PbMap.cpp

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2018, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */

/*  Plane-based Map (PbMap) library
 *  Construction of plane-based maps and localization in it from RGBD Images.
 *  Writen by Eduardo Fernandez-Moral. See docs for <a
 * href="group__mrpt__pbmap__grp.html" >mrpt-pbmap</a>
 */
#include "pbmap-precomp.h"  // Precompiled headers

#include <mrpt/pbmap.h>

#include <mrpt/serialization/CArchive.h>
#include <mrpt/io/CFileGZInputStream.h>
#include <mrpt/io/CFileGZOutputStream.h>
#include <pcl/io/io.h>
#include <pcl/io/pcd_io.h>

using namespace std;
using namespace mrpt::pbmap;

IMPLEMENTS_SERIALIZABLE(PbMap, CSerializable, mrpt::pbmap)

/*---------------------------------------------------------------
    Constructor
  ---------------------------------------------------------------*/
PbMap::PbMap()
    : FloorPlane(-1),
      globalMapPtr(new pcl::PointCloud<pcl::PointXYZRGBA>()),
      edgeCloudPtr(new pcl::PointCloud<pcl::PointXYZRGBA>),
      outEdgeCloudPtr(new pcl::PointCloud<pcl::PointXYZRGBA>)
{
}

uint8_t PbMap::serializeGetVersion() const { return 0; }
void PbMap::serializeTo(mrpt::serialization::CArchive& out) const
{
    // Write label
    out << label;

    // The data
    uint32_t n = uint32_t(vPlanes.size());
    out << n;
    //  cout << "Write " << n << " planes\n";
    for (uint32_t i = 0; i < n; i++) out << vPlanes[i];
}

void PbMap::serializeFrom(mrpt::serialization::CArchive& in, uint8_t version)
{
    switch (version)
    {
        case 0:
        {
            // Read label
            in >> label;

            // Delete previous content:
            vPlanes.clear();

            // The data
            // First, write the number of planes:
            uint32_t n;
            in >> n;
            vPlanes.resize(n);
            for (uint32_t i = 0; i < n; i++)
            {
                Plane pl;
                pl.id = i;
                in >> pl;
                vPlanes[i] = pl;
            }
        }
        break;
        default:
            MRPT_THROW_UNKNOWN_SERIALIZATION_VERSION(version)
    };
}

void PbMap::savePbMap(string filePath)
{
    // Serialize PbMap
    mrpt::io::CFileGZOutputStream f(filePath + "/planes.pbmap");
    auto serialize_pbmap = mrpt::serialization::archiveFrom(f);
    serialize_pbmap << *this;
    f.close();

    pcl::io::savePCDFile(filePath + "/cloud.pcd", *this->globalMapPtr);
}

void PbMap::loadPbMap(std::string filePath)
{
    // Read in the cloud data
    pcl::PCDReader reader;
    string PbMapFile = filePath;
    reader.read(PbMapFile.append("/cloud.pcd"), *(this->globalMapPtr));

    // Load Previous Map
    PbMapFile = filePath;
    mrpt::io::CFileGZInputStream f;
    if (f.open(PbMapFile.append("/planes.pbmap")))
    {
        auto serialized_pbmap = mrpt::serialization::archiveFrom(f);
        serialized_pbmap >> *this;
    }
    else
        cout << "Error: cannot open " << PbMapFile << "\n";
    f.close();

    //  std::cout << "Load PbMap from " << filePath << "\n";
}

// Merge two pbmaps.
void PbMap::MergeWith(PbMap& pbm, Eigen::Matrix4f& T)
{
    // Rotate and translate PbMap
    for (size_t i = 0; i < pbm.vPlanes.size(); i++)
    {
        Plane plane = pbm.vPlanes[i];
        //    Plane plane = &pbm.vPlanes[i]; //Warning: It modifies the
        //    source!!!

        // Transform normal and ppal direction
        plane.v3normal = T.block(0, 0, 3, 3) * plane.v3normal;
        plane.v3PpalDir = T.block(0, 0, 3, 3) * plane.v3PpalDir;

        // Transform centroid
        plane.v3center =
            T.block(0, 0, 3, 3) * plane.v3center + T.block(0, 3, 3, 1);

        // Transform convex hull points
        pcl::transformPointCloud(
            *plane.polygonContourPtr, *plane.polygonContourPtr, T);

        pcl::transformPointCloud(
            *plane.planePointCloudPtr, *plane.planePointCloudPtr, T);

        plane.id = vPlanes.size();

        vPlanes.push_back(plane);
    }

    // Rotate and translate the point cloud
    pcl::PointCloud<pcl::PointXYZRGBA>::Ptr alignedPointCloud(
        new pcl::PointCloud<pcl::PointXYZRGBA>);
    pcl::transformPointCloud(*pbm.globalMapPtr, *alignedPointCloud, T);

    *globalMapPtr += *alignedPointCloud;
}

#include <fstream>
// Print PbMap content to a text file
void PbMap::printPbMap(string txtFilePbm)
{
    cout << "PbMap 0.2\n\n";

    ofstream pbm;
    pbm.open(txtFilePbm.c_str());
    pbm << "PbMap 0.2\n\n";
    pbm << "MapPlanes " << vPlanes.size() << endl;
    for (unsigned i = 0; i < vPlanes.size(); i++)
    {
        pbm << " ID " << vPlanes[i].id << " obs " << vPlanes[i].numObservations;
        pbm << " areaVoxels " << vPlanes[i].areaVoxels << " areaHull "
            << vPlanes[i].areaHull;
        pbm << " ratioXY " << vPlanes[i].elongation << " structure "
            << vPlanes[i].bFromStructure << " label " << vPlanes[i].label;
        pbm << "\n normal\n"
            << vPlanes[i].v3normal << "\n center\n"
            << vPlanes[i].v3center;
        pbm << "\n PpalComp\n"
            << vPlanes[i].v3PpalDir << "\n RGB\n"
            << vPlanes[i].v3colorNrgb;
        pbm << "\n Neighbors (" << vPlanes[i].neighborPlanes.size() << "): ";
        for (map<unsigned, unsigned>::iterator it =
                 vPlanes[i].neighborPlanes.begin();
             it != vPlanes[i].neighborPlanes.end(); it++)
            pbm << it->first << " ";
        pbm << "\n CommonObservations: ";
        for (map<unsigned, unsigned>::iterator it =
                 vPlanes[i].neighborPlanes.begin();
             it != vPlanes[i].neighborPlanes.end(); it++)
            pbm << it->second << " ";
        pbm << "\n ConvexHull (" << vPlanes[i].polygonContourPtr->size()
            << "): \n";
        for (unsigned j = 0; j < vPlanes[i].polygonContourPtr->size(); j++)
            pbm << "\t" << vPlanes[i].polygonContourPtr->points[j].x << " "
                << vPlanes[i].polygonContourPtr->points[j].y << " "
                << vPlanes[i].polygonContourPtr->points[j].z << endl;
        pbm << endl;
    }
    pbm.close();
}