/// <summary>
/// Button to start the algorithm.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonFindOptimum_Click(object sender, System.EventArgs e)
{
// necessary verifications
// range
if (numericUpDownRangeX1Lower.Value >= numericUpDownRangeX1Upper.Value || numericUpDownRangeX2Lower.Value >= numericUpDownRangeX2Upper.Value)
{
MessageBox.Show(Properties.Resources.ErrorRangeInvalid, Properties.Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// expression empty
if (comboBoxInputExpression.Text == "")
{
MessageBox.Show(Properties.Resources.ErrorExpressionEmpty, Properties.Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// problem dimension
int dimension = decimal.ToInt32(numericUpDownDimension.Value);
// algorithm restrictions
Solver.Restrictions restrictions = new Solver.Restrictions(
decimal.ToInt32(numericUpDownNumberOfIters.Value),
(float)numericUpDownArgDiff.Value,
(float)numericUpDownFunValDiff.Value,
(float)numericUpDownMinStepSize.Value,
(float)numericUpDownRangeWidth.Value
);
// expression string
Expression = comboBoxInputExpression.Text;
// start algorithm
Steps = FindOptimum(
dimension,
StartingPoint,
restrictions,
Expression,
new Range((float)numericUpDownRangeX1Lower.Value, (float)numericUpDownRangeX1Upper.Value),
new Range((float)numericUpDownRangeX2Lower.Value, (float)numericUpDownRangeX2Upper.Value)
);
buttonShowSteps.Enabled = true;
}
/// <summary>
/// Start the algorithm; if the problem is 2-dimensional, visualize the results.
/// </summary>
/// <param name="dimension"></param>
/// <param name="startingPoint"></param>
/// <param name="restrictions"></param>
/// <param name="expression"></param>
/// <param name="horizontalRange"></param>
/// <param name="verticalRange"></param>
private List <float[]> FindOptimum(int dimension, float[] startingPoint, Solver.Restrictions restrictions, string expression, Range horizontalRange, Range verticalRange)
{
// solver instance
Solver solver = new Solver(dimension, expression, restrictions);
// find optimal point
bool pointFound = solver.FindOptimalPoint(startingPoint);
// visualize results if dim = 2
solver.VisualizeResults(
pictureBoxGraph,
horizontalRange,
verticalRange);
// print optimum in messagebox (if it was found)
if (pointFound)
{
string optimum = string.Format("[{0}]", string.Join(", ", solver.ConsecutivePointSeries.Last()));
MessageBox.Show(string.Format(Properties.Resources.MiscOptimum, optimum), Properties.Resources.InfoOptimumFound, MessageBoxButtons.OK, MessageBoxIcon.Information);
}
return(solver.ConsecutivePointSeries);
}
