/**
  * Update the specified resource in storage.
  *
  * @param  int  $id
  * @return Response
  */
 public function update($id)
 {
     $simulation = Simulation::find($id);
     if (Input::has('caption')) {
         $simulation->Caption = Input::get('caption');
     }
     $simulation->save();
     if (Input::has('Combination_Id')) {
         $simulation->Combination_Id = Input::get('Combination_Id');
         $simulation->save();
         $this->rebuild($simulation->Id);
     }
     foreach ($simulation->Parameters as $parameter) {
         if (Input::has('parameters-' . $parameter->Id)) {
             $parameter->pivot->ValueSet = Input::get('parameters-' . $parameter->Id);
             $parameter->pivot->save();
         }
     }
     if (Input::get('new-parameter-name') && Input::get('new-parameter-value') != '') {
         $parameter = Parameter::whereName(Input::get('new-parameter-name'))->first();
         if ($parameter) {
             $simulation->Parameters()->attach($parameter, ["ValueSet" => Input::get('new-parameter-value')]);
             $simulation->save();
         }
     }
     foreach ($simulation->SimulationNeedles as $simulationNeedle) {
         foreach ($simulationNeedle->Parameters as $parameter) {
             if (Input::has('needle-parameters-' . $simulationNeedle->Id . '-' . $parameter->Id)) {
                 $parameter->pivot->ValueSet = Input::get('needle-parameters-' . $simulationNeedle->Id . '-' . $parameter->Id);
                 $parameter->pivot->save();
             }
         }
         $newparameterprefix = 'needle-' . $simulationNeedle->Id . '-new-parameter-';
         if (Input::get($newparameterprefix . 'name') && Input::get($newparameterprefix . 'value') != '') {
             $parameter = Parameter::whereName(Input::get($newparameterprefix . 'name'))->first();
             if ($parameter) {
                 $simulationNeedle->Parameters()->attach($parameter, ["ValueSet" => Input::get($newparameterprefix . 'value')]);
                 $simulationNeedle->save();
             }
         }
     }
     if (Input::get('removing')) {
         if (Input::get('simulation-needle-id')) {
             $simulationNeedle = SimulationNeedle::find(Input::get('simulation-needle-id'));
             $simulationNeedle->delete();
         }
         if (Input::get('region-remove-id')) {
             $region = Region::find(Input::get('region-remove-id'));
             if (Input::get('region-remove-location')) {
                 $simulation->Regions()->newPivotStatementForId($region->Id)->where('Location', '=', Input::get('region-remove-location'))->delete();
             } else {
                 $simulation->Regions()->newPivotStatementForId($region->Id)->whereNull('Location')->delete();
             }
         }
     } else {
         if (Input::get('needle-id')) {
             $needle = Needle::find(Input::get('needle-id'));
             $simulationNeedle = new SimulationNeedle();
             $simulationNeedle->Simulation_Id = $simulation->Id;
             $simulationNeedle->Needle_Id = $needle->Id;
             $target = json_decode(Input::get('needle-target'));
             $simulationNeedle->Target_Id = PointSet::create(['X' => $target[0], 'Y' => $target[1], 'Z' => $target[2]])->Id;
             $entry = json_decode(Input::get('needle-entry'));
             $simulationNeedle->Entry_Id = PointSet::create(['X' => $entry[0], 'Y' => $entry[1], 'Z' => $entry[2]])->Id;
             $simulationNeedle->save();
         }
         if (Input::get('region-id')) {
             $region = Region::find(Input::get('region-id'));
             $simulation->Regions()->attach($region, ['Location' => Input::get('region-location')]);
             $simulation->save();
         }
     }
     return Redirect::route('simulation.edit', $id);
 }