/*
* Recognize a Mouse_Data type gesture
*/
public string Recognize(ref Mouse_Data s, bool Consider_Stroke = true)
{
Penny_Pincher_Data P = new Penny_Pincher_Data(s);
s.Label = Recognize(ref P, Consider_Stroke);
return(s.Label);
}
private void RecLast()
{
Mouse_Data M = Screen.Last();
Recognizer.Recognize(ref M);
Screen[Screen.Count - 1] = M;
}
private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
Temp = new Mouse_Data();
Point P = e.GetPosition(this);
Temp.Add_Point(P);
Mouse_Down = true;
}
public void Union(Mouse_Data Next) //Simply Connect the two Datas
{
Trace.Assert(Next.Finished_Collecting);
foreach (Point P in Next.Points)
{
Points.Add(P);
}
Finish_Collecting();
}
public void Tranform_from_Mouse_Data(Mouse_Data Data)
{
Trace.Assert(Data.Finished_Collecting);
for (int i = 1; i < Data.Count; i++)
{
Vectors.Add(Data.Points[i] - Data.Points[i - 1]);
}
Label = Data.Label;
Strokes = Data.Strokes;
Trace.Assert(Vectors.Count == MainWindow.DIVISION - 1);
}
public Mouse_Data(Mouse_Data mouse_Data)
{
Points = new List <Point>();
Label = mouse_Data.Label;
foreach (Point p in mouse_Data.Points)
{
Points.Add(p);
}
Finished_Collecting = mouse_Data.Finished_Collecting;
Center = mouse_Data.Center;
Boundary = mouse_Data.Boundary;
Strokes = mouse_Data.Strokes;
Calculated = mouse_Data.Calculated;
}
public bool Intersect(Mouse_Data Next)
{
Trace.Assert(Next.Finished_Collecting && Finished_Collecting);
for (int i = 0; i < MainWindow.DIVISION - 1; i++)
{
for (int j = 1; j < MainWindow.DIVISION - 1; j++)
{
if (Intersect_Point(Points[i], Points[i + 1], Next.Points[j], Next.Points[j + 1]))
{
return(true);
}
}
}
return(false);
}
/*
*---------------------------One of the most important functions of the program----------------------------------------
* Called when the equal sign is written
*/
private double Calculate_Value()
{
List <Mouse_Data> L = new List <Mouse_Data>();
for (int i = 0; i < Screen.Count; i++)
{
Mouse_Data D = Screen[i];
if (D.Label != "equals" && !D.Calculated)
{
L.Add(D);
}
Screen[i].Calculated = true;
}
Math_Node Tree = new Math_Node(L);
return(Tree.Calculate());
}
static public string ToFormula(List <Mouse_Data> Datas)
{
if (Datas.Count == 0)
{
return("");
}
//Change all "horizontalline" to "minus" or "divide"
Determine_Horizonal_Line(ref Datas);
//The return formula
string S = "";
//All the formulas including the squareroot sign
List <string> Sqrt = new List <string>();
//All the formulas including division
List <string> Div = new List <string>();
//All the formulas including the power sign
List <string> Power = new List <string>();
//Sort by their X value
Datas.Sort();
for (int i = 0; i < Datas.Count; i++)
{
Mouse_Data D = Datas[i];
//Add all the squareroot formulas
if (D.Label == "square root")
{
List <Mouse_Data> Sqrt_Data = new List <Mouse_Data>();
for (int j = 0; j < Datas.Count; j++)
{
Mouse_Data O = Datas[j];
if (O.IsInside(D))
{
Sqrt_Data.Add(O);
Datas.Remove(O);
j--;
}
}
D.Combine(Sqrt_Data);
}
//Add all the division formulas
if (i >= Datas.Count - 1)
{
continue;
}
List <Mouse_Data> Numerator = new List <Mouse_Data>();
List <Mouse_Data> Denominator = new List <Mouse_Data>();
if (D.Label == "divide")
{
for (int j = 0; j < Datas.Count; j++)
{
Mouse_Data O = Datas[j];
if (O.IsAbove(D))
{
Numerator.Add(O);
Datas.Remove(O);
j--;
}
if (O.IsUnder(D))
{
Denominator.Add(O);
Datas.Remove(O);
j--;
}
}
D.Combine(Numerator, Denominator);
}
//Add all the power formulas
if (i >= Datas.Count - 1)
{
continue;
}
if (Datas[i + 1].IsOnRightTopOf(Datas[i]) && (char.IsDigit(Datas[i].Label[0]) || (Datas[i].Label == "square root")))
{
List <Mouse_Data> Power_Data = new List <Mouse_Data>();
while (i < Datas.Count - 1 && Datas[i + 1].IsOnRightTopOf(Datas[i]))
{
Power_Data.Add(Datas[i + 1]);
Datas.RemoveAt(i + 1);
}
Mouse_Data _Temp = new Mouse_Data("^");
_Temp.Combine(Power_Data);
Datas.Insert(i + 1, _Temp);
}
}
//Now build the string!
foreach (Mouse_Data _d in Datas)
{
S += _d.ToFormula();
}
Add_Abbreviated_Sign(ref S);
Add_parentheses(ref S, 0, S.Length - 1);
Debug.Print(S);
return(S);
}
public Penny_Pincher_Data(Mouse_Data Data)
{
Vectors = new List <Vector>();
Tranform_from_Mouse_Data(Data);
}
public bool IsInside(Mouse_Data d)
{
return((d.Boundary.Contains(Center)) && (Boundary.Top > d.Boundary.Top));
}
public bool IsAbove(Mouse_Data d)
{
return(Center.Y < d.Center.Y && Center.X > d.Boundary.Left && Center.X < d.Boundary.Right && Center.Y > d.Center.Y - d.Boundary.Width * 1.5);
}
public int CompareTo(object D)
{
Mouse_Data d = D as Mouse_Data;
return(Boundary.Left.CompareTo(d.Boundary.Left));
}
public bool inRect(Mouse_Data data)
{
Trace.Assert(data.Finished_Collecting && Finished_Collecting);
return(Boundary.Contains(data.Center));
}
internal bool IsOnRightTopOf(Mouse_Data mouse_Data)
{
return((Boundary.Left > (mouse_Data.Center.X)) && (Boundary.Bottom < mouse_Data.Center.Y) && (Boundary.Bottom - Boundary.Top < mouse_Data.Boundary.Bottom - mouse_Data.Boundary.Top) && (Boundary.Top < (mouse_Data.Boundary.Top + mouse_Data.Center.Y) / 2));
}
public bool IsUnder(Mouse_Data d)
{
return(Center.Y > d.Center.Y && Center.X > d.Boundary.Left && Center.X < d.Boundary.Right);
}
private void Window_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (!Mouse_Down)
{
return;
}
Mouse_Down = false;
//---------------------------------Add the last point to the canvas and screen---------------------------------
Point P = e.GetPosition(this);
Draw_Point(P);
Temp.Add_Point(P);
//---------------------------------Do the finished work--------------------------------------------------------
Temp.Finish_Collecting();
if (!Temp.Finished_Collecting)
{
return;
}
//--------------------------check if the current gesture should be unioned with the last gesture-----------------------
if (Screen.Count != 0)
{
Mouse_Data REF = Screen[Screen.Count - 1];
if ((Screen[Screen.Count - 1].Intersect(Temp) || (Screen[Screen.Count - 1].Boundary.Contains(Temp.Center)) && Recognizer.Recognize(ref REF) != "square root"))
{
Mouse_Data T = Screen[Screen.Count - 1];
T.Union(Temp);
Screen[Screen.Count - 1] = T;
}
else
{
RecLast();
if (Screen.Last().Label == "horizontal line")
{
Mouse_Data D = new Mouse_Data(Screen.Last());
D.Union(Temp);
if (Recognizer.Recognize(ref Temp) == "horizontal line" && Recognizer.Recognize(ref D, false) == "equals")
{
Screen[Screen.Count - 1] = D;
double R = Calculate_Value();
Debug.Print(R.ToString());
#region Output_Answer
Label AnswerBox = new Label();
AnswerBox.Content = R.ToString();
double L, T;
AnswerBox.Margin = new Thickness(L = Temp.Boundary.X + Temp.Boundary.Width + 10, T = ((Temp.Boundary.Y + Temp.Boundary.Height + D.Boundary.Y + D.Boundary.Height) / 2 - 50), 0, MainCanvas.Height - T - 20);
AnswerBox.FontSize = 50;
MainCanvas.Children.Add(AnswerBox);
#endregion
}
else
{
Screen.Add(Temp);
}
}
else
{
Screen.Add(Temp);
}
}
}
else
{
Screen.Add(Temp);
}
}