private void TextBoxChanged()
{
RawExpression tempFunction = null;
int tempUnitPixels = 0;
double tempOriginX = 0;
double tempOriginY = 0;
try
{
tempFunction = RawExpression.Parse(textBoxFunction.Text);
}
catch (Exception e)
{
buttonRender.Enabled = false;
labelErrorMessage.Text = "[Function]" + e.Message;
return;
}
try
{
tempUnitPixels = int.Parse(textBoxUnitPixels.Text, NumberStyles.None);
}
catch (Exception e)
{
buttonRender.Enabled = false;
labelErrorMessage.Text = "[UnitPixels]" + e.Message;
return;
}
try
{
tempOriginX = double.Parse(textBoxOriginX.Text, NumberStyles.AllowDecimalPoint | NumberStyles.AllowLeadingSign);
}
catch (Exception e)
{
buttonRender.Enabled = false;
labelErrorMessage.Text = "[OriginX]" + e.Message;
return;
}
try
{
tempOriginY = double.Parse(textBoxOriginY.Text, NumberStyles.AllowDecimalPoint | NumberStyles.AllowLeadingSign);
}
catch (Exception e)
{
buttonRender.Enabled = false;
labelErrorMessage.Text = "[OriginY]" + e.Message;
return;
}
this.function = tempFunction;
this.unitPixels = tempUnitPixels;
this.originX = tempOriginX;
this.originY = tempOriginY;
buttonRender.Enabled = true;
labelErrorMessage.Text = "(Ready)";
}
public RawExpression Parse(string input)
{
Console.WriteLine("received request: Parse({0})", input);
return(RawExpression.Parse(input));
}
static void Main(string[] args)
{
{
string e = "(k1 *Cs1 + k2 * Co2) / (k1 * C1 + k2 * C2)";
{
RawExpression exp = RawExpression.Parse(e);
RawExpression dk1 = exp.Different("k1").Simplify();
RawExpression dk2 = exp.Different("k2").Simplify();
Console.WriteLine("input:\t\t" + e);
Console.WriteLine("parse:\t\t" + exp.ToCode());
Console.WriteLine("dk1:\t\t" + dk1.ToCode());
Console.WriteLine("dk2:\t\t" + dk2.ToCode());
}
// cs1 = 128, Co2 = 1024, C1 = 256, C2 = 2048
Dictionary <string, double> values = new Dictionary <string, double>
{
{ "Cs1", 128 },
{ "Co2", 1024 },
{ "C1", 256 },
{ "C2", 2048 },
};
foreach (var p in values)
{
Console.WriteLine("{0} => {1}", p.Value, p.Key);
}
{
RawExpression exp = RawExpression.Parse(e).Apply(values).Simplify();
RawExpression dk1 = exp.Different("k1").Simplify();
RawExpression dk2 = exp.Different("k2").Simplify();
Console.WriteLine("applied:\t" + exp.ToCode());
Console.WriteLine("dk1:\t\t" + dk1.ToCode());
Console.WriteLine("dk2:\t\t" + dk2.ToCode());
}
}
{
string[] expressions =
{
"1",
"1.2",
"-3",
"12+34",
"56*78",
"x^y",
"x+2*y+4",
"(x+y)*(3+4)",
"exp(x+y)",
"x+ln(y)",
"x/y",
"exp(x)/ln(x)",
"sin(x)",
"cos(x)",
"tan(x)",
"cot(x)",
"sec(x)",
"csc(x)",
};
foreach (var e in expressions)
{
RawExpression exp = RawExpression.Parse(e);
Console.WriteLine("input:\t\t" + e);
Console.WriteLine("parse:\t\t" + exp.ToCode());
Console.WriteLine("simplified:\t" + exp.Simplify().ToCode());
Console.WriteLine("dx:\t\t" + exp.Different("x").Simplify().ToCode());
Console.WriteLine("dy:\t\t" + exp.Different("y").Simplify().ToCode());
Console.WriteLine("no x:\t\t" + exp.Apply("x", 0).Simplify().ToCode());
Console.WriteLine("no y:\t\t" + exp.Apply("y", 0).Simplify().ToCode());
Console.WriteLine();
Debug.Assert(exp.ToCode() == RawExpression.Parse(exp.ToCode()).ToCode());
}
}
{
string[] expressions =
{
"(x-3)*(x-5)",
"ln(x)/ln(2)-3",
"(x-5)^2-4",
};
foreach (var e in expressions)
{
RawExpression exp = RawExpression.Parse(e);
Console.WriteLine("input:\t\t" + e);
Console.WriteLine("parse:\t\t" + exp.ToCode());
for (int i = 0; i < 10; i++)
{
Console.WriteLine("solve:\t\t" + i.ToString() + " => " + exp.Solve("x", i).ToString());
}
Console.WriteLine();
}
}
}