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#include <vector>
#include <thread>
#include <pcl/features/moment_of_inertia_estimation.h>
#include <pcl/io/pcd_io.h>
#include <pcl/point_types.h>
#include <pcl/visualization/cloud_viewer.h>
using namespace std::chrono_literals;
int main (int argc, char** argv)
{
if (argc != 2)
return (0);
pcl::PointCloud<pcl::PointXYZ>::Ptr cloud (new pcl::PointCloud<pcl::PointXYZ> ());
if (pcl::io::loadPCDFile (argv[1], *cloud) == -1)
return (-1);
pcl::MomentOfInertiaEstimation <pcl::PointXYZ> feature_extractor;
feature_extractor.setInputCloud (cloud);
feature_extractor.compute ();
std::vector <float> moment_of_inertia;
std::vector <float> eccentricity;
pcl::PointXYZ min_point_AABB;
pcl::PointXYZ max_point_AABB;
pcl::PointXYZ min_point_OBB;
pcl::PointXYZ max_point_OBB;
pcl::PointXYZ position_OBB;
Eigen::Matrix3f rotational_matrix_OBB;
float major_value, middle_value, minor_value;
Eigen::Vector3f major_vector, middle_vector, minor_vector;
Eigen::Vector3f mass_center;
feature_extractor.getMomentOfInertia (moment_of_inertia);
feature_extractor.getEccentricity (eccentricity);
feature_extractor.getAABB (min_point_AABB, max_point_AABB);
feature_extractor.getOBB (min_point_OBB, max_point_OBB, position_OBB, rotational_matrix_OBB);
feature_extractor.getEigenValues (major_value, middle_value, minor_value);
feature_extractor.getEigenVectors (major_vector, middle_vector, minor_vector);
feature_extractor.getMassCenter (mass_center);
pcl::visualization::PCLVisualizer::Ptr viewer (new pcl::visualization::PCLVisualizer ("3D Viewer"));
viewer->setBackgroundColor (0, 0, 0);
viewer->addCoordinateSystem (1.0);
viewer->initCameraParameters ();
viewer->addPointCloud<pcl::PointXYZ> (cloud, "sample cloud");
viewer->addCube (min_point_AABB.x, max_point_AABB.x, min_point_AABB.y, max_point_AABB.y, min_point_AABB.z, max_point_AABB.z, 1.0, 1.0, 0.0, "AABB");
viewer->setShapeRenderingProperties(pcl::visualization::PCL_VISUALIZER_REPRESENTATION, pcl::visualization::PCL_VISUALIZER_REPRESENTATION_WIREFRAME, "AABB");
Eigen::Vector3f position (position_OBB.x, position_OBB.y, position_OBB.z);
Eigen::Quaternionf quat (rotational_matrix_OBB);
viewer->addCube (position, quat, max_point_OBB.x - min_point_OBB.x, max_point_OBB.y - min_point_OBB.y, max_point_OBB.z - min_point_OBB.z, "OBB");
viewer->setShapeRenderingProperties(pcl::visualization::PCL_VISUALIZER_REPRESENTATION, pcl::visualization::PCL_VISUALIZER_REPRESENTATION_WIREFRAME, "OBB");
pcl::PointXYZ center (mass_center (0), mass_center (1), mass_center (2));
pcl::PointXYZ x_axis (major_vector (0) + mass_center (0), major_vector (1) + mass_center (1), major_vector (2) + mass_center (2));
pcl::PointXYZ y_axis (middle_vector (0) + mass_center (0), middle_vector (1) + mass_center (1), middle_vector (2) + mass_center (2));
pcl::PointXYZ z_axis (minor_vector (0) + mass_center (0), minor_vector (1) + mass_center (1), minor_vector (2) + mass_center (2));
viewer->addLine (center, x_axis, 1.0f, 0.0f, 0.0f, "major eigen vector");
viewer->addLine (center, y_axis, 0.0f, 1.0f, 0.0f, "middle eigen vector");
viewer->addLine (center, z_axis, 0.0f, 0.0f, 1.0f, "minor eigen vector");
while(!viewer->wasStopped())
{
viewer->spinOnce (100);
std::this_thread::sleep_for(100ms);
}
return (0);
}
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