/// <summary>
/// Create new selection that result of toggle selection given two selections.
/// </summary>
/// <param name="selection">Current selection</param>
/// <param name="newSelection">New selection</param>
/// <returns>Toggle selection result.</returns>
public static EditCurveKeySelection ToggleSelection(
EditCurveKeySelection selection, EditCurveKeySelection newSelection)
{
EditCurveKeySelection result = selection.Clone();
foreach (long key in newSelection.Keys)
{
EditCurveSelections s;
if (result.TryGetValue(key, out s))
{
// Both selection contains same key, toggle selections value.
s = s ^ newSelection[key];
if (s != EditCurveSelections.None)
{
result[key] = s;
}
else
{
result.Remove(key);
}
}
else
{
result.Add(key, newSelection[key]);
}
}
return(result);
}
/// <summary>
/// Create clone of a selection.
/// </summary>
/// <param name="selection"></param>
/// <returns></returns>
public EditCurveKeySelection Clone()
{
EditCurveKeySelection newSelection = new EditCurveKeySelection();
foreach (long keyId in Keys)
{
newSelection.Add(keyId, this[keyId]);
}
return(newSelection);
}