Add man pages for most colour models

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 65 insertions, 0 deletions

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+.TH LIBCOLOUR_CIEXYZ 7 libcolour
+.SH NAME
+LIBCOLOUR_CIEXYZ - CIE 1931 XYZ
+.SH DESCRIPTION
+CIE 1931 XYZ (also known simply as CIE XYZ)
+colours are presented with either of
+.nf
+
+	\fBtypedef struct libcolour_ciexyz_f libcolour_ciexyz_f_t;\fP
+	\fBtypedef struct libcolour_ciexyz_lf libcolour_ciexyz_lf_t;\fP
+	\fBtypedef struct libcolour_ciexyz_llf libcolour_ciexyz_llf_t;\fP
+
+.fi
+These
+.BR struct s
+use
+.BR float ,
+.BR double ,
+and
+.BR long\ double ,
+respecitively, for the values stored in them,
+and are otherwise identical.
+.B struct libcolour_ciexyz_f
+is defined as
+.nf
+
+	\fBstruct libcolour_ciexyz_f {\fP
+		\fBenum libcolour_model\fP \fImodel\fP\fB;\fP
+		\fBfloat\fP \fIX\fP\fB;\fP
+		\fBfloat\fP \fIY\fP\fB;\fP
+		\fBfloat\fP \fIZ\fP\fB;\fP
+	\fB};\fP
+
+.fi
+.I .model
+shall be set to
+.BR LIBCOLOUR_CIEXYZ .
+In
+.BR union\ libcolour_colour_f ,
+.BR union\ libcolour_colour_lf ,
+and
+.BR union\ libcolour_colour_llf ,
+.I .ciexyz
+is used for CIE 1931 XYZ colours.
+.P
+.IR .X ,
+.IR .Y ,
+and
+.I .Z
+hold the unscaled X, Y, and Z values, respectively.
+.P
+CIE 1931 XYZ is additive, since it is linearly
+isomorphic to CIE 1931 RGB, which is additive because
+it is an RGB colour space.
+.P
+This colour model is derived from CIE 1931 RGB and is
+used as an intermediary representation when converting
+between many colour spaces and colour models, making
+it very useful for device independent colour
+representation.
+.SH SEE ALSO
+.BR libcolour (7)
+.SH AUTHORS
+Mattias Andrée
+.RI < maandree@kth.se >