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fbx_to_3dtiles
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dengqn 2025-09-10 10:58:37 +08:00
parent 691109e12a
commit 91b0644129
8 changed files with 143 additions and 72 deletions
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46
cpp_src/db_ops.cpp
View File

@ -51,6 +51,7 @@ void create_tables(sqlite3 *db)
const char *sql_vertices = R"(
CREATE TABLE IF NOT EXISTS vertices (
id INTEGER PRIMARY KEY AUTOINCREMENT,
vert_id INTEGER NOT NULL,
mesh_id INTEGER NOT NULL,
position_x REAL NOT NULL,
position_y REAL NOT NULL,
@ -117,7 +118,6 @@ void create_tables(sqlite3 *db)
}
}
// 函数定义
int save_mesh_to_table(FttContext *ctx,
sqlite3 *db,
@ -127,12 +127,14 @@ int save_mesh_to_table(FttContext* ctx,
const std::string &fbx_id)
{
if (!db || name.empty() || fbx_id.empty()) return -1;
if (!db || name.empty() || fbx_id.empty())
return -1;
sqlite3_stmt *stmt = nullptr;
const char *sql = "INSERT OR IGNORE INTO meshes (id, name, vertex_count, index_count, fbx_id) VALUES (?, ?, ?, ?, ?);";
int rc = sqlite3_prepare_v2(db, sql, -1, &stmt, nullptr);
if (rc != SQLITE_OK) {
if (rc != SQLITE_OK)
{
fprintf(stderr, "SQL prepare failed: %s\n", sqlite3_errmsg(db));
return rc;
}
@ -144,10 +146,46 @@ int save_mesh_to_table(FttContext* ctx,
sqlite3_bind_text(stmt, 5, fbx_id.c_str(), -1, SQLITE_STATIC);
rc = sqlite3_step(stmt);
if (rc != SQLITE_DONE && rc != SQLITE_CONSTRAINT) {
if (rc != SQLITE_DONE && rc != SQLITE_CONSTRAINT)
{
fprintf(stderr, "SQL step failed: %s\n", sqlite3_errmsg(db));
}
sqlite3_finalize(stmt);
return rc == SQLITE_DONE ? 0 : -1;
}
int save_mesh_vertices(FttContext *ctx, uint mesh_id, std::vector<V3> vertices) {
if (!ctx->db) return -1;
sqlite3_stmt *stmt = nullptr;
const char *sql = "INSERT OR IGNORE INTO vertices (mesh_id, vert_id, position_x, position_y, position_z) VALUES (?, ?, ?, ?, ?);";
int rc = sqlite3_prepare_v2(ctx->db, sql, -1, &stmt, nullptr);
if (rc != SQLITE_OK) {
fprintf(stderr, "SQL prepare failed: %s\n", sqlite3_errmsg(ctx->db));
return rc;
}
sqlite3_exec(ctx->db, "BEGIN TRANSACTION;", nullptr, nullptr, nullptr); // 开启事务
for (int i = 0; i < vertices.size(); i++) {
sqlite3_reset(stmt); // 重置语句
sqlite3_bind_int64(stmt, 1, mesh_id);
sqlite3_bind_int64(stmt, 2, i); // vert_id使用索引
sqlite3_bind_double(stmt, 3, std::get<0>(vertices[i])); // 修正为double类型绑定
sqlite3_bind_double(stmt, 4, std::get<1>(vertices[i]));
sqlite3_bind_double(stmt, 5, std::get<2>(vertices[i]));
rc = sqlite3_step(stmt);
if (rc != SQLITE_DONE && rc != SQLITE_CONSTRAINT) {
fprintf(stderr, "SQL step failed at vertex %d: %s\n", i, sqlite3_errmsg(ctx->db));
sqlite3_exec(ctx->db, "ROLLBACK;", nullptr, nullptr, nullptr);
sqlite3_finalize(stmt);
return rc;
}
}
sqlite3_exec(ctx->db, "COMMIT;", nullptr, nullptr, nullptr); // 提交事务
sqlite3_finalize(stmt);
return 0;
}

34
cpp_src/fbx_parse.cpp
View File

@ -6,37 +6,50 @@
using namespace std;
extern "C" {
extern "C"
{
// 定义给Rust调用的接口函数
void fbx_parse(FttContext *ctx)
{
printf("%s\n", ctx->fbx_file);
FbxManager *lSdkManager = FbxManager::Create();
if (lSdkManager){
if (lSdkManager)
{
printf("FbxManager created\n");
} else{
}
else
{
printf("FbxManager creation failed.\n");
}
FbxScene *lScene = FbxScene::Create(lSdkManager, "myScene");
if (lScene){
if (lScene)
{
printf("FbxScene created\n");
} else{
}
else
{
printf("FbxScene creation failed.\n");
}
FbxImporter *lImporter = FbxImporter::Create(lSdkManager, "");
bool s = lImporter->Initialize(ctx->fbx_file, -1, lSdkManager->GetIOSettings());
if (s){
if (s)
{
printf("FbxImporter initialized\n");
} else{
}
else
{
printf("FbxImporter initialization failed.\n");
}
lImporter->Import(lScene);
lImporter->Destroy();
FbxNode *lRootNode = lScene->GetRootNode();
if (lRootNode) {
if (lRootNode)
{
each_node(ctx, lRootNode, 0);
} else {
}
else
{
printf("No root node found in the scene.\n");
}
}
@ -50,7 +63,8 @@ extern "C" {
// 按fbx名称生成 ${ctx.out_dir}/sqlite3.db
// 初始化db赋值到ctx.db
sqlite3 *db = create_db((std::string(ctx->out_dir) + "/db.sqlite3").c_str(), true);
if (db == NULL) {
if (db == NULL)
{
return;
}
mut_ctx->db = db;

47
cpp_src/fbx_wrap.cpp
View File

@ -6,20 +6,26 @@
using namespace std;
int load_triangles(fbxsdk::FbxNodeAttribute* attr, std::vector<V3>& indices, std::vector<V3>& triangles) {
if (!attr || attr->GetAttributeType() != FbxNodeAttribute::eMesh) return false;
int load_triangles(fbxsdk::FbxNodeAttribute *attr, std::vector<V3> &indices, std::vector<V3> &triangles)
{
if (!attr || attr->GetAttributeType() != FbxNodeAttribute::eMesh)
return false;
FbxMesh *mesh = static_cast<FbxMesh *>(attr);
int polyCount = mesh->GetPolygonCount();
for (int i = 0; i < polyCount; ++i) {
for (int i = 0; i < polyCount; ++i)
{
int vertexCount = mesh->GetPolygonSize(i);
std::vector<int> polyIndices;
for (int j = 0; j < vertexCount; ++j) {
for (int j = 0; j < vertexCount; ++j)
{
polyIndices.push_back(mesh->GetPolygonVertex(i, j));
}
for (int j = 2; j < vertexCount; ++j) {
for (int j = 2; j < vertexCount; ++j)
{
indices.push_back({polyIndices[0], polyIndices[j - 1], polyIndices[j]});
for (int k : {0, j-1, j}) {
for (int k : {0, j - 1, j})
{
FbxVector4 pos = mesh->GetControlPointAt(polyIndices[k]);
triangles.push_back({(float)pos[0], (float)pos[1], (float)pos[2]});
}
@ -32,22 +38,31 @@ FbxNode* get_fbx_root_node(const char* fbx_path)
{
printf("loading fbx file: %s\n", fbx_path);
FbxManager *lSdkManager = FbxManager::Create();
if (lSdkManager){
if (lSdkManager)
{
printf("FbxManager created successfully.\n");
} else{
}
else
{
printf("FbxManager creation failed.\n");
}
FbxScene *lScene = FbxScene::Create(lSdkManager, "myScene");
if (lScene){
if (lScene)
{
printf("FbxScene created successfully.\n");
} else{
}
else
{
printf("FbxScene creation failed.\n");
}
FbxImporter *lImporter = FbxImporter::Create(lSdkManager, "");
bool s = lImporter->Initialize(fbx_path, -1, lSdkManager->GetIOSettings());
if (s){
if (s)
{
printf("FbxImporter initialized successfully.\n");
} else{
}
else
{
printf("FbxImporter initialization failed.\n");
}
lImporter->Import(lScene);
@ -56,7 +71,6 @@ FbxNode* get_fbx_root_node(const char* fbx_path)
return lScene->GetRootNode();
}
void each_node(FttContext *ctx, FbxNode *parent_node, int level)
{
// info
@ -71,7 +85,7 @@ void each_node(FttContext* ctx, FbxNode* parent_node, int level)
std::vector<V3> triangles;
int count = load_triangles(attr, vertices, triangles);
uint id = attr->GetUniqueID();
printf("[%ld]triangles: %ld\n", id, triangles.size());
printf("[%d]triangles: %ld\n", id, triangles.size());
// save data to database
sqlite3 *db = ctx->db;
// todo save mesh into db
@ -81,8 +95,9 @@ void each_node(FttContext* ctx, FbxNode* parent_node, int level)
attr->GetName(),
vertices.size(), triangles.size(),
parent_node->GetNameOnly().Buffer());
}
save_mesh_vertices(ctx, id, vertices);
}
}
// children
@ -105,5 +120,5 @@ void print_node_info(FbxNode* node, int level)
printf("-");
}
printf("> ");
printf("[%ld]: %s\n", node->GetUniqueID(), node->GetNameOnly().Buffer());
printf("[%lld]: %s\n", node->GetUniqueID(), node->GetNameOnly().Buffer());
}

2
cpp_src/include/db_ops.h
View File

@ -33,3 +33,5 @@ void create_tables(sqlite3* db);
* 2. 内部自动处理事务，重复name会触发唯一键冲突
*/
int save_mesh_to_table(FttContext* ctx, sqlite3 *db, uint id, const std::string &name, int vertex_count, int index_count, const std::string &fbx_id);
int save_mesh_vertices(FttContext* ctx, uint mesh_id, std::vector<V3> vertices);

1
cpp_src/include/fbx_wrap.h
View File

@ -2,7 +2,6 @@
using namespace std;
using V3 = std::tuple<int, int, int>;
/**
* 递归遍历FBX节点树结构

2
cpp_src/include/tools.h
View File

@ -17,6 +17,8 @@ typedef struct {
sqlite3* db;
} FttContext;
using V3 = std::tuple<int, int, int>;
FttContext ctx_from_const(const FttContext* ctx);
#endif

3
cpp_src/tools.cpp
View File

@ -1,6 +1,7 @@
#include <tools.h>
FttContext ctx_from_const(const FttContext* ctx) {
FttContext ctx_from_const(const FttContext *ctx)
{
FttContext mut_ctx;
mut_ctx.db = ctx->db;

4
src/main.rs
View File

@ -1,8 +1,8 @@
use std::{ffi::CString, os::raw::c_char};
fn main() {
convert_fbx_to_3dtiles("/root/src/fbx_to_3dtiles/out/绿科-三维视图-{三维}111.fbx",
"/root/src/fbx_to_3dtiles/out/lk");
convert_fbx_to_3dtiles("./out/绿科-三维视图-{三维}111.fbx",
"./out/lk");
}
#[repr(C)]