protected override void OnSelectionChanged()
{
base.OnSelectionChanged();
bool canOperate = SelectedHitObjects.Count() > 1 || SelectedHitObjects.Any(s => s is Slider);
SelectionBox.CanRotate = canOperate;
SelectionBox.CanScaleX = canOperate;
SelectionBox.CanScaleY = canOperate;
}
/// <summary>
/// Returns a gamefield-space quad surrounding the provided points.
/// </summary>
/// <param name="points">The points to calculate a quad for.</param>
private Quad getSurroundingQuad(IEnumerable <Vector2> points)
{
if (!SelectedHitObjects.Any())
{
return(new Quad());
}
Vector2 minPosition = new Vector2(float.MaxValue, float.MaxValue);
Vector2 maxPosition = new Vector2(float.MinValue, float.MinValue);
// Go through all hitobjects to make sure they would remain in the bounds of the editor after movement, before any movement is attempted
foreach (var p in points)
{
minPosition = Vector2.ComponentMin(minPosition, p);
maxPosition = Vector2.ComponentMax(maxPosition, p);
}
Vector2 size = maxPosition - minPosition;
return(new Quad(minPosition.X, minPosition.Y, size.X, size.Y));
}