public void Calculate()
{
float xp = (float)dane.GetXp();
float xk = (float)dane.GetXk();
float h = (float)dane.GetN();
int n = (int)((xk - xp) / h);
float ybuf = dane.getPoint(0).Y;
float xbuf = dane.getPoint(0).X;
for (int i = 0; i < n; i++)
{
float x1 = xbuf + h;
float k1 = h * (float)dane.getFunctionInPointXY(xbuf, ybuf);
float k2 = h * (float)dane.getFunctionInPointXY(xbuf + h / 2, k1 / 2 + ybuf);
float k3 = h * (float)dane.getFunctionInPointXY(xbuf + h / 2, k2 / 2 + ybuf);
float k4 = h * (float)dane.getFunctionInPointXY(xbuf + h, k3 + ybuf);
float y1 = ybuf + (k1 + 2 * k2 + 2 * k3 + k4) / 6;
PointF bufor = new PointF(x1, y1);
dane.AddPoint(bufor);
// Console.WriteLine(x1 + ": " + y1);
xbuf = x1;
ybuf = y1;
}
dane.SetDrawable();
}
public void Calculate()
{
float xp = (float)dane.GetXp();
float xk = (float)dane.GetXk();
float h = (float)dane.GetN();
int n = (int)((xk - xp) / h);
float ybuf = dane.getPoint(0).Y;
float xbuf = dane.getPoint(0).X;
for (int i = 0; i < n; i++)
{
float yn = ybuf + h / 2 * ((float)dane.getFunctionInPointXY(xbuf, ybuf) + (float)dane.getFunctionInPointXY(xbuf + h, ybuf + h * (float)dane.getFunctionInPointXY(xbuf, ybuf)));
float xn = xbuf + h;
PointF bufor = new PointF(xn, yn);
dane.AddPoint(bufor);
// Console.WriteLine(xn+": "+ yn );
xbuf = xn;
ybuf = yn;
}
dane.SetDrawable();
}
public void Calculate()
{
float xp = (float)dane.GetXp();
float xk = (float)dane.GetXk();
float h = (float)dane.GetN();
int n = (int)((xk - xp) / h);
int iterator = 0;
float y_temp = dane.getPoint(0).Y;
for (float i = xp; i < xk; i += h)
{
float y1 = y_temp + h * (float)dane.getFunctionInPointXY(i, y_temp);
PointF bufor = new PointF(i + h, y1);
dane.AddPoint(bufor);
//Console.WriteLine((i + h).ToString()+" "+y1);
y_temp = y1;
iterator++;
}
dane.SetDrawable();
}
private void loadFile_DROP(object sender, DragEventArgs e)
{
//if (Datas.Count() > 0)
//Datas.Clear();
try
{
string[] a = (string[])e.Data.GetData(DataFormats.FileDrop, false);
if (a != null)
{
for (int i = 0; i < a.Length; i++)
{
FileStream fs = new FileStream(a.GetValue(i).ToString(),
FileMode.Open, FileAccess.Read);
try
{
Data DataBufor = new Data();
DataBufor.SetFileName(Path.GetFileName(a.GetValue(i).ToString()));
StreamReader sr = new StreamReader(fs);
while (!sr.EndOfStream)
{
String bufor = sr.ReadLine();
if (String.IsNullOrEmpty(bufor))
{
continue;
}
bufor = (bufor.Trim(' ')).ToLower();
String[] pociete = bufor.Split('=');
pociete[0] = pociete[0].TrimEnd(' ');
pociete[1] = pociete[1].Trim(' ');
if (pociete[0].Equals("f(x,y)") || pociete[0].Equals("f(x)") || pociete[0].Equals("f'(x)"))
{ //Pobieranie funkcji f(x,y), f(x), f'(x)
String BuforujText = pociete[1];
Dictionary <int, double> temporaryFunctionX = new Dictionary <int, double>();
Dictionary <int, double> temporaryFunctionY = new Dictionary <int, double>();
int maxRatioX = -1;
int maxRatioY = -1;
while (!String.IsNullOrEmpty(BuforujText))
{
BuforujText = BuforujText.Trim(' ');
int positionOfMinus = TryFindMinus(BuforujText);
int positionOfPlus = TryFindSth(BuforujText, '+');
int positionOfX = TryFindSth(BuforujText, 'x');
int positionOfY = TryFindSth(BuforujText, 'y');
bool subtract = false;
if (positionOfMinus == 0 || positionOfPlus == 0)
{
BuforujText = BuforujText.Remove(0, 1);
if (positionOfMinus == 0)
{
subtract = true;
}
positionOfMinus = TryFindMinus(BuforujText);
positionOfPlus = TryFindSth(BuforujText, '+');
}
String toCut = BuforujText.Substring(0, (positionOfMinus < positionOfPlus) ? positionOfMinus : positionOfPlus);
BuforujText = BuforujText.Remove(0, (positionOfMinus < positionOfPlus) ? positionOfMinus : positionOfPlus);
String[] toOperate;
if (positionOfX <= positionOfY)
{
toOperate = toCut.Split('x');
}
else
{
toOperate = toCut.Split('y');
}
if (toOperate.Length > 1 && !String.IsNullOrEmpty(toOperate[1]))
{
toOperate[1] = toOperate[1].Remove(toOperate[1].IndexOf('^'), 1);
}
int temp = (toOperate.Length > 1) ? (String.IsNullOrEmpty(toOperate[1]))?1:int.Parse(toOperate[1].Trim(' ')) : 0;
if (temp > maxRatioX && positionOfX < positionOfY)
{
maxRatioX = temp;
}
else if (temp > maxRatioY && positionOfX > positionOfY)
{
maxRatioY = temp;
}
if (String.IsNullOrEmpty(toOperate[0]))
{
if (positionOfX <= positionOfY)
{
if (!temporaryFunctionX.ContainsKey(temp))
{
temporaryFunctionX.Add(temp, (subtract) ? -1 : 1);
}
}
else
{
if (!temporaryFunctionY.ContainsKey(temp))
{
temporaryFunctionY.Add(temp, (subtract) ? -1 : 1);
}
}
}
else
{
if (positionOfX <= positionOfY)
{
if (!temporaryFunctionX.ContainsKey(temp))
{
temporaryFunctionX.Add(temp, double.Parse((subtract) ? "-" + toOperate[0].Trim(' ') : toOperate[0].Trim(' ')));
}
else
{
temporaryFunctionX[temp] += double.Parse((subtract) ? "-" + toOperate[0].Trim(' ') : toOperate[0].Trim(' '));
}
}
else
{
if (!temporaryFunctionY.ContainsKey(temp))
{
temporaryFunctionY.Add(temp, double.Parse((subtract) ? "-" + toOperate[0].Trim(' ') : toOperate[0].Trim(' ')));
}
else
{
temporaryFunctionY[temp] += double.Parse((subtract) ? "-" + toOperate[0].Trim(' ') : toOperate[0].Trim(' '));
}
}
}
}
if (!pociete[0].Equals("f'(x)"))
{
DataBufor.AddFunctionX(temporaryFunctionX, maxRatioX);
DataBufor.AddFunctionY(temporaryFunctionY, maxRatioY);
}
else
{
DataBufor.AddDerivative(temporaryFunctionX, maxRatioX);
}
}
else if (pociete[1].Equals("?"))
{
//Pobieranie wartości szukanej
pociete[0] = (pociete[0].Remove(pociete[0].IndexOf(")"), 1)).Remove(pociete[0].IndexOf("f("), 2);
DataBufor.SetToFind(Double.Parse(pociete[0].Trim(' ')));
;
}
else if (pociete[0].Equals("xk"))
{
//Pobranie wartości Xk
DataBufor.SetXk(Double.Parse(pociete[1].Trim(' ')));
}
else if (pociete[0].Equals("xp"))
{
DataBufor.SetXp(Double.Parse(pociete[1].Trim(' ')));
//Pobranie wartości Xp
}
else if (pociete[0].Equals("n"))
{
DataBufor.SetN(Double.Parse(pociete[1].Trim(' ')));
//Pobranie wartości n
}
else if (pociete[0].Equals("prec"))
{
DataBufor.SetPrecision(Double.Parse(pociete[1].Trim(' ')));
//Pobranie wartości Dokładności
}
else
{
//Pobranie punktu
pociete[0] = (pociete[0].Remove(pociete[0].IndexOf(")"), 1)).Remove(pociete[0].IndexOf("f("), 2);
DataBufor.AddPoint(new PointF(float.Parse(pociete[0].Trim(' ')), float.Parse(pociete[1].Trim(' '))));
}
}
Datas.Add(DataBufor);
sr.Close();
}
catch (Exception ex)
{
MessageBox.Show("Wykryto błąd składni pliku! Sprawdz czy używasz przecinków a nie kropek!");
Console.WriteLine(ex.ToString());
}
fs.Close();
}
}
}
catch (Exception ex)
{
Console.WriteLine("Error in DragDrop function: " + ex.Message);
}
}