public static ParabolicProblem ReadProblemFrom(string directory)
{
ExpressionParser parser = new ExpressionParser("x", "y", "t");
string elemsPath = "";
string vertexesPath = "";
List <string> boundaryConditionsPaths = new List <string>();
string sigmaPath = "";
string lambdaPath = "";
string functionPath = "";
string timeLayersPath = "";
string initialConditionPath = "";
string[] files = null;
if (!Directory.Exists(directory) || (files = Directory.GetFiles(directory)).Length == 0)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Directory doesnt exist or empty. Try again");
Console.ResetColor();
return(null);
}
int i;
string temp;
for (i = 0; i < files.Length; i++)
{
temp = Path.GetFileName(files[i]);
switch (temp)
{
case "vertexes.txt": vertexesPath = files[i]; break;
case "elements.txt": elemsPath = files[i]; break;
case "sigma.txt": sigmaPath = files[i]; break;
case "lambda.txt": lambdaPath = files[i]; break;
case "function.txt": functionPath = files[i]; break;
case "timeLayers.txt": timeLayersPath = files[i]; break;
case "initialCondition.txt": initialConditionPath = files[i]; break;
default:
if (temp.StartsWith("S") && temp.EndsWith(".txt"))
{
boundaryConditionsPaths.Add(files[i]);
}
break;
}
}
// Reading vertexes
string[] content = File.ReadAllLines(vertexesPath);
int vertexesCount = content.Length;
double[][] vertexes = new double[vertexesCount][];
for (i = 0; i < vertexesCount; i++)
{
vertexes[i] = content[i].Split(' ').Select(v => double.Parse(v)).ToArray();
}
// Reading and compiling all function parts in right part of equation
content = File.ReadAllLines(functionPath);
Func[] function = new Func[content.Length];
for (i = 0; i < function.Length; i++)
{
function[i] = parser.GetFunction(content[i]);
}
// Reading elements
content = File.ReadAllLines(elemsPath);
int elementCount = content.Length;
int[][] elements = new int[elementCount][];
for (i = 0; i < elementCount; i++)
{
elements[i] = content[i].Split(' ').Select(e => int.Parse(e)).ToArray();
}
// Reading materials and diff coeffs
double[] sigma = File.ReadAllText(sigmaPath).Split(' ').Select(m => double.Parse(m)).ToArray();
double[] lambda = File.ReadAllText(lambdaPath).Split(' ').Select(m => double.Parse(m)).ToArray();
// Reading time layers
double[] timeLayers = File.ReadAllText(timeLayersPath).Split(' ').Select(m => double.Parse(m)).ToArray();
//Reading initial function
Func initialCondition = parser.GetFunction(File.ReadAllText(initialConditionPath));
// Reading boundary conditions
string[][] boundCond_str = new string[boundaryConditionsPaths.Count][];
for (i = 0; i < boundaryConditionsPaths.Count; i++)
{
boundCond_str[i] = File.ReadAllLines(boundaryConditionsPaths[i]);
}
BoundaryCondition[] conditions = new BoundaryCondition[boundCond_str.Length];
Func[] values = new Func[boundCond_str.Length];
for (i = 0; i < conditions.Length; i++)
{
conditions[i] = BoundaryCondition.Parse(parser, boundCond_str[i][0],
boundCond_str[i][1], boundCond_str[i][2], boundCond_str[i].Length > 3 ? boundCond_str[i][3] : null);
}
return(new ParabolicProblem(elementCount, vertexesCount, elements, vertexes,
sigma, lambda, function, timeLayers, initialCondition, conditions));
}
public static EllipticalProblem ReadProblemFrom(string directory)
{
ExpressionParser parser = new ExpressionParser();
string elemsPath = "";
string vertexesPath = "";
List <string> boundaryConditionsPaths = new List <string>();
string materialPath = "";
string diffCoeffsPath = "";
string functionPath = "";
string[] files = Directory.GetFiles(directory);
if (!Directory.Exists(directory) && files.Length != 0)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Directory isn't exist or empty. Try again");
Console.ResetColor();
return(null);
}
int i;
string temp;
for (i = 0; i < files.Length; i++)
{
temp = Path.GetFileName(files[i]);
switch (temp)
{
case "vertexes.txt": vertexesPath = files[i]; break;
case "elements.txt": elemsPath = files[i]; break;
case "gamma.txt": materialPath = files[i]; break;
case "lambda.txt": diffCoeffsPath = files[i]; break;
case "function.txt": functionPath = files[i]; break;
default:
if (temp.StartsWith("S") && temp.EndsWith(".txt"))
{
boundaryConditionsPaths.Add(files[i]);
}
break;
}
}
// Reading vertexes
string[] content = File.ReadAllLines(vertexesPath);
int vertexesCount = content.Length;
double[][] vertexes = new double[vertexesCount][];
for (i = 0; i < vertexesCount; i++)
{
vertexes[i] = content[i].Split(' ').Select(v => double.Parse(v)).ToArray();
}
// Reading and compiling all function parts in right part of equation
content = File.ReadAllLines(functionPath);
Func[] function = new Func[content.Length];
for (i = 0; i < function.Length; i++)
{
function[i] = parser.GetFunction(content[i]);
}
// Reading elements
content = File.ReadAllLines(elemsPath);
int elemCount = content.Length;
int[][] elems = new int[elemCount][];
for (i = 0; i < elemCount; i++)
{
elems[i] = content[i].Split(' ').Select(e => int.Parse(e)).ToArray();
}
// Reading materials and diff coeffs
double[] materials = File.ReadAllText(materialPath).Split(' ').Select(m => double.Parse(m)).ToArray();
double[] diffCoeffs = File.ReadAllText(diffCoeffsPath).Split(' ').Select(m => double.Parse(m)).ToArray();
// Reading boundary conditions
string[][] boundCond_str = new string[boundaryConditionsPaths.Count][];
for (i = 0; i < boundaryConditionsPaths.Count; i++)
{
boundCond_str[i] = File.ReadAllLines(boundaryConditionsPaths[i]);
}
BoundaryCondition[] conditions = new BoundaryCondition[boundCond_str.Length];
Func[] values = new Func[boundCond_str.Length];
for (i = 0; i < conditions.Length; i++)
{
conditions[i] = BoundaryCondition.Parse(parser, boundCond_str[i][0],
boundCond_str[i][1], boundCond_str[i][2]);
}
return(new EllipticalProblem(elemCount, vertexesCount, elems, vertexes,
materials, diffCoeffs, function, conditions));
}