gctl_mesh/lib/mesh/regular_mesh_3d.cpp
2025-04-04 22:36:13 +08:00

267 lines
10 KiB
C++

/********************************************************
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* Geophysical Computational Tools & Library (GCTL)
*
* Copyright (c) 2023 Yi Zhang (yizhang-geo@zju.edu.cn)
*
* GCTL is distributed under a dual licensing scheme. You can redistribute
* it and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, either version 2
* of the License, or (at your option) any later version. You should have
* received a copy of the GNU Lesser General Public License along with this
* program. If not, see <http://www.gnu.org/licenses/>.
*
* If the terms and conditions of the LGPL v.2. would prevent you from using
* the GCTL, please consider the option to obtain a commercial license for a
* fee. These licenses are offered by the GCTL's original author. As a rule,
* licenses are provided "as-is", unlimited in time for a one time fee. Please
* send corresponding requests to: yizhang-geo@zju.edu.cn. Please do not forget
* to include some description of your company and the realm of its activities.
* Also add information on how to contact you by electronic and paper mail.
******************************************************/
#include "regular_mesh_3d.h"
void gctl::regular_mesh_3d::init(std::string in_name, std::string in_info, int xbnum, int ybnum, int zbnum,
double xmin, double ymin, double zmin, double xsize, double ysize, double zsize)
{
check_initiated(true); // 检查网格是否已经初始化
base_mesh::init(REGULAR_MESH, MESH_3D, in_name, in_info);
rm_xbnum = xbnum; rm_ybnum = ybnum; rm_zbnum = zbnum;
rm_xmin = xmin; rm_ymin = ymin; rm_zmin = zmin;
rm_xsize = xsize; rm_ysize = ysize; rm_zsize = zsize;
node_num_ = (rm_xbnum+1) * (rm_ybnum+1) *(rm_zbnum+1);
ele_num_ = rm_xbnum * rm_ybnum * rm_zbnum;
nodes.resize(node_num_);
elements.resize(ele_num_);
for (int k = 0; k < rm_zbnum+1; k++)
{
for (int j = 0; j < rm_ybnum+1; j++)
{
for (int i = 0; i < rm_xbnum+1; i++)
{
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].id = i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1);
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].x = rm_xmin+(i-0.5)*rm_xsize;
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].y = rm_ymin+(j-0.5)*rm_ysize;
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].z = rm_zmin+(k-0.5)*rm_zsize;
}
}
}
for (int k = 0; k < rm_zbnum; k++)
{
for (int j = 0; j < rm_ybnum; j++)
{
for (int i = 0; i < rm_xbnum; i++)
{
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].id = i+j*rm_xbnum+k*rm_xbnum*rm_ybnum;
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[0] = nodes.get(i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[1] = nodes.get(i+1+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[2] = nodes.get(i+1+(j+1)*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[3] = nodes.get(i+(j+1)*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[4] = nodes.get(i+j*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[5] = nodes.get(i+1+j*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[6] = nodes.get(i+1+(j+1)*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[7] = nodes.get(i+(j+1)*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].dl = nodes.get(i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].ur = nodes.get(i+1+(j+1)*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
}
}
}
initialized_ = true;
return;
}
void gctl::regular_mesh_3d::show_mesh_dimension(std::ostream &os) const
{
os << "node num: " << node_num_ << std::endl;
os << "elem num: " << ele_num_ << std::endl;
os << "x-range: " << rm_xmin << " -> " << rm_xmin + (rm_xbnum - 1)*rm_xsize << "\n";
os << "y-range: " << rm_ymin << " -> " << rm_ymin + (rm_ybnum - 1)*rm_ysize << "\n";
os << "z-range: " << rm_zmin << " -> " << rm_zmin + (rm_zbnum - 1)*rm_zsize << "\n";
os << "block-size: " << rm_xsize << ", " << rm_ysize << ", " << rm_zsize << "\n";
os << "dimension: " << rm_xbnum << ", " << rm_ybnum << ", " << rm_zbnum << "\n";
return;
}
void gctl::regular_mesh_3d::load_binary(std::string filename)
{
check_initiated(true); // 检查网格是否已经初始化
std::ifstream infile;
gctl::open_infile(infile, filename, ".2m",
std::ios::in|std::ios::binary);
// 读入网格头信息
load_headinfo(infile, REGULAR_MESH, MESH_3D);
// 读入网格信息
infile.read((char*)&rm_xbnum, sizeof(int));
infile.read((char*)&rm_ybnum, sizeof(int));
infile.read((char*)&rm_zbnum, sizeof(int));
infile.read((char*)&rm_xmin, sizeof(double));
infile.read((char*)&rm_ymin, sizeof(double));
infile.read((char*)&rm_zmin, sizeof(double));
infile.read((char*)&rm_xsize, sizeof(double));
infile.read((char*)&rm_ysize, sizeof(double));
infile.read((char*)&rm_zsize, sizeof(double));
node_num_ = (rm_xbnum+1) * (rm_ybnum+1) *(rm_zbnum+1);
ele_num_ = rm_xbnum * rm_ybnum * rm_zbnum;
nodes.resize(node_num_);
elements.resize(ele_num_);
for (int k = 0; k < rm_zbnum+1; k++)
{
for (int j = 0; j < rm_ybnum+1; j++)
{
for (int i = 0; i < rm_xbnum+1; i++)
{
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].id = i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1);
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].x = rm_xmin+(i-0.5)*rm_xsize;
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].y = rm_ymin+(j-0.5)*rm_ysize;
nodes[i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1)].z = rm_zmin+(k-0.5)*rm_zsize;
}
}
}
for (int k = 0; k < rm_zbnum; k++)
{
for (int j = 0; j < rm_ybnum; j++)
{
for (int i = 0; i < rm_xbnum; i++)
{
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].id = i+j*rm_xbnum+k*rm_xbnum*rm_ybnum;
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[0] = nodes.get(i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[1] = nodes.get(i+1+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[2] = nodes.get(i+1+(j+1)*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[3] = nodes.get(i+(j+1)*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[4] = nodes.get(i+j*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[5] = nodes.get(i+1+j*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[6] = nodes.get(i+1+(j+1)*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].vert[7] = nodes.get(i+(j+1)*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].dl = nodes.get(i+j*(rm_xbnum+1)+k*(rm_xbnum+1)*(rm_ybnum+1));
elements[i+j*rm_xbnum+k*rm_xbnum*rm_ybnum].ur = nodes.get(i+1+(j+1)*(rm_xbnum+1)+(k+1)*(rm_xbnum+1)*(rm_ybnum+1));
}
}
}
// 读入模型数据单元
load_datablock(infile);
infile.close();
initialized_ = true;
return;
}
void gctl::regular_mesh_3d::save_binary(std::string filename)
{
check_initiated(); // 检查网格是否已经初始化
std::ofstream outfile;
gctl::open_outfile(outfile, filename, ".2m",
std::ios::out|std::ios::binary);
// 首先输出网格的头信息
save_headinfo(outfile);
// 输出网格信息
outfile.write((char*)&rm_xbnum, sizeof(int));
outfile.write((char*)&rm_ybnum, sizeof(int));
outfile.write((char*)&rm_zbnum, sizeof(int));
outfile.write((char*)&rm_xmin, sizeof(double));
outfile.write((char*)&rm_ymin, sizeof(double));
outfile.write((char*)&rm_zmin, sizeof(double));
outfile.write((char*)&rm_xsize, sizeof(double));
outfile.write((char*)&rm_ysize, sizeof(double));
outfile.write((char*)&rm_zsize, sizeof(double));
// 输出的模型数据单元
save_datablock(outfile);
outfile.close();
return;
}
gctl::regular_mesh_3d::regular_mesh_3d() : base_mesh::base_mesh(){}
gctl::regular_mesh_3d::regular_mesh_3d(std::string in_name, std::string in_info, int xbnum, int ybnum, int zbnum,
double xmin, double ymin, double zmin, double xsize, double ysize, double zsize)
{
init(in_name, in_info, xbnum, ybnum, zbnum, xmin, ymin, zmin, xsize, ysize, zsize);
}
gctl::regular_mesh_3d::~regular_mesh_3d(){}
int gctl::regular_mesh_3d::get_xbnum() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_xbnum;
}
int gctl::regular_mesh_3d::get_ybnum() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_ybnum;
}
int gctl::regular_mesh_3d::get_zbnum() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_zbnum;
}
double gctl::regular_mesh_3d::get_xmin() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_xmin;
}
double gctl::regular_mesh_3d::get_ymin() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_ymin;
}
double gctl::regular_mesh_3d::get_zmin() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_zmin;
}
double gctl::regular_mesh_3d::get_xsize() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_xsize;
}
double gctl::regular_mesh_3d::get_ysize() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_ysize;
}
double gctl::regular_mesh_3d::get_zsize() const
{
check_initiated(); // 检查网格是否已经初始化
return rm_zsize;
}
void gctl::regular_mesh_3d::save_gmsh(std::string filename, index_packed_e packed)
{
meshio_.init_file(filename, Output);
meshio_.set_packed(packed, Output);
meshio_.save_mesh(elements, nodes);
return;
}