examTriangleMesh.cpp

Go to the documentation of this file.

/*M///////////////////////////////////////////////////////////////////////////////////////
//
//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
//  By downloading, copying, installing or using the software you agree to this license.
//  If you do not agree to this license, do not download, install, copy or use the software.
//
//
//                           License Agreement
//                For Open Source Digital Holographic Library
//
// Openholo library is free software;
// you can redistribute it and/or modify it under the terms of the BSD 2-Clause license.
//
// Copyright (C) 2017-2024, Korea Electronics Technology Institute. All rights reserved.
// E-mail : contact.openholo@gmail.com
// Web : http://www.openholo.org
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//  1. Redistribution's of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//
//  2. Redistribution's in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the copyright holder or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
// This software contains opensource software released under GNU Generic Public License,
// NVDIA Software License Agreement, or CUDA supplement to Software License Agreement.
// Check whether software you use contains licensed software.
//
//M*/

#include <iostream>
#include <string>
#include <filesystem>
#include <ctime>

#include "ophTriMesh.h"

namespace fs = std::experimental::filesystem;

int main() {
    // Create ophTri instance
    ophTri* Hologram = new ophTri();

    std::string proj_dir = fs::current_path().generic_string();
    std::string conf_file = proj_dir + "/../dataset/Dice/TriangleMesh/Dice_TriMesh.xml";

    // Read Config Parameters for Triangle Mesh CGH
    if (!Hologram->readConfig(conf_file.c_str())) {
        std::cerr << "Fail to load Config file : " << conf_file << std::endl;
        exit(1);
    }

    // Read the Meshed object data
    std::string tm_file = proj_dir + "/../dataset/Dice/TriangleMesh/dice.ply";
    if (!Hologram->loadMeshData(tm_file.c_str(), "ply")) {
        std::cerr << "Fail to load Triangle Mesh file : " << tm_file << std::endl;
        exit(1);
    }

    // Generate the hologram
    Hologram->generateHologram(Hologram->SHADING_FLAT);

    // Save to ohc(Openholo complex field file format)
    std::string res_path = "./result/";
    if (!fs::exists(res_path)) {
        fs::create_directories(res_path);
    }

    //
    time_t cur_time = time(nullptr);

    struct tm local;
#ifdef _MSC_VER
    localtime_s(&local, &cur_time);
#else
    localtime_r(&cur_time, &local);
#endif

    char buff[32];
#ifdef _MSC_VER
    sprintf_s(buff, "%4d%02d%02d-%02d%02d%02d",
        local.tm_year + 1900, local.tm_mon + 1, local.tm_mday,
        local.tm_hour, local.tm_min, local.tm_sec);
#else
    sprintf(buff, "%4d%02d%02d-%02d%02d%02d",
        local.tm_year + 1900, local.tm_mon + 1, local.tm_mday,
        local.tm_hour, local.tm_min, local.tm_sec);
#endif

    std::string ohc_file = res_path + "tm_sample_" + std::string(buff) + ".ohc";
    if (!Hologram->saveAsOhc(ohc_file.c_str())) {
        std::cerr << "Fail to save OHC file : " << ohc_file << std::endl;
        exit(1);
    }

    // Encode Complex Field to Real Field
    Hologram->encoding(Hologram->ENCODE_SIMPLENI);

    // Normalize Real Field to unsigned char(0~255) for save to image(*.BMP)
    Hologram->normalize();

    // Save the encoded hologram image
    ivec2 m_vecEncodeSize = Hologram->getEncodeSize();  // Get encoded hologram size
    std::string bmp_file = res_path + "tm_sample_" + std::string(buff) + ".bmp";
    if (!Hologram->save(bmp_file.c_str(), 8, nullptr, m_vecEncodeSize[_X], m_vecEncodeSize[_Y])) {
        std::cerr << "Fail to save BMP file : " << bmp_file << std::endl;
        exit(1);
    }

    // Release memory used to Generate Triangle Mesh
    Hologram->release();

    return 0;
}