144 lines
5.1 KiB
C++
144 lines
5.1 KiB
C++
/********************************************************
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* ██████╗ ██████╗████████╗██╗
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* ██╔════╝ ██╔════╝╚══██╔══╝██║
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* ██║ ███╗██║ ██║ ██║
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* ██║ ██║██║ ██║ ██║
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* ╚██████╔╝╚██████╗ ██║ ███████╗
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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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* Geophysical Computational Tools & Library (GCTL)
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*
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* Copyright (c) 2023 Yi Zhang (yizhang-geo@zju.edu.cn)
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*
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* GCTL is distributed under a dual licensing scheme. You can redistribute
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* it and/or modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, either version 2
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* of the License, or (at your option) any later version. You should have
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* received a copy of the GNU Lesser General Public License along with this
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* program. If not, see <http://www.gnu.org/licenses/>.
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*
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* If the terms and conditions of the LGPL v.2. would prevent you from using
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* the GCTL, please consider the option to obtain a commercial license for a
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* fee. These licenses are offered by the GCTL's original author. As a rule,
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* licenses are provided "as-is", unlimited in time for a one time fee. Please
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* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
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* to include some description of your company and the realm of its activities.
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* Also add information on how to contact you by electronic and paper mail.
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******************************************************/
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#ifndef _GCTL_OFF_IO_H
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#define _GCTL_OFF_IO_H
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#include "../poly/triangle.h"
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#include "file_io.h"
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namespace gctl
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{
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template <typename E, typename A>
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void read_off_acsii(std::string filename, array<vertex<point3dc, E>> &nodes,
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array<type_triangle<A>> &facets)
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{
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std::ifstream infile;
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open_infile(infile, filename, ".off");
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std::string tmp_str;
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std::stringstream tmp_ss;
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// read head info
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do
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{
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std::getline(infile, tmp_str);
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if (tmp_str[0] != '#' && tmp_str != "OFF")
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{
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throw runtime_error("Invalid file format: " + tmp_str + ". From read_Geomview_off(...)");
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}
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}
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while (tmp_str[0] == '#');
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// read vertex and facet count
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int vert_num = -1, facet_num = -1, edge_num = -1;
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do
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{
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std::getline(infile, tmp_str);
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if (tmp_str[0] != '#')
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{
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str2ss(tmp_str, tmp_ss);
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tmp_ss >> vert_num >> facet_num >> edge_num;
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if (tmp_ss.fail() || vert_num <= 0 || facet_num <= 0 || edge_num < 0)
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{
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throw runtime_error("Invalid file format: " + tmp_str + ". From read_Geomview_off(...)");
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}
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}
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}
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while (tmp_str[0] == '#');
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// read vertexes
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nodes.resize(vert_num);
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int i = 0;
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do
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{
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std::getline(infile, tmp_str);
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if (tmp_str[0] != '#')
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{
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str2ss(tmp_str, tmp_ss);
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tmp_ss >> nodes[i].x >> nodes[i].y >> nodes[i].z;
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nodes[i].id = i;
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if (tmp_ss.fail())
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{
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throw runtime_error("Invalid file format: " + tmp_str + ". From read_Geomview_off(...)");
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}
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i++;
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}
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}
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while (i < vert_num);
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// read triangular facets
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facets.resize(facet_num);
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int vert_count, tmp_id[3];
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i = 0;
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do
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{
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std::getline(infile, tmp_str);
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if (tmp_str[0] != '#')
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{
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str2ss(tmp_str, tmp_ss);
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tmp_ss >> vert_count >> tmp_id[0] >> tmp_id[1] >> tmp_id[2];
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if (tmp_ss.fail() || vert_count != 3)
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{
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throw runtime_error("Invalid file format: " + tmp_str + ". From read_Geomview_off(...)");
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}
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facets[i].set(nodes[tmp_id[0]], nodes[tmp_id[1]], nodes[tmp_id[2]], i);
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i++;
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}
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}
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while (i < facet_num);
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infile.close();
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return;
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}
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template <typename E, typename A>
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void save_off_ascii(std::string filename, const array<vertex<point3dc, E>> &nodes,
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const array<type_triangle<A>> &facets)
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{
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std::ofstream outfile;
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open_outfile(outfile, filename, ".off");
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outfile << "OFF\n#vertex_number facet_number edge_number\n";
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outfile << nodes.size() << " " << facets.size() << " 0\n";
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outfile << "#vertex_list\n";
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for (int i = 0; i < nodes.size(); i++)
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{
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outfile << nodes[i].x << " " << nodes[i].y << " " << nodes[i].z << std::endl;
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}
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outfile << "#facet_list\n";
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outfile << "#vertex_number vertex_id1 vertex_id2 ...\n";
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for (int i = 0; i < facets.size(); i++)
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{
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outfile << "3 " << facets[i].vert[0]->id << " " << facets[i].vert[1]->id << " " << facets[i].vert[2]->id << std::endl;
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}
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outfile.close();
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return;
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}
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};
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#endif // _GCTL_OFF_IO_H
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