Tutorial_101_PointCloud/main.cpp

This example shows how to create a point cloud from a set of points

/********************************************************************
 * Copyright (C) 2015 Liangliang Nan <liangliang.nan@gmail.com>
 * https://3d.bk.tudelft.nl/liangliang/
 *
 * This file is part of Easy3D. If it is useful in your research/work,
 * I would be grateful if you show your appreciation by citing it:
 * ------------------------------------------------------------------
 *      Liangliang Nan.
 *      Easy3D: a lightweight, easy-to-use, and efficient C++ library
 *      for processing and rendering 3D data.
 *      Journal of Open Source Software, 6(64), 3255, 2021.
 * ------------------------------------------------------------------
 *
 * Easy3D is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License Version 3
 * as published by the Free Software Foundation.
 *
 * Easy3D is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 ********************************************************************/
 
#include <easy3d/core/point_cloud.h>
#include <easy3d/util/initializer.h>
 
using namespace easy3d;
 
 
int main(int argc, char** argv) {
    // initialize Easy3D.
    initialize();
 
    // Create a point cloud
    auto cloud = new PointCloud;
 
    // Add some points. Here we add 100 points on a 10*10 grid.
    for (int i=-5; i<5; ++i) {
        for (int j = -5; j < 5; ++j)
            cloud->add_vertex(vec3(static_cast<float>(i), static_cast<float>(j), 0));// z = 0: all points are on XY plane
    }
    std::cout << "point cloud has " << cloud->n_vertices() << " points" << std::endl;
 
    // Delete the point cloud (i.e., release memory)
    delete cloud;
 
    return EXIT_SUCCESS;
}