private void OnMouseUp(object sender, MouseButtonEventArgs e)
{
if (_mouseButtonDown)
{
_mouseButtonDown = false;
Point endPoint = Mouse.GetPosition(canvas);
int leftX = Math.Min((int)_startPoint.X, (int)endPoint.X);
int upY = Math.Min((int)_startPoint.Y, (int)endPoint.Y);
int rightX = Math.Max((int)_startPoint.X, (int)endPoint.X);
int downY = Math.Max((int)_startPoint.Y, (int)endPoint.Y);
SymEnt newEnt = _activeCommand.Exectue(leftX, rightX, upY, downY, _nextID);
if (newEnt != null)
{
_world.AddEnt(newEnt);
_world.Redraw(canvas);
++_nextID;
}
_selectionRegion.Reset();
}
}
public void AddEnt(SymEnt newEnt)
{
_entities.Add(newEnt);
}