[latex3-commits] [git/LaTeX3-latex3-latex3] master: l3draw: Add \draw_transform_reset: (1c81725)

[Joseph Wright]

Repository : https://github.com/latex3/latex3
On branch  : master
Link       : https://github.com/latex3/latex3/commit/1c81725b82ad04f9ec18e6df9f214a7f3acc876a

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

commit 1c81725b82ad04f9ec18e6df9f214a7f3acc876a
Author: Joseph Wright <joseph.wright at morningstar2.co.uk>
Date:   Sun Feb 11 11:41:58 2018 +0000

    l3draw: Add \draw_transform_reset:


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

1c81725b82ad04f9ec18e6df9f214a7f3acc876a
 l3trial/l3draw/l3draw-scopes.dtx       |    1 +
 l3trial/l3draw/l3draw-transforms.dtx   |   18 ++++++++++++++++++
 l3trial/l3draw/l3draw.dtx              |    6 ++++++
 l3trial/l3draw/testfiles/m3draw002.lvt |    8 ++++++++
 l3trial/l3draw/testfiles/m3draw002.tlg |    7 +++++++
 5 files changed, 40 insertions(+)

diff --git a/l3trial/l3draw/l3draw-scopes.dtx b/l3trial/l3draw/l3draw-scopes.dtx
index a4ab03f..44a889e 100644
--- a/l3trial/l3draw/l3draw-scopes.dtx
+++ b/l3trial/l3draw/l3draw-scopes.dtx
@@ -106,6 +106,7 @@
       \dim_gzero:N \g_@@_ymax_dim
       \dim_gzero:N \g_@@_ymin_dim
       \bool_set_true:N \l_@@_update_bb_bool
+      \draw_transform_reset:
   }
 \cs_new_protected:Npn \draw_end:
   {
diff --git a/l3trial/l3draw/l3draw-transforms.dtx b/l3trial/l3draw/l3draw-transforms.dtx
index 3798229..bf92f1e 100644
--- a/l3trial/l3draw/l3draw-transforms.dtx
+++ b/l3trial/l3draw/l3draw-transforms.dtx
@@ -83,6 +83,24 @@
 %    \end{macrocode}
 % \end{variable}
 %
+% \begin{macro}{\draw_transform_reset:}
+%   Fast resetting.
+%    \begin{macrocode}
+\cs_new_protected:Npn \draw_transform_reset:
+  {
+    \fp_set:Nn \l_@@_transformcm_aa_fp { 1}
+    \fp_zero:N \l_@@_transformcm_ab_fp
+    \fp_zero:N \l_@@_transformcm_ba_fp
+    \fp_set:Nn \l_@@_transformcm_bb_fp { 1 }
+    \dim_zero:N \l_@@_transformcm_xshift_dim
+    \dim_zero:N \l_@@_transformcm_yshift_dim
+  }
+\draw_transform_reset:
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
 % \begin{macro}{\draw_transform_set:nnnnn}
 % \begin{macro}{\@@_transform_set:nnnnnn}
 %   Setting the transform matrix is straight-forward, with just a bit
diff --git a/l3trial/l3draw/l3draw.dtx b/l3trial/l3draw/l3draw.dtx
index 8514ec5..18c62a2 100644
--- a/l3trial/l3draw/l3draw.dtx
+++ b/l3trial/l3draw/l3draw.dtx
@@ -158,6 +158,12 @@
 %
 % \subsection{Transformations}
 %
+% \begin{function}{\draw_transform_reset:}
+%   \begin{syntax}
+%     \cs{draw_transform_reset:}
+%   \end{syntax}
+% \end{function
+%
 % \begin{function}{\draw_transform_add:nnnnn}
 %   \begin{syntax}
 %     \cs{draw_transform_add:nnnnn}
diff --git a/l3trial/l3draw/testfiles/m3draw002.lvt b/l3trial/l3draw/testfiles/m3draw002.lvt
index bdc2cc9..04b7e16 100644
--- a/l3trial/l3draw/testfiles/m3draw002.lvt
+++ b/l3trial/l3draw/testfiles/m3draw002.lvt
@@ -44,4 +44,12 @@
     \exp_args:Nx \tl_show:n { \draw_point_transform:n { \l_tmpa_tl } }
   }
 
+\TEST { \draw_transform_reset: }
+  {
+    \draw_transform_set:nnnnn { 1 } { 0 } { 1 } { 1 } { { 10pt } { 0pt } }
+    \draw_transform_reset:
+    \exp_args:Nx \tl_show:n { \draw_point_transform:n { { 1 } { 1 } } }
+  }
+
+
 \END
diff --git a/l3trial/l3draw/testfiles/m3draw002.tlg b/l3trial/l3draw/testfiles/m3draw002.tlg
index 7088c36..8eb764c 100644
--- a/l3trial/l3draw/testfiles/m3draw002.tlg
+++ b/l3trial/l3draw/testfiles/m3draw002.tlg
@@ -36,3 +36,10 @@ l. ...  }
 <recently read> }
 l. ...  }
 ============================================================
+============================================================
+TEST 4: \draw_transform_reset: 
+============================================================
+> {1pt}{1pt}.
+<recently read> }
+l. ...  }
+============================================================