/// <summary>
/// Constructor. Initializes all starting parameters.
/// </summary>
/// <param name="target"></param>
/// <param name="rangeH"></param>
/// <param name="rangeV"></param>
public GraphRenderer(PictureBox target, ExpressionExt expression, Range rangeH, Range rangeV)
{
TargetPictureBox = target;
RangeHorizontal = rangeH;
RangeVertical = rangeV;
AlgebraicExpression = expression;
if (TargetPictureBox.Image == null)
{
TargetPictureBox.Image = new Bitmap(TargetPictureBox.Width, TargetPictureBox.Height);
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="title"></param>
/// <param name="dimension"></param>
/// <param name="points"></param>
public FormPoint(string title, int dimension, ExpressionExt expression = null, List <float[]> points = null)
{
InitializeComponent();
Dimension = dimension;
Text = title;
// add one row for the user to edit
if (expression == null || points == null)
{
for (int i = 1; i < Dimension + 1; i++)
{
dataGridViewCoordinates.Columns.Add($"x{i}", $"x{i}");
}
dataGridViewCoordinates.ReadOnly = false;
dataGridViewCoordinates.Rows.Add();
}
else // add all points provided
{
// add header
dataGridViewCoordinates.Columns.Add("lp", "lp");
dataGridViewCoordinates.Columns.Add("f_x", "f(x)");
for (int i = 1; i < Dimension + 1; i++)
{
dataGridViewCoordinates.Columns.Add($"x{i}", $"x{i}");
}
// set the datagridview to readonly
dataGridViewCoordinates.ReadOnly = true;
// cancel button is irrelevant, hide it
buttonCancel.Visible = false;
// move accept button as though there is no cancel button
buttonOk.Location = buttonCancel.Location;
for (int i = 0; i < points.Count; i++)
{
string[] row = new string[points[0].Count() + 2];
row[0] = $"x({i})";
row[1] = expression.Evaluate(points[i]).ToString();
points[i].Select(x => x.ToString()).ToArray().CopyTo(row, 2);
dataGridViewCoordinates.Rows.Add(row);
}
}
dataGridViewCoordinates.Select();
}
/// <summary>
/// Constructor. Initializes target PictureBox and Expression, leaving Range default.
/// </summary>
/// <param name="target"></param>
/// <param name="expression"></param>
public GraphRenderer(PictureBox target, ExpressionExt expression)
: this(target, expression, new Range(-5, 5), new Range(-5, 5))
{
}
/// <summary>
/// Writes point info to the console, providing optional additional information.
/// </summary>
/// <param name="point"></param>
/// <param name="expression"></param>
/// <param name="additionalInfo"></param>
public static void ShowPointInfo(float[] point, ExpressionExt expression, string additionalInfo = "")
{
Console.WriteLine(additionalInfo + " " + GeneratePointString(point) + ", val=" + expression.Evaluate(point));
}