public GrapherFunction(MathExpression ex)
{
IsAlphaFaded = true;
ColorA = m_ColorA;
ColorB = m_ColorB;
Reset(ex);
}
public void Reset(MathExpression ex)
{
expression = ex;
Is3D = ex.ContainsVariable("z");
IsDensityPlot = expression.ExpressionStack.Peek() is Density;
IsImplicit = ex.IsImplicit;
if (IsImplicit)
implicitdata = new List<Vector2>();
timer = new Stopwatch();
timer.Start();
Visible = true;
InvalidateVBO();
IsLocked = false;
}
public void AddFunction(MathExpression ex )
{
Functions.Add(new GrapherFunction(ex));
UpdateSettingsForm();
}
public void Expect(MathExpression custom, float expected)
{
float result = Truncate(custom.Calculate(), 3);
Assert.AreEqual(expected, result);
Console.WriteLine("Given: " + custom.OriginalExpression);
Console.WriteLine("Expected: " + expected);
Console.WriteLine("Result: " + result);
}
public bool TryCreateExpression(string expression,out MathExpression ex)
{
try
{
StaticStack<MathOperation> Expression = Convert(expression);
//the new MathExpression gets the original
Dictionary<string, float> var = m_Variables;
//and we keep a copy so they dont intefere with eachother
m_Variables = new Dictionary<string, float>(var);
ex = new MathExpression(Expression, var, expression);
return true;
}
catch (Exception)
{
ex = null;
return false;
}
}
public MathExpression Optimize(MathState state)
{
ExpressionTree tree = m_ExpressionTree;
m_ExpressionTree.Optimize(state);
StaticStack<MathOperation> stack = m_ExpressionTree.BuildExpressionStack(new StaticStack<MathOperation>());
Dictionary<string, float> var = new Dictionary<string, float>(m_Variables);
for (int i = 0; i < stack.Count; i++)
{
if (stack[i] is Variable)
{
Variable v = (Variable)stack[i];
stack[i] = new Variable(v.ToString(), var);
}
}
MathExpression optimized = new MathExpression(stack, var, OriginalExpression);
UpdateExpressionTree();
return optimized;
}