public SpeciesViewModel(BoidSpecies species, SimulationViewModel parent)
 {
     this.sim        = parent;
     this.Species    = species;
     this.AddSpecies = new AddSpeciesCommand(this);
     Parameters      = new ParametersViewModel(species.Bindings);
 }
 public StartStopTimerCommand(SimulationViewModel vm)
 {
     viewModel = vm;
 }