public MyMatrix GetMatrix()
{
if (ans == null)
{
ans = GetMatrixInternal();
MatrixChanged?.Invoke(ans);
}
return(ans);
}
void UpdateMatrix()
{
Matrix?matrix = null;
if (_visual != null && _visual.VisualRoot != null)
{
matrix = _visual.TransformToVisual(_visual.VisualRoot);
}
if (Matrix != matrix)
{
Matrix = matrix;
MatrixChanged?.Invoke();
}
}
/// <summary>
/// Indexer retrieves data from a square matrix at two indices.
/// </summary>
/// <param name="i"> Vertical node index. </param>
/// <param name="j"> Horizontal node index </param>
/// <returns></returns>
public T this[int i, int j]
{
get
{
CheckIndex(i);
CheckIndex(j);
return(Data[i * Rank + j]);
}
set
{
CheckIndex(i);
CheckIndex(j);
if (!value.Equals(Data[i * Rank + j]))
{
MatrixChanged?.Invoke(i, j, Data[i * Rank + j], value);
Data[i * Rank + j] = value;
}
}
}
protected virtual void OnMatrixChanged(MatrixChangedEventArgs <T> e)
{
MatrixChanged?.Invoke(this, e);
}
protected void OnMatrixChanged()
{
MatrixChanged?.Invoke(this, EventArgs.Empty);
UpdateMatrix();
}
/// <summary>
/// Method ReceiveEvent is shell for event MatrixChanged.
/// </summary>
/// <param name="firstIndex"> First index of node from square matrix. </param>
/// <param name="secondIndex"> Second index of node from square matrix. </param>
/// <param name="oldValue"> Value before change. </param>
/// <param name="newValue"> New value. </param>
protected virtual void ReceiveEvent(int firstIndex, int secondIndex, T oldValue, T newValue)
{
MatrixChanged?.Invoke(firstIndex, secondIndex, oldValue, newValue);
}
protected void OnMatrixChanged(object sender, MatrixEventArgs e)
{
//Console.WriteLine("Changed!");
MatrixChanged?.Invoke(sender, e);
}
public void OnMatrixChanged() => MatrixChanged?.Invoke(this, new EventArgs());