feat(editor): the work of the editor sessions not committed yet, as it stands: a curve traced on from the end of the diverging track of a switch goes on at its radius with no transition in, or from a straight right at the switch (alignment start_held, fit_going_on), the plan taking an end adjoining R 10 km or more for a straight; the switches and slips laid into curves, slid along them and laid alone on one straight (frame_path, switch slide); the route plan reading curves going on from the tracks adjoining, the kept designs taken or forgotten; the orthophoto and terrain model settings, downloads and layers, the tracks onto the terrain; the curvature of a path in the plan (bezier::plan_curvature); the Polish texts of all of it. Not built as committed

utilities/Globals.h

@@ -175,7 +175,6 @@ struct global_settings {
     bool EditorOrtho{ false };
     float EditorOrthoExtent{ 150.f };
     int EditorOrthoTracks{ 0 }; // the railway in the top view of the editor: 0 whole, 1 without the ballast, 2 the rails alone
-    bool EditorOrthoMap{ false }; // the top view of the editor far out shows the base map in place of the ground, which isn't drawn then
     GLint iMaxTextureSize{ 4096 }; // maksymalny rozmiar tekstury
     GLint iMaxCabTextureSize{ 4096 }; // largest allowed texture in vehicle cab
     int iMultisampling{ 2 }; // tryb antyaliasingu: 0=brak,1=2px,2=4px,3=8px,4=16px

utilities/utilities.cpp

@@ -73,6 +73,24 @@ std::filesystem::path user_config_path(const std::string &filename)
 	return {}; // env var missing → caller falls back to CWD-relative filename
 }
 
+std::filesystem::path user_cache_path(const std::string &filename)
+{
+	namespace fs = std::filesystem;
+#if defined(_WIN32)
+	if (const char *local = std::getenv("LOCALAPPDATA"))
+		return fs::path(local) / "MaSzyna" / "cache" / filename;
+#elif defined(__APPLE__)
+	if (const char *home = std::getenv("HOME"))
+		return fs::path(home) / "Library" / "Caches" / "MaSzyna" / filename;
+#else
+	if (const char *cache = std::getenv("XDG_CACHE_HOME"); cache != nullptr && *cache != '\0')
+		return fs::path(cache) / "MaSzyna" / filename;
+	if (const char *home = std::getenv("HOME"))
+		return fs::path(home) / ".cache" / "MaSzyna" / filename;
+#endif
+	return {};
+}
+
 // zwraca różnicę czasu
 // jeśli pierwsza jest aktualna, a druga rozkładowa, to ujemna oznacza opóżnienie
 // na dłuższą metę trzeba uwzględnić datę, jakby opóżnienia miały przekraczać 12h (towarowych)

utilities/utilities.h

@@ -28,6 +28,9 @@ template <typename T> constexpr T sq(T v)
 // returns the per-user config path for `filename` (platform-specific dir),
 // or an empty path if the home/appdata env var is unavailable
 std::filesystem::path user_config_path(const std::string &filename);
+// the per-user path for `filename` among the files kept only to be fetched again faster, which don't roam with the profile:
+// %LOCALAPPDATA%\MaSzyna\cache, ~/Library/Caches/MaSzyna, $XDG_CACHE_HOME/MaSzyna or ~/.cache/MaSzyna; empty as user_config_path
+std::filesystem::path user_cache_path(const std::string &filename);
 
 // TODO: Shouldn't this be in globals?
 namespace paths