public void SelectVector(MathBox_Vector selected)
{
selected.select();
if (selected_vectors.Contains(selected))
{
selected_vectors.Remove(selected);
}
else
{
selected_vectors.Add(selected);
}
}
void ToggleSelection(MathBox_Vector selected)
{
selected.select();
if (selected_vectors.Contains(selected))
{
selected_vectors.Remove(selected);
}
else
{
selected_vectors.Add(selected);
}
}
MathBox_Vector LastSelection()
{
if (selected_vectors.Count != 0)
{
MathBox_Vector last = selected_vectors[selected_vectors.Count - 1];
selected_vectors.RemoveAt(selected_vectors.Count - 1);
last.select();
return(last);
}
else
{
return(null);
}
}