private async void Multiply_Click(object sender, RoutedEventArgs e)
{
//declare and Gather inputs
try
{
long longAdd1 = long.Parse(InputNumber1.Text);
long longAdd2 = long.Parse(InputNumber2.Text);
if (longAdd1 < 0 || longAdd2 < 0)
{
throw new FormatException("Input less than zero");
}
if (longAdd1 > 99999999999999999 || longAdd2 > 99999999999999999)
{
throw new FormatException("Input exceeds Soroban maximum value");
}
if (longAdd1 * longAdd2 > 99999999999999999)
{
throw new FormatException("Not enough columns to display answer");
}
if ((InputNumber1.Text.Length + 1 + (2 * InputNumber2.Text.Length) > 17) && (InputNumber2.Text.Length > InputNumber1.Text.Length))
{
throw new FormatException("Not enough columns to calculate answer. Try switching #1 and #2 around.");
}
if (InputNumber1.Text.Length + 1 + (2 * InputNumber2.Text.Length) > 17)
{
throw new FormatException("Not enough columns to calculate answer");
}
//Determine the larger input value
ShowValueOnSoroban(0);
DisplayTextBox.Text = "";
string introString = Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Multiplication/Introduction");
introString += Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Multiplication/Terminology");
ContentDialog msgLargest = new ContentDialog()
{
Title = "Demonstration",
Content = introString,
CloseButtonText = "Ok"
};
await msgLargest.ShowAsync();
MultiplyTwoLongs(longAdd1, longAdd2, true);
}
catch (FormatException fEx)
{
DisplayTextBox.Text = "Error: " + fEx.Message;
}
//catch (Exception)
//{
// DisplayTextBox.Text = "Input needs to be an integer between zero and 999999999999\n";
//}
}
private async void Add_Click(object sender, RoutedEventArgs e)
{
//declare and Gather inputs
try
{
long longAdd1 = long.Parse(InputNumber1.Text);
long longAdd2 = long.Parse(InputNumber2.Text);
if (longAdd1 < 0 || longAdd2 < 0)
{
throw new FormatException("Input less than zero");
}
if (longAdd1 > 99999999999999999 || longAdd2 > 99999999999999999)
{
throw new FormatException("Input exceeds Soroban maximum value");
}
//Determine the larger input value
ShowValueOnSoroban(0);
DisplayTextBox.Text = "";
string introString = Math.Max(longAdd1, longAdd2) + " is the larger number. We display this first, and add the smaller number to it.";
introString += "\nWe add by moving from left to right across the columns of the abacus.\n";
introString += Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Addition/Comment1");
ContentDialog msgLargest = new ContentDialog()
{
Title = "Demonstration",
Content = introString,
CloseButtonText = "Ok"
};
await msgLargest.ShowAsync();
DisplayTextBox.Text = Math.Max(longAdd1, longAdd2).ToString() + " is displayed on the Soroban above.";
AddTwoLongsAsync(Math.Max(longAdd1, longAdd2), Math.Min(longAdd1, longAdd2));
}
catch (FormatException fEx)
{
DisplayTextBox.Text = "Error: " + fEx.Message;
}
catch (Exception)
{
DisplayTextBox.Text = "Input needs to be an integer between zero and 99999999999999999\n";
}
}
private async void Subtract_Click(object sender, RoutedEventArgs e)
{
//declare and Gather inputs
try
{
long longSubtract1 = long.Parse(InputNumber1.Text);
long longSubtract2 = long.Parse(InputNumber2.Text);
if (longSubtract1 < 0 || longSubtract2 < 0)
{
throw new FormatException("Input less than zero");
}
if (longSubtract1 > 99999999999999999 || longSubtract2 > 99999999999999999)
{
throw new FormatException("Input exceeds Soroban maximum value");
}
//Determine the larger input value
ShowValueOnSoroban(0);
DisplayTextBox.Text = "";
string introString = Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Subtraction/Comment2");
introString += Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Subtraction/Comment1");
ContentDialog msgLargest = new ContentDialog()
{
Title = "Demonstration",
Content = introString,
CloseButtonText = "Ok"
};
await msgLargest.ShowAsync();
DisplayTextBox.Text = Math.Max(longSubtract1, longSubtract2).ToString() + " is displayed on the Soroban above.";
SubtractTwoLongs(Math.Max(longSubtract1, longSubtract2), Math.Min(longSubtract1, longSubtract2), (longSubtract1 < longSubtract2));
}
catch (FormatException fEx)
{
DisplayTextBox.Text = "Error: " + fEx.Message;
}
catch (Exception)
{
DisplayTextBox.Text = "Input needs to be an integer between zero and 99999999999999999\n";
}
}
public async Task MultiplyTwoLongs(long multiplicand, long multiplier, bool showPopUps)
{
int multiplicandStartPos = (multiplier.ToString() + multiplicand.ToString()).Length;
if (showPopUps)
{
ContentDialog msgLargest = new ContentDialog()
{
Title = "Demonstration",
Content = Narratives.GetXMLNarrs("//All_Text_Strings/Soroban_Text_Strings/MultiplyTwoLongs/Comment1"),
CloseButtonText = "Ok"
};
await msgLargest.ShowAsync();
}
DisplayTextBox.Text = "In our example " + multiplier + " goes to the left and " + multiplicand + " starts " + multiplicandStartPos
+ " to the left of the rightmost bar. To begin with it looks like as above.\n";
long initialDisplay = long.Parse(multiplier.ToString().PadRight((16 - multiplicandStartPos), '0') + multiplicand.ToString().PadRight((1 + multiplicandStartPos), '0'));
ShowValueOnSoroban(initialDisplay);
ContinueButton.Visibility = Visibility.Visible;
int intLengthOfMultiplier = multiplier.ToString().Length;
decimal dclToDisplay = (decimal)initialDisplay;
long lngToDisplay = 0;
decimal dclShifter = dcl10ToPower(intLengthOfMultiplier - 2);
DisplayTextBox.Text += Narratives.GetXMLNarrs("//All_Text_Strings/Soroban_Text_Strings/MultiplyTwoLongs/Comment2");
int targetColumn = intLengthOfMultiplier + 1;
//main logic, loop - backwards through each digit of multiplicand
//uses doubles rather than longs because at some points we have to mutiply results by 0.1
int t = 1; // t gets bigger, while i below gets smaller
for (int i = multiplicand.ToString().Length; i > 0; i--)
{
//single digit of the multipliand ***
decimal dclMultiplicandDigit = decimal.Parse((multiplicand.ToString()).Substring((i - 1), 1));
//2nd loop - forwards through each digit of the multiplier
for (int j = 0; j < multiplier.ToString().Length; j++)
{
//single digit of the multiplier ***
decimal dclMultiplerDigit = decimal.Parse(multiplier.ToString().Substring(j, 1));
decimal dclTens = dcl10ToPower(t - j);
decimal dclProduct = dclMultiplerDigit * dclMultiplicandDigit;
DisplayTextBox.Text += " ...add " + dclProduct.ToString().PadLeft(2, '0') + " (" + dclMultiplerDigit + " x " + dclMultiplicandDigit
+ ") to the columns #" + targetColumn + " and #" + (targetColumn - 1) + ",";
if (showPopUps)
{
// try to wait for the button click
clickWaitTask = new TaskCompletionSource <bool>();
await clickWaitTask.Task;
}
//adding the product back into the displayed number on Soroban
dclToDisplay += dclProduct * dclTens * dclShifter;
lngToDisplay = (long)dclToDisplay;
ShowValueOnSoroban(lngToDisplay);
targetColumn--;
}
DisplayTextBox.Text += "\nClear the end of multiplicand (" + dclMultiplicandDigit + ")... \n";
targetColumn = intLengthOfMultiplier + 1 + t;
dclToDisplay -= (dclMultiplicandDigit * dcl10ToPower(t + 2) * dclShifter);
if (showPopUps)
{
// try to wait for the button click
clickWaitTask = new TaskCompletionSource <bool>();
await clickWaitTask.Task;
}
lngToDisplay = (long)dclToDisplay;
ShowValueOnSoroban(lngToDisplay);
t++;
}
if (showPopUps)
{
ContentDialog msgEnd = new ContentDialog()
{
Title = "Finished",
Content = "All individual products are now summed together.",
CloseButtonText = "Ok"
};
await msgEnd.ShowAsync();
}
//deduct the multipler from far left of the Soroban display
ShowValueOnSoroban(lngToDisplay - (long.Parse(multiplier.ToString().PadRight(17, '0'))));
DisplayTextBox.Text += "\nRemove multiplier, leaves final result: " + (multiplier * multiplicand);
ContinueButton.Visibility = Visibility.Collapsed;
}
public MainPage()
{
this.InitializeComponent();
DisplayTextBox.Text = Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Introduction/comment1");
DisplayTextBox.Text += Narratives.GetXMLNarrs("//All_Text_Strings/Main_Text_strings/Introduction/More_info");
}