public static String getHTMLEval(String input)
{
String workingInput = cleanInput(input);
Expression expressionToEval = MathEngine.getExpressionFromString(workingInput);
if (expressionToEval == null)
{
return(HTMLizer.prepareForHTML(input));
}
else
{
Expression evaluated = expressionToEval.cloneAndSubstitute(MathEngine.Table).evaluate();
return(@"\(" + evaluated.toHTML() + @"\)");
}
}
public static String getHTMLPlot(String input)
{
String workingInput = cleanInput(input);
String[] partsOfCommand = workingInput.Split(new Char[] { ',' });
if (partsOfCommand.Length != 4)
{
return(HTMLizer.prepareForHTML(input));
}
try
{
Double lowerLimit = Double.Parse(partsOfCommand[1]);
Double upperLimit = Double.Parse(partsOfCommand[2]);
int numberOfPoints = int.Parse(partsOfCommand[3]);
if (lowerLimit > upperLimit || numberOfPoints <= 0)
{
return(HTMLizer.prepareForHTML(input));
}
Expression expr = MathEngine.getExpressionFromString(partsOfCommand[0]);
List <Symbol> symbolsInExpr = new List <Symbol>();
if (expr == null || (symbolsInExpr = expr.symbolsInExpression(symbolsInExpr)).Count != 1 || !expr.canEvaluateIfSymbolsConst(symbolsInExpr.ToArray()))
{
return(HTMLizer.prepareForHTML(input));
}
List <KeyValuePair <Double, Double> > points = new List <KeyValuePair <Double, Double> >();
loadPoints(ref points, expr, symbolsInExpr[0], lowerLimit, upperLimit, numberOfPoints);
return(generateHTMLPlot(points));
}
catch (Exception)
{
return(HTMLizer.prepareForHTML(input));
}
}
