private Matrix FromVM(MatrixVM matrix)
{
uint rows = (uint)matrix.Mask.GetLength(0);
uint cols = (uint)matrix.Mask.GetLength(0);
Matrix m = new Matrix(rows, cols);
for (uint row = 0; row < rows; row++)
{
for (uint col = 0; col < cols; col++)
{
m[row, col] = matrix.Mask[row, col].Value;
}
}
return(m);
}
public bool IsMatricesConsistent(MatrixVM matrix1, MatrixVM matrix2)
{
return(matrix1.Rows == matrix2.Rows && matrix1.Columns == matrix2.Columns);
}
public object Calculate(string str, MatrixVM[] matrices)
{
List <string> rpn = ConvertToRPN(str);
Stack <object> value = new Stack <object>();
double i;
double j;
foreach (string elem in rpn)
{
if (elem.Length == 1 && Priorities.ContainsKey((Operator)elem[0]))
{
object secondOperand = value.Pop();
object firstOperand = value.Pop();
switch ((Operator)elem[0])
{
case Operator.Plus:
if (firstOperand is string && secondOperand is string && Double.TryParse((string)firstOperand, out i) && Double.TryParse((string)secondOperand, out j))
{
value.Push((i + j).ToString());
}
else if (firstOperand is MatrixVM && Double.TryParse((string)secondOperand, out i))
{
value.Push((MatrixVM)firstOperand + i);
}
else if (firstOperand is MatrixVM && secondOperand is MatrixVM && IsMatricesConsistent((MatrixVM)firstOperand, (MatrixVM)secondOperand))
{
value.Push((MatrixVM)firstOperand + (MatrixVM)secondOperand);
}
break;
case Operator.Minus:
if (firstOperand is string && secondOperand is string && Double.TryParse((string)firstOperand, out i) && Double.TryParse((string)secondOperand, out j))
{
value.Push((i - j).ToString());
}
else if (firstOperand is MatrixVM && Double.TryParse((string)secondOperand, out i))
{
value.Push((MatrixVM)firstOperand - i);
}
else if (firstOperand is MatrixVM && secondOperand is MatrixVM && IsMatricesConsistent((MatrixVM)firstOperand, (MatrixVM)secondOperand))
{
value.Push((MatrixVM)firstOperand - (MatrixVM)secondOperand);
}
break;
case Operator.Divide:
if (firstOperand is string && secondOperand is string && Double.TryParse((string)firstOperand, out i) && Double.TryParse((string)secondOperand, out j))
{
value.Push((i / j).ToString());
}
break;
case Operator.Multiply:
if (firstOperand is string && secondOperand is string && Double.TryParse((string)firstOperand, out i) && Double.TryParse((string)secondOperand, out j))
{
value.Push((i * j).ToString());
}
else if (firstOperand is MatrixVM && secondOperand is string && Double.TryParse((string)secondOperand, out i))
{
value.Push((MatrixVM)firstOperand * i);
}
else if (firstOperand is MatrixVM && secondOperand is MatrixVM && ((MatrixVM)firstOperand).Columns == ((MatrixVM)secondOperand).Rows || ((MatrixVM)secondOperand).Rows == ((MatrixVM)firstOperand).Columns)
{
value.Push((MatrixVM)firstOperand * (MatrixVM)secondOperand);
}
break;
}
}
else
{
MatrixVM matrix = matrices.FirstOrDefault((m) => m.Name == elem);
if (matrix != null)
{
value.Push(matrix);
}
else
{
value.Push(elem);
}
}
}
if (value.Count == 0)
{
value.Push("Нет результата");
return(value.Pop());
}
else
{
return(value.Pop());
}
}
