the screen for the given \*(lC.
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The white point associated with the returned
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color specification is the Screen White Point.
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The value returned in the pixel member is undefined.
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.ds Ha maximum chroma (MaxC and MaxLC), maximum lightness (MaxL), \
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or minimum lightness (MinL)
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.IP \fIhue_angle\fP 1i
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Specifies the hue angle in degrees at which to find \*(Ha.
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.ds Ls maximum chroma (MaxC) or maximum lightness (MaxL)
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.IP \fIL_star\fP 1i
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Specifies the lightness (L*) at which to find \*(Ls.
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.SH DESCRIPTION
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The
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.ZN XcmsCIELuvQueryMaxC
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function, given a hue angle and lightness,
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finds the point of maximum chroma displayable by the screen.
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Note that it returns this point in CIE L*u*v* coordinates.
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.LP
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The
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.ZN XcmsCIELuvQueryMaxL
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function, given a hue angle and chroma,
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finds the point in CIE L*u*v* color space of maximum
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lightness (L*) displayable by the screen.
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Note that it returns this point in CIE L*u*v* coordinates.
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An
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.ZN XcmsFailure
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return value usually indicates that the given chroma
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is beyond maximum for the given hue angle.
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.LP
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The
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.ZN XcmsCIELuvQueryMaxLC
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function, given a hue angle,
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finds the point of maximum chroma displayable by the screen.
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Note that it returns this point in CIE L*u*v* coordinates.
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.LP
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The
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.ZN XcmsCIELuvQueryMinL
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function, given a hue angle and chroma,
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finds the point of minimum lightness (L*) displayable by the screen.
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Note that it returns this point in CIE L*u*v* coordinates.
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An
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.ZN XcmsFailure
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return value usually indicates that the given chroma
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is beyond maximum for the given hue angle.
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.SH "SEE ALSO"
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XcmsCIELabQueryMaxC(3X11),
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XcmsTekHVCQueryMaxC(3X11),
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XcmsQueryBlack(3X11)
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.br
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\fI\*(xL\fP
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