Remove using namespace std from json_diff.hpp

The directive sat at global scope in a header that DeviceManager.hpp
includes, so most of the GUI compiled with all of std in the global
namespace. 42 files had come to rely on it, mostly for string, vector
and unordered_map, four of them for the ""sv and ""ms literals.

Those sites are qualified. GCodeViewer.cpp spelled the type as
std::vector<::string>, which only resolved through the directive.

scripts/clang_tidy_diff.py

@@ -8,6 +8,9 @@ include) fails wherever the error is. Headers are compiled on their own, and
 fail only on errors in their changed lines. Deleting an #include also fails
 on every use, changed or not, that now lacks the header it provided.
 
+With -- --fix, clang-tidy adds the missing includes, on those lines only, and
+each file it changed is checked again so that only what remains is reported.
+
 The checks come from .clang-tidy at the repository root. The compile database
 must come from a configure with SLIC3R_PCH=OFF, or the precompiled header hides
 missing includes.
@@ -102,9 +105,10 @@ def is_checked(path):
 
 def changed_files(merge_base):
     # Against the working tree, so a local run covers uncommitted edits too.
-    # core.quotePath=false keeps a non-ASCII path unquoted, so parse_diff sees its b/ prefix.
+    # core.quotePath=false keeps a non-ASCII path unquoted, and the explicit prefixes
+    # override diff.noprefix and diff.mnemonicPrefix, so parse_diff sees its b/ prefix.
     diff = subprocess.run(["git", "-c", "core.quotePath=false", "diff", "-U0", "--no-color", "--no-ext-diff",
-                           "--diff-filter=AMR", merge_base],
+                           "--src-prefix=a/", "--dst-prefix=b/", "--diff-filter=AMR", merge_base],
                           check=True, capture_output=True, **UTF8).stdout
     return {path: change for path, change in parse_diff(diff).items() if is_checked(path)}
 
@@ -201,13 +205,19 @@ def errors_alone_at(revision, clang_tidy, build_dir, path):
 
 
 def check_file(clang_tidy, build_dir, merge_base, path, change, extra_args):
-    """Run clang-tidy on one file and return (failed, output, failing diagnostics)."""
+    """Run clang-tidy on one file and return (failed, output, failing diagnostics, fixed)."""
+    fixing = any(arg.startswith("--fix") for arg in extra_args)
+    if fixing:
+        with open(path, "rb") as f:
+            before = f.read()
     # A deleted include can orphan uses on unchanged lines, so such a file is
-    # checked whole and the findings narrowed here. --fix keeps the line filter
-    # so it never rewrites unrelated code.
-    whole = bool(change.removed_includes) and not extra_args
+    # checked whole and the findings narrowed here. --fix keeps a line filter so
+    # it never rewrites unrelated code, which for such a file means a second,
+    # fixing run limited to the lines the first one found wanting.
+    whole = bool(change.removed_includes)
     returncode, output, diagnostics = run_clang_tidy(clang_tidy, build_dir, path,
-                                                     None if whole else change.lines, extra_args)
+                                                     None if whole else change.lines,
+                                                     [] if whole else extra_args)
     real = os.path.realpath(path)
 
     def introduced(d):
@@ -223,14 +233,25 @@ def check_file(clang_tidy, build_dir, merge_base, path, change, extra_args):
         if errors and change.removed_includes:
             with open(path, encoding="utf-8") as f:
                 text = f.read()
-            before = errors_alone_at(merge_base, clang_tidy, build_dir, path)
+            before_sites = errors_alone_at(merge_base, clang_tidy, build_dir, path)
             failing += [d for d in errors if d not in failing
-                        and (error_sites([d], text) - before)]
-        return bool(failing), output, failing
-    if whole:
+                        and (error_sites([d], text) - before_sites)]
+        failed = bool(failing)
+    elif whole:
         failing = [d for d in diagnostics if d.is_compile_error or introduced(d)]
-        return bool(failing), output, failing
-    return returncode != 0, output, diagnostics
+        failed = bool(failing)
+    else:
+        failing, failed = diagnostics, returncode != 0
+    if not fixing:
+        return failed, output, failing, False
+    if whole and failing:
+        lines = change.lines + [[d.line, d.line] for d in failing if os.path.realpath(d.file) == real]
+        run_clang_tidy(clang_tidy, build_dir, path, lines, extra_args)
+    with open(path, "rb") as f:
+        if f.read() == before:
+            return failed, output, failing, False
+    # Checked again, so what is reported is what the fixes left.
+    return check_file(clang_tidy, build_dir, merge_base, path, change, [])[:3] + (True,)
 
 
 def main():
@@ -263,11 +284,14 @@ def main():
     annotate = os.environ.get("GITHUB_ACTIONS") == "true"
     root = os.getcwd() + os.sep
     failed = []
+    fixed = []
     with ThreadPoolExecutor(max_workers=args.jobs) as pool:
         jobs = {path: pool.submit(check_file, args.clang_tidy, args.build_dir, merge_base, path, change, args.extra_args)
                 for path, change in todo}
         for path, job in jobs.items():
-            file_failed, output, diagnostics = job.result()
+            file_failed, output, diagnostics, file_fixed = job.result()
+            if file_fixed:
+                fixed.append(path)
             if not file_failed:
                 continue
             failed.append(path)
@@ -282,6 +306,13 @@ def main():
             if len(diagnostics) > MAX_REPORTED:
                 print(f"... and {len(diagnostics) - MAX_REPORTED} more")
 
+    if fixed:
+        print(f"\nAdded includes to {len(fixed)} file(s):")
+        for path in fixed:
+            print(f"    {path}")
+    if failed and fixed:
+        print(f"\nclang-tidy still fails on {len(failed)} file(s); the findings above are what --fix could not add.")
+        return 1
     if failed:
         print(f"\nclang-tidy failed on {len(failed)} file(s). Add the includes it names, or apply its "
               "suggestions locally with scripts/run_clang_tidy.sh --fix (scripts\\run_clang_tidy.ps1 -Fix on Windows).")

scripts/disable_validation.entitlements

@@ -4,10 +4,5 @@
 <dict>
     <key>com.apple.security.cs.disable-library-validation</key>
     <true/>
-    <!-- The Bambu network plug-in's code protector rewrites one of its own signed code pages
-         after loading. Under the hardened runtime macOS kills the process when that page is
-         paged back in; this lets it run, as Bambu Studio's signature does. -->
-    <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
-    <true/>
 </dict>
 </plist>

scripts/run_clang_tidy.sh

@@ -6,8 +6,9 @@
 #   scripts/run_clang_tidy.sh --fix      also add the missing includes it names
 #
 # It configures a separate build directory (build-tidy) without the precompiled
-# header, installs the pinned clang-tidy into a virtual environment inside it, and
-# runs scripts/clang_tidy_diff.py the way CI does. Uncommitted changes are checked too.
+# header, uses the clang-tidy on your system or installs the pinned one into a
+# virtual environment inside it, and runs scripts/clang_tidy_diff.py the way CI
+# does. Uncommitted changes are checked too.
 
 set -euo pipefail
 
@@ -23,7 +24,8 @@ Usage: scripts/run_clang_tidy.sh [options]
                        deps/build/<arch> on macOS)
   -j, --jobs N         parallel clang-tidy runs (default: all cores)
       --fix            apply clang-tidy's fixes (adds the missing includes)
-  -y, --yes            install missing tools without asking
+  -y, --yes            install missing tools without asking; another clang-tidy
+                       version found on the system is then not offered
   -h, --help           show this help
 EOF
 }
@@ -136,12 +138,38 @@ REQUIREMENTS="$ROOT/scripts/clang_tidy_requirements.txt"
 PINNED=$(sed -n 's/^clang-tidy==//p' "$REQUIREMENTS")
 VENV="$BUILD_DIR/clang-tidy-venv"
 
-if [ -n "${CLANG_TIDY:-}" ]; then
+is_pinned() {
+    [ -x "$1" ] && "$1" --version 2>/dev/null | grep -q "version $PINNED"
+}
+
+CLANG_TIDY="${CLANG_TIDY:-}"
+if [ -n "$CLANG_TIDY" ]; then
     # Set by the caller: use it as is.
-    :
+    is_pinned "$CLANG_TIDY" || echo "Warning: $CLANG_TIDY is not clang-tidy $PINNED, so results may differ from CI." >&2
 else
+    # One already on the system comes first: the pinned version outright, another
+    # version if the user accepts the difference. The pinned version is installed
+    # into a virtual environment otherwise.
+    INSTALLED=""
+    for candidate in $(command -v clang-tidy "clang-tidy-${PINNED%%.*}" || true) \
+                     "/usr/lib/llvm-${PINNED%%.*}/bin/clang-tidy" \
+                     "$(brew --prefix llvm 2>/dev/null || true)/bin/clang-tidy"; do
+        if is_pinned "$candidate"; then
+            CLANG_TIDY="$candidate"
+            break
+        fi
+        [ -z "$INSTALLED" ] && [ -x "$candidate" ] && INSTALLED="$candidate"
+    done
+    if [ -z "$CLANG_TIDY" ] && [ -n "$INSTALLED" ] && [ "$YES" = 0 ] && ! is_pinned "$VENV/bin/clang-tidy"; then
+        echo "Found $INSTALLED, which is $("$INSTALLED" --version | sed -n 's/.*version \([0-9.]*\).*/\1/p' | head -n 1), not the $PINNED CI uses, so results may differ slightly."
+        if ask "Use it anyway?"; then
+            CLANG_TIDY="$INSTALLED"
+        fi
+    fi
+fi
+if [ -z "$CLANG_TIDY" ]; then
     CLANG_TIDY="$VENV/bin/clang-tidy"
-    if [ ! -x "$CLANG_TIDY" ] || ! "$CLANG_TIDY" --version | grep -q "version $PINNED"; then
+    if ! is_pinned "$CLANG_TIDY"; then
         if ask "clang-tidy $PINNED (the version CI uses) is not installed. Install it into $VENV?"; then
             mkdir -p "$BUILD_DIR"
             if ! python3 -m venv "$VENV"; then
@@ -158,9 +186,6 @@ else
         fi
     fi
 fi
-if ! "$CLANG_TIDY" --version | grep -q "version $PINNED"; then
-    echo "Warning: $CLANG_TIDY is not clang-tidy $PINNED, so results may differ from CI." >&2
-fi
 
 # --- Dependencies -------------------------------------------------------------
 
@@ -217,7 +242,12 @@ cmake --build "$BUILD_DIR" --target git_commit_hash_header >/dev/null
 
 if [ -z "$BASE" ]; then
     REMOTE=$(git remote -v | awk '/github\.com[:\/]OrcaSlicer\/OrcaSlicer(\.git)? \(fetch\)/ { print $1; exit }')
-    REMOTE="${REMOTE:-origin}"
+    if [ -z "$REMOTE" ]; then
+        # Against a fork's main that already has the commits, nothing is checked.
+        echo "Warning: no remote points at github.com/OrcaSlicer/OrcaSlicer, so this compares against origin/main." >&2
+        echo "If origin is your fork, add the upstream remote (git remote add upstream https://github.com/OrcaSlicer/OrcaSlicer.git) or pass --base." >&2
+        REMOTE=origin
+    fi
     if [ "$FETCH" = 1 ]; then
         git fetch --quiet "$REMOTE" main
     fi

scripts/tests/test_clang_tidy_diff.py

@@ -155,6 +155,8 @@ class TestSubprocessCalls(unittest.TestCase):
         diff = "+++ b/src/libslic3r/Über.cpp\n@@ -1,0 +2 @@\n+// 打印\n"
         files, call, _ = self.run_patched(clang_tidy_diff.changed_files, "base", stdout=diff)
         self.assertIn("core.quotePath=false", call.args[0])
+        # Whatever diff.noprefix or diff.mnemonicPrefix a user has set.
+        self.assertIn("--dst-prefix=b/", call.args[0])
         self.assertEqual(call.kwargs["encoding"], "utf-8")
         self.assertEqual(files["src/libslic3r/Über.cpp"].lines, [[2, 2]])
 
@@ -167,5 +169,60 @@ class TestSubprocessCalls(unittest.TestCase):
         self.assertEqual(call.kwargs["encoding"], "utf-8")
 
 
+class TestCheckFileFix(unittest.TestCase):
+    """check_file with -- --fix: what clang-tidy is run on, and what is reported afterwards."""
+
+    def setUp(self):
+        self.dir = tempfile.TemporaryDirectory()
+        self.addCleanup(self.dir.cleanup)
+        self.path = os.path.join(self.dir.name, "Color.cpp")
+        with open(self.path, "w") as f:
+            f.write("int x;\n")
+
+    def finding(self, line, include=""):
+        return clang_tidy_diff.Diagnostic(self.path, line, 1, "error",
+                                          'no header providing "x" is directly included [misc-include-cleaner]', include)
+
+    def check(self, change, results, fix_writes=None):
+        """Run check_file with run_clang_tidy answering from `results` in turn; the --fix run
+        rewrites the file with `fix_writes` when given. Returns (result, calls)."""
+        calls = []
+
+        def run(clang_tidy, build_dir, path, lines, extra_args):
+            calls.append((lines, extra_args))
+            if "--fix" in extra_args and fix_writes is not None:
+                with open(path, "w") as f:
+                    f.write(fix_writes)
+            return results[len(calls) - 1]
+
+        with mock.patch.object(clang_tidy_diff, "run_clang_tidy", side_effect=run):
+            result = clang_tidy_diff.check_file("clang-tidy", "build", "base", self.path, change, ["--fix"])
+        return result, calls
+
+    def test_a_deleted_include_is_fixed_on_the_lines_it_orphaned_only(self):
+        change = clang_tidy_diff.FileChange(lines=[[4, 4]], removed_includes={"libslic3r/Point.hpp"})
+        orphaned = self.finding(50, "<libslic3r/Point.hpp>")
+        unrelated = self.finding(60, "<vector>")
+        (failed, _, failing, fixed), calls = self.check(
+            change, [(1, "", [orphaned, unrelated]), (1, "", [orphaned]), (0, "", [])], fix_writes="#include <libslic3r/Point.hpp>\n")
+        self.assertEqual(calls, [(None, []), ([[4, 4], [50, 50]], ["--fix"]), (None, [])])
+        self.assertEqual((failed, failing, fixed), (False, [], True))
+
+    def test_a_file_the_fix_did_not_change_keeps_its_findings(self):
+        change = clang_tidy_diff.FileChange(lines=[[4, 4]])
+        error = clang_tidy_diff.Diagnostic(self.path, 4, 1, "error", "unknown type name 'Foo' [clang-diagnostic-error]")
+        (failed, _, failing, fixed), calls = self.check(change, [(1, "", [error])])
+        self.assertEqual(calls, [([[4, 4]], ["--fix"])])
+        self.assertEqual((failed, failing, fixed), (True, [error], False))
+
+    def test_a_changed_file_is_checked_again_and_reports_what_is_left(self):
+        change = clang_tidy_diff.FileChange(lines=[[4, 4]])
+        error = clang_tidy_diff.Diagnostic(self.path, 4, 1, "error", "unknown type name 'Foo' [clang-diagnostic-error]")
+        (failed, _, failing, fixed), calls = self.check(
+            change, [(1, "", [self.finding(4, "<vector>"), error]), (1, "", [error])], fix_writes="#include <vector>\n")
+        self.assertEqual(calls, [([[4, 4]], ["--fix"]), ([[4, 4]], [])])
+        self.assertEqual((failed, failing, fixed), (True, [error], True))
+
+
 if __name__ == "__main__":
     unittest.main()

src/OrcaSlicer.cpp

@@ -3524,7 +3524,7 @@ int CLI::run(int argc, char **argv)
             ConfigOptionStrings *curr_variant_opt = m_print_config.option<ConfigOptionStrings>("filament_extruder_variant");
             if (!curr_variant_opt) {
                 curr_variant_opt = m_print_config.option<ConfigOptionStrings>("filament_extruder_variant", true);
-                std::vector<string>& filament_variants = curr_variant_opt->values;
+                std::vector<std::string>& filament_variants = curr_variant_opt->values;
                 filament_variants.resize(filament_count, get_extruder_variant_string(etDirectDrive, nvtStandard));
             }
             const ConfigOptionStrings *new_variant_opt = dynamic_cast<const ConfigOptionStrings*>(config.option("filament_extruder_variant", true));
@@ -6554,7 +6554,7 @@ int CLI::run(int argc, char **argv)
                                                 std::vector<int> result_filaments;
                                                 //result_filaments.reserve(conflict_filaments.size());
                                                 std::set_intersection(conflict_filament_vector.begin(), conflict_filament_vector.end(), unprintable_filament_vec[index].begin(),
-                                                    unprintable_filament_vec[index].end(), insert_iterator<vector<int>>(result_filaments, result_filaments.begin()));
+                                                    unprintable_filament_vec[index].end(), std::insert_iterator<std::vector<int>>(result_filaments, result_filaments.begin()));
                                                 conflict_filament_vector = result_filaments;
                                             }
                                         }

src/dev-utils/platform/osx/entitlements.plist

@@ -5,10 +5,5 @@
   <!-- for dynamic loading of libraries without signature validation. Used for 3dconnection drivers.-->
   <key>com.apple.security.cs.disable-library-validation</key>  
   <true/>
-  <!-- The Bambu network plug-in's code protector rewrites one of its own signed code pages
-       after loading. Under the hardened runtime macOS kills the process when that page is
-       paged back in; this lets it run, as Bambu Studio's signature does. -->
-  <key>com.apple.security.cs.allow-unsigned-executable-memory</key>
-  <true/>
 </dict>
 </plist>

src/libslic3r/Fill/FillSpiralInset.cpp

@@ -352,6 +352,16 @@ void FillSpiralInset::_fill_surface_single(const FillParams& params,
     assert(params.use_arachne);
     assert(this->print_config != nullptr && this->print_object_config != nullptr);
 
+    // Internal solid infill must not add Arachne's standalone thin walls: one of those walls can
+    // become the extra centre point after the spiral has finished. Top and bottom surfaces keep
+    // Arachne, including the centre plug handled by generate_spiral_insets().
+    if (params.extrusion_role == erSolidInfill) {
+        Polylines polylines;
+        this->_fill_surface_single(params, thickness_layers, direction, expolygon, polylines);
+        append(thick_polylines_out, to_thick_polylines(std::move(polylines), scaled<coord_t>(this->spacing)));
+        return;
+    }
+
     // Only a solid surface is worth the variable width walls; a sparse one falls back to plain loops.
     if (params.density <= 0.9999f || params.dont_adjust) {
         Polylines polylines;

src/libslic3r/GCode/GCodeProcessor.cpp

@@ -751,6 +751,50 @@ template<typename T>
     }
 }
 
+namespace {
+// Writes G-code to a file in blocks and records in lines_ends the file offset after every '\n'
+class GCodeFileWriter
+{
+public:
+    GCodeFileWriter(FilePtr& out, const std::string& out_path, std::vector<size_t>& lines_ends, const char* error_message)
+        : m_out(out), m_out_path(out_path), m_lines_ends(lines_ends), m_error_message(error_message)
+    {}
+    ~GCodeFileWriter() { assert(m_buffer.empty() || std::uncaught_exceptions() > 0); }
+
+    void append(std::string_view text)
+    {
+        const size_t text_pos = m_file_pos + m_buffer.size();
+        for (size_t i = text.find('\n'); i != std::string_view::npos; i = text.find('\n', i + 1))
+            m_lines_ends.emplace_back(text_pos + i + 1);
+        m_buffer += text;
+        if (m_buffer.size() >= GCodeProcessor::Output_Block_Size)
+            flush();
+    }
+
+    void flush()
+    {
+        if (m_buffer.empty())
+            return;
+        fwrite(m_buffer.data(), 1, m_buffer.size(), m_out.f);
+        if (ferror(m_out.f)) {
+            m_out.close();
+            boost::nowide::remove(m_out_path.c_str());
+            throw Slic3r::RuntimeError(m_error_message);
+        }
+        m_file_pos += m_buffer.size();
+        m_buffer.clear();
+    }
+
+private:
+    FilePtr&             m_out;
+    const std::string&   m_out_path;
+    std::vector<size_t>& m_lines_ends;
+    const char*          m_error_message;
+    std::string          m_buffer;
+    size_t               m_file_pos{0};
+};
+} // namespace
+
 // Helper class to modify and export gcode to file
 class ExportLines
 {
@@ -765,16 +809,6 @@ public:
     enum class EWriteType { BySize, ByTime };
 
 private:
-    static void update_lines_ends_and_out_file_pos(const std::string& out_string, std::vector<size_t>& lines_ends, size_t* out_file_pos)
-    {
-        for (size_t i = 0; i < out_string.size(); ++i) {
-            if (out_string[i] == '\n')
-                lines_ends.emplace_back((out_file_pos != nullptr) ? *out_file_pos + i + 1 : i + 1);
-        }
-        if (out_file_pos != nullptr)
-            *out_file_pos += out_string.size();
-    }
-
     struct LineData
     {
         std::string                                                                        line;
@@ -814,12 +848,14 @@ private:
     EWriteType m_write_type{EWriteType::BySize};
     // Time machines containing g1 times cache
     const std::array<GCodeProcessor::TimeMachine, static_cast<size_t>(PrintEstimatedStatistics::ETimeMode::Count)>& m_machines;
+    // Output file writer
+    GCodeFileWriter& m_writer;
     // Current time
     std::array<float, static_cast<size_t>(PrintEstimatedStatistics::ETimeMode::Count)> m_times{0.0f, 0.0f};
-    // Current size in bytes
+    // Current size of the cache in bytes
     size_t m_size{0};
 
-    // gcode lines cache
+    // gcode lines cache, used only when writing by time
     std::deque<LineData> m_lines;
     size_t               m_added_lines_counter{0};
     // map of gcode line ids from original to final
@@ -827,16 +863,16 @@ private:
     std::vector<std::pair<size_t, size_t>> m_gcode_lines_map;
 
     size_t m_times_cache_id{0};
-    size_t m_out_file_pos{0};
 
 public:
-    ExportLines(EWriteType type, const std::array<GCodeProcessor::TimeMachine, static_cast<size_t>(PrintEstimatedStatistics::ETimeMode::Count)>& machines)
+    ExportLines(EWriteType type, const std::array<GCodeProcessor::TimeMachine, static_cast<size_t>(PrintEstimatedStatistics::ETimeMode::Count)>& machines, GCodeFileWriter& writer)
 #ifndef NDEBUG
         : m_statistics(*this)
         , m_write_type(type)
-        , m_machines(machines){}
+        , m_machines(machines)
+        , m_writer(writer){}
 #else
-        : m_write_type(type), m_machines(machines)
+        : m_write_type(type), m_machines(machines), m_writer(writer)
     {}
 #endif // NDEBUG
 
@@ -890,11 +926,14 @@ public:
         if (line.empty())
             return;
 
-        m_lines.push_back({line, m_times});
+        if (m_write_type == EWriteType::ByTime) {
+            m_lines.push_back({line, m_times});
 #ifndef NDEBUG
-        m_statistics.add_line(line.length());
+            m_statistics.add_line(line.length());
 #endif // NDEBUG
-        m_size += line.length();
+            m_size += line.length();
+        } else
+            m_writer.append(line);
         ++m_added_lines_counter;
         if (!ignore_from_move) {
             assert(!m_gcode_lines_map.empty());
@@ -960,65 +999,35 @@ public:
         }
     }
 
-    // write to file:
-    // m_write_type == EWriteType::ByTime - all lines older than m_time - backtrace_time
-    // m_write_type == EWriteType::BySize - all lines if current size is greater than 65535 bytes
-    void write(FilePtr& out, float backtrace_time, GCodeProcessorResult& result, const std::string& out_path)
+    // when writing by time, pass the cached lines older than m_times[Normal] - backtrace_time to the writer
+    void write(float backtrace_time)
     {
-        if (m_lines.empty())
+        if (m_write_type != EWriteType::ByTime)
             return;
 
-        // collect lines to write into a single string
-        std::string out_string;
-        if (!m_lines.empty()) {
-            if (m_write_type == EWriteType::ByTime) {
-                while (m_lines.front().times[Normal] < m_times[Normal] - backtrace_time) {
-                    const LineData& data = m_lines.front();
-                    out_string += data.line;
-                    m_size -= data.line.length();
-                    m_lines.pop_front();
+        while (!m_lines.empty() && m_lines.front().times[Normal] < m_times[Normal] - backtrace_time) {
+            const LineData& data = m_lines.front();
+            m_writer.append(data.line);
+            m_size -= data.line.length();
+            m_lines.pop_front();
 #ifndef NDEBUG
-                    m_statistics.remove_line();
+            m_statistics.remove_line();
 #endif // NDEBUG
-                }
-            } else {
-                if (m_size > 65535) {
-                    while (!m_lines.empty()) {
-                        out_string += m_lines.front().line;
-                        m_lines.pop_front();
-                    }
-                    m_size = 0;
-#ifndef NDEBUG
-                    m_statistics.remove_all_lines();
-#endif // NDEBUG
-                }
-            }
-        }
-
-        {
-            write_to_file(out, out_string, result, out_path);
-            update_lines_ends_and_out_file_pos(out_string, result.lines_ends, &m_out_file_pos);
         }
     }
 
-    // flush the current content of the cache to file
-    void flush(FilePtr& out, GCodeProcessorResult& result, const std::string& out_path)
+    // flush the current content of the cache and the writer to file
+    void flush()
     {
-        // collect lines to flush into a single string
-        std::string out_string;
         while (!m_lines.empty()) {
-            out_string += m_lines.front().line;
+            m_writer.append(m_lines.front().line);
             m_lines.pop_front();
         }
         m_size = 0;
 #ifndef NDEBUG
         m_statistics.remove_all_lines();
 #endif // NDEBUG
-
-        {
-            write_to_file(out, out_string, result, out_path);
-            update_lines_ends_and_out_file_pos(out_string, result.lines_ends, &m_out_file_pos);
-        }
+        m_writer.flush();
     }
 
     void synchronize_moves(GCodeProcessorResult& result) const
@@ -1051,20 +1060,7 @@ public:
 
     size_t get_size() const { return m_size; }
 
-private:
-    void write_to_file(FilePtr& out, const std::string& out_string, GCodeProcessorResult& result, const std::string& out_path)
-    {
-        if (!out_string.empty()) {
-            if (true) {
-                fwrite((const void*) out_string.c_str(), 1, out_string.length(), out.f);
-                if (ferror(out.f)) {
-                    out.close();
-                    boost::nowide::remove(out_path.c_str());
-                    throw Slic3r::RuntimeError("GCode processor post process export failed.\nIs the disk full?");
-                }
-            }
-        }
-    }
+    void reserve(size_t lines_count) { m_gcode_lines_map.reserve(lines_count); }
 };
 
 void GCodeProcessor::run_post_process()
@@ -1160,8 +1156,13 @@ void GCodeProcessor::run_post_process()
         last_exported_stop[i] = time_in_minutes(m_time_processor.machines[i].time);
     }
 
+    m_result.lines_ends.clear();
+    // m_result.lines_ends.emplace_back(std::vector<size_t>());
+    GCodeFileWriter writer(out, out_path, m_result.lines_ends, "GCode processor post process export failed.\nIs the disk full?");
     ExportLines export_line(m_result.backtrace_enabled ? ExportLines::EWriteType::ByTime : ExportLines::EWriteType::BySize,
-        m_time_processor.machines);
+        m_time_processor.machines, writer);
+    // The line map holds an entry for each line of the file, and the first pass counted them
+    export_line.reserve(m_line_id);
 
     // replace placeholder lines with the proper final value
     // gcode_line is in/out parameter, to reduce expensive memory allocation
@@ -1535,9 +1536,6 @@ void GCodeProcessor::run_post_process()
         }
     };
 
-    m_result.lines_ends.clear();
-    // m_result.lines_ends.emplace_back(std::vector<size_t>());
-
     // Orca: freshly collect SKIPPABLE ranges each post-process pass. The ranges are stored on the
     // member (rather than a local) so the injection pass can consume them, hence the clear here to
     // avoid stale ranges on re-invocation.
@@ -1802,7 +1800,7 @@ void GCodeProcessor::run_post_process()
 
                     if (!gcode_line.empty())
                         export_line.append_line(gcode_line);
-                    export_line.write(out, 1.1f * max_backtrace_time, m_result, out_path);
+                    export_line.write(1.1f * max_backtrace_time);
                     gcode_line.clear();
                 }
             }
@@ -1844,7 +1842,7 @@ void GCodeProcessor::run_post_process()
         }
     }
 
-    export_line.flush(out, m_result, out_path);
+    export_line.flush();
 
     out.close();
     in.close();
@@ -1992,31 +1990,13 @@ void GCodeProcessor::run_second_pass_injection()
     // The rewrite may shift byte positions (once the injector inserts lines), so rebuild lines_ends from scratch.
     // With an empty map the scanned '\n' offsets reproduce the current lines_ends exactly.
     m_result.lines_ends.clear();
-    size_t out_file_pos = 0;
-
-    auto write_out = [&out, &out_path, this, &out_file_pos](std::string& str) {
-        if (str.empty())
-            return;
-        fwrite((const void*) str.c_str(), 1, str.length(), out.f);
-        if (ferror(out.f)) {
-            out.close();
-            boost::nowide::remove(out_path.c_str());
-            throw Slic3r::RuntimeError(std::string("GCode processor pre-heat injection pass failed.\nIs the disk full?\n"));
-        }
-        for (size_t i = 0; i < str.size(); ++i) {
-            if (str[i] == '\n')
-                m_result.lines_ends.emplace_back(out_file_pos + i + 1);
-        }
-        out_file_pos += str.size();
-        str.clear();
-    };
+    GCodeFileWriter writer(out, out_path, m_result.lines_ends, "GCode processor pre-heat injection pass failed.\nIs the disk full?\n");
 
     // Orca: read/split lines with EOL-preserving semantics (keep the original \r and \n bytes, and
     // synthesize no trailing newline). This is required for the empty-map identity: normalizing every
     // line ending to "\n" would not be byte-identical if the finished file used \r\n or lacked a
     // final newline.
     std::string gcode_line;
-    std::string export_buffer;
     unsigned int line_id = 0;
     auto op_it = inserted_operation_lines.begin();
     std::vector<char> buffer(65536 * 10, 0);
@@ -2058,16 +2038,14 @@ void GCodeProcessor::run_second_pass_injection()
                     }
                     ++op_it;
                 }
-                export_buffer += gcode_line;
+                writer.append(gcode_line);
                 gcode_line.clear();
-                if (export_buffer.length() >= 65536)
-                    write_out(export_buffer);
             }
         }
         if (eof)
             break;
     }
-    write_out(export_buffer);
+    writer.flush();
 
     out.close();
     in.close();

src/libslic3r/GCode/GCodeProcessor.hpp

@@ -491,6 +491,9 @@ class Print;
         static const std::string VFlush_End_Tag;
         static const std::string External_Purge_Tag;
     public:
+        // Size of the blocks the post-processing passes write the G-code in
+        static constexpr size_t Output_Block_Size = 65536;
+
         // Orca: SKIPPABLE region tags, stored as static strings (the FLUSH idiom above) rather than
         // a CustomETags/CustomTags array. Public so the emission sites (WipeTower / change_filament
         // path) can reference them single-sourced.

src/libslic3r/PerimeterGenerator.cpp

@@ -759,6 +759,59 @@ static void clip_inner_walls_over_top(std::vector<Arachne::VariableWidthLines> &
     }
 }
 
+// ORCA: only_one_wall_top - widest bead of the given walls.
+static coord_t widest_bead(const std::vector<Arachne::VariableWidthLines> &walls)
+{
+    coord_t widest = 0;
+    for (const Arachne::VariableWidthLines &group : walls)
+        for (const Arachne::ExtrusionLine &el : group)
+            for (const Arachne::ExtrusionJunction &j : el.junctions)
+                widest = std::max(widest, j.w);
+    return widest;
+}
+
+// ORCA: only_one_wall_top - length of the walls running further than tolerance from the reference walls, outside the
+// excluded area.
+static double length_off_reference(const std::vector<Arachne::VariableWidthLines> &walls, const Arachne::VariableWidthLines &reference,
+                                   const ExPolygons &excluded, coord_t tolerance)
+{
+    auto append_centerlines = [](const Arachne::VariableWidthLines &lines, Polylines &out) {
+        for (const Arachne::ExtrusionLine &el : lines) {
+            if (el.junctions.size() < 2)
+                continue;
+            Polyline &centerline = out.emplace_back();
+            centerline.points.reserve(el.junctions.size());
+            for (const Arachne::ExtrusionJunction &j : el.junctions)
+                centerline.points.emplace_back(j.p);
+        }
+    };
+    Polylines wall_centerlines;
+    Polylines reference_centerlines;
+    for (const Arachne::VariableWidthLines &group : walls)
+        append_centerlines(group, wall_centerlines);
+    append_centerlines(reference, reference_centerlines);
+
+    Polylines off_reference = diff_pl(wall_centerlines, offset(reference_centerlines, float(tolerance)));
+    if (! excluded.empty())
+        off_reference = diff_pl(off_reference, excluded);
+    return total_length(off_reference);
+}
+
+// ORCA: only_one_wall_top - area covered by the given walls at their local widths.
+static Polygons walls_footprint(const Arachne::VariableWidthLines &walls)
+{
+    Polygons footprint;
+    for (const Arachne::ExtrusionLine &el : walls)
+        for (size_t i = 1; i < el.junctions.size(); ++ i) {
+            const Arachne::ExtrusionJunction &a     = el.junctions[i - 1];
+            const Arachne::ExtrusionJunction &b     = el.junctions[i];
+            const coord_t                     width = std::max(a.w, b.w);
+            if (width > 0)
+                append(footprint, offset(Polyline(a.p, b.p), float(width) / 2.f));
+        }
+    return union_(footprint);
+}
+
 void PerimeterGenerator::split_top_surfaces(const ExPolygons &orig_polygons, ExPolygons &top_fills,
                                             ExPolygons &non_top_polygons, ExPolygons &fill_clip) const {
     // other perimeters
@@ -2546,44 +2599,90 @@ void PerimeterGenerator::process_arachne()
         if (inner_loop_number >= 0) {
             assert(upper_slices != nullptr);
 
-            // Infill contour bounding box.
-            BoundingBox infill_contour_bbox = get_extents(infill_contour);
-            infill_contour_bbox.offset(SCALED_EPSILON);
-            
             coord_t perimeter_width = this->perimeter_flow.scaled_width();
 
-            // Get top ExPolygons from current infill contour.
-            Polygons upper_slices_clipped;
-            if (object_config->interface_shells) {
-                auto upper_slicer_same_region = to_expolygons(this->upper_slices_same_region->surfaces);
-                upper_slices_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(upper_slicer_same_region, infill_contour_bbox);
-            } else
-                upper_slices_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(*upper_slices, infill_contour_bbox);
+            // Filter out areas that are too thin and expand top surface polygons a bit to hide the wall line.
+            // ORCA: skip if the top surface area is smaller than "min_width_top_surface"
+            const float top_surface_min_width = std::max<float>(float(ext_perimeter_spacing) / 4.f + scaled<float>(0.00001), float(scale_(config->min_width_top_surface.get_abs_value(unscale_(perimeter_width)))) / 4.f);
 
-            top_expolygons = diff_ex(infill_contour, upper_slices_clipped);
+            // Get top ExPolygons from the given contour. uncovered reports whether the upper layer leaves any of the
+            // contour uncovered, before bridges and too thin areas are filtered out.
+            auto get_top_expolygons = [&](const ExPolygons &contour, bool &uncovered) {
+                // Contour bounding box.
+                BoundingBox contour_bbox = get_extents(contour);
+                contour_bbox.offset(SCALED_EPSILON);
+
+                Polygons upper_slices_clipped;
+                if (object_config->interface_shells) {
+                    auto upper_slicer_same_region = to_expolygons(this->upper_slices_same_region->surfaces);
+                    upper_slices_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(upper_slicer_same_region, contour_bbox);
+                } else
+                    upper_slices_clipped = ClipperUtils::clip_clipper_polygons_with_subject_bbox(*upper_slices, contour_bbox);
+
+                ExPolygons top = diff_ex(contour, upper_slices_clipped);
+                uncovered      = !top.empty();
+                if (top.empty())
+                    return top;
 
-            if (!top_expolygons.empty()) {
                 if (lower_slices != nullptr) {
                     const float      bridge_offset          = float(std::max<coord_t>(ext_perimeter_spacing, perimeter_width));
-                    const Polygons   lower_slices_clipped   = ClipperUtils::clip_clipper_polygons_with_subject_bbox(*lower_slices, infill_contour_bbox);
-                    const ExPolygons current_slices_bridges = offset_ex(diff_ex(top_expolygons, lower_slices_clipped), bridge_offset);
+                    const Polygons   lower_slices_clipped   = ClipperUtils::clip_clipper_polygons_with_subject_bbox(*lower_slices, contour_bbox);
+                    const ExPolygons current_slices_bridges = offset_ex(diff_ex(top, lower_slices_clipped), bridge_offset);
 
                     // Remove bridges from top surface polygons.
-                    top_expolygons = diff_ex(top_expolygons, current_slices_bridges);
+                    top = diff_ex(top, current_slices_bridges);
                 }
 
-                // Filter out areas that are too thin and expand top surface polygons a bit to hide the wall line.
-                // ORCA: skip if the top surface area is smaller than "min_width_top_surface"
-                const float top_surface_min_width = std::max<float>(float(ext_perimeter_spacing) / 4.f + scaled<float>(0.00001), float(scale_(config->min_width_top_surface.get_abs_value(unscale_(perimeter_width)))) / 4.f);
                 // Shrink the polygon to remove the small areas, then expand it back out plus a maragin to hide the wall line a little.
                 // ORCA: Expand the polygon with half the perimeter width in addition to the contracted amount,
                 // not the full perimeter width as PS does, to enable thin lettering to print on the top surface without nozzle collisions
                 // due to thin lines being generated
-                top_expolygons = offset2_ex(top_expolygons, -top_surface_min_width, top_surface_min_width + float(perimeter_width * 0.85));
+                top = offset2_ex(top, -top_surface_min_width, top_surface_min_width + float(perimeter_width * 0.85));
 
                 // Get final top ExPolygons (bridges were excluded above, so they stay walled).
-                top_expolygons = intersection_ex(top_expolygons, infill_contour);
+                return intersection_ex(top, contour);
+            };
 
+            // Walls with the full count, as generated when the single perimeter feature is disabled. Generated on first use.
+            std::vector<Arachne::VariableWidthLines> full_perimeters;
+            Polygons                                 full_inner_contour;
+            bool                                     full_perimeters_generated = false;
+            auto generate_full_perimeters = [&]() {
+                if (full_perimeters_generated)
+                    return;
+                Arachne::WallToolPaths full_tool_paths(last_p, bead_width_0, perimeter_spacing, coord_t(inner_loop_number + 2), wall_0_inset, layer_height, input_params_tmp);
+                full_perimeters           = full_tool_paths.getToolPaths();
+                full_inner_contour        = full_tool_paths.getInnerContour();
+                full_perimeters_generated = true;
+            };
+
+            // ORCA: the single wall pass allows Arachne 2 beads across a wall, so it fills a wall narrower than 3 outer wall
+            // widths by widening both, where the full pass adds a middle bead. Over the top surface that is the intent;
+            // anywhere else it leaves no room for the inner walls. When the single wall pass's outer walls run away from
+            // the full pass's outside the top surface, take the full pass's outer walls and the area inside them instead.
+            // Walls closer than outer_wall_tolerance count as the same wall: a widened bead's centerline moves by half
+            // the width added, and only beads widened by more than twice the tolerance are looked for.
+            const coord_t outer_wall_tolerance = bead_width_0 / 10;
+            if (widest_bead(perimeters) > bead_width_0 + 2 * outer_wall_tolerance) {
+                // The single wall pass's inner contour where it widens no bead: inside nominal width outer walls.
+                const ExPolygons nominal_infill_contour = offset_ex(last, -float(bead_width_0 + wall_0_inset));
+                bool             nominal_uncovered      = false;
+                // Grown by an outer wall width to take in the outer walls bordering the top surface.
+                const ExPolygons top_zone = offset_ex(get_top_expolygons(nominal_infill_contour, nominal_uncovered), float(bead_width_0));
+                if (nominal_uncovered) {
+                    generate_full_perimeters();
+                    if (! full_perimeters.empty() && ! full_perimeters.front().empty() &&
+                        length_off_reference(perimeters, full_perimeters.front(), top_zone, outer_wall_tolerance) > double(perimeter_width)) {
+                        perimeters     = { full_perimeters.front() };
+                        infill_contour = diff_ex(nominal_infill_contour, walls_footprint(full_perimeters.front()), ApplySafetyOffset::Yes);
+                    }
+                }
+            }
+
+            bool uncovered = false;
+            top_expolygons = get_top_expolygons(infill_contour, uncovered);
+
+            if (uncovered) {
                 // ORCA: onion the real region (inside the outer wall) so the remaining walls follow the actual
                 // geometry, then cut away the parts over the top surface. Re-onioning the non-top complement
                 // instead - the fallback when there is no top fill - walls the top/non-top interface and rings
@@ -2612,11 +2711,11 @@ void PerimeterGenerator::process_arachne()
                 perimeters.insert(perimeters.end(), inner_perimeters.begin(), inner_perimeters.end());
                 infill_contour = union_ex(top_expolygons, inner_wall_tool_paths.getInnerContour());
             } else {
-                // There is no top surface ExPolygon, so we call Arachne again with parameters
-                // like when the single perimeter feature is disabled.
-                Arachne::WallToolPaths no_single_perimeter_tool_paths(last_p, bead_width_0, perimeter_spacing, coord_t(inner_loop_number + 2), wall_0_inset, layer_height, input_params_tmp);
-                perimeters     = no_single_perimeter_tool_paths.getToolPaths();
-                infill_contour = union_ex(no_single_perimeter_tool_paths.getInnerContour());
+                // There is no top surface ExPolygon, so use the walls generated like when the single perimeter
+                // feature is disabled.
+                generate_full_perimeters();
+                perimeters     = std::move(full_perimeters);
+                infill_contour = union_ex(full_inner_contour);
             }
         }
         //PS

src/slic3r/GUI/3DScene.cpp

@@ -1580,7 +1580,7 @@ bool GLVolumeCollection::check_outside_state(const BuildVolume &build_volume, Mo
                     {
                         std::vector<int> result_filaments;
                         //result_filaments.reserve(conflict_filaments.size());
-                        std::set_intersection (conflict_filament_vector.begin(), conflict_filament_vector.end(), unprintable_filament_vec[index].begin(), unprintable_filament_vec[index].end(), insert_iterator<vector<int>>(result_filaments, result_filaments.begin()));
+                        std::set_intersection (conflict_filament_vector.begin(), conflict_filament_vector.end(), unprintable_filament_vec[index].begin(), unprintable_filament_vec[index].end(), std::insert_iterator<std::vector<int>>(result_filaments, result_filaments.begin()));
                         conflict_filament_vector = result_filaments;
                     }
                 }

src/slic3r/GUI/AMSMaterialsSetting.cpp

@@ -974,8 +974,8 @@ bool AMSMaterialsSetting::Show(bool show)
 
 static void _collect_filament_info(const wxString& shown_name,
                                    const Preset& filament,
-                                   unordered_map<wxString, wxString>& query_filament_vendors,
-                                   unordered_map<wxString, wxString>& query_filament_types)
+                                   std::unordered_map<wxString, wxString>& query_filament_vendors,
+                                   std::unordered_map<wxString, wxString>& query_filament_types)
 {
     query_filament_vendors[shown_name] = filament.config.get_filament_vendor();
     query_filament_types[shown_name] = filament.config.get_filament_type();

src/slic3r/GUI/Auxiliary.cpp

@@ -855,14 +855,14 @@ void AuxiliaryPanel::Split(const std::string &src, const std::string &separator,
     dest.clear();
     index = str.find_first_of(separator, start);
     do {
-        if (index != string::npos) {
+        if (index != std::string::npos) {
             substring = str.substr(start, index - start);
             dest.push_back(substring);
             start = index + separator.size();
             index = str.find(separator, start);
-            if (start == string::npos) break;
+            if (start == std::string::npos) break;
         }
-    } while (index != string::npos);
+    } while (index != std::string::npos);
 
     // the last part
     substring = str.substr(start);

src/slic3r/GUI/CalibrationWizardPresetPage.cpp

@@ -1307,7 +1307,7 @@ void CalibrationPresetPage::stripWhiteSpace(std::string& str)
 {
     if (str == "") { return; }
 
-    string::iterator cur_it;
+    std::string::iterator cur_it;
     cur_it = str.begin();
 
     while (cur_it != str.end()) {
@@ -2597,7 +2597,7 @@ void CalibrationPresetPage::update_multi_extruder_filament_combobox(const std::s
     int ams_id_int = 0;
     try {
         if (!ams_id.empty())
-            ams_id_int = stoi(ams_id.c_str());
+            ams_id_int = std::stoi(ams_id.c_str());
 
     } catch (...) {}
 
@@ -2685,7 +2685,7 @@ void CalibrationPresetPage::update_filament_combobox(std::string ams_id)
     int ams_id_int = 0;
     try {
         if (!ams_id.empty())
-            ams_id_int = stoi(ams_id.c_str());
+            ams_id_int = std::stoi(ams_id.c_str());
 
     } catch (...) {}
 

src/slic3r/GUI/CreatePresetsDialog.cpp

@@ -345,7 +345,7 @@ static std::string get_curr_timestmp()
     // return timestampString;
 }
 
-static void get_filament_compatible_printer(Preset* preset, vector<std::string>& printers)
+static void get_filament_compatible_printer(Preset* preset, std::vector<std::string>& printers)
 {
     auto compatible_printers = dynamic_cast<ConfigOptionStrings *>(preset->config.option("compatible_printers"));
     if (compatible_printers == nullptr) return;
@@ -1579,7 +1579,7 @@ void CreateFilamentPresetDialog::sort_printer_by_nozzle(std::vector<std::pair<st
 {
     std::unordered_map<std::string, float> nozzle_diameter = nozzle_diameter_map;
     std::sort(printer_name_to_filament_preset.begin(), printer_name_to_filament_preset.end(),
-              [&nozzle_diameter](const std::pair<string, T> &a, const std::pair<string, T> &b) {
+              [&nozzle_diameter](const std::pair<std::string, T> &a, const std::pair<std::string, T> &b) {
                   size_t nozzle_index_a = a.first.find(" nozzle");
                   size_t nozzle_index_b = b.first.find(" nozzle");
                   if (nozzle_index_a == std::string::npos || nozzle_index_b == std::string::npos) return a.first < b.first;
@@ -3141,7 +3141,7 @@ void CreatePrinterPresetDialog::set_current_visible_printer()
 
 wxArrayString CreatePrinterPresetDialog::printer_preset_sort_with_nozzle_diameter(const VendorProfile &vendor_profile, float nozzle_diameter)
 {
-    std::vector<pair<float, std::string>> preset_sort;
+    std::vector<std::pair<float, std::string>> preset_sort;
 
     auto get_nozzle_size_for_printer_model = [this](const std::string & model_name) -> size_t {
         auto iter = m_printer_name_to_preset.find(model_name);
@@ -4962,7 +4962,7 @@ wxBoxSizer *CreatePresetForPrinterDialog::create_selected_filament_preset_sizer(
 
     m_selected_printer->Bind(wxEVT_COMBOBOX, [this](wxCommandEvent &e) {
         wxString printer_name = m_selected_printer->GetStringSelection();
-        std::unordered_map<string, std::vector<std::shared_ptr<Preset>>>::iterator filament_iter = m_printer_compatible_filament_presets.find(into_u8(printer_name));
+        std::unordered_map<std::string, std::vector<std::shared_ptr<Preset>>>::iterator filament_iter = m_printer_compatible_filament_presets.find(into_u8(printer_name));
         if (m_printer_compatible_filament_presets.end() != filament_iter) {
             filament_choice_to_filament_preset.clear();
             wxArrayString filament_choices;

src/slic3r/GUI/DeviceCore/DevFilaSystem.cpp

@@ -161,7 +161,7 @@ DevAms::~DevAms()
     m_trays.clear();
 }
 
-static unordered_map<int, wxString> s_ams_display_formats = {
+static std::unordered_map<int, wxString> s_ams_display_formats = {
     {DevAms::AMS,      "AMS-%d"},
     {DevAms::AMS_LITE, "AMS Lite-%d"},
     {DevAms::N3F,      "AMS 2 PRO-%d"},

src/slic3r/GUI/DeviceCore/DevFirmware.h

@@ -51,10 +51,10 @@ public:
     bool isCuttingModule() const { return product_name.Contains("Cutting Module"); }
     bool isRotary() const { return product_name.Contains("Rotary"); }// Rotary Attachment
     bool isExtinguishSystem() const { return product_name.Contains("Extinguishing System"); }// Auto Fire Extinguishing System
-    bool isWTM() const { return name.find("wtm") != string::npos; } // nozzle
+    bool isWTM() const { return name.find("wtm") != std::string::npos; } // nozzle
     bool isExhaustFan() const { return product_name.Contains("Exhaust Fan"); }
-    bool isHmshub() const { return product_name.find("Filament Buffer") != string::npos; }
-    bool isFilaTrackSwitch() const { return product_name.find("Filament Track") != string::npos; }
+    bool isHmshub() const { return product_name.find("Filament Buffer") != std::string::npos; }
+    bool isFilaTrackSwitch() const { return product_name.find("Filament Track") != std::string::npos; }
 
 };
 

src/slic3r/GUI/DeviceCore/DevMappingNozzle.cpp

@@ -251,7 +251,7 @@ int DevNozzleMappingCtrl::CtrlGetAutoNozzleMappingV1(Slic3r::GUI::Plater* plater
 
 void DevNozzleMappingCtrl::ParseAutoNozzleMapping(const json& print_jj)
 {
-    if (print_jj.contains("command") && print_jj["command"].get<string>() == "get_auto_nozzle_mapping") {
+    if (print_jj.contains("command") && print_jj["command"].get<std::string>() == "get_auto_nozzle_mapping") {
         if (print_jj.contains("sequence_id") && print_jj["sequence_id"] == m_sequence_id) {
             Clear();
             DevJsonValParser::ParseVal(print_jj, "result", m_result);

src/slic3r/GUI/DeviceCore/DevNozzleSystem.cpp

@@ -424,7 +424,7 @@ void DevNozzleSystem::ClearNozzles()
 
 // ---- parsing ----------------------------------------------------------------------------------------
 
-static unordered_map<string, NozzleFlowType> _str2_nozzle_flow_type = {
+static std::unordered_map<std::string, NozzleFlowType> _str2_nozzle_flow_type = {
     {"S", NozzleFlowType::S_FLOW},
     {"H", NozzleFlowType::H_FLOW},
     {"A", NozzleFlowType::S_FLOW},
@@ -434,7 +434,7 @@ static unordered_map<string, NozzleFlowType> _str2_nozzle_flow_type = {
     {"B", NozzleFlowType::E_FLOW}, // E3D High Flow -> nvtE3DHighFlow
 };
 
-static unordered_map<string, NozzleType> _str2_nozzle_type = {
+static std::unordered_map<std::string, NozzleType> _str2_nozzle_type = {
     {"00", NozzleType::ntStainlessSteel},
     {"01", NozzleType::ntHardenedSteel},
     {"05", NozzleType::ntTungstenCarbide}

src/slic3r/GUI/DeviceErrorDialog.cpp

@@ -368,7 +368,7 @@ wxString DeviceErrorDialog::parse_error_level(int error_code)
     }
 }
 
-static const std::unordered_set<string> s_jump_liveview_error_codes = { "0300-8003", "0300-8002", "0300-800A"};
+static const std::unordered_set<std::string> s_jump_liveview_error_codes = { "0300-8003", "0300-8002", "0300-800A"};
 wxString DeviceErrorDialog::show_error_code(int error_code)
 {
     if (m_error_code == error_code) { return wxEmptyString;}

src/slic3r/GUI/DeviceManager.cpp

@@ -3029,7 +3029,7 @@ int MachineObject::parse_json(std::string tunnel, std::string payload, bool key_
 
         uint64_t t_utc = j.value("t_utc", 0ULL);
         if (t_utc > 0) {
-            last_utc_time = std::chrono::system_clock::time_point(t_utc * 1ms);
+            last_utc_time = std::chrono::system_clock::time_point(t_utc * std::chrono::milliseconds(1));
             std::chrono::system_clock::time_point now = std::chrono::system_clock::now();
             auto millisec_since_epoch = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count();
             auto delay = millisec_since_epoch - t_utc;  //ms
@@ -3103,7 +3103,7 @@ int MachineObject::parse_json(std::string tunnel, std::string payload, bool key_
                         DevFirmwareVersionInfo ver_info;
                         ver_info.name = (*it)["name"].get<std::string>();
                         if ((*it).contains("product_name"))
-                            ver_info.product_name = wxString::FromUTF8((*it)["product_name"].get<string>());
+                            ver_info.product_name = wxString::FromUTF8((*it)["product_name"].get<std::string>());
                         if ((*it).contains("sw_ver"))
                             ver_info.sw_ver = (*it)["sw_ver"].get<std::string>();
                         if ((*it).contains("sw_new_ver"))

src/slic3r/GUI/EditGCodeDialog.cpp

@@ -294,8 +294,8 @@ wxDataViewItem EditGCodeDialog::add_presets_placeholders()
 
 
     // Orca: create subgroups from the pages of the tabs
-    auto init_from_tab = [this, full_config](wxDataViewItem parent, Tab* tab, const set<string>& preset_keys){
-        set extra_keys(preset_keys);
+    auto init_from_tab = [this, full_config](wxDataViewItem parent, Tab* tab, const std::set<std::string>& preset_keys){
+        std::set extra_keys(preset_keys);
         for (const auto& page : tab->m_pages) {
             // ORCA: Pull icons from tabs for subgroups, icons are hidden on tabs
             std::string icon_name = "empty"; // use empty icon if not defined
@@ -549,7 +549,7 @@ void ParamsNode::RefreshSearch(const wxString& search_text)
 
     if (GetEnabledChildren().empty())
         if (auto pos = text.find(search_text); IsParamNode() && pos != wxString::npos) {
-            m_highlight_index = make_unique<pair<int, int>>(pos, search_text.Len());
+            m_highlight_index = make_unique<std::pair<int, int>>(pos, search_text.Len());
             Enable();
         } else {
             Disable();

src/slic3r/GUI/Field.cpp

@@ -702,11 +702,11 @@ void Field::get_value_by_opt_type(wxString& str, const bool check_value/* = true
                 set_value(str, true);
             }
         } else if (m_opt.opt_key == "sparse_infill_rotate_template" || m_opt.opt_key == "solid_infill_rotate_template") {
-            string ustr(str.utf8_string());
+            std::string ustr(str.utf8_string());
             if (!ConfigOptionFloats::validate_string(ustr)) {
-                string      v;
+                std::string v;
                 std::smatch match;
-                string      ps = (m_opt.opt_key == "sparse_infill_rotate_template") ?
+                std::string ps = (m_opt.opt_key == "sparse_infill_rotate_template") ?
                                      u8"[BT][!]?|[#][\\d]+[!]?|[+\\-]?[\\d.]+[%]?[*]?[\\d]*[/NnZz$LlUuQq~^|#]?[+\\-]?[\\d.]*[%#\'\"cm]?[m]?[BT]?[!*]?" :
                                      u8"[#][\\d]+[!]?|[+\\-]?[\\d.]+[%]?[*]?[\\d]*[/NnZz$LlUuQq~^|#]?[+\\-]?[\\d.]*[%#\'\"cm]?[m]?[!*]?";
 
@@ -729,7 +729,7 @@ void Field::get_value_by_opt_type(wxString& str, const bool check_value/* = true
             }
             break;
         } else if (m_opt.opt_key == "extra_solid_infills") {
-            string ustr(str.utf8_string());
+            std::string ustr(str.utf8_string());
             // New rule: accept either interval form (N or N#K) or explicit list (e.g. 1,7,9), with optional quotes.
             const std::regex rx_interval(u8R"(^\s*['"]?\s*\d+\s*(?:#\s*\d*)?\s*['"]?\s*$)");
             // List entries may be plain numbers or number with optional #K count, e.g., 5, 9#2, 18

src/slic3r/GUI/GCodeViewer.cpp

@@ -2816,7 +2816,7 @@ void GCodeViewer::render_all_plates_stats(const std::vector<const GCodeProcessor
         }
         return ret;
     };
-    auto calculate_offsets = [max_width, window_padding](const std::vector<std::pair<std::string, std::vector<::string>>>& title_columns, float extra_size = 0.0f) {
+    auto calculate_offsets = [max_width, window_padding](const std::vector<std::pair<std::string, std::vector<std::string>>>& title_columns, float extra_size = 0.0f) {
         const ImGuiStyle& style = ImGui::GetStyle();
         std::vector<float> offsets;
         offsets.push_back(max_width(title_columns[0].second, title_columns[0].first, extra_size) + 3.0f * style.ItemSpacing.x + style.WindowPadding.x);
@@ -2963,7 +2963,7 @@ void GCodeViewer::render_all_plates_stats(const std::vector<const GCodeProcessor
         }
         ::sprintf(buff, "%.2f", longest_str);
 
-        std::vector<std::pair<std::string, std::vector<::string>>> title_columns;
+        std::vector<std::pair<std::string, std::vector<std::string>>> title_columns;
         if (displayed_columns & ColumnData::Model) {
             title_columns.push_back({ _u8L("Filament"), {""} });
             title_columns.push_back({ _u8L("Model"), {buff} });
@@ -3184,7 +3184,7 @@ void GCodeViewer::render_legend_color_arr_recommen(float window_padding)
     float ams_item_height = 0;
     float filament_group_item_align_width = 0;
     {
-        float three_words_width    = imgui.calc_text_size("ABC"sv).x;
+        float three_words_width    = imgui.calc_text_size(std::string_view("ABC")).x;
         const int line_capacity = 4;
 
         for (const auto& extruder_filaments : {m_left_extruder_filament,m_right_extruder_filament })
@@ -3195,8 +3195,8 @@ void GCodeViewer::render_legend_color_arr_recommen(float window_padding)
                 for (int j = idx; j < extruder_filaments.size() && j < idx + line_capacity; ++j) {
                     auto text_info = imgui.calculate_filament_group_text_size(get_filament_display_type(extruder_filaments[j]));
                     auto text_size = std::get<0>(text_info);
-                    filament_group_item_align_width = max(filament_group_item_align_width, text_size.x);
-                    text_line_height = max(text_line_height, text_size.y);
+                    filament_group_item_align_width = std::max(filament_group_item_align_width, text_size.x);
+                    text_line_height = std::max(text_line_height, text_size.y);
                 }
                 container_height += (three_words_width * 1.3f + text_line_height );
             }
@@ -3589,7 +3589,7 @@ void GCodeViewer::render_legend(float &legend_height, int canvas_width, int canv
         return ret;
     };
 
-    auto calculate_offsets = [max_width, this](const std::vector<std::pair<std::string, std::vector<::string>>>& title_columns, float extra_size = 0.0f) {
+    auto calculate_offsets = [max_width, this](const std::vector<std::pair<std::string, std::vector<std::string>>>& title_columns, float extra_size = 0.0f) {
             const ImGuiStyle& style = ImGui::GetStyle();
             std::vector<float> offsets;
             // ORCA increase spacing for more readable format. Using direct number requires much less code change in here. GetTextLineHeight for additional spacing for icon_size
@@ -4014,7 +4014,7 @@ void GCodeViewer::render_legend(float &legend_height, int canvas_width, int canv
         total_filaments.push_back(buffer);
 
 
-        std::vector<std::pair<std::string, std::vector<::string>>> title_columns;
+        std::vector<std::pair<std::string, std::vector<std::string>>> title_columns;
         if (displayed_columns & ColumnData::Model) {
             title_columns.push_back({ _u8L("Filament"), {""} });
             title_columns.push_back({ _u8L("Model"), total_filaments });

src/slic3r/GUI/GLCanvas3D.cpp

@@ -7970,9 +7970,16 @@ void GLCanvas3D::_render_fps_overlay(int fps) const
     const float margin = 10.0f * get_scale();
     const ImVec2 display_size = ImGui::GetIO().DisplaySize;
     ImVec2 pos(display_size.x - margin, margin);
+    // Last frame's size; zero until the overlay has been shown once.
+    const ImGuiWindow* self = ImGui::FindWindowByName("###fps_overlay");
+    const float left = pos.x - (self != nullptr ? self->Size.x : 0.0f);
     // The Preview legend takes the top-right corner.
     if (const ImGuiWindow* legend = ImGui::FindWindowByName("Legend"); m_canvas_type == ECanvasType::CanvasPreview && legend != nullptr && legend->Active)
         pos = ImVec2(legend->Pos.x - margin, legend->Pos.y);
+    // The toolbar row can reach the corner on a narrow canvas; stack the overlay below it then.
+    else if (m_main_toolbar.is_enabled() &&
+             get_main_toolbar_offset() + m_main_toolbar.get_width() + m_separator_toolbar.get_width() + m_gizmos.get_scaled_total_width() + m_assemble_view_toolbar.get_width() > left)
+        pos.y = std::max(m_main_toolbar.get_height(), m_gizmos.get_scaled_total_height()) + margin;
     ImGui::SetNextWindowPos(pos, ImGuiCond_Always, ImVec2(1.0f, 0.0f));
     ImGui::SetNextWindowBgAlpha(0.35f);
     ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 8.0f * get_scale());
@@ -10553,7 +10560,7 @@ float GLCanvas3D::_render_assembly_tooltip_button(ImGuiWrapper* imgui_wrapper) c
 
     float same_line_width = button_size.x * 1.8; // with an space size
     ImGui::SameLine(same_line_width);
-    same_line_width = imgui_wrapper->calc_text_size("|"sv).x + same_line_width + imgui_wrapper->calc_text_size("  "sv).x;
+    same_line_width = imgui_wrapper->calc_text_size(std::string_view("|")).x + same_line_width + imgui_wrapper->calc_text_size(std::string_view("  ")).x;
     imgui_wrapper->text_colored(ImGuiWrapper::COL_ACTIVE, "|");
     ImGui::SameLine(same_line_width);
 
@@ -10579,7 +10586,7 @@ void GLCanvas3D::_render_assemble_control()
 
     const float text_padding = 7.0f;
     const float slider_width = 60.0f;
-    const float value_size = imgui->calc_text_size("3.00"sv).x + text_padding * 2;
+    const float value_size = imgui->calc_text_size(std::string_view("3.00")).x + text_padding * 2;
     const float item_spacing = imgui->get_item_spacing().x;
     ImVec2 window_padding = ImGui::GetStyle().WindowPadding;
 
@@ -10616,7 +10623,7 @@ void GLCanvas3D::_render_assemble_control()
         int selection_idx = m_selection.get_volume_selection_mode() == Selection::Instance ? 0 : 1;
         auto label         = _u8L("Selection Mode") + ":" ;
         auto label_width   = imgui->calc_text_size(label).x ;
-        auto item_width    = imgui->calc_text_size(_u8L("Object")).x * 2.5 + imgui->calc_text_size("xx"sv).x+ item_spacing;
+        auto item_width    = imgui->calc_text_size(_u8L("Object")).x * 2.5 + imgui->calc_text_size(std::string_view("xx")).x+ item_spacing;
         //render imgui
         ImGui::AlignTextToFramePadding();
         ImGui::PushItemWidth(label_width);

src/slic3r/GUI/GUI_App.cpp

@@ -9035,7 +9035,7 @@ std::map<std::string, std::string> GUI_App::get_delete_cache_presets_lock()
 
 void GUI_App::process_delete_presets()
 {
-    std::map<string, string> delete_cache_presets = get_delete_cache_presets_lock();
+    std::map<std::string, std::string> delete_cache_presets = get_delete_cache_presets_lock();
     for (auto it = delete_cache_presets.begin(); it != delete_cache_presets.end();) {
         if (it->first.empty()) continue;
         std::string del_setting_id = it->first;
@@ -10063,7 +10063,7 @@ bool is_soluble_filament(int extruder_id)
     return support_option->get_at(0);
 };
 
-bool has_filaments(const std::vector<string>& model_filaments) {
+bool has_filaments(const std::vector<std::string>& model_filaments) {
     auto &filament_presets = Slic3r::GUI::wxGetApp().preset_bundle->filament_presets;
     if (!Slic3r::GUI::wxGetApp().plater()) return false;
     auto model_objects = Slic3r::GUI::wxGetApp().plater()->model().objects;
@@ -10098,7 +10098,7 @@ bool is_support_filament(int extruder_id, bool strict_check)
     Slic3r::ConfigOptionBools *support_option = dynamic_cast<Slic3r::ConfigOptionBools *>(filament->config.option("filament_is_support"));
 
     if(!strict_check &&(filament_type == "PETG" || filament_type == "PLA")) {
-        std::vector<string> model_filaments;
+        std::vector<std::string> model_filaments;
         if (filament_type == "PETG")
             model_filaments.emplace_back("PLA");
         else {

src/slic3r/GUI/GUI_ObjectList.cpp

@@ -1108,7 +1108,7 @@ void ObjectList::update_name_column_width() const
         }
     }
 
-    GetColumn(colName)->SetWidth(max(0, client_size.x - (others_width)*em));
+    GetColumn(colName)->SetWidth(std::max(0, client_size.x - (others_width)*em));
 }
 
 void ObjectList::set_filament_column_hidden(const bool hide) const
@@ -3970,7 +3970,7 @@ wxDataViewItem ObjectList::add_settings_item(wxDataViewItem parent_item, const D
         if (config->opt_float("layer_height") == object_cfg->opt_float("layer_height")) {
             SettingsFactory::Bundle new_cat_options;
             for (auto cat_opt : cat_options) {
-                std::vector<string> temp;
+                std::vector<std::string> temp;
                 for (auto value : cat_opt.second) {
                     if (value != "layer_height")
                         temp.push_back(value);

src/slic3r/GUI/Gizmos/GLGizmoCut.cpp

@@ -3651,7 +3651,7 @@ void GLGizmoCut3D::perform_cut(const Selection& selection)
                         // model_name     failing reason
                         std::vector<std::pair<std::string, std::string>> failed_models;
                         auto                                             plater = wxGetApp().plater();
-                        auto fix_and_update_progress = [keep_painting](ModelObject *model_object, const int vol_idx, const string &model_name, ProgressDialog &progress_dlg,
+                        auto fix_and_update_progress = [keep_painting](ModelObject *model_object, const int vol_idx, const std::string &model_name, ProgressDialog &progress_dlg,
                                                                       std::vector<std::string> &succes_models, std::vector<std::pair<std::string, std::string>> &failed_models) {
                             wxString msg = _L("Repairing model object");
                             msg += ": " + from_u8(model_name) + "\n";

src/slic3r/GUI/Gizmos/GizmoObjectManipulation.cpp

@@ -801,7 +801,7 @@ void GizmoObjectManipulation::do_render_move_window(ImGuiWrapper *imgui_wrapper,
         imgui_wrapper->calc_text_size(_L("World")).x,
         imgui_wrapper->calc_text_size(_L("Object")).x,
         imgui_wrapper->calc_text_size(_L("Part")).x
-    }) + imgui_wrapper->calc_text_size("xxx"sv).x + imgui_wrapper->scaled(3.5f);
+    }) + imgui_wrapper->calc_text_size(std::string_view("xxx")).x + imgui_wrapper->scaled(3.5f);
     float label_max = std::max({
         imgui_wrapper->calc_text_size(_L("Position")).x,
         imgui_wrapper->calc_text_size(_L("Relative")).x
@@ -1181,7 +1181,7 @@ void GizmoObjectManipulation::do_render_scale_input_window(ImGuiWrapper* imgui_w
         imgui_wrapper->calc_text_size(_L("World")).x,
         imgui_wrapper->calc_text_size(_L("Object")).x,
         imgui_wrapper->calc_text_size(_L("Part")).x
-    }) + imgui_wrapper->calc_text_size("xxx"sv).x + imgui_wrapper->scaled(3.5f);
+    }) + imgui_wrapper->calc_text_size(std::string_view("xxx")).x + imgui_wrapper->scaled(3.5f);
     float label_max = std::max({
         imgui_wrapper->calc_text_size(_L_CONTEXT("Scale", "Noun")).x,
         imgui_wrapper->calc_text_size(_L("Size")).x

src/slic3r/GUI/HMS.cpp

@@ -32,7 +32,7 @@ static const char* HMS_LOCAL_IMG_PATH = "hms/local_image";
 
 // the local HMS info
 // Orca: dev-id-type set trimmed to the devices Orca ships local HMS images for
-static unordered_set<string> package_dev_id_types {"094", "239", "093", "22E"};
+static std::unordered_set<std::string> package_dev_id_types {"094", "239", "093", "22E"};
 
 // Orca: HMS should be disabled when stealth mode is on or networking is not installed
 static bool should_disable_hms()
@@ -344,17 +344,17 @@ wxString HMSQuery::query_hms_msg(const std::string& dev_id, const std::string& l
     return _query_hms_msg(dev_id.substr(0, 3), long_error_code, lang_code);
 }
 
-string HMSQuery::get_dev_id_type(const MachineObject* obj) const
+std::string HMSQuery::get_dev_id_type(const MachineObject* obj) const
 {
     if (obj)
     {
         return obj->get_dev_id().substr(0, 3);
     }
 
-    return string();
+    return std::string();
 }
 
-wxString HMSQuery::_query_hms_msg(const string& dev_id_type, const string& long_error_code, const string& lang_code)
+wxString HMSQuery::_query_hms_msg(const std::string& dev_id_type, const std::string& long_error_code, const std::string& lang_code)
 {
     if (long_error_code.empty())
     {
@@ -425,9 +425,9 @@ wxString HMSQuery::_query_hms_msg(const string& dev_id_type, const string& long_
     return wxEmptyString;
 }
 
-bool HMSQuery::_is_internal_error(const string &dev_id_type,
-                                  const string &error_code,
-                                  const string &lang_code)
+bool HMSQuery::_is_internal_error(const std::string &dev_id_type,
+                                  const std::string &error_code,
+                                  const std::string &lang_code)
 {
     init_hms_info(dev_id_type);
     auto iter = m_hms_info_jsons.find(dev_id_type);

src/slic3r/GUI/IMSlider.cpp

@@ -1405,7 +1405,7 @@ void IMSlider::render_input_custom_gcode(std::string custom_gcode)
 }
 
 void IMSlider::do_go_to_layer(size_t layer_number) {
-    layer_number = clamp((int)layer_number, m_min_value, m_max_value);
+    layer_number = std::clamp((int)layer_number, m_min_value, m_max_value);
     GetSelection() == ssLower ? SetLowerValue(layer_number) : SetHigherValue(layer_number);
 }
 

src/slic3r/GUI/Jobs/PrintJob.cpp

@@ -334,7 +334,7 @@ void PrintJob::process(Ctl &ctl)
         auto origin_profile_id = model_info->metadata_items.find(BBL_DESIGNER_PROFILE_ID_TAG);
         if (origin_profile_id != model_info->metadata_items.end()) {
             try {
-                params.origin_profile_id    = stoi(origin_profile_id->second.c_str());
+                params.origin_profile_id    = std::stoi(origin_profile_id->second.c_str());
             }
             catch(...) {}
         }

src/slic3r/GUI/NotificationManager.cpp

@@ -536,12 +536,12 @@ void NotificationManager::PopNotification::count_lines()
 		return;
 
 	// handle with marks
-    if (pos_start == string::npos && pos_end == string::npos) {
+    if (pos_start == std::string::npos && pos_end == std::string::npos) {
         pos_start = text.find(error_start);
-        if (pos_start != string::npos) {
+        if (pos_start != std::string::npos) {
             text.erase(pos_start, error_start.length());
             pos_end = text.find(error_end);
-            if (pos_end != string::npos) {
+            if (pos_end != std::string::npos) {
                 text.erase(pos_end, error_end.length());
             }
         }
@@ -675,7 +675,7 @@ void NotificationManager::PopNotification::bbl_render_block_notif_text(ImGuiWrap
 			if (m_text1.size() > m_endlines[i])
 				last_end += (m_text1[m_endlines[i]] == '\n' || m_text1[m_endlines[i]] == ' ' ? 1 : 0);
 
-			if (pos_start != string::npos && pos_end != string::npos && m_endlines[i] - line.length() >= pos_start && m_endlines[i] <= pos_end) {
+			if (pos_start != std::string::npos && pos_end != std::string::npos && m_endlines[i] - line.length() >= pos_start && m_endlines[i] <= pos_end) {
 				push_style_color(ImGuiCol_Text, m_ErrorColor, m_state == EState::FadingOut, m_current_fade_opacity);
 				imgui.text(line.c_str());
 				ImGui::PopStyleColor();
@@ -737,7 +737,7 @@ void NotificationManager::PopNotification::render_text(ImGuiWrapper& imgui, cons
 			if (m_text1.size() > m_endlines[i])
 				last_end += (m_text1[m_endlines[i]] == '\n' || m_text1[m_endlines[i]] == ' ' ? 1 : 0);
 
-            if (pos_start != string::npos && pos_end != string::npos&& m_endlines[i] - line.length() >= pos_start && m_endlines[i] <= pos_end) {
+            if (pos_start != std::string::npos && pos_end != std::string::npos&& m_endlines[i] - line.length() >= pos_start && m_endlines[i] <= pos_end) {
                 push_style_color(ImGuiCol_Text, m_ErrorColor, m_state == EState::FadingOut, m_current_fade_opacity);
                 imgui.text(line.c_str());
                 ImGui::PopStyleColor();

src/slic3r/GUI/NotificationManager.hpp

@@ -631,8 +631,8 @@ private:
 		// Aditional text after hypertext - currently not used
 		std::string      m_text2;
 		// mark for render operation
-		size_t           pos_start = string::npos;
-		size_t	         pos_end = string::npos;
+		size_t           pos_start = std::string::npos;
+		size_t	         pos_end = std::string::npos;
 		std::string      error_start = "<Error>";
 		std::string      error_end = "</Error>";
 

src/slic3r/GUI/PartSkipDialog.cpp

@@ -86,7 +86,7 @@ PartSkipDialog::PartSkipDialog(wxWindow *parent) : DPIDialog(parent, wxID_ANY, _
 {
     std::time_t       t = std::time(0);
     std::stringstream buf;
-    buf << put_time(std::localtime(&t), "%a_%b_%d_%H_%M_%S/");
+    buf << std::put_time(std::localtime(&t), "%a_%b_%d_%H_%M_%S/");
     m_timestamp = buf.str();
 
     SetBackgroundColour(*wxWHITE);
@@ -402,7 +402,7 @@ std::string PartSkipDialog::create_tmp_path()
     return tmp_path;
 }
 
-bool PartSkipDialog::is_local_file_existed(const std::vector<string> &local_paths)
+bool PartSkipDialog::is_local_file_existed(const std::vector<std::string> &local_paths)
 {
     for (auto path : local_paths) {
         if (!std::filesystem::exists(path)) { return false; }
@@ -703,8 +703,8 @@ void PartSkipDialog::InitDialogUI()
     m_parts_state.clear();
     m_parts_name.clear();
 
-    string pick_img   = m_local_paths[0];
-    string slice_info = m_local_paths[2];
+    std::string pick_img   = m_local_paths[0];
+    std::string slice_info = m_local_paths[2];
 
     m_switch_drag_btn->SetIcon("canvas_drag");
     m_switch_drag_btn->SetBackgroundColor(*wxWHITE);

src/slic3r/GUI/PartSkipDialog.hpp

@@ -139,11 +139,11 @@ private:
     boost::shared_ptr<PrinterFileSystem> m_file_sys;
     std::string                          m_timestamp;
     std::string                          m_tmp_path;
-    std::vector<string>                  m_local_paths;
-    std::vector<string>                  m_target_paths;
+    std::vector<std::string>             m_local_paths;
+    std::vector<std::string>             m_target_paths;
     std::string                          create_tmp_path();
 
-    bool is_local_file_existed(const std::vector<string> &local_paths);
+    bool is_local_file_existed(const std::vector<std::string> &local_paths);
 
     void DownloadPartsFile();
     void OnFileSystemEvent(wxCommandEvent &event);

src/slic3r/GUI/Plater.cpp

@@ -361,7 +361,7 @@ wxDEFINE_EVENT(EVT_NOTICE_FULL_SCREEN_CHANGED, IntEvent);
 #define PRINTER_PANEL_RADIUS (6) // ORCA
 #define BTN_SYNC_SIZE (wxSize(FromDIP(96), FromDIP(98)))
 
-static string get_diameter_string(float diameter)
+static std::string get_diameter_string(float diameter)
 {
     std::ostringstream stream; // ORCA ensure 0.25 returned as 0.25. previous code returned as 0.2 because of std::setprecision(1)
     stream << std::fixed << std::setprecision(2) << diameter;  // Use 2 decimals to capture 0.25 / 0.15 reliably
@@ -6327,7 +6327,7 @@ void Sidebar::sync_ams_list(bool is_from_big_sync_btn)
     }
 
     // BBS:Record consumables information before synchronization
-    std::vector<string> color_before_sync;
+    std::vector<std::string> color_before_sync;
     std::vector<bool>   is_support_before;
     DynamicPrintConfig& project_config = wxGetApp().preset_bundle->project_config;
     ConfigOptionStrings* color_opt = project_config.option<ConfigOptionStrings>("filament_colour");
@@ -12766,7 +12766,7 @@ void Plater::priv::on_select_preset(wxCommandEvent &evt)
     Vec3d old_plate_pos = old_plate->get_center_origin();
 
     // BBS: Save the model in the current platelist
-    std::vector<vector<int> > plate_object;
+    std::vector<std::vector<int> > plate_object;
     for (size_t i = 0; i < old_plate_list.get_plate_count(); ++i) {
         PartPlate* plate = old_plate_list.get_plate(i);
         std::vector<int> obj_idxs;
@@ -17979,7 +17979,7 @@ bool Plater::load_files(const wxArrayString& filenames)
 
     // Orca: Iters through given paths and imports files from zip then remove zip from paths
     // returns true if zip files were found
-    auto handle_zips = [this](vector<fs::path>& paths) { // NOLINT(*-no-recursion) - Recursion is intended and should be managed properly
+    auto handle_zips = [this](std::vector<fs::path>& paths) { // NOLINT(*-no-recursion) - Recursion is intended and should be managed properly
         bool res = false;
         for (auto it = paths.begin(); it != paths.end();) {
             if (boost::algorithm::iends_with(it->string(), ".zip")) {

src/slic3r/GUI/Preferences.cpp

@@ -378,7 +378,7 @@ wxBoxSizer *PreferencesDialog::create_item_combobox(wxString title, wxString too
 
     auto current_setting = app_config->get(param);
     if (!current_setting.empty()) {
-        auto compare  = [current_setting](string possible_setting) { return current_setting == possible_setting; };
+        auto compare  = [current_setting](std::string possible_setting) { return current_setting == possible_setting; };
         auto iterator = find_if(config_name_index.begin(), config_name_index.end(), compare);
         if (iterator != config_name_index.end())
             current_index = static_cast<unsigned int>(iterator - config_name_index.begin());
@@ -1714,7 +1714,7 @@ void PreferencesDialog::create_items()
     g_sizer->Add(create_item_title(_L("Project")), 1, wxEXPAND);
 
     std::vector<wxString> projectLoadSettingsBehaviourOptions = {_L("Load All"), _L("Ask When Relevant"), _L("Always Ask"), _L("Load Geometry Only")};
-    std::vector<string>   projectLoadSettingsConfigOptions    = { OPTION_PROJECT_LOAD_BEHAVIOUR_LOAD_ALL, OPTION_PROJECT_LOAD_BEHAVIOUR_ASK_WHEN_RELEVANT, OPTION_PROJECT_LOAD_BEHAVIOUR_ALWAYS_ASK, OPTION_PROJECT_LOAD_BEHAVIOUR_LOAD_GEOMETRY };
+    std::vector<std::string> projectLoadSettingsConfigOptions    = { OPTION_PROJECT_LOAD_BEHAVIOUR_LOAD_ALL, OPTION_PROJECT_LOAD_BEHAVIOUR_ASK_WHEN_RELEVANT, OPTION_PROJECT_LOAD_BEHAVIOUR_ALWAYS_ASK, OPTION_PROJECT_LOAD_BEHAVIOUR_LOAD_GEOMETRY };
     auto item_project_load     = create_item_combobox(_L("Load behavior"), _L("Should printer/filament/process settings be loaded when opening a 3MF file?"), SETTING_PROJECT_LOAD_BEHAVIOUR, projectLoadSettingsBehaviourOptions, projectLoadSettingsConfigOptions);
     g_sizer->Add(item_project_load);
 

src/slic3r/GUI/Project.cpp

@@ -238,7 +238,7 @@ void ProjectPanel::on_reload(wxCommandEvent& evt)
         }
 
         bool has_content = false;
-        for (const string& v : {
+        for (const std::string& v : {
                  update_type,
                  license,
                  model_name,

src/slic3r/GUI/ReleaseNote.cpp

@@ -1816,7 +1816,10 @@ void InputIpAddressDialog::set_machine_obj(MachineObject* obj)
     m_input_printer_name->GetTextCtrl()->SetLabelText(m_obj->get_dev_name());
 
     std::string img_str = DevPrinterConfigUtil::get_printer_connect_help_img(m_obj->printer_type);
-    auto diagram_bmp = create_scaled_bitmap(img_str + "_en", this, 198);
+    if (img_str.empty()) { img_str = "input_access_code_x1"; }
+
+    std::string language = wxGetApp().app_config->get("language");
+    auto diagram_bmp = create_scaled_bitmap(img_str + (language == "zh_CN" ? "_cn" : "_en"), this, 198);
     m_img_help->SetBitmap(diagram_bmp);
 
 

src/slic3r/GUI/SelectMachine.cpp

@@ -180,7 +180,7 @@ std::string get_nozzle_volume_type_cloud_string(NozzleVolumeType nozzle_volume_t
 static int s_nozzle_mapping_last_request_time = 0;
 
 std::vector<wxString> SelectMachineDialog::MACHINE_BED_TYPE_STRING;
-std::vector<string> SelectMachineDialog::MachineBedTypeString;
+std::vector<std::string> SelectMachineDialog::MachineBedTypeString;
 void                SelectMachineDialog::init_machine_bed_types()
 {
     if (MACHINE_BED_TYPE_STRING.size() == 0) {
@@ -2746,8 +2746,8 @@ void SelectMachineDialog::on_ok_btn(wxCommandEvent &event)
     std::vector<ConfirmBeforeSendInfo> confirm_text;
 
     // check more than one using in same external spool
-    std::unordered_set<string> main_external_spool_filas;
-    std::unordered_set<string> deputy_external_spool_filas;
+    std::unordered_set<std::string> main_external_spool_filas;
+    std::unordered_set<std::string> deputy_external_spool_filas;
     for (const auto& mapping_info : m_ams_mapping_result) {
         if (mapping_info.ams_id == VIRTUAL_AMS_MAIN_ID_STR){
             main_external_spool_filas.insert(mapping_info.filament_id);
@@ -5237,7 +5237,7 @@ void SelectMachineDialog::update_show_status(MachineObject* obj_)
 
     /*Check high temperture slicing*/
     if (m_print_type == PrintFromType::FROM_NORMAL) {
-        std::set<string>  high_temp_filaments;
+        std::set<std::string> high_temp_filaments;
         std::unordered_set<int> known_fila_soften_extruders;
         std::unordered_set<int> unknown_fila_soften_extruders;
         auto preset_full_config = wxGetApp().preset_bundle->full_config();

src/slic3r/GUI/SelectMachine.hpp

@@ -337,7 +337,7 @@ private:
     wxColour                            m_colour_bold_color{wxColour(38, 46, 48)};
     StateColor                          m_btn_bg_enable;
 
-    std::unordered_map<string, PrintOption*> m_checkbox_list;
+    std::unordered_map<std::string, PrintOption*> m_checkbox_list;
     std::list<PrintOption*>                  m_checkbox_list_order;
 
     std::shared_ptr<int>                m_token = std::make_shared<int>(0);

src/slic3r/GUI/SendToPrinter.cpp

@@ -126,7 +126,7 @@ void SendToPrinterDialog::stripWhiteSpace(std::string& str)
 {
     if (str == "") { return; }
 
-    string::iterator cur_it;
+    std::string::iterator cur_it;
     cur_it = str.begin();
 
     while (cur_it != str.end()) {

src/slic3r/GUI/StatusPanel.hpp

@@ -171,7 +171,7 @@ public:
     std::string current_nozzle_loc = "";
     wxColour m_colour;
 
-    string m_file_name;
+    std::string m_file_name;
     bool   m_ams_loading{false};
     void   doRender(wxDC &dc);
     ExtruderImage(wxWindow *parent, wxWindowID id, int nozzle_num, const wxPoint &pos = wxDefaultPosition, const wxSize &size = wxDefaultSize);
@@ -244,7 +244,7 @@ protected:
     {
         wxString          local_image_url; //local image path
         std::string       img_url_paths; // oss url path
-        vector<wxPanel *> image_broad;
+        std::vector<wxPanel *> image_broad;
         bool              is_selected;
         bool              is_uploaded; // load
         wxBoxSizer *      image_tb_broad = nullptr;

src/slic3r/GUI/SyncAmsInfoDialog.cpp

@@ -1578,7 +1578,7 @@ bool SyncAmsInfoDialog::is_nozzle_type_match(DevExtderSystem data, wxString &err
         }
     }
 
-    vector<int> map_extruders = {1, 0};
+    std::vector<int> map_extruders = {1, 0};
 
     // The default two extruders are left, right, but the order of the extruders on the machine is right, left.
     std::vector<std::string> flow_type_of_machine;
@@ -1678,7 +1678,7 @@ void SyncAmsInfoDialog::stripWhiteSpace(std::string &str)
 {
     if (str == "") { return; }
 
-    string::iterator cur_it;
+    std::string::iterator cur_it;
     cur_it = str.begin();
 
     while (cur_it != str.end()) {

src/slic3r/GUI/Tab.cpp

@@ -2257,7 +2257,7 @@ void Tab::on_value_change(const std::string& opt_key, const boost::any& value)
             wxGetApp().plater()->update();
     }
 
-    string opt_key_without_idx = opt_key.substr(0, opt_key.find('#'));
+    std::string opt_key_without_idx = opt_key.substr(0, opt_key.find('#'));
 
     if (opt_key_without_idx == "long_retractions_when_cut") {
         unsigned char activate = boost::any_cast<unsigned char>(value);
@@ -2928,7 +2928,7 @@ void TabPrint::build()
         optgroup->append_single_option_line("skin_infill_line_width", "strength_settings_patterns#locked-zag");
         optgroup->append_single_option_line("skeleton_infill_line_width", "strength_settings_patterns#locked-zag");
         optgroup->append_single_option_line("symmetric_infill_y_axis", "strength_settings_infill#symmetric-infill-y-axis");
-        optgroup->append_single_option_line("infill_complete_top", "strength_settings_infill#infill-complete-top");
+        optgroup->append_single_option_line("infill_complete_top", "strength_settings_patterns#fill-pattern-tops");
         optgroup->append_single_option_line("infill_shift_step", "strength_settings_patterns#cross-hatch");
         optgroup->append_single_option_line("lateral_lattice_angle_1", "strength_settings_patterns#lateral-lattice");
         optgroup->append_single_option_line("lateral_lattice_angle_2", "strength_settings_patterns#lateral-lattice");

src/slic3r/GUI/WebGuideDialog.cpp

@@ -1685,13 +1685,13 @@ int GuideFrame::SaveProfileData()
     return 0;
 }
 
-void StringReplace(string &strBase, string strSrc, string strDes)
+void StringReplace(std::string &strBase, std::string strSrc, std::string strDes)
 {
-    string::size_type pos    = 0;
-    string::size_type srcLen = strSrc.size();
-    string::size_type desLen = strDes.size();
+    std::string::size_type pos    = 0;
+    std::string::size_type srcLen = strSrc.size();
+    std::string::size_type desLen = strDes.size();
     pos                      = strBase.find(strSrc, pos);
-    while ((pos != string::npos)) {
+    while ((pos != std::string::npos)) {
         strBase.replace(pos, srcLen, strDes);
         pos = strBase.find(strSrc, (pos + desLen));
     }

src/slic3r/GUI/Widgets/AMSControl.cpp

@@ -1052,7 +1052,7 @@ void AMSControl::UpdateAms(const std::string   &series_name,
     /*update humidity popup*/
     if (m_percent_humidity_dry_popup->IsShown())
     {
-        string target_id = m_percent_humidity_dry_popup->get_owner_ams_id();
+        std::string target_id = m_percent_humidity_dry_popup->get_owner_ams_id();
         for (const auto& the_info : ams_info)
         {
             if (target_id == the_info.ams_id)

src/slic3r/GUI/Widgets/AMSControl.hpp

@@ -63,7 +63,7 @@ protected:
 
     std::string                      m_dev_id;
     std::vector<std::vector<std::string>> m_item_ids{ {}, {} };
-    std::vector<std::pair<string, string>> pair_id;
+    std::vector<std::pair<std::string, std::string>> pair_id;
 
     int         m_total_ext_count = 1;
     AMSextruder *m_extruder{nullptr};
@@ -181,7 +181,7 @@ public:
     std::tuple<bool, bool> isFilaSwitchReady();
     void show_switcher_status(bool show);
 
-    void UpdatePassRoad(string ams_id, AMSPassRoadType type, AMSPassRoadSTEP step);
+    void UpdatePassRoad(std::string ams_id, AMSPassRoadType type, AMSPassRoadSTEP step);
     void CreateAms();
     void CreateAmsDoubleNozzle(const std::string &series_name, const std::string& printer_type);
     void CreateAmsSingleNozzle(const std::string &series_name, const std::string &printer_type);

src/slic3r/GUI/Widgets/AMSItem.cpp

@@ -634,7 +634,7 @@ void AMSextruderImage::doRender(wxDC &dc)
 }
 
 
-AMSextruderImage::AMSextruderImage(wxWindow *parent, wxWindowID id, string file_name, const wxSize& size, const wxPoint &pos)
+AMSextruderImage::AMSextruderImage(wxWindow *parent, wxWindowID id, std::string file_name, const wxSize& size, const wxPoint &pos)
 {
     wxWindow::Create(parent, id, pos, size);
     SetBackgroundColour(StateColor::darkModeColorFor(*wxWHITE));
@@ -823,7 +823,7 @@ void SwitcherImage::doRender(wxDC &dc)
     Layout();
 }
 
-SwitcherImage::SwitcherImage(wxWindow *parent, wxWindowID id, string file_name, const wxSize& size, const wxPoint &pos)
+SwitcherImage::SwitcherImage(wxWindow *parent, wxWindowID id, std::string file_name, const wxSize& size, const wxPoint &pos)
 {
     wxWindow::Create(parent, id, pos, size);
     SetBackgroundColour(StateColor::darkModeColorFor(*wxWHITE));
@@ -899,7 +899,7 @@ void AMSextruder::OnAmsLoading(bool load, int nozzle_id, wxColour col /*= AMS_CO
 }
 
 /*return true if something is updated*/
-bool AMSextruder::updateNozzleNum(int nozzle_num, const string& series_name)
+bool AMSextruder::updateNozzleNum(int nozzle_num, const std::string& series_name)
 {
     if (m_nozzle_num == nozzle_num && m_series_name == series_name) return false;
     m_series_name = series_name;

src/slic3r/GUI/Widgets/AMSItem.hpp

@@ -393,10 +393,10 @@ public:
     bool            m_show_state = {false};
     wxColour        m_colour;
     ScalableBitmap  m_ams_extruder;
-    string m_file_name;
+    std::string m_file_name;
     bool            m_ams_loading{ false };
     void            doRender(wxDC &dc);
-    AMSextruderImage(wxWindow *parent, wxWindowID id, string file_name, const wxSize& size, const wxPoint &pos = wxDefaultPosition);
+    AMSextruderImage(wxWindow *parent, wxWindowID id, std::string file_name, const wxSize& size, const wxPoint &pos = wxDefaultPosition);
     ~AMSextruderImage();
 };
 
@@ -444,10 +444,10 @@ public:
     bool            m_show_state = {false};
     wxColour        m_colour;
     ScalableBitmap  m_switcher;
-    string m_file_name;
+    std::string m_file_name;
     // bool            m_ams_loading{ false };
     void            doRender(wxDC &dc);
-    SwitcherImage(wxWindow *parent, wxWindowID id, string file_name, const wxSize& size, const wxPoint &pos = wxDefaultPosition);
+    SwitcherImage(wxWindow *parent, wxWindowID id, std::string file_name, const wxSize& size, const wxPoint &pos = wxDefaultPosition);
     ~SwitcherImage();
 };
 
@@ -456,7 +456,7 @@ class AMSextruder : public wxWindow
 {
 private:
     int    m_nozzle_num = -1;
-    string m_series_name;
+    std::string m_series_name;
 
 public:
     void TurnOn(wxColour col);
@@ -466,7 +466,7 @@ public:
     void msw_rescale();
     void has_ams(bool hams) {m_has_vams = hams; Refresh();};
     void no_ams_mode(bool mode) {m_none_ams_mode = mode; Refresh();};
-    bool updateNozzleNum(int nozzle_num, const std::string& series_name = string());
+    bool updateNozzleNum(int nozzle_num, const std::string& series_name = std::string());
 
     bool            m_none_ams_mode{true};
     bool            m_has_vams{false};

src/slic3r/GUI/wxExtensions.cpp

@@ -453,9 +453,16 @@ wxBitmap create_scaled_bitmap(  const std::string& bmp_name_in,
                                 const bool menu_bitmap/* = false*/,
                                 const bool resize/* = false*/,
                                 const bool bitmap2/* = false*/,
-                                const vector<std::string>& array_new_color/* = vector<std::string>*/)//used for semi transparent material)
+                                const std::vector<std::string>& array_new_color/* = vector<std::string>*/)//used for semi transparent material)
 {
     static Slic3r::GUI::BitmapCache cache;
+
+    // An empty name means the caller's icon lookup failed
+    if (bmp_name_in.empty() || bmp_name_in == ".png") {
+        BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << ": empty bitmap name";
+        return wxNullBitmap;
+    }
+
     if (bitmap2) {
         return create_scaled_bitmap2(bmp_name_in, cache, win, px_cnt, grayscale, resize, array_new_color);
     }
@@ -494,7 +501,7 @@ wxBitmap create_scaled_bitmap(  const std::string& bmp_name_in,
 
 wxBitmap create_scaled_bitmap2(const std::string& bmp_name_in, Slic3r::GUI::BitmapCache& cache, wxWindow* win/* = nullptr*/ ,
     const int px_cnt/* = 16*/, const bool grayscale/* = false*/ , const bool resize/* = false*/ ,
-    const vector<std::string>& array_new_color/* = vector<std::string>()*/) // color witch will used instead of orange
+    const std::vector<std::string>& array_new_color/* = vector<std::string>()*/) // color witch will used instead of orange
 {
     unsigned int width = 0;
     // win may be nullptr; see create_scaled_bitmap() above.

src/slic3r/Utils/json_diff.hpp

@@ -9,7 +9,6 @@
 
 
 using json = nlohmann::json;
-using namespace std;
 
 class json_diff
 {

tests/fff_print/test_gcodeprocessor.cpp

@@ -1,15 +1,20 @@
 #include <catch2/catch_all.hpp>
 
+#include <catch2/catch_message.hpp>
 #include <catch2/catch_test_macros.hpp>
 #include <catch2/generators/catch_generators.hpp>
 #include <catch2/matchers/catch_matchers.hpp>
 #include <catch2/matchers/catch_matchers_floating_point.hpp>
 #include "libslic3r/libslic3r.h"
+#include "libslic3r/Config.hpp"
 #include "libslic3r/GCode/GCodeProcessor.hpp"
+#include "libslic3r/Model.hpp"
 #include "libslic3r/Utils.hpp"
 
+#include "test_helpers.hpp"
 #include "test_utils.hpp"
 
+#include <algorithm>
 #include <cstddef>
 #include <fstream>
 #include "libslic3r/PrintConfig.hpp"
@@ -177,3 +182,42 @@ TEST_CASE("A seam takes the actual speed of the move it follows", "[GCodeProcess
         }
     REQUIRE(seams > 0);
 }
+
+TEST_CASE("Line ends of the exported G-code mark every newline in the file", "[GCodeProcessor]")
+{
+    struct Case
+    {
+        const char* name;
+        bool        preheat_backtrace;
+        bool        pre_heating;
+    };
+    const auto test_case = GENERATE(values<Case>({
+        { "written by size", false, false },
+        { "written by time for the preheat backtrace", true, false },
+        { "rewritten by the pre-heating pass", false, true },
+    }));
+    INFO(test_case.name);
+    DynamicPrintConfig config = Test::multifilament_config(2, {
+        { "single_extruder_multi_material", 0 },
+        { "ooze_prevention",                test_case.preheat_backtrace },
+        { "preheat_time",                   30 },
+        { "enable_pre_heating",             test_case.pre_heating },
+    });
+    Print print;
+    Model model;
+    const std::vector<std::vector<ConfigBase::SetDeserializeItem>> overrides{ { { "extruder", 1 } }, { { "extruder", 2 } } };
+    Test::init_print({ Test::cube(20), Test::cube(20) }, print, model, config, &overrides);
+    GCodeProcessorResult result;
+    const std::string    gcode = Test::gcode(print, &result);
+    REQUIRE((gcode.find("preheat T") != std::string::npos) == test_case.preheat_backtrace);
+    REQUIRE((gcode.find(GCodeProcessor::Machine_Start_GCode_End_Tag) != std::string::npos) == test_case.pre_heating);
+    REQUIRE(gcode.size() > GCodeProcessor::Output_Block_Size);
+
+    std::vector<size_t> newline_ends;
+    for (size_t i = gcode.find('\n'); i != std::string::npos; i = gcode.find('\n', i + 1))
+        newline_ends.push_back(i + 1);
+    REQUIRE(result.lines_ends.size() == newline_ends.size());
+    const auto difference = std::mismatch(result.lines_ends.begin(), result.lines_ends.end(), newline_ends.begin());
+    INFO("first difference at line " << difference.first - result.lines_ends.begin() + 1);
+    CHECK(difference.first == result.lines_ends.end());
+}

tests/fff_print/test_helpers.cpp

@@ -14,6 +14,7 @@
 #include <initializer_list>
 #include "libslic3r/Point.hpp"
 #include <fstream>
+#include <ios>
 #include <iterator>
 #include <set>
 #include <string>
@@ -330,13 +331,13 @@ void init_and_process_print(std::initializer_list<TriangleMesh> meshes, Slic3r::
 	print.process();
 }
 
-std::string gcode(Print & print)
+std::string gcode(Print & print, GCodeProcessorResult* result)
 {
     ScopedTemporaryFile temp(".gcode");
     print.set_status_silent();
     print.process();
-    print.export_gcode(temp.string(), nullptr, nullptr);
-    std::ifstream t(temp.string());
+    print.export_gcode(temp.string(), result, nullptr);
+    std::ifstream t(temp.string(), std::ios::binary);
 	std::string str((std::istreambuf_iterator<char>(t)), std::istreambuf_iterator<char>());
 	return str;
 }

tests/fff_print/test_helpers.hpp

@@ -17,7 +17,9 @@
 #include <unordered_map>
 #include <vector>
 
-namespace Slic3r { namespace Test {
+namespace Slic3r {
+struct GCodeProcessorResult;
+namespace Test {
 
 constexpr double MM_PER_MIN = 60.0;
 
@@ -92,8 +94,8 @@ void init_and_process_print(std::initializer_list<TriangleMesh> meshes, Slic3r::
 void init_and_process_print(std::initializer_list<TestMesh> meshes, Slic3r::Print &print, std::initializer_list<Slic3r::ConfigBase::SetDeserializeItem> config_items);
 void init_and_process_print(std::initializer_list<TriangleMesh> meshes, Slic3r::Print &print, std::initializer_list<Slic3r::ConfigBase::SetDeserializeItem> config_items);
 
-// Process `print` and return its exported G-code.
-std::string gcode(Print& print);
+// Process `print` and return its exported G-code, filling `result` when one is given.
+std::string gcode(Print& print, GCodeProcessorResult* result = nullptr);
 
 // Build, slice, and return the G-code for `meshes` under the given config.
 std::string slice(std::initializer_list<TestMesh> meshes, const DynamicPrintConfig &config);

tests/fff_print/test_perimeters.cpp

@@ -19,8 +19,10 @@
 #include <cstddef>
 #include "libslic3r/libslic3r.h"
 #include "libslic3r/BoundingBox.hpp"
+#include "libslic3r/ClipperUtils.hpp"
 #include "libslic3r/ExPolygon.hpp"
 #include "libslic3r/Point.hpp"
+#include "libslic3r/Polyline.hpp"
 #include <limits>
 #include <string>
 #include <utility>
@@ -275,6 +277,124 @@ TEST_CASE("Only one wall on the first layer needs a bottom shell", "[Perimeters]
 
 namespace {
 
+// The last layer of the tab, whose top surface shares an island with the tube walls rising past it.
+const double tab_top_z = 5.0;
+
+// With the widths below the tube walls are 1.10mm wide once the precise outer wall offset (0.043mm a side) is
+// taken off. That is narrower than 3 outer wall spacings (3 x 0.377 = 1.131mm), so an Arachne pass limited to a
+// single wall fills it by widening its 2 beads, yet wide enough for the full 2 wall pass to add a middle wall
+// (from 1.062mm).
+const double narrow_wall = 1.186;
+
+// A 20x30x10 tube with narrow_wall thick walls, and a 20x8x5 tab against its -Y side.
+Print &tube_with_tab(Print &print, Model &model, const DynamicPrintConfig &config)
+{
+    ModelObject *object = model.add_object();
+    object->name = "tube_with_tab.stl";
+    object->add_volume(make_cube(20., 30., 10.), ModelVolumeType::MODEL_PART, false);
+    // Overlaps the tube wall by 0.5mm so the two parts slice as one island.
+    TriangleMesh tab = make_cube(20., 8.5, 5.);
+    tab.translate(0.f, -8.f, 0.f);
+    object->add_volume(std::move(tab), ModelVolumeType::MODEL_PART, false);
+    TriangleMesh bore = make_cube(20. - 2. * narrow_wall, 30. - 2. * narrow_wall, 12.);
+    bore.translate(float(narrow_wall), float(narrow_wall), -1.f);
+    object->add_volume(std::move(bore), ModelVolumeType::NEGATIVE_VOLUME, false);
+    object->add_instance();
+    object->ensure_on_bed();
+
+    print.auto_assign_extruders(object);
+    print.apply(model, config);
+    print.validate();
+    print.set_status_silent();
+    return print;
+}
+
+// Every width the narrow_wall arithmetic depends on, so none of them rests on a default.
+DynamicPrintConfig narrow_wall_config(bool only_one_wall_top, double top_surface_expansion)
+{
+    DynamicPrintConfig config = base_config("arachne");
+    config.set_deserialize_strict({
+        { "wall_loops",            2 },
+        { "nozzle_diameter",       "0.4" },
+        { "line_width",            0.42 },
+        { "outer_wall_line_width", 0.42 },
+        { "inner_wall_line_width", 0.45 },
+        { "min_bead_width",        "85%" },
+        { "precise_outer_wall",    true },
+        { "wall_sequence",         "inner wall/outer wall" },
+        { "only_one_wall_top",     only_one_wall_top },
+        { "top_surface_expansion", top_surface_expansion },
+    });
+    return config;
+}
+
+// Inner wall length the layer at print_z extrudes within 3mm of its +Y edge: the tube wall facing away from the tab.
+double far_wall_inner_wall_length(const Print &print, double print_z)
+{
+    for (const Layer *layer : print.objects().front()->layers()) {
+        if (std::abs(layer->print_z - print_z) > EPSILON)
+            continue;
+        BoundingBox band = get_extents(layer->lslices);
+        band.min.y()     = band.max.y() - scaled<coord_t>(3.);
+
+        Polylines inner_walls;
+        auto      collect = [&inner_walls](const ExtrusionPaths &paths) {
+            for (const ExtrusionPath &path : paths)
+                if (path.role() == erPerimeter)
+                    inner_walls.emplace_back(path.as_polyline());
+        };
+        for (const LayerRegion *region : layer->regions()) {
+            const ExtrusionEntityCollection walls = region->perimeters.flatten();
+            for (const ExtrusionEntity *entity : walls.entities) {
+                if (const auto *loop = dynamic_cast<const ExtrusionLoop*>(entity))
+                    collect(loop->paths);
+                else if (const auto *multi_path = dynamic_cast<const ExtrusionMultiPath*>(entity))
+                    collect(multi_path->paths);
+                else if (const auto *path = dynamic_cast<const ExtrusionPath*>(entity))
+                    collect({ *path });
+            }
+        }
+        return unscaled<double>(total_length(intersection_pl(inner_walls, band.polygon())));
+    }
+    return 0.;
+}
+
+} // namespace
+
+// only_one_wall_top first lays out an island with a single Arachne wall and generates the inner walls inside it.
+// On a wall narrower than 3 outer wall spacings that single wall pass widens its 2 beads to fill the wall and leaves
+// no room for the middle wall, which is only intended over the top surface. The tube walls away from the tab are not
+// under the tab's top surface, so on the tab's last layer they keep the inner wall they get with the option off.
+TEST_CASE("Only one wall on top surfaces keeps the inner walls of narrow walls away from the top surface", "[Perimeters]")
+{
+    // 0 re-onions the region beside the top surface, 2 clips the inner walls over it.
+    const double top_surface_expansion = GENERATE(0.0, 2.0);
+    CAPTURE(top_surface_expansion);
+
+    struct TabTopLayer {
+        double perimeters;
+        double far_wall_inner_walls;
+    };
+    auto tab_top_layer_for = [top_surface_expansion](bool only_one_wall_top) {
+        Print print;
+        Model model;
+        tube_with_tab(print, model, narrow_wall_config(only_one_wall_top, top_surface_expansion));
+        print.process();
+        REQUIRE_FALSE(print.objects().empty());
+        return TabTopLayer{ perimeter_length_at(print, tab_top_z), far_wall_inner_wall_length(print, tab_top_z) };
+    };
+
+    const TabTopLayer plain    = tab_top_layer_for(false);
+    const TabTopLayer one_wall = tab_top_layer_for(true);
+
+    // The option acts on this layer: the inner walls under the tab's top surface are gone.
+    REQUIRE(plain.far_wall_inner_walls > 10.);
+    CHECK(one_wall.perimeters < plain.perimeters);
+    CHECK_THAT(one_wall.far_wall_inner_walls, Catch::Matchers::WithinAbs(plain.far_wall_inner_walls, 1.0));
+}
+
+namespace {
+
 // The layer that closes the cavity of box_over_cavity(), the first one printed over air.
 const double cavity_ceiling_z = 6.2;