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("");
}
