tmp
This commit is contained in:
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0f4a1090d9
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@ -32,4 +32,5 @@ add_example(process_ex OFF)
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add_example(array_ex OFF)
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add_example(gmt_ex OFF)
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add_example(gnuplot_ex OFF)
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add_example(stl_io_ex OFF)
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add_example(stl_io_ex OFF)
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add_example(ply_io_ex ON)
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44
example/ply_io_ex.cpp
Normal file
44
example/ply_io_ex.cpp
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@ -0,0 +1,44 @@
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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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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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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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#include "../lib/core.h"
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#include "../lib/io.h"
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using namespace gctl;
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int main(int argc, char const *argv[]) try
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{
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array<vertex3dc> nodes;
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array<triangle> tris;
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read_ply_binary("tmp_binary", nodes, tris);
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save_ply_ascii("tmp", nodes, tris);
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return 0;
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}
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catch(std::exception &e)
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{
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GCTL_ShowWhatError(e.what(), GCTL_ERROR_ERROR, 0, 0, 0);
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}
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1
lib/io.h
1
lib/io.h
@ -39,5 +39,6 @@
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#include "io/triangle_io.h"
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#include "io/off_io.h"
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#include "io/stl_io.h"
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#include "io/ply_io.h"
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#endif // _GCTL_IO_H
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@ -36,7 +36,7 @@
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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_Geomview_off(std::string filename, array<vertex<point3dc, E>> &nodes,
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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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@ -120,7 +120,7 @@ namespace gctl
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}
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template <typename E, typename A>
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void save_Geomview_off(std::string filename, const array<vertex<point3dc, E>> &nodes,
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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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216
lib/io/ply_io.h
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216
lib/io/ply_io.h
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@ -0,0 +1,216 @@
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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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* ╚═════╝ ╚═════╝ ╚═╝ ╚══════╝
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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_PLY_IO_H
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#define _GCTL_PLY_IO_H
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// library's head file
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#include "../core.h"
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#include "../utility.h"
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#include "../geometry.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_ply_ascii(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, ".ply");
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int n, f;
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std::string line;
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std::stringstream ss;
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while (std::getline(infile, line))
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{
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if (sscanf(line.c_str(), "element vertex %d", &n)==1) nodes.resize(n);
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if (sscanf(line.c_str(), "element face %d", &f)==1) facets.resize(f);
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if (line == "end_header")
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{
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if (nodes.empty() || facets.empty())
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{
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infile.close();
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throw std::runtime_error("[gctl::read_ply_ascii] Invalid node or facet sizes.");
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}
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for (size_t i = 0; i < nodes.size(); ++i)
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{
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std::getline(infile, line);
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sscanf(line.c_str(), "%lf %lf %lf", &nodes[i].x, &nodes[i].y, &nodes[i].z);
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nodes[i].id = i;
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}
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for (size_t i = 0; i < facets.size(); ++i)
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{
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std::getline(infile, line);
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int d, v1, v2, v3;
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sscanf(line.c_str(), "%d %d %d %d", &d, &v1, &v2, &v3);
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facets[i].vert[0] = &nodes[v1];
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facets[i].vert[1] = &nodes[v2];
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facets[i].vert[2] = &nodes[v3];
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facets[i].id = i;
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}
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break;
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}
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}
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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_ply_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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time_t now = time(0);
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char* dt = ctime(&now);
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std::ofstream outfile;
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open_outfile(outfile, filename, ".ply");
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outfile << "ply" << std::endl;
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outfile << "format ascii 1.0" << std::endl;
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outfile << "comment Created by GCTL at " << dt;
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outfile << "element vertex " << nodes.size() << std::endl;
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outfile << "property float x" << std::endl;
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outfile << "property float y" << std::endl;
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outfile << "property float z" << std::endl;
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outfile << "element face " << facets.size() << std::endl;
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outfile << "property list uchar int vertex_indices" << std::endl;
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outfile << "end_header" << std::endl;
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for (size_t 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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for (size_t 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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template <typename E, typename A>
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void read_ply_binary(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, ".ply", std::ios::binary);
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int n, f;
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std::string line;
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std::stringstream ss;
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while (std::getline(infile, line))
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{
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if (sscanf(line.c_str(), "element vertex %d", &n)==1) nodes.resize(n);
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if (sscanf(line.c_str(), "element face %d", &f)==1) facets.resize(f);
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if (line == "end_header")
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{
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if (nodes.empty() || facets.empty())
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{
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infile.close();
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throw std::runtime_error("[gctl::read_ply_ascii] Invalid node or facet sizes.");
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}
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float x, y, z;
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for (size_t i = 0; i < nodes.size(); ++i)
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{
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infile.read((char*)&x, sizeof(float));
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infile.read((char*)&y, sizeof(float));
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infile.read((char*)&z, sizeof(float));
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nodes[i].x = x;
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nodes[i].y = y;
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nodes[i].z = z;
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nodes[i].id = i;
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}
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unsigned char num_vertices;
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int v1, v2, v3;
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for (size_t i = 0; i < facets.size(); ++i)
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{
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infile.read((char*)&num_vertices, sizeof(unsigned char));
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infile.read((char*)&v1, sizeof(int));
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infile.read((char*)&v2, sizeof(int));
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infile.read((char*)&v3, sizeof(int));
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facets[i].vert[0] = &nodes[v1];
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facets[i].vert[1] = &nodes[v2];
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facets[i].vert[2] = &nodes[v3];
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facets[i].id = i;
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}
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break;
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}
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}
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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_ply_binary(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, ".ply", std::ios::binary);
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outfile << "ply\n"
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<< "format binary_little_endian 1.0\n"
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<< "comment Created by GCTL\n"
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<< "element vertex " << nodes.size() << "\n"
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<< "property float x\n"
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<< "property float y\n"
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<< "property float z\n"
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<< "element face " << facets.size() << "\n"
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<< "property list uchar int vertex_indices\n"
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<< "end_header\n";
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float x, y, z;
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for (size_t i = 0; i < nodes.size(); ++i)
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{
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x = nodes[i].x;
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y = nodes[i].y;
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z = nodes[i].z;
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outfile.write((char*)&x, sizeof(float));
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outfile.write((char*)&y, sizeof(float));
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outfile.write((char*)&z, sizeof(float));
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}
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unsigned char num_vertices = 3;
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for (size_t i = 0; i < facets.size(); ++i)
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{
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outfile.write((char*)&num_vertices, sizeof(unsigned char));
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outfile.write((char*)&facets[i].vert[0]->id, sizeof(int));
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outfile.write((char*)&facets[i].vert[1]->id, sizeof(int));
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outfile.write((char*)&facets[i].vert[2]->id, sizeof(int));
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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_PLY_IO_H
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