private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_TET_NEIGHBORS.
//
// Discussion:
//
// TET_MESH_TET_NEIGHBORS manages the tet mesh neighbor calculation.
//
// A tet mesh of order 4 or order 10 may be used.
//
// Usage:
//
// tet_mesh_tet_neighbors prefix
//
// where prefix is the common file prefix:
//
// * prefix_nodes.txt, the node coordinates (not needed by this program);
// * prefix_elements.txt, the linear element definitions.
// * prefix_element_neighbors.txt, the element neighbors.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 27 September 2009
//
// Author:
//
// John Burkardt
//
{
const int node_num = 0;
string prefix;
Console.WriteLine("");
Console.WriteLine("TET_MESH_TET_NEIGHBORS");
Console.WriteLine(" Read a tet mesh dataset of TETRA_NUM");
Console.WriteLine(" tetrahedrons, using 4 or 10 nodes.");
Console.WriteLine("");
Console.WriteLine(" Compute the tet mesh neighbors, and write this");
Console.WriteLine(" information to a file");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_TET_NEIGHBORS:");
Console.WriteLine(" Please enter the filename prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string element_filename = prefix + "_elements.txt";
string neighbor_filename = prefix + "_element_neighbors.txt";
//
// Read the tet mesh data.
//
TableHeader h = typeMethods.i4mat_header_read(element_filename);
int element_order = h.m;
int element_num = h.n;
if (element_order != 4 && element_order != 10)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_TET_NEIGHBORS - Fatal error!");
Console.WriteLine(" The tet mesh must have order 4 or order 10.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Tetrahedron order = " + element_order + "");
Console.WriteLine(" Number of tetras = " + element_num + "");
int[] element_node = typeMethods.i4mat_data_read(element_filename, element_order,
element_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order, element_num,
element_node, 1, 1, element_order, 5, " First 5 tetrahedrons:");
//
// Detect and correct 1-based node indexing.
//
TetMesh.tet_mesh_base_zero(node_num, element_order, element_num, ref element_node);
//
// Compute the neighbor information.
//
int[] element_neighbor = TetMesh_Neighbors.tet_mesh_neighbor_tets(element_order, element_num,
element_node);
typeMethods.i4mat_transpose_print_some(4, element_num,
element_neighbor, 1, 1, 4, 5, " First 5 neighbor sets:");
//
// Write the neighbor information to a file.
//
typeMethods.i4mat_write(neighbor_filename, 4, element_num, element_neighbor);
Console.WriteLine("");
Console.WriteLine(" Created the file \"" + neighbor_filename + "\".");
Console.WriteLine("");
Console.WriteLine("TET_MESH_TET_NEIGHBORS:");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_REFINE.
//
// Discussion:
//
// TET_MESH_REFINE refines a tetrahedral mesh of order 4 (linear).
//
// Usage:
//
// tet_mesh_refine prefix
//
// where prefix is the common file prefix:
//
// * prefix_nodes.txt, the node coordinates;
// * prefix_elements.txt, the element definitions.
// * prefix_ref_nodes.txt, the new node coordinates;
// * prefix_ref_elements.txt, the new element definitions.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 18 August 2009
//
// Author:
//
// John Burkardt
//
{
int[] element_node2 = new int[1];
int element_num2 = 0;
int node_num2 = 0;
double[] node_xyz2 = new double[1];
string prefix;
Console.WriteLine("");
Console.WriteLine("TET_MESH_REFINE");
Console.WriteLine(" READ a tet mesh, REFINE it, and WRITE the new data.");
Console.WriteLine("");
Console.WriteLine(" READ:");
Console.WriteLine(" a node dataset of NODE_NUM1 points in 3 dimensions.");
Console.WriteLine(" a tet mesh of TETRA_NUM1 tets of order TET_ORDER.");
Console.WriteLine("");
Console.WriteLine(" REFINE:");
Console.WriteLine(" compute a new set of nodes and tets, which is an");
Console.WriteLine(" eightfold refinement of the input mesh.");
Console.WriteLine("");
Console.WriteLine(" WRITE:");
Console.WriteLine(" a node dataset of NODE_NUM2 points in 3 dimensions.");
Console.WriteLine(" a tet mesh of 8*TETRA_NUM1 tets of order TET_ORDER.");
Console.WriteLine("");
Console.WriteLine(" At the moment, this program only works for a linear");
Console.WriteLine(" mesh (TET_ORDER=4).");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_REFINE:");
Console.WriteLine(" Please enter the filename prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string input_node_filename = prefix + "_nodes.txt";
string input_element_filename = prefix + "_elements.txt";
string output_node_filename = prefix + "_ref_nodes.txt";
string output_element_filename = prefix + "_ref_elements.txt";
//
// Read the node data.
//
TableHeader h = typeMethods.r8mat_header_read(input_node_filename);
int dim_num = h.m;
int node_num1 = h.n;
if (dim_num != 3)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_REFINE - Fatal error!");
Console.WriteLine(" The spatial dimension must be 3.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + input_node_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Spatial dimension = " + dim_num + "");
Console.WriteLine(" Number of nodes = " + node_num1 + "");
double[] node_xyz1 = typeMethods.r8mat_data_read(input_node_filename, dim_num,
node_num1);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + input_node_filename + "\".");
typeMethods.r8mat_transpose_print_some(dim_num, node_num1,
node_xyz1, 1, 1, dim_num, 5, " First 5 input nodes:");
//
// Read the tet mesh data.
//
h = typeMethods.i4mat_header_read(input_element_filename);
int element_order = h.m;
int element_num1 = h.n;
switch (element_order)
{
case 4:
break;
case 10:
Console.WriteLine("");
Console.WriteLine("TET_MESH_REFINE - Fatal error!");
Console.WriteLine(" The program cannot yet handel the 10-node case.");
Console.WriteLine(" Try using the sequence:");
Console.WriteLine(" TET_MESH_Q2L --> TET_MESH_REFINE --> TET_MESH_L2Q.");
return;
default:
Console.WriteLine("");
Console.WriteLine("TET_MESH_REFINE - Fatal error!");
Console.WriteLine(" The tet mesh must have order 4 or order 10.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + input_element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Tetrahedron order = " + element_order + "");
Console.WriteLine(" Number of tetras = " + element_num1 + "");
int[] element_node1 = typeMethods.i4mat_data_read(input_element_filename, element_order,
element_num1);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + input_element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order, element_num1,
element_node1, 1, 1, element_order, 5, " First 5 input tetrahedrons:");
//
// Check for 1-based node-indexing, and convert it to 0-based.
//
TetMesh.tet_mesh_base_zero(node_num1, element_order, element_num1, ref element_node1);
switch (element_order)
{
//
// Compute the refined mesh.
//
case 4:
int[] edge_data = new int[5 * 6 * element_num1];
TetMesh_Refine.tet_mesh_order4_refine_size(node_num1, element_num1, element_node1,
ref node_num2, ref element_num2, ref edge_data);
Console.WriteLine(" Number of refined nodes = " + node_num2 + "");
Console.WriteLine(" Number of refined tetras = " + element_num2 + "");
node_xyz2 = new double[dim_num * node_num2];
element_node2 = new int[element_order * element_num2];
TetMesh_Refine.tet_mesh_order4_refine_compute(node_num1, element_num1, node_xyz1,
element_node1, node_num2, element_num2, edge_data, ref node_xyz2, ref element_node2);
break;
case 10:
{
break;
}
}
//
// Print a small amount of the refined data.
//
typeMethods.r8mat_transpose_print_some(dim_num, node_num2, node_xyz2,
1, 1, dim_num, 5, " First 5 output nodes:");
typeMethods.i4mat_transpose_print_some(element_order, element_num2, element_node2,
1, 1, element_order, 5, " First 5 output tetras");
//
// Write out the node and tetra data for the refined mesh
//
typeMethods.r8mat_write(output_node_filename, dim_num, node_num2, node_xyz2);
Console.WriteLine("");
Console.WriteLine(" Wrote the file \"" + output_node_filename + "\".");
typeMethods.i4mat_write(output_element_filename, element_order, element_num2, element_node2);
Console.WriteLine(" Wrote the file \"" + output_element_filename + "\".");
Console.WriteLine("");
Console.WriteLine("TET_MESH_REFINE:");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_L2Q.
//
// Discussion:
//
// TET_MESH_L2Q makes a quadratic tet mesh from a linear one.
//
// Usage:
//
// tet_mesh_l2q prefix
//
// where prefix is the common file prefix:
//
// * prefix_nodes.txt, the node coordinates;
// * prefix_elements.txt, the linear element definitions.
// * prefix_l2q_nodes.txt, the quadratic node coordinates,
// * prefix_l2q_elements.txt, the quadratic element definitions.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 01 October 2009
//
// Author:
//
// John Burkardt
//
{
const int element_order2 = 10;
int node_num2 = 0;
string prefix;
Console.WriteLine("");
Console.WriteLine("TET_MESH_L2Q");
Console.WriteLine(" Read a \"linear\" tet mesh and");
Console.WriteLine(" write out a \"quadratic\" one.");
Console.WriteLine("");
Console.WriteLine(" Read a node file of NODE_NUM1 nodes in 3 dimensions.");
Console.WriteLine(" Read an associated tet mesh of TETRA_NUM");
Console.WriteLine(" tetrahedrons, using 4 nodes per tetrahedron.");
Console.WriteLine("");
Console.WriteLine(" Create new nodes which are midpoints of sides,");
Console.WriteLine(" generate new node and tet mesh data for");
Console.WriteLine(" quadratic 10-node tetrahedrons, and write them out.");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_L2Q:");
Console.WriteLine(" Please enter the filename prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string input_node_filename = prefix + "_nodes.txt";
string input_element_filename = prefix + "_elements.txt";
string output_node_filename = prefix + "_l2q_nodes.txt";
string output_element_filename = prefix + "_l2q_elements.txt";
//
// Read the node data.
//
TableHeader h = typeMethods.r8mat_header_read(input_node_filename);
int dim_num = h.m;
int node_num1 = h.n;
if (dim_num != 3)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_L2Q - Fatal error!");
Console.WriteLine(" The spatial dimension must be 3.");
Console.WriteLine(" This data has dimension = " + dim_num + "");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + input_node_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Spatial dimension = " + dim_num + "");
Console.WriteLine(" Number of nodes = " + node_num1 + "");
double[] node_xyz1 = typeMethods.r8mat_data_read(input_node_filename, dim_num,
node_num1);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + input_node_filename + "\".");
typeMethods.r8mat_transpose_print_some(dim_num, node_num1,
node_xyz1, 1, 1, dim_num, 5, " First 5 nodes:");
//
// Read the tet mesh data.
//
h = typeMethods.i4mat_header_read(input_element_filename);
int element_order1 = h.m;
int element_num = h.n;
if (element_order1 != 4)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_L2Q - Fatal error!");
Console.WriteLine(" The tet mesh must have order 4.");
Console.WriteLine(" This mesh has order " + element_order1 + "");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + input_element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Tetrahedron order = " + element_order1 + "");
Console.WriteLine(" Number of tetras = " + element_num + "");
int[] element_node1 = typeMethods.i4mat_data_read(input_element_filename, element_order1,
element_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + input_element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order1, element_num,
element_node1, 1, 1, element_order1, 5, " First 5 tetrahedrons:");
//
// If the element information is 1-based, make it 0-based.
//
TetMesh.tet_mesh_base_zero(node_num1, element_order1, element_num, ref element_node1);
//
// Compute the quadratic mesh.
//
int[] edge_data = new int[5 * 6 * element_num];
TetMesh_L2Q.tet_mesh_order4_to_order10_size(element_num, element_node1, node_num1,
ref edge_data, ref node_num2);
Console.WriteLine(" Number of quadratic nodes = " + node_num2 + "");
double[] node_xyz2 = new double[dim_num * node_num2];
int[] element_node2 = new int[element_order2 * element_num];
TetMesh_L2Q.tet_mesh_order4_to_order10_compute(element_num, element_node1, node_num1,
node_xyz1, edge_data, ref element_node2, node_num2, ref node_xyz2);
//
// Print a small amount of the quadratic data.
//
typeMethods.r8mat_transpose_print_some(dim_num, node_num2, node_xyz2,
1, 1, dim_num, 5, " First 5 quadratic nodes:");
typeMethods.i4mat_transpose_print_some(element_order2, element_num, element_node2,
1, 1, element_order2, 5, " First 5 quadratic tetras");
//
// Write out the node and tetra data for the quadratic mesh
//
typeMethods.r8mat_write(output_node_filename, dim_num, node_num2, node_xyz2);
Console.WriteLine("");
Console.WriteLine(" Wrote the file \"" + output_node_filename + "\".");
typeMethods.i4mat_write(output_element_filename, element_order2, element_num, element_node2);
Console.WriteLine(" Wrote the file \"" + output_element_filename + "\".");
Console.WriteLine("");
Console.WriteLine("TET_MESH_L2Q:");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_RCM.
//
// Discussion:
//
// TET_MESH_RCM applies the RCM reordering to a tet mesh.
//
// The user supplies a node file and a tetrahedron file, containing
// the coordinates of the nodes, and the indices of the nodes that
// make up each tetrahedron. Either 4-node or 10-node tetrahedrons may
// be used.
//
// The program reads the data, computes the adjacency information,
// carries out the RCM algorithm to get the permutation, applies
// the permutation to the nodes and tetrahedrons, and writes out
// new node and tetrahedron files that correspond to the RCM permutation.
//
// Note that node data is normally three dimensional, that is,
// each node has an X, Y and Z coordinate. In some applications, it
// may be desirable to specify more information. This program
// will accept node data that includes DIM_NUM entries on each line,
// as long as DIM_NUM is the same for each entry.
//
// Thanks to Xingxing Zhang for pointing out some problems with a
// previous version of this program, 10 May 2011.
//
// Usage:
//
// tet_mesh_rcm prefix
//
// where prefix is the common file prefix:
//
// * prefix_nodes.txt, the node coordinates (input);
// * prefix_elements.txt, the element definitions (input).
// * prefix_rcm_nodes.txt, the new node coordinates (output);
// * prefix_rcm_elements.txt, the new element definitions (output).
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 08 March 2013
//
// Author:
//
// John Burkardt
//
{
int[] adj = new int[1];
int adj_num = 0;
int[] adj_row = new int[1];
const bool debug = false;
int i;
int j;
string prefix;
Console.WriteLine("");
Console.WriteLine("");
Console.WriteLine("TET_MESH_RCM");
Console.WriteLine(" Read a node dataset of NODE_NUM points in 3 dimensions.");
Console.WriteLine(" Read an associated tet mesh dataset of TETRA_NUM");
Console.WriteLine(" tetrahedrons using 4 or 10 nodes.");
Console.WriteLine("");
Console.WriteLine(" Apply the RCM reordering (Reverse Cuthill-McKee).");
Console.WriteLine("");
Console.WriteLine(" Reorder the data and write it out to files.");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_RCM:");
Console.WriteLine(" Please enter the filename prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string node_filename = prefix + "_nodes.txt";
string element_filename = prefix + "_elements.txt";
string node_rcm_filename = prefix + "_rcm_nodes.txt";
string element_rcm_filename = prefix + "_rcm_elements.txt";
//
// Read the node data.
//
TableHeader h = typeMethods.r8mat_header_read(node_filename);
int dim_num = h.m;
int node_num = h.n;
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + node_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Spatial dimension DIM_NUM = " + dim_num + "");
Console.WriteLine(" Number of points NODE_NUM = " + node_num + "");
double[] node_xyz = typeMethods.r8mat_data_read(node_filename, dim_num, node_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + node_filename + "\".");
typeMethods.r8mat_transpose_print_some(dim_num, node_num, node_xyz, 1, 1, dim_num, 5,
" Coordinates of first 5 nodes:");
//
// Read the tet mesh data.
//
h = typeMethods.i4mat_header_read(element_filename);
int element_order = h.m;
int element_num = h.n;
if (element_order != 4 && element_order != 10)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_RCM - Fatal error!");
Console.WriteLine(" The tet mesh must have order 4 or order 10.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Tetrahedron order = " + element_order + "");
Console.WriteLine(" Number of tetras = " + element_num + "");
int[] element_node = typeMethods.i4mat_data_read(element_filename, element_order,
element_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order, element_num,
element_node, 1, 1, element_order, 5, " First 5 tetrahedrons:");
//
// If the element information is 1-based, make it 0-based.
//
int base_user = TetMesh.tet_mesh_base_zero(node_num, element_order,
element_num, ref element_node);
if (base_user != 0 && base_user != 1)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_RCM - Fatal error!");
Console.WriteLine(" The input data does not seem to be 0-based or 1-based.");
}
switch (element_order)
{
//
// Following code depends on the element order.
//
case 4:
{
//
// Count the number of adjacencies.
// Set up the ADJ_ROW adjacency pointer array.
//
adj_row = new int[node_num + 1];
TetMesh.tet_mesh_order4_adj_count(node_num, element_num, element_node,
ref adj_num, ref adj_row);
if (debug || node_num < 10)
{
Console.WriteLine("");
Console.WriteLine(" ADJ_NUM = " + adj_num + "");
typeMethods.i4vec_print(node_num + 1, adj_row, " ADJ_ROW:");
}
//
// Set up the ADJ adjacency array.
//
adj = TetMesh.tet_mesh_order4_adj_set(node_num, element_num, element_node,
adj_num, adj_row);
switch (node_num)
{
case < 10:
AdjacencyMatrix.adj_print(node_num, adj_num, adj_row, adj, " ADJ");
break;
}
break;
}
case 10:
{
//
// Count the number of adjacencies.
// Set up the ADJ_ROW adjacency pointer array.
//
adj_row = new int[node_num + 1];
TetMesh.tet_mesh_order10_adj_count(node_num, element_num, element_node,
ref adj_num, ref adj_row);
if (debug || node_num < 10)
{
Console.WriteLine("");
Console.WriteLine(" ADJ_NUM = " + adj_num + "");
typeMethods.i4vec_print(node_num + 1, adj_row, " ADJ_ROW:");
}
//
// Set up the ADJ adjacency array.
//
adj = TetMesh.tet_mesh_order10_adj_set(node_num, element_num, element_node,
ref adj_num, ref adj_row);
switch (node_num)
{
case < 10:
AdjacencyMatrix.adj_print(node_num, adj_num, adj_row, adj, " ADJ");
break;
}
break;
}
}
//
// Compute the bandwidth.
//
int bandwidth = AdjacencyMatrix.adj_bandwidth(node_num, adj_num, adj_row, adj);
Console.WriteLine("");
Console.WriteLine(" ADJ bandwidth = " + bandwidth + "");
//
// GENRCM computes the RCM permutation.
//
int[] perm = GenRCM.genrcm(node_num, adj_num, adj_row, adj);
//
// Compute the inverse permutation.
//
int[] perm_inv = typeMethods.perm_inverse3(node_num, perm);
switch (node_num)
{
case < 10:
{
Console.WriteLine("");
Console.WriteLine(" I PERM[I] INVERSE[I]");
Console.WriteLine("");
for (i = 0; i < node_num; i++)
{
Console.WriteLine(" " + i.ToString().PadLeft(8)
+ " " + perm[i].ToString().PadLeft(8)
+ " " + perm_inv[i].ToString().PadLeft(8) + "");
}
break;
}
}
//
// Compute the bandwidth of the permuted array.
//
bandwidth = AdjacencyMatrix.adj_perm_bandwidth(node_num, adj_num, adj_row, adj,
perm, perm_inv);
Console.WriteLine("");
Console.WriteLine(" ADJ bandwidth after RCM permutation = " + bandwidth + "");
//
// Permute the nodes in NODE_XYZ.
//
int base_internal = 0;
typeMethods.r8col_permute(dim_num, node_num, perm, base_internal, node_xyz);
//
// Permute the node indices in ELEMENT_NODE.
//
for (j = 0; j < element_num; j++)
{
for (i = 0; i < element_order; i++)
{
int node = element_node[i + j * element_order];
element_node[i + j * element_order] = perm_inv[node];
}
}
switch (base_user)
{
//
// If the user base was 1, restore it!
//
case 1:
{
for (i = 0; i < element_num; i++)
{
for (j = 0; j < element_order; j++)
{
element_node[i + j * element_order] += 1;
}
}
Console.WriteLine("");
Console.WriteLine(" Output files will use the same 1-based ordering used by the input.");
break;
}
}
//
// Write the node and element data.
//
typeMethods.r8mat_write(node_rcm_filename, dim_num, node_num, node_xyz);
Console.WriteLine("");
Console.WriteLine(" Created the file \"" + node_rcm_filename + "\".");
typeMethods.i4mat_write(element_rcm_filename, element_order, element_num, element_node);
Console.WriteLine(" Created the file \"" + element_rcm_filename + "\".");
Console.WriteLine("");
Console.WriteLine("TET_MESH_RCM:");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_QUALITY.
//
// Discussion:
//
// TET_MESH_QUALITY determines quality measures for a tet mesh.
//
// Usage:
//
// tet_mesh_quality prefix
//
// where prefix is the common file prefix:
//
// * prefix_nodes.txt contains the node coordinates;
// * prefix_elements.txt contains the element definitions.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 27 September 2009
//
// Author:
//
// John Burkardt
//
{
int i;
string prefix;
double value_max = 0;
double value_mean = 0;
double value_min = 0;
double value_var = 0;
Console.WriteLine("");
Console.WriteLine("");
Console.WriteLine("TET_MESH_QUALITY");
Console.WriteLine(" Compute tet mesh quality measures.");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_QUALITY:");
Console.WriteLine(" Please enter the file prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string node_filename = prefix + "_nodes.txt";
string element_filename = prefix + "_elements.txt";
//
// Read the node data.
//
TableHeader h = typeMethods.r8mat_header_read(node_filename);
int dim_num = h.m;
int node_num = h.n;
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + node_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Spatial dimension DIM_NUM = " + dim_num + "");
Console.WriteLine(" Number of points NODE_NUM = " + node_num + "");
if (dim_num != 3)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_QUALITY - Fatal error!");
Console.WriteLine(" Dataset must have spatial dimension 3.");
return;
}
double[] node_xyz = typeMethods.r8mat_data_read(node_filename, dim_num, node_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + node_filename + "\".");
typeMethods.r8mat_transpose_print_some(dim_num, node_num, node_xyz, 1, 1, 5, 5,
" 5 by 5 portion of data read from file:");
//
// Read the tetra data.
//
h = typeMethods.i4mat_header_read(element_filename);
int element_order = h.m;
int element_num = h.n;
if (element_order != 4)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_QUALITY - Fatal error!");
Console.WriteLine(" Data is not for a 4 node tet mesh.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Element order = " + element_order + "");
Console.WriteLine(" Number of elements = " + element_num + "");
int[] element_node = typeMethods.i4mat_data_read(element_filename, element_order,
element_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order, element_num,
element_node, 1, 1, element_order, 10, " Portion of ELEMENT_NODE:");
//
// If the element information is 1-based, make it 0-based.
//
TetMesh.tet_mesh_base_zero(node_num, element_order, element_num, ref element_node);
//
// Compute and print the quality measures.
//
Console.WriteLine("");
Console.WriteLine(" Minimum Mean Maximum Variance");
Console.WriteLine("");
TetMesh.tet_mesh_quality1(node_num, node_xyz, element_order, element_num,
element_node, ref value_min, ref value_mean, ref value_max, ref value_var);
Console.WriteLine(" Quality measure 1 = "
+ " " + value_min.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_mean.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_max.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_var.ToString(CultureInfo.InvariantCulture).PadLeft(10) + "");
TetMesh.tet_mesh_quality2(node_num, node_xyz, element_order, element_num,
element_node, ref value_min, ref value_mean, ref value_max, ref value_var);
Console.WriteLine(" Quality measure 2 = "
+ " " + value_min.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_mean.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_max.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_var.ToString(CultureInfo.InvariantCulture).PadLeft(10) + "");
TetMesh.tet_mesh_quality3(node_num, node_xyz, element_order, element_num,
element_node, ref value_min, ref value_mean, ref value_max, ref value_var);
Console.WriteLine(" Quality measure 3 = "
+ " " + value_min.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_mean.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_max.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_var.ToString(CultureInfo.InvariantCulture).PadLeft(10) + "");
TetMesh.tet_mesh_quality4(node_num, node_xyz, element_order, element_num,
element_node, ref value_min, ref value_mean, ref value_max, ref value_var);
Console.WriteLine(" Quality measure 4 = "
+ " " + value_min.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_mean.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_max.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_var.ToString(CultureInfo.InvariantCulture).PadLeft(10) + "");
TetMesh.tet_mesh_quality5(node_num, node_xyz, element_order, element_num,
element_node, ref value_min, ref value_mean, ref value_max, ref value_var);
Console.WriteLine(" Quality measure 5 = "
+ " " + value_min.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_mean.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_max.ToString(CultureInfo.InvariantCulture).PadLeft(10)
+ " " + value_var.ToString(CultureInfo.InvariantCulture).PadLeft(10) + "");
int[] node_order = TetMesh.tet_mesh_node_order(element_order, element_num, element_node,
node_num);
int histo_num = typeMethods.i4vec_max(node_num, node_order);
int[] histo_gram = typeMethods.i4vec_histogram(node_num, node_order, histo_num);
Console.WriteLine("");
Console.WriteLine(" Here is a numerical histogram of the order of");
Console.WriteLine(" each node in the mesh, that is, the number of");
Console.WriteLine(" tetrahedrons that include that node as a vertex.");
Console.WriteLine("");
Console.WriteLine(" For a regular mesh, most nodes would have the");
Console.WriteLine(" same order.");
Console.WriteLine("");
Console.WriteLine(" Order Number of Nodes");
Console.WriteLine("");
for (i = 0; i <= histo_num; i++)
{
if (histo_gram[i] != 0)
{
Console.WriteLine(" " + i.ToString(CultureInfo.InvariantCulture).PadLeft(6)
+ " " + histo_gram[i].ToString(CultureInfo.InvariantCulture).PadLeft(6) + "");
}
}
Console.WriteLine("");
Console.WriteLine("TET_MESH_QUALITY:");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_VOLUMES.
//
// Discussion:
//
// TET_MESH_VOLUMES determines the element volumes of a tet mesh.
//
// Usage:
//
// tet_mesh_volumes prefix
//
// where
//
// * prefix_nodes.txt contains nodal coordinates;
// * prefix_elements.txt contains the element definitions;
// * prefix_volumes.txt will contain the element volumes.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 13 August 2009
//
// Author:
//
// John Burkardt
//
{
int element;
string prefix;
double[] tetra = new double[3 * 4];
Console.WriteLine("");
Console.WriteLine("");
Console.WriteLine("TET_MESH_VOLUMES");
Console.WriteLine(" Compute volume of each tetrahedron in a tet mesh..");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_VOLUMES:");
Console.WriteLine(" Please enter the filename prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string node_filename = prefix + "_nodes.txt";
string element_filename = prefix + "_elements.txt";
string volume_filename = prefix + "_volumes.txt";
//
// Read the node data.
//
TableHeader h = typeMethods.r8mat_header_read(node_filename);
int dim_num = h.m;
int node_num = h.n;
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + node_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Spatial dimension DIM_NUM = " + dim_num + "");
Console.WriteLine(" Number of points NODE_NUM = " + node_num + "");
if (dim_num != 3)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_VOLUMES - Fatal error!");
Console.WriteLine(" Dataset must have spatial dimension 3.");
return;
}
double[] node_xyz = typeMethods.r8mat_data_read(node_filename, dim_num, node_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + node_filename + "\".");
typeMethods.r8mat_transpose_print_some(dim_num, node_num, node_xyz, 1, 1, 5, 5,
" 5 by 5 portion of data read from file:");
//
// Read the tetra data.
//
h = typeMethods.i4mat_header_read(element_filename);
int element_order = h.m;
int element_num = h.n;
if (element_order != 4)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_VOLUMES - Fatal error!");
Console.WriteLine(" Data is not for a 4 node tet mesh.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Tetrahedron order = " + element_order + "");
Console.WriteLine(" Number of tetras = " + element_num + "");
int[] element_node = typeMethods.i4mat_data_read(element_filename, element_order,
element_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order, element_num,
element_node, 1, 1, element_order, 10, " Portion of ELEMENT_NODE:");
//
// If the element information is 1-based, make it 0-based.
//
TetMesh.tet_mesh_base_zero(node_num, element_order, element_num, ref element_node);
//
// Compute and print the quality measures.
//
double[] volume = new double[element_num];
for (element = 0; element < element_num; element++)
{
int j;
for (j = 0; j < 4; j++)
{
int i;
for (i = 0; i < 3; i++)
{
int node = element_node[j + element * element_order];
tetra[i + j * 3] = node_xyz[i + node * 3];
}
}
volume[element] = Tetrahedron.tetrahedron_volume(tetra);
}
double volume_max = typeMethods.r8vec_max(element_num, volume);
double volume_min = typeMethods.r8vec_min(element_num, volume);
double volume_ave = typeMethods.r8vec_mean(element_num, volume);
double volume_tot = typeMethods.r8vec_sum(element_num, volume);
double volume_var = typeMethods.r8vec_variance(element_num, volume);
Console.WriteLine("");
Console.WriteLine(" Minimum: " + volume_min + "");
Console.WriteLine(" Average: " + volume_ave + "");
Console.WriteLine(" Maximum: " + volume_max + "");
Console.WriteLine(" Total: " + volume_tot + "");
Console.WriteLine(" Variance: " + volume_var + "");
typeMethods.r8mat_write(volume_filename, 1, element_num, volume);
Console.WriteLine("");
Console.WriteLine(" Full list of volumes written to \"" + volume_filename + "\".");
Console.WriteLine("");
Console.WriteLine("TET_MESH_VOLUMES:");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
private static void Main(string[] args)
//****************************************************************************80
//
// Purpose:
//
// MAIN is the main program for TET_MESH_TO_XML.
//
// Discussion:
//
// TET_MESH_TO_XML converts a tet mesh, using 4 or 10 node
// tetrahedral elements, to a DOLFIN XML mesh file.
//
// Usage:
//
// tet_mesh_to_xml prefix
//
// where prefix is the common file prefix:
//
// * prefix_nodes.txt, the node coordinates;
// * prefix_elements.txt, the linear element definitions.
// * prefix.xml, the DOLFIN XML mesh file.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 04 June 2013
//
// Author:
//
// John Burkardt
//
// Reference:
//
// Anders Logg, Kent-Andre Mardal, Garth Wells,
// Automated Solution of Differential Equations by the Finite Element
// Method: The FEniCS Book,
// Lecture Notes in Computational Science and Engineering,
// Springer, 2011,
// ISBN13: 978-3642230981
//
{
string prefix;
Console.WriteLine("");
Console.WriteLine("TET_MESH_TO_XML;");
Console.WriteLine(" Convert a tet mesh to DOLFIN XML format");
Console.WriteLine("");
Console.WriteLine(" Read \"prefix\"_nodes.txt, node coordinates.");
Console.WriteLine(" Read \"prefix\"_elements.txt, 4, 10 or 20 node element definitions.");
Console.WriteLine("");
Console.WriteLine(" Create \"prefix\".xml, a corresponding DOLFIN XML mesh file.");
Console.WriteLine("");
//
// Get the filename prefix.
//
try
{
prefix = args[0];
}
catch
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_TO_XML:");
Console.WriteLine(" Please enter the filename prefix.");
prefix = Console.ReadLine();
}
//
// Create the filenames.
//
string node_filename = prefix + "_nodes.txt";
string element_filename = prefix + "_elements.txt";
string xml_filename = prefix + ".xml";
//
// Read the node data.
//
TableHeader h = typeMethods.r8mat_header_read(node_filename);
int dim_num = h.m;
int node_num = h.n;
if (dim_num != 3)
{
Console.WriteLine("");
Console.WriteLine("TET_MESH_TO_XML; - Fatal error!");
Console.WriteLine(" The spatial dimension must be 3.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + node_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Spatial dimension = " + dim_num + "");
Console.WriteLine(" Number of nodes = " + node_num + "");
double[] node_xyz = typeMethods.r8mat_data_read(node_filename, dim_num, node_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + node_filename + "\".");
typeMethods.r8mat_transpose_print_some(dim_num, node_num,
node_xyz, 1, 1, dim_num, 5, " First 5 nodes:");
//
// Read the element data.
//
h = typeMethods.i4mat_header_read(element_filename);
int element_order = h.m;
int element_num = h.n;
switch (element_order)
{
case 4:
break;
case 10:
break;
case 20:
break;
default:
Console.WriteLine("");
Console.WriteLine("TET_MESH_TO_XML - Fatal error!");
Console.WriteLine(" The tet mesh must have order 4, 10, or 20.");
return;
}
Console.WriteLine("");
Console.WriteLine(" Read the header of \"" + element_filename + "\".");
Console.WriteLine("");
Console.WriteLine(" Element order = " + element_order + "");
Console.WriteLine(" Number of elements = " + element_num + "");
int[] element_node = typeMethods.i4mat_data_read(element_filename, element_order,
element_num);
Console.WriteLine("");
Console.WriteLine(" Read the data in \"" + element_filename + "\".");
typeMethods.i4mat_transpose_print_some(element_order, element_num,
element_node, 1, 1, element_order, 5, " First 5 elements:");
//
// Use 0-based indexing.
//
TetMesh.tet_mesh_base_zero(node_num, element_order, element_num, ref element_node);
//
// Write the DOLFIN XML file.
//
XML.xml_write(xml_filename, dim_num, node_num, node_xyz, element_order,
element_num, element_node);
Console.WriteLine("");
Console.WriteLine(" Created XML file \"" + xml_filename + "\".");
Console.WriteLine("");
Console.WriteLine("TET_MESH_TO_XML;");
Console.WriteLine(" Normal end of execution.");
Console.WriteLine("");
}
