public override LayerChange[] Use(Layer layer, Coordinates[] mouseMove, Color color)
{
LayerChange[] result = new LayerChange[affectedLayers.Length];
var end = mouseMove[0];
var lastSelection = currentSelection.ToArray();
for (int i = 0; i < affectedLayers.Length; i++)
{
if (currentSelection.Length > 0)
{
endPixelColors = BitmapUtils.GetPixelsForSelection(affectedLayers, currentSelection);
var changes = MoveSelection(affectedLayers[i], mouseMove);
ClearSelectedPixels(affectedLayers[i], lastSelection);
changes = RemoveTransparentPixels(changes);
result[i] = new LayerChange(changes, affectedLayers[i]);
}
else
{
var vector = Transform.GetTranslation(lastMouseMove, end);
affectedLayers[i].Offset = new Thickness(affectedLayers[i].OffsetX + vector.X, affectedLayers[i].OffsetY + vector.Y, 0, 0);
result[i] = new LayerChange(BitmapPixelChanges.Empty, affectedLayers[i]);
}
}
lastMouseMove = end;
return(result);
}
private Coordinates[] TranslateSelection(Coordinates end)
{
Coordinates translation = Transform.GetTranslation(lastMouseMove, end);
return(Transform.Translate(currentSelection, translation));
}