src/tools/lvr2_cl_normals/Main.cpp

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#include <boost/filesystem.hpp>
 
#include "lvr2/reconstruction/opencl/ClSurface.hpp"
 
#include "lvr2/geometry/HalfEdgeMesh.hpp"
 
#include "lvr2/reconstruction/PointsetSurface.hpp"
#include "lvr2/reconstruction/PointsetGrid.hpp"
#include "lvr2/reconstruction/AdaptiveKSearchSurface.hpp"
#include "lvr2/reconstruction/FastReconstruction.hpp"
#include "lvr2/reconstruction/BilinearFastBox.hpp"
 
#include "lvr2/io/ModelFactory.hpp"
#include "lvr2/io/Timestamp.hpp"
#include "lvr2/io/IOUtils.hpp"
#include "Options.hpp"
 
 
using namespace lvr2;
 
void computeNormals(string filename, cl_normals::Options& opt, PointBufferPtr& buffer)
{
    ModelPtr model = ModelFactory::readModel(filename);
    size_t num_points;
 
    floatArr points;
    if (model && model->m_pointCloud )
    {
        num_points = model->m_pointCloud->numPoints();
        points = model->m_pointCloud->getPointArray();
        cout << timestamp << "Read " << num_points << " points from " << filename << endl;
    }
    else
    {
        cout << timestamp << "Warning: No point cloud data found in " << filename << endl;
        return;
    }
 
    floatArr normals = floatArr(new float[ num_points * 3 ]);
 
    cout << timestamp << "Constructing kd-tree..." << endl;
    ClSurface gpu_surface(points, num_points);
    cout << timestamp << "Finished kd-tree construction." << endl;
 
    gpu_surface.setKn(opt.kn());
    gpu_surface.setKi(opt.ki());
 
    if(opt.useRansac())
    {
        gpu_surface.setMethod("RANSAC");
    } else
    {
        gpu_surface.setMethod("PCA");
    }
    gpu_surface.setFlippoint(opt.flipx(), opt.flipy(), opt.flipz());
 
    cout << timestamp << "Start Normal Calculation..." << endl;
    gpu_surface.calculateNormals();
 
    gpu_surface.getNormals(normals);
    cout << timestamp << "Finished Normal Calculation. " << endl;
 
    buffer->setPointArray(points, num_points);
    buffer->setNormalArray(normals, num_points);
 
    gpu_surface.freeGPU();
}
 
void reconstructAndSave(PointBufferPtr& buffer, cl_normals::Options& opt)
{
    // RECONSTRUCTION
    // PointsetSurface
    PointsetSurfacePtr<Vec> surface;
    surface = PointsetSurfacePtr<Vec>( new AdaptiveKSearchSurface<Vec>(buffer,
        "FLANN",
        opt.kn(),
        opt.ki(),
        opt.kd(),
        1
    ) );
 
 
    // // Create an empty mesh
    HalfEdgeMesh<Vec> mesh;
 
    float resolution = opt.getVoxelsize();
 
    auto grid = std::make_shared<PointsetGrid<Vec, BilinearFastBox<Vec>>>(
        resolution,
        surface,
        surface->getBoundingBox(),
        true,
        true
    );
 
    grid->calcDistanceValues();
 
    auto reconstruction = make_unique<FastReconstruction<Vec, BilinearFastBox<Vec>>>(grid);
    reconstruction->getMesh(mesh);
 
 
    SimpleFinalizer<Vec> fin;
    MeshBufferPtr res = fin.apply(mesh);
 
    ModelPtr m( new Model( res ) );
 
    cout << timestamp << "Saving mesh." << endl;
    ModelFactory::saveModel( m, "triangle_mesh.ply");
}
 
int main(int argc, char** argv){
 
 
    cl_normals::Options opt(argc, argv);
    cout << opt << endl;
 
 
    boost::filesystem::path inFile(opt.inputFile());
 
    if(boost::filesystem::is_directory(inFile))
    {
        vector<float> all_points;
        vector<float> all_normals;
 
        boost::filesystem::directory_iterator lastFile;
        for(boost::filesystem::directory_iterator it(inFile); it != lastFile; it++ )
        {
            boost::filesystem::path p = boost::filesystem::canonical(it->path());
            string currentFile = p.filename().string();
 
            if(string(p.extension().string().c_str()) == ".3d")
            {
                // Check for naming convention "scanxxx.3d"
                int num = 0;
                if(sscanf(currentFile.c_str(), "scan%3d", &num))
                {
                    cout << timestamp << "Processing " << p.string() << endl;
                    PointBufferPtr buffer(new PointBuffer);
 
                    computeNormals(p.string(), opt, buffer);
                    transformPointCloudAndAppend(buffer, p, all_points, all_normals);
 
                }
            }
        }
 
        if(!opt.reconstruct() || opt.exportPointNormals() )
        {
            writePointsAndNormals(all_points, all_normals, opt.outputFile());
        }
 
        if(opt.reconstruct() )
        {
            PointBufferPtr buffer(new PointBuffer);
 
            floatArr points = floatArr(&all_points[0]);
            size_t num_points = all_points.size() / 3;
 
            floatArr normals = floatArr(&all_normals[0]);
            size_t num_normals = all_normals.size() / 3;
 
            buffer->setPointArray(points, num_points);
            buffer->setNormalArray(normals, num_normals);
 
            reconstructAndSave(buffer, opt);
        }
 
    }
    else
    {
        PointBufferPtr buffer(new PointBuffer);
        computeNormals(opt.inputFile(), opt, buffer);
 
        if(!opt.reconstruct() || opt.exportPointNormals() )
        {
            ModelPtr out_model(new Model(buffer));
            ModelFactory::saveModel(out_model, opt.outputFile());
        }
 
        if(opt.reconstruct())
        {
            reconstructAndSave(buffer, opt);
        }
 
    }
 
 
}