From dbc200043493d69d76e7c3e3177d8d7f64e9ae62 Mon Sep 17 00:00:00 2001
From: "Zed A. Shaw" <zed.shaw@gmail.com>
Date: Tue, 8 Jul 2025 00:55:45 -0400
Subject: [PATCH] Started a map icon gen tool that will load the fonts and
 create tile sprites for everything I use.

---
 meson.build       |  7 ++++++
 tools/icongen.cpp | 62 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 tools/icongen.cpp

diff --git a/meson.build b/meson.build
index bbd938c..a2ee37e 100644
--- a/meson.build
+++ b/meson.build
@@ -169,6 +169,13 @@ executable('zedcaster',
   override_options: exe_defaults,
   dependencies: dependencies)
 
+executable('icongen',
+  [ 'dbc.cpp', 'tools/icongen.cpp' ],
+  cpp_args: cpp_args,
+  link_args: link_args,
+  override_options: exe_defaults,
+  dependencies: dependencies)
+
 executable('fragviewer',
   [ 'textures.cpp', 'config.cpp',
     'dbc.cpp', 'tools/fragviewer.cpp' ],
diff --git a/tools/icongen.cpp b/tools/icongen.cpp
new file mode 100644
index 0000000..0070f67
--- /dev/null
+++ b/tools/icongen.cpp
@@ -0,0 +1,62 @@
+#include <fmt/core.h>
+#include "dbc.hpp"
+#include <SFML/Graphics.hpp>
+#include <SFML/Graphics/RenderWindow.hpp>
+#include "constants.hpp"
+
+int main() {
+  unsigned int font_size = 30;
+  sf::Vector2u size{32, 32};
+
+  sf::RenderTexture render{size};
+  render.setSmooth(false);
+
+  sf::Font font{FONT_FILE_NAME};
+  font.setSmooth(false);
+
+  wchar_t display_char = 3848;
+  std::wstring content{display_char};
+  sf::Text icon{font, content, font_size};
+
+  icon.setFillColor({0, 0, 0, 255});
+  render.draw(icon);
+  render.clear({0,0,0,0});
+
+  // fit the glyph in our box height
+  auto glyph = font.getGlyph(content[0], font_size, false);
+
+  while(glyph.textureRect.size.y < int(size.y)-1) {
+    font_size++;
+    glyph = font.getGlyph(content[0], font_size, false);
+  }
+
+  auto font_texture = font.getTexture(font_size);
+  sf::Sprite sprite{font_texture, glyph.textureRect};
+  auto t_size = glyph.textureRect.size;
+
+  dbc::check(int(size.x - t_size.x) > 0, "font too big on x");
+  dbc::check(int(size.y - t_size.y) > 0, "font too big on y");
+
+  sf::Vector2f center{
+    (float(size.x) - float(t_size.x)) / 2.0f,
+    (float(size.y) - float(t_size.y)) / 2.0f};
+
+  sf::Vector2f scale{float(size.x) / float(t_size.x), float(size.y) / float(t_size.y)};
+
+  fmt::println("scale={},{}; t_size={},{}; size={},{}",
+      scale.x, scale.y, t_size.x, t_size.y, size.x, size.y);
+
+  sprite.setScale(scale);
+
+  sprite.setPosition({0,0});
+  sprite.setColor({0, 0, 0, 255});
+
+  render.draw(sprite);
+  render.display();
+  sf::Image out_img = render.getTexture().copyToImage();
+
+  bool worked = out_img.saveToFile("./screenshot.png");
+  dbc::check(worked, "Failed to write screenshot.png");
+
+  return 0;
+}