/// <summary>
/// Sets the initial parameters of the DifferentialEquationSystem class.
/// </summary>
/// <param name="expressions">List of expressions</param>
/// <param name="leftVariables">List of left variables</param>
/// <param name="constants">List of constants</param>
/// <param name="timeVariable">Start time (presents in the expressions)</param>
/// <param name="tEnd">End time</param>
/// <param name="tau">Calculation step</param>
public DifferentialEquationSystem(List <string> expressions, List <DEVariable> leftVariables,
List <DEVariable> constants, DEVariable timeVariable, double tEnd, double tau)
{
// Setting up of variables and constants
if (leftVariables != null)
{
this.LeftVariables = DifferentialEquationSystemHelpers.ConvertDEVariablesToVariables(leftVariables);
}
if (constants != null)
{
this.Constants = DifferentialEquationSystemHelpers.ConvertDEVariablesToVariables(constants);
}
if (timeVariable != null)
{
this.TimeVariable = timeVariable;
}
// Setting up of all variables
List <Variable> allVariables = new List <Variable>();
if (this.LeftVariables != null)
{
allVariables.AddRange(this.LeftVariables);
}
if (this.Constants != null && this.Constants.Count > 0)
{
allVariables.AddRange(this.Constants);
}
if (this.TimeVariable != null)
{
allVariables.Add(this.TimeVariable);
}
// Setting up of all expressions
if (expressions == null || expressions.Count == 0)
{
throw new ArgumentException("Container 'expressions' of the constructor cannot be null or empty! Nothing in the differential equation system.");
}
else
{
this.Expressions = expressions;
List <Expression> expressionSystem = new List <Expression>();
foreach (string expression in expressions)
{
expressionSystem.Add(new Expression(expression, allVariables));
}
this.ExpressionSystem = expressionSystem;
}
this.TEnd = tEnd;
this.Tau = tau;
DifferentialEquationSystemHelpers.CheckVariables(this.ExpressionSystem, this.LeftVariables, this.TimeVariable, this.Tau, this.TEnd);
}
/// <summary>
/// Initializes a new instance of the <see cref="DEVariable" /> class.
/// </summary>
/// <param name="initVariable">Initial variable which is supposed to be copied to the current one</param>
public DEVariable(DEVariable initVariable)
{
this.Name = initVariable.Name;
this.Value = initVariable.Value;
}