From 1e87666487a11de4fe142eaeff88819eff055a8e Mon Sep 17 00:00:00 2001
From: SoftFever <softfeverever@gmail.com>
Date: Sun, 14 Sep 2025 20:35:44 +0800
Subject: [PATCH] Add support for OrcaSlicer 2.3.1-alpha infill rotation
 template warning

Implement a check for projects created with OrcaSlicer 2.3.1-alpha to warn users about potential issues with infill rotation template settings. If the infill pattern is not safe to rotate, prompt the user to clear the rotation template settings to avoid print quality issues.
---
 src/slic3r/GUI/Plater.cpp | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index f9d5e350b8..42217a310b 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -3851,8 +3851,32 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                     //         // Is there any modifier or advanced config data?
                     //         for (ModelVolume *model_volume : model_object->volumes) model_volume->config.reset();
                     //     }
-                    // } 
-                    else if (load_config && (file_version > app_version)) {
+                    // }
+                    // Orca: check if the project is created with OrcaSlicer 2.3.1-alpha and use the sparse infill rotation template for non-safe infill patterns
+                    else if ((file_version < app_version) && file_version == Semver("2.3.1-alpha")) {
+                        if (!config_loaded.opt_string("sparse_infill_rotate_template").empty()) {
+                            const auto _sparse_infill_pattern =
+                                config_loaded.option<ConfigOptionEnum<InfillPattern>>("sparse_infill_pattern")->value;
+                            bool is_safe_to_rotate = _sparse_infill_pattern == ipRectilinear || _sparse_infill_pattern == ipLine ||
+                                                     _sparse_infill_pattern == ipZigZag || _sparse_infill_pattern == ipCrossZag ||
+                                                     _sparse_infill_pattern == ipLockedZag;
+                            if (!is_safe_to_rotate) {
+                                wxString msg_text = _(
+                                    L("This project was created with an OrcaSlicer 2.3.1-alpha and uses "
+                                      "infill rotation template settings that may not work properly with your current infill pattern. "
+                                      "This could result in weak support or print quality issues."));
+                                msg_text += "\n\n" +
+                                            _(L("Would you like OrcaSlicer to automatically fix this by clearing the rotation template settings?"));
+                                MessageDialog dialog(wxGetApp().plater(), msg_text, "", wxICON_WARNING | wxYES | wxNO);
+                                dialog.SetButtonLabel(wxID_YES, _L("Yes"));
+                                dialog.SetButtonLabel(wxID_NO, _L("No"));
+                                if (dialog.ShowModal() == wxID_YES) {
+                                    config_loaded.opt_string("sparse_infill_rotate_template") = "";
+                                }
+                            }
+                        }
+
+                    } else if (load_config && (file_version > app_version)) {
                         if (config_substitutions.unrecogized_keys.size() > 0) {
                             wxString text  = wxString::Format(_L("The 3mf's version %s is newer than %s's version %s, found following unrecognized keys:"),
                                                              file_version.to_string(), std::string(SLIC3R_APP_FULL_NAME), app_version.to_string());
@@ -3883,8 +3907,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                                 show_info(q, text, _L("Newer 3mf version"));
                             }
                         }
-                    } 
-                    else if (!load_config) {
+                    } else if (!load_config) {
                         // reset config except color
                         for (ModelObject *model_object : model.objects) {
                             bool has_extruder = model_object->config.has("extruder");