shamantou blog site

 line->SetPoint1(0,0,0);
 line->SetPoint2(100,0,0);

 cone->SetHeight(i);
 cone->SetRadius(100);

// vtkVideoSource *v=vtkVideoSource::New();
// v->Play();

// vtkDataSetMapper *dmapper=vtkDataSetMapper::New();
// dmapper->SetInput(v->GetOutput());

 map->SetInput(line->GetOutput());
 
 map1->SetInput(cone->GetOutput());

 actor->SetMapper(map);

 actor1->SetMapper(map1);

 render->AddActor(actor);
 render->AddActor(actor1);
 render->AddActor(actor);
 render->AddActor(actor1);

 renwin->AddRenderer(render);
 renwin->SetSize(800,600);

 iren->SetRenderWindow(renwin);
 
 renwin->Render();

 iren->Start();

做了下实验，以确定vtk渲染线的使用方式，

the pipe line should be a serial operation, any of extra modified to some part , we take the last modified.

for example,

map->Setinput(aa->GetOutput());   (1)

map->SetInput(bb->GetOutput());  (2)

then in piple line  (1) is invalid in fact.

and any property changes to the rendering 3d object should changed from the source or the first in the pipeline.

!!