[latex3-commits] [git/LaTeX3-latex3-fontspec] variable: Add Slant axis (913d5a2)

[Marcel Fabian Krüger]

Repository : https://github.com/latex3/fontspec
On branch  : variable
Link       : https://github.com/latex3/fontspec/commit/913d5a2e8736e871f85440fe0bf738381f25403f

>---------------------------------------------------------------

commit 913d5a2e8736e871f85440fe0bf738381f25403f
Author: Marcel Fabian Krüger <tex at 2krueger.de>
Date:   Fri May 27 22:23:40 2022 +0200

    Add Slant axis


>---------------------------------------------------------------

913d5a2e8736e871f85440fe0bf738381f25403f
 fontspec-code-keyval.dtx |  1 +
 fontspec-doc-featset.tex | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/fontspec-code-keyval.dtx b/fontspec-code-keyval.dtx
index 9b51b6f..dc5b108 100644
--- a/fontspec-code-keyval.dtx
+++ b/fontspec-code-keyval.dtx
@@ -774,6 +774,7 @@
   }
 %</XE>
 %<LU>\@@_define_opentype_variation_axis:nn {Width} {wdth}
+\@@_define_opentype_variation_axis:nn {Slant} {slnt}
 \@@_keys_define_code:nnn {fontspec} {OpticalSize}
 %<*XE>
   {
diff --git a/fontspec-doc-featset.tex b/fontspec-doc-featset.tex
index 202b171..1a8f2ed 100644
--- a/fontspec-doc-featset.tex
+++ b/fontspec-doc-featset.tex
@@ -657,6 +657,21 @@ where the value is a percentage of normal width.
   Condensed                                \\
 \end{Verbatim}
 
+\subsection{Slant} \label{sec:variable-slant}
+Also fonts with a slant axis can be controlled with the \feat{Slant} feature.
+In a standard compliant font the value should specify the clockwise angle in degree
+the glyphs are slanted. Therefore for a typical forward leaning slanted font, a
+negative value should be passed.
+
+Many fonts use this feature in non-standard ways, so you might have to experiment
+a bit with the value.
+\begin{Verbatim}
+  \fontspec{Roboto Flex}[Slant=0]
+  Upright                            \\
+  \fontspec{Roboto Flex}[Slant=-5]
+  Slanted                            \\
+\end{Verbatim}
+
 \subsection{Other axes} \label{sec:variable-raw}
 For OpenType variable fonts, additional axis values can be specified
 if the four letter tag of these axes is known.