遍历vtkRenderer中的vtkActor

这篇博客 主要 想让大家知道如何遍历Render中的Actor，对Actor进行修改。

vtkActorCollection* actorCollection = render->GetActors();

int num = actorCollection->GetNumberOfItems();

// Description:

 // Initialize the traversal of the collection. This means the data pointer  // is set at the beginning of the list.

//这个函数比较重要，否则getNextActor将没法得到正确的actor

actorCollection->InitTraversal();

for (int i=0;i<num;++i) { vtkActor* actor = actorCollection->GetNextActor(); 然后对每个actor进行修改

}