public override void Draw(DrawingContext ctx)
{
BracketElement.DrawBracket(ctx, 0, 0, Height, true);
BracketElement.DrawBracket(ctx, Width - BracketElement.CloseBracketWidth, 0, Height, false);
double x = 0;
for (int i = 0; i < elements.Length; i++)
{
if (i != 0)
{
ctx.DrawText(Comma, new Point(BracketElement.OpenBracketWidth + BracketElement.BracketGap + x, Height - Comma.Height));
x += 5;
}
elements[i].Draw(ctx, BracketElement.OpenBracketWidth + BracketElement.BracketGap + x, (Height - elements[i].Height) / 2);
x += elements[i].Width;
}
}
private static FormulaElement CreateFormulaElement(TokenType type, int size)
{
int i = 0;
if (type is ExprCore.Types.Expression expr)
{
return(ConvertAsFormulaElement(expr.ExprTree, size));
}
else if (type is Function func)
{
if (func.funcName == "sqrt")
{
return(new SquareRootElement(CreateFormulaElement(func.parameters[0], size)));
}
else if (func.funcName == "abs")
{
return(new AbsoluteElement(CreateFormulaElement(func.parameters[0], size)));
}
else
{
FormulaElement[] parameters = new FormulaElement[func.parameters.Count];
foreach (TokenType t in func.parameters)
{
parameters[i++] = CreateFormulaElement(t, size);
}
return(new SequenceElement(new List <FormulaElement>()
{
new TextElement(func.funcName, size), new CommaBracketElement(parameters)
}));
}
}
else if (type is ExprCore.Types.Matrix mat)
{
double rowMax = 0;
double columnMax = 0;
FormulaElement[] elements = new FormulaElement[mat.rows * mat.columns];
for (int r = 0; r < mat.rows; r++)
{
for (int c = 0; c < mat.columns; c++)
{
elements[i] = CreateFormulaElement(mat.data[r, c], size);
rowMax = Math.Max(rowMax, elements[i].Height);
columnMax = Math.Max(columnMax, elements[i].Width);
i++;
}
}
return(new MatrixElement(rowMax, columnMax, mat.rows, mat.columns, elements));
}
else if (type is ExprCore.Types.Vector vec)
{
FormulaElement[] elements = new FormulaElement[vec.vecData.Length];
foreach (TokenType t in vec.vecData)
{
elements[i++] = CreateFormulaElement(t, size);
}
return(new CommaBracketElement(elements));
}
else if (type is Fraction frac)
{
if (UseFractionForm)
{
FormulaElement n = new TextElement(frac.numerator.ToString(), size);
FormulaElement d = new TextElement(frac.denomiator.ToString(), size);
if (frac.denomiator == 1)
{
return(n);
}
else
{
return(new FractionElement(n, d));
}
}
else
{
return(new TextElement(frac.GetValue().ToString(), size));
}
}
else if (type is UnaryOperatorWrapper unary)
{
FormulaElement innerElement = CreateFormulaElement(unary.token, size);
FormulaElement wrapper = innerElement;
if (unary.token is ExprCore.Types.Expression)
{
wrapper = new BracketElement(innerElement);
}
return(new SequenceElement(new List <FormulaElement>()
{
new TextElement(unary.operation.ToString(), size), wrapper
}));
}
else
{
return(new TextElement(type.ToString(), size));
}
}
