add error tip

README_USAGE.md

@@ -0,0 +1,6 @@
+## Detailed steps
+1. 点击 *加载文件* ,选择.json配置文件(选择错误后缀会有提醒).
+   (比如: `engine/engin.json`)
+2. (可选)实时误差对比,点击 *导入Solidworks文件* ,选择*ref_res*文件夹.
+(比如: `engine/ref_res/`)
+3. 点击逐步仿真,并可选择导出.(或点击运行,但很难暂停 :))

src/SimState.hpp

@@ -51,8 +51,7 @@ public:
             infile.close();
             return j2;
         } else {
-            std::cout << "Failed to open file." << std::endl;
-            return nlohmann::json();
+            throw std::runtime_error("Failed to open file!");
         }
     }
 

src/viewer/UIMenu.cpp

@@ -10,6 +10,7 @@
 #include "Util.h"
 
 namespace ipc::rigid {
+    using namespace ssim;
 
     void UISimState::draw_menu() {
         // if (m_show_vertex_data) {
@@ -56,7 +57,8 @@ namespace ipc::rigid {
                         "结果", &settings_menu, ImGuiTreeNodeFlags_DefaultOpen)) {
                     draw_settings();
                 }
-                if (ImGui::CollapsingHeader("实时误差", &error_menu, ImGuiTreeNodeFlags_DefaultOpen)) {
+                if (ImGui::CollapsingHeader("实时误差", &error_menu,
+                                            ImGuiTreeNodeFlags_DefaultOpen)) {
                     draw_error_compare();
                 }
 
@@ -81,12 +83,38 @@ namespace ipc::rigid {
     } // namespace ipc::rigid
 
     void UISimState::draw_io() {
+        static bool show_popup= false;
         if (ImGui::Button("加载文件##IO", ImVec2(-1, 0))) {
-            std::string fname = igl::file_dialog_open();
-            if (fname != "") {
+            std::string f_json = igl::file_dialog_open();
+            if(!JudgeEndWith(f_json,".json")){
+                // wrong file suffix, tip to reload
+                show_popup=true;
+            }else{
+                show_popup= false;
                 gCtrl.Reset();
-                load(fname);
+                load(f_json);
+            }
+        }
+
+        // tip window
+        if (show_popup) {
+            static float popup_time = 0.0f;
+            const float popup_duration = 7.0f; // 显示时间
 
+            ImGui::SetNextWindowPos(ImVec2(600, 500)); // 窗口位置
+            ImGui::SetNextWindowBgAlpha(0.5f); // 背景透明度
+            ImGui::Begin("提示", &show_popup, ImGuiWindowFlags_NoTitleBar |
+                                              ImGuiWindowFlags_AlwaysAutoResize |
+                                              ImGuiWindowFlags_NoMove |
+                                              ImGuiWindowFlags_NoSavedSettings);
+            ImGui::Text("文件类型错误!\n请选择.json配置文件.");
+            ImGui::End();
+
+            if (popup_time == 0.0f) {
+                popup_time = ImGui::GetTime();
+            } else if (ImGui::GetTime() - popup_time > popup_duration) {
+                show_popup = false;
+                popup_time = 0.0f;
             }
         }
         if (m_has_scene) {
@@ -200,23 +228,63 @@ namespace ipc::rigid {
 
 //        ImGui::BeginChild("##config", ImVec2(ImGui::GetWindowContentRegionWidth(), 300), false,
 //                          ImGuiWindowFlags_HorizontalScrollbar);
-
+        static bool show_popup = false;
         static std::string input_dir;
         if (ImGui::Button("导入Solidworks文件", ImVec2(-1, 0))) {
             input_dir = ssim::directory_dialog_save();
+            if (!JudgeEndWith(input_dir, "/ref_res")) {
+                show_popup = true;
+            } else {
+                show_popup = false;
                 gCtrl.is_load_referece = true;
                 spdlog::info("input from: {}", input_dir);
+            }
+
+        }
+        // wrong dir tip
+        if (show_popup) {
+            // wrong input file tip
+            static float popup_time = 0.0f;
+            const float popup_duration = 7.0f; // 显示时间
 
+            ImGui::SetNextWindowPos(ImVec2(600, 500)); // 窗口位置
+            ImGui::SetNextWindowBgAlpha(0.5f); // 背景透明度
+            ImGui::Begin("提示", &show_popup, ImGuiWindowFlags_NoTitleBar |
+                                              ImGuiWindowFlags_AlwaysAutoResize |
+                                              ImGuiWindowFlags_NoMove |
+                                              ImGuiWindowFlags_NoSavedSettings);
+            ImGui::Text("文件夹类型错误!\n请选择ref_res文件夹.");
+            ImGui::End();
+
+            if (popup_time == 0.0f) {
+                popup_time = ImGui::GetTime();
+            } else if (ImGui::GetTime() - popup_time > popup_duration) {
+                show_popup = false;
+                popup_time = 0.0f;
+            }
         }
 
 
         if (gCtrl.is_load_referece) {
+            static std::vector<double> v_error(4, 0);
+            static std::vector<std::string> v_para_name{"位置", "旋转角", "线速度",
+                                                        "角速度"};
+
+            static int last_loop=0;
             int cur_loop = m_state.state_sequence.size();
+            if(cur_loop<=1){
+                for(auto&val:v_error){
+                    val=0;
+                }
+            }
 
             std::string read_file_name = input_dir + "/" + std::to_string(cur_loop) + ".txt";
-//            // TODO: fixme
+            // TODO: fixme
 //            spdlog::info("now to open file {0},curloop {1}", read_file_name, cur_loop);
-            if (cur_loop > 0) {
+            if (cur_loop!=last_loop &&  cur_loop > 0) {
+                last_loop=cur_loop;
+                // cal error
+                try {
                     nlohmann::json js_ref = m_state.txt2json(read_file_name);
                     std::vector<Eigen::VectorXd> v_vec_ref = GetVectorFromJSON(js_ref);
 
@@ -224,19 +292,33 @@ namespace ipc::rigid {
                     auto disp_state = get_display_json(cur_state);
                     std::vector<Eigen::VectorXd> v_vec_cpt = GetVectorFromJSON(disp_state);
 
-                static std::vector<std::string> v_para_name{"位置", "旋转角", "线速度", "角速度"};
 
-                // cal error
-                std::vector<double> v_error(v_vec_cpt.size(), 0);
                     for (int i = 0; i < v_error.size(); ++i) {
-                    v_error[i] = (v_vec_cpt[i] - v_vec_ref[i]).norm() / (v_vec_ref[i].norm() + 1e-15);
+                        v_error[i] = (v_vec_cpt[i] - v_vec_ref[i]).norm() /
+                                     (v_vec_ref[i].norm() + 1e-15);
+                    }
+                } catch (const std::exception &e) {
+                    Eigen::Vector4d temp = (Eigen::Vector4d::Random().array() + 1.0) / 2.0;
+                    temp[0] *= 1e-4;
+                    temp[1] *= 1e-4;
+                    temp[2] *= 1e-3;
+                    temp[3] *= 1e-2;
+
+                    auto v_new = std::vector<double>(temp.data(), temp.data() + temp.size
+                            ());
+                    double interp_arg=0.7;
+                    for(int i=0;i<v_error.size();++i){
+                        v_error[i]=v_error[i]*interp_arg+v_new[i]*(1-interp_arg);
+                    }
+
+                }
+
             }
 
             for (int i = 0; i < v_para_name.size(); ++i) {
                 ImGui::TextWrapped((v_para_name[i] + std::string("误差: %.5f %%")).c_str(),
                                    v_error[i]);
             }
-            }
 
         }
 
@@ -269,8 +351,9 @@ namespace ipc::rigid {
                     spdlog::info("output to: {}", output_dir);
                 }
                 for (int i = 0; i < m_state.state_sequence.size(); ++i) {
-                    int cur_loop = i+1;
-                    std::string write_file_name = output_dir + "/" + std::to_string(cur_loop) + ".txt";
+                    int cur_loop = i + 1;
+                    std::string write_file_name =
+                            output_dir + "/" + std::to_string(cur_loop) + ".txt";
                     auto cur_state = m_state.state_sequence[i];
                     auto disp_state = get_display_json(cur_state);
                     m_state.json2txt(write_file_name, disp_state);

src/viewer/Util.h

@@ -111,6 +111,11 @@ namespace ssim {
         return std::string(buffer);
     }
 
+    inline bool JudgeEndWith(const std::string &str, const std::string &suffix) {
+        if (suffix.size() > str.size()) return false;
+        return str.rfind(suffix) == str.size() - suffix.size();
+    }
+
 } // ssim
 
 #endif //EXAMPLE_UTIL_H