opencascade BRepTools::Read写到string内 BRepTools::Write

#include <BRepTools.hxx>
#include <TopoDS_Shape.hxx>
#include <sstream>

// 假设你有一个包含 BREP 数据的字符串
const char* brepString = 
    "DBRep_DrawableShape\n"
    "1\n"
    "0 0 0 0 1 0\n"
    "..."; // 实际的 BREP 格式内容

TopoDS_Shape ReadBRepFromString(const std::string& brepData) {
    TopoDS_Shape shape;
    std::istringstream iss(brepData); // 将字符串转换为输入流
    
    // 调用 BRepTools::Read 从流中读取数据
    BRepTools::Read(shape, iss, BRep_Builder());
    
    if (shape.IsNull()) {
        // 处理读取失败的情况
        throw std::runtime_error("Failed to read BREP from string.");
    }
    
    return shape;
}

// 使用示例
int main() {
    try {
        std::string brepData = brepString; // 你的 BREP 字符串
        TopoDS_Shape shape = ReadBRepFromString(brepData);
        // 使用 shape...
    } catch (const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
    }
    return 0;
}

#include <BRepTools.hxx>
#include <TopoDS_Shape.hxx>
#include <sstream>
#include <stdexcept>

// 将 TopoDS_Shape 写入 BREP 字符串
std::string WriteBRepToString(const TopoDS_Shape& shape) {
    std::ostringstream oss; // 创建输出流
    
    // 调用 BRepTools::Write 将形状写入流
    Standard_Boolean isSuccess = BRepTools::Write(shape, oss);
    
    if (!isSuccess) {
        throw std::runtime_error("Failed to write shape to BREP string.");
    }
    
    return oss.str(); // 提取字符串
}

// 使用示例
int main() {
    try {
        TopoDS_Shape shape; // 假设这是你的几何形状（如通过 BRepPrimAPI 创建的立方体）
        
        // 将形状写入字符串
        std::string brepString = WriteBRepToString(shape);
        
        // 输出 BREP 字符串（或保存到数据库/网络等）
        std::cout << "BREP Data:\n" << brepString << std::endl;
    } catch