From ded7bde82c0a77c8cbb1c9c7f59d55c25e650dd8 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 23 Jul 2022 15:37:56 +0200
Subject: [PATCH] rv::presentation:: latex packages changeable

---
 pattern2.cpp              |  6 +++---
 rogueviz/presentation.cpp | 20 +++++++++++++++-----
 2 files changed, 18 insertions(+), 8 deletions(-)

diff --git a/pattern2.cpp b/pattern2.cpp
index 8c5db16b..b7a5c0d7 100644
--- a/pattern2.cpp
+++ b/pattern2.cpp
@@ -2849,7 +2849,7 @@ EX namespace linepatterns {
         }
       )
     );
-  linepattern patTriRings("triangle grid: rings", 0xFFFFFF00, always_available, 
+  EX linepattern patTriRings = linepattern("triangle grid: rings", 0xFFFFFF00, always_available, 
     ALLCELLS(
       forCellIdEx(c2, i, c) {
         if(S3 == 4) c2 = (cellwalker(c, i) + wstep + 1).cpeek();
@@ -2858,14 +2858,14 @@ EX namespace linepatterns {
         }
       )
     );
-  linepattern patTriTree("triangle grid: tree edges", 0xFFFFFF00, always_available,
+  EX linepattern patTriTree = linepattern("triangle grid: tree edges", 0xFFFFFF00, always_available,
     ALLCELLS(
       cell *parent = ts::right_parent(c, curr_dist);
       if(gmatrix.count(parent)) 
         gridlinef(V, C0, V * currentmap->adj(c, neighborId(c, parent)), C0, col, 2 + vid.linequality);
       )
     );
-  linepattern patTriOther("triangle grid: other edges", 0xFFFFFF00, always_available, 
+  EX linepattern patTriOther = linepattern("triangle grid: other edges", 0xFFFFFF00, always_available, 
     ALLCELLS(
       cell *parent = ts::right_parent(c, curr_dist);
       forCellIdEx(c2, i, c) if(curr_dist(c2) < curr_dist(c) && c2 != parent)
diff --git a/rogueviz/presentation.cpp b/rogueviz/presentation.cpp
index fd7b1c7d..0c9c8a4e 100644
--- a/rogueviz/presentation.cpp
+++ b/rogueviz/presentation.cpp
@@ -154,9 +154,21 @@ void show_picture(presmode mode, string s) {
     });
   }
 
+string latex_packages =
+  "\\usepackage{amsmath}\n"
+  "\\usepackage{amssymb}\n"
+  "\\usepackage{amsfonts}\n"
+  "\\usepackage{varwidth}\n"
+  "\\usepackage{amsfonts}\n"
+  "\\usepackage{enumitem}\n"
+  "\\usepackage{color}\n"
+  "\\usepackage{graphicx}\n"
+  "\\definecolor{remph}{rgb}{0,0.5,0}\n"
+  "\\renewcommand{\\labelitemi}{{\\color{remph}$\\blacktriangleright$}}\n";
+
 string gen_latex(presmode mode, string s, int res, flagtype flags) {
   unsigned hash = 0;
-  for(char c: s) hash = (hash << 3) ^ hash ^ c ^ flags;
+  for(char c: latex_packages + s) hash = (hash << 3) ^ hash ^ c ^ flags;
   string filename = format("latex-cache/%08X.png", hash);
   if(mode == pmStartAll) {
     if(!file_exists(filename)) {
@@ -164,14 +176,12 @@ string gen_latex(presmode mode, string s, int res, flagtype flags) {
       FILE *f = fopen("latex-cache/rogueviz-latex.tex", "w");
       fprintf(f,
         "\\documentclass[border=2pt]{standalone}\n"
-        "\\usepackage{amsmath}\n"
-        "\\usepackage{varwidth}\n"
-        "\\usepackage{color}\n"
+        "%s"
         "\\begin{document}\n"
         "\\begin{varwidth}{\\linewidth}\n"
         "%s"
         "\\end{varwidth}\n"
-        "\\end{document}\n", s.c_str());
+        "\\end{document}\n", latex_packages.c_str(), s.c_str());
       fclose(f);
       hr::ignore(system("cd latex-cache; pdflatex rogueviz-latex.tex"));
       string pngline =