From 480a4df6fc9e3d1086039735f1625fbc2d5dca0e Mon Sep 17 00:00:00 2001 From: vrouvrea Date: Mon, 2 Mar 2015 15:07:38 +0000 Subject: Add of hyper sphere and cube generator of OFF files. git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/alphashapes@473 636b058d-ea47-450e-bf9e-a15bfbe3eedb Former-commit-id: 894167c2f2ab6e9f209b35adb8d362b09c6eeec5 --- data/points/generator/CMakeLists.txt | 21 +++++ data/points/generator/README | 26 +++++++ data/points/generator/hypergenerator.cpp | 129 +++++++++++++++++++++++++++++++ 3 files changed, 176 insertions(+) create mode 100644 data/points/generator/CMakeLists.txt create mode 100644 data/points/generator/README create mode 100644 data/points/generator/hypergenerator.cpp (limited to 'data/points/generator') diff --git a/data/points/generator/CMakeLists.txt b/data/points/generator/CMakeLists.txt new file mode 100644 index 00000000..42f3e3ee --- /dev/null +++ b/data/points/generator/CMakeLists.txt @@ -0,0 +1,21 @@ +cmake_minimum_required(VERSION 2.6) +project(GUDHIPointsGenerator) + +if(CGAL_FOUND) + include( ${CGAL_USE_FILE} ) + + find_package(Eigen3 3.1.0) + if (EIGEN3_FOUND) + include( ${EIGEN3_USE_FILE} ) + include_directories (BEFORE "../../include") + + add_executable ( hypergenerator hypergenerator.cpp ) + add_test(hypergenerator_on_sphere_3000_10_5.0 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator on sphere onSphere.off 3000 10 5.0) + add_test(hypergenerator_on_sphere_10000_3 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator on sphere onSphere.off 10000 3) + add_test(hypergenerator_in_sphere_7000_12_10.8 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in sphere inSphere.off 7000 12 10.8) + add_test(hypergenerator_in_sphere_50000_2 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in sphere inSphere.off 50000 2) + # on cube is not available in CGAL + add_test(hypergenerator_in_cube_7000_12_10.8 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in cube inCube.off 7000 12 10.8) + add_test(hypergenerator_in_cube_50000_2 ${CMAKE_CURRENT_BINARY_DIR}/hypergenerator in cube inCube.off 50000 2) + endif() +endif() diff --git a/data/points/generator/README b/data/points/generator/README new file mode 100644 index 00000000..e6b28eb0 --- /dev/null +++ b/data/points/generator/README @@ -0,0 +1,26 @@ +To build the example, run in a Terminal: + +cd /path-to-gudhi/ +cmake . +cd /path-to-data-generator/ +make + + +Example of use : + +*** Hyper sphere|cube generator + +./hypergenerator on sphere onSphere.off 1000 3 15.2 + + => generates a onSphere.off file with 1000 points randomized on a sphere of dimension 3 and radius 15.2 + +./hypergenerator in sphere inSphere.off 100 2 + + => generates a inSphere.off file with 100 points randomized in a sphere of dimension 2 (circle) and radius 1.0 (default) + +./hypergenerator in cube inCube.off 10000 3 5.8 + + => generates a inCube.off file with 10000 points randomized in a cube of dimension 3 and side 5.8 + +!! Warning: hypegenerator on cube is not available !! + diff --git a/data/points/generator/hypergenerator.cpp b/data/points/generator/hypergenerator.cpp new file mode 100644 index 00000000..f4ea6b07 --- /dev/null +++ b/data/points/generator/hypergenerator.cpp @@ -0,0 +1,129 @@ +/* This file is part of the Gudhi Library. The Gudhi library + * (Geometric Understanding in Higher Dimensions) is a generic C++ + * library for computational topology. + * + * Author(s): Vincent Rouvreau + * + * Copyright (C) 2014 INRIA Saclay (France) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 . + */ + +#include +#include +#include +#include + +#include +#include +#include +#include // for std::ofstream + + +typedef CGAL::Epick_d< CGAL::Dynamic_dimension_tag > K; +typedef K::Point_d Point; + +void usage(char * const progName) { + std::cerr << "Usage: " << progName << " in|on sphere|cube off_file_name points_number[integer > 0] dimension[integer > 1] radius[double > 0.0 | default = 1.0]" << std::endl; + exit(-1); // ----- >> +} + +int main(int argc, char **argv) { + // program args management + if ((argc != 6) && (argc != 7)) { + std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl; + usage(argv[0]); + } + + int points_number = 0; + int returnedScanValue = sscanf(argv[4], "%d", &points_number); + if ((returnedScanValue == EOF) || (points_number <= 0)) { + std::cerr << "Error: " << argv[4] << " is not correct" << std::endl; + usage(argv[0]); + } + + int dimension = 0; + returnedScanValue = sscanf(argv[5], "%d", &dimension); + if ((returnedScanValue == EOF) || (dimension <= 0)) { + std::cerr << "Error: " << argv[5] << " is not correct" << std::endl; + usage(argv[0]); + } + + double radius = 1.0; + if (argc == 7) { + returnedScanValue = sscanf(argv[6], "%lf", &radius); + if ((returnedScanValue == EOF) || (radius <= 0.0)) { + std::cerr << "Error: " << argv[6] << " is not correct" << std::endl; + usage(argv[0]); + } + } + + bool in = false; + if (strcmp(argv[1], "in") == 0) { + in = true; + } else if (strcmp(argv[1], "on") != 0) { + std::cerr << "Error: " << argv[1] << " is not correct" << std::endl; + usage(argv[0]); + } + + bool sphere = false; + if (memcmp(argv[2], "sphere", sizeof("sphere")) == 0) { + sphere = true; + } else if (memcmp(argv[2], "cube", sizeof("cube")) != 0) { + std::cerr << "Error: " << argv[2] << " is not correct" << std::endl; + usage(argv[0]); + } + + std::ofstream diagram_out(argv[3]); + diagram_out << "OFF" << std::endl; + diagram_out << points_number << " 0 0" << std::endl; + + if (diagram_out.is_open()) { + // Instanciate a random point generator + CGAL::Random rng(0); + // Generate "points_number" random points in a vector + std::vector points; + if (in) { + if (sphere) { + CGAL::Random_points_in_ball_d rand_it(dimension, radius, rng); + CGAL::cpp11::copy_n(rand_it, points_number, std::back_inserter(points)); + } else { + CGAL::Random_points_in_cube_d rand_it(dimension, radius, rng); + CGAL::cpp11::copy_n(rand_it, points_number, std::back_inserter(points)); + } + } else { // means "on" + if (sphere) { + CGAL::Random_points_on_sphere_d rand_it(dimension, radius, rng); + CGAL::cpp11::copy_n(rand_it, points_number, std::back_inserter(points)); + } else { + std::cerr << "Sorry: on cube is not available" << std::endl; + usage(argv[0]); + } + } + + for (auto thePoint : points) { + int i = 0; + for (;i < dimension - 1; i++) { + diagram_out << thePoint[i] << " "; + } + diagram_out << thePoint[i] << std::endl; // last point + Carriage Return + } + } else { + std::cerr << "Error: " << argv[3] << " cannot be opened" << std::endl; + usage(argv[0]); + } + + return 0; +} + -- cgit v1.2.3