[vtkusers] Cell pick and Delete

[Jothybasu Selvaraj]

Could you change this order

 appendFilter->RemoveInput(selected);
 appendFilter->Update();

Jothy


On Tue, Mar 6, 2012 at 5:49 AM, fanghao <312846295 at qq.com> wrote:

> Ｉ ｕｓｅ ｌｅｆｔ ｂｕｔｔｏｎ ｔｏ ｐｉｃｋ ｔｈｅ ｃｅｌｌ ａｎｄ ｃｈａｎｇ ｉｔ＇ｓ ｃｏｌｏｒ．
> ｗｈｅｎ Ｉ ｐｕｓｈ ｄｏｗｎ ｔｈｅ ｒｉｇｈｔ ｂｕｔｔｏｎ，ｔｈｅ ｓｅｌｅｃｔｅｄ ｃｅｌｌ ｗｉｌｌ ｂｅ ｄｅｌｅｔｅｄ．
>  ｖｔｋＡｐｐｅｎｄＦｉｌｔｅｒ－＞ａｄｄＩｎｐｕｔ（ｓｅｌｅｃｔｅｄ） ａｎｄ
> ｖｔｋＡｐｐｅｎｄＦｉｌｔｅｒ－＞ｒｅｍｏｖｅＩｎｐｕｔ（ｓｅｌｅｃｔｅｄ） ｉｓ ＯＫ。 ｂｕｔ Ｉ ｈａｖｅ ａ ｔｒｏｕｂｌｅ ．
> ｗｈｅｎ Ｉ ｗａｎｔ ｔｏ ｄｅｌｅｔｅ ｔｈｅ ｌａｓｔ ｏｎｅ，ｔｈｅ ｅｒｒｏｒ ｉｎｆｏｒｍａｔｉｏｎ ｗｉｌｌ ｃｏｍｅ ｏｕｔ．
>
>
> ERROR: In ..\..\VTK\Filtering\vtkDemandDrivenPipeline.cxx, line 727
> vtkStreamingDemandDrivenPipeline (0256C690): Input port 0 of algorithm
> vtkAppendFilter(025821B8) has 0 connections but is not optional.xfF
>
> Ａ ｐａｒｔ ｏｆ ｓｏｕｒｃｅ ｃｏｄｅ：
>
> vtkSmartPointer<vtkDataSetCollection> collection =
> vtkSmartPointer<vtkDataSetCollection>::New();
>                        collection = appendFilter->GetInputList();
>                        int NumberOfItems = collection->GetNumberOfItems();
>                        std::cout<<"There are"<< NumberOfItems<<" Item In
> Collection"<<std::endl;
>                        vtkDataSet *selected = collection->GetItem(i);
>
>                        appendFilter->RemoveInput(selected);
>                        appendFilter->Update();
>
>                        //collection = appendFilter->GetInputList();
>                        //std::cout<<"After Remove,There are"<<
> collection->GetNumberOfItems()<<"
> Item In Collection"<<std::endl;
>
>  selectedMapper->SetInputConnection(appendFilter->GetOutputPort());
>                        selectedActor->SetMapper(selectedMapper);
>                        selectedActor->GetProperty()->SetColor(1,0,0);
>
>
> this->Interactor->GetRenderWindow()->GetRenderers()->GetFirstRenderer()->AddActor(selectedActor);
>
>
> http://vtk.1045678.n5.nabble.com/file/n5539990/QQ%E6%88%AA%E5%9B%BE20120306135025.jpg
>
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-- 
Jothy
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