diff --git a/cpp_src/fbx_parse.cpp b/cpp_src/fbx_parse.cpp
index f22a8c4..ec808d2 100644
--- a/cpp_src/fbx_parse.cpp
+++ b/cpp_src/fbx_parse.cpp
@@ -7,9 +7,9 @@ using namespace std;
 
 extern "C" {
     // 定义给Rust调用的接口函数
-    void fbx_parse(const char* fbx_path) 
+    void fbx_parse(const FttContext* ctx) 
     {
-        printf("%s\n", fbx_path);
+        printf("%s\n", ctx->fbx_file);
         FbxManager* lSdkManager = FbxManager::Create();
         if (lSdkManager){
             printf("FbxManager created\n");
@@ -23,7 +23,7 @@ extern "C" {
             printf("FbxScene creation failed.\n");
         }
         FbxImporter* lImporter = FbxImporter::Create(lSdkManager, "");
-        bool s = lImporter->Initialize(fbx_path, -1, lSdkManager->GetIOSettings());
+        bool s = lImporter->Initialize(ctx->fbx_file, -1, lSdkManager->GetIOSettings());
         if (s){
             printf("FbxImporter initialized\n");
         } else{
@@ -34,16 +34,15 @@ extern "C" {
 
         FbxNode* lRootNode = lScene->GetRootNode();
         if (lRootNode) {
-            each_node(lRootNode, 0);
+            each_node(ctx, lRootNode, 0);
         } else {
             printf("No root node found in the scene.\n");
         }
     }
 
-    void load_fbx_mesh_to_db(const char* fbx_path) 
+    void load_fbx_mesh_to_db(const FttContext* ctx) 
     {
-        FbxNode* root = get_fbx_root_node(fbx_path);
-        
-        each_node(root, 0);
+        FbxNode* root = get_fbx_root_node(ctx->fbx_file);
+        each_node(ctx, root, 0);
     }
 }
diff --git a/cpp_src/fbx_wrap.cpp b/cpp_src/fbx_wrap.cpp
index abec411..6bc780d 100644
--- a/cpp_src/fbx_wrap.cpp
+++ b/cpp_src/fbx_wrap.cpp
@@ -55,7 +55,7 @@ FbxNode* get_fbx_root_node(const char* fbx_path)
 }
 
 
-void each_node(FbxNode* parent_node, int level) 
+void each_node(const FttContext* ctx, FbxNode* parent_node, int level) 
 {
     // info
     print_node_info(parent_node, level);
@@ -67,12 +67,8 @@ void each_node(FbxNode* parent_node, int level)
         {
             std::vector<Triangle> triangles;
             int count = load_triangles(attr, triangles);
-            printf("triangles: %ld;", triangles.size());
-            std::cout << "(" 
-              << get<0>(triangles[0]) << ", "
-              << get<1>(triangles[0]) << ", "
-              << get<2>(triangles[0]) << ")"
-              << std::endl;
+            printf("triangles: %ld\n", triangles.size());
+            // save data to database
         }
         
     }
@@ -83,7 +79,7 @@ void each_node(FbxNode* parent_node, int level)
         for (int i = 0; i < parent_node->GetChildCount(); i++) 
         {
             FbxNode* child = parent_node->GetChild(i);
-            each_node(child, level + 1);
+            each_node(ctx, child, level + 1);
         }
     }
 }
diff --git a/cpp_src/include/fbx_wrap.h b/cpp_src/include/fbx_wrap.h
index 3e58362..174beed 100644
--- a/cpp_src/include/fbx_wrap.h
+++ b/cpp_src/include/fbx_wrap.h
@@ -1,14 +1,12 @@
 #include <fbxsdk.h>
 #include <vector>
+#include <tools.h>
+#include <tuple>
 
 using namespace std;
 
 using Triangle = std::tuple<int, int, int>;
 
-struct Context {
-    
-};
-
 /**
  * 递归遍历FBX节点树结构
  * @param parent_node 起始父节点，从此节点开始向下遍历（若为nullptr则函数不执行任何操作）
@@ -16,7 +14,7 @@ struct Context {
  * @note 函数内部会递归访问parent_node的所有直接子节点和间接子节点
  * @warning 若输入的parent_node无效（如野指针）可能导致程序崩溃
  */
-void each_node(FbxNode* parent_node, int level);
+void each_node(const FttContext* ctx, FbxNode* parent_node, int level);
 /**
  * 打印FBX节点的基本信息（含层级缩进）
  * @param node 待打印信息的节点指针（nullptr时输出警告日志）
diff --git a/cpp_src/include/tools.h b/cpp_src/include/tools.h
new file mode 100644
index 0000000..d829ffb
--- /dev/null
+++ b/cpp_src/include/tools.h
@@ -0,0 +1,5 @@
+
+typedef struct {
+    char* fbx_file;
+    char* out_dir;
+} FttContext;
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index cc043b0..cddae0a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,19 +1,39 @@
+use std::{ffi::CString, os::raw::c_char};
+
 fn main() {
-    convert_fbx_to_3dtiles("/mnt/f/BaiduNetdiskDownload/绿科模型/绿科-三维视图-{三维}111.fbx");
+    convert_fbx_to_3dtiles("/root/data/绿科-三维视图-{三维}111.fbx", "/root/data/out");
+}
+
+#[repr(C)]
+pub struct FttContext {
+    pub fbx_file: *mut c_char,
+    pub out_dir: *mut c_char
 }
 
 
 unsafe extern "C" {
     pub unsafe fn fbx_parse(name_in: *const u8);
-    pub unsafe fn load_fbx_mesh_to_db(path: *const u8);
+    pub unsafe fn load_fbx_mesh_to_db(ctx: *const FttContext);
 }
 
-fn convert_fbx_to_3dtiles(fbx_path: &str) {
+fn convert_fbx_to_3dtiles(fbx_path: &str, out_dir: &str) {
+
+    
+    let ctx = &FttContext{
+        fbx_file: CString::new(fbx_path).unwrap().into_raw(),
+        out_dir: CString::new(out_dir).unwrap().into_raw()
+    };
 
     unsafe  {
         // fbx_parse(fbx_path.as_ptr() as *const u8);
         // 1. load to disk
-        load_fbx_mesh_to_db(fbx_path.as_ptr() as *const u8);
+        // fbx_path.as_ptr() as *const u8
+        load_fbx_mesh_to_db(ctx);
+
+
+        // free
+        let _ = CString::from_raw(ctx.fbx_file);
+        let _ = CString::from_raw(ctx.out_dir);
     }
 
     // unsafe {