如何继承 vtkActor？

Question

我正在尝试子class vtkActor class。但是我的 class 一直收到错误 "undefined reference to `vtkIntraLatticeObject::New()"

我找到了这个 link. I tried it but I get "undefined reference to vtkIntraLatticeObject::vtkIntraLatticeObject()". I am also not 100% convinced this is the way to go. I managed to get the following example to work。所以我很难理解我的代码有什么不同。

这是我的代码 class。
vtkIntraLatticeObject.h

#ifndef VTKINTRALATTICEOBJECT_H
#define VTKINTRALATTICEOBJECT_H


#include <vtkSmartPointer.h>
#include <vtkRenderer.h>
#include <vtkObjectFactory.h>
#include <vtkRenderingCoreModule.h>
#include <vtkProperty.h>
#include <string.h>
#include <vtkActor.h>

class VTKRENDERINGCORE_EXPORT vtkIntraLatticeObject : public vtkActor
{
    public:

        vtkTypeMacro(vtkIntraLatticeObject, vtkActor);
        static vtkIntraLatticeObject* New();

        int assignID();

        std::string getObjectTypeName();


    protected:
        int ID;
        static int intralatticeActorCounter;

        vtkActor* Device;

        vtkIntraLatticeObject();
        ~vtkIntraLatticeObject();

};


#endif

vtkIntraLatticeObject.cc

#include "vtkIntraLatticeObject.h"

vtkStandardNewMacro(vtkIntraLatticeObject);

int vtkIntraLatticeObject::intralatticeActorCounter = 0;

vtkIntraLatticeObject::vtkIntraLatticeObject()
{
    int ID = -1;
    this -> Device = vtkActor::New();
}

vtkIntraLatticeObject::~vtkIntraLatticeObject()
{
    this -> Device -> Delete();
}

int vtkIntraLatticeObject::assignID()
{
    ID = intralatticeActorCounter;
    intralatticeActorCounter++;
    return ID;
}

std::string vtkIntraLatticeObject::getObjectTypeName()
{
    return "generic intralattice Object";
}

Answer 1

原来这是我的 cmake 文件，我没有做递归 glob。有问题的文件位于下面两层。所以当编译器运行时，它找不到.cc文件。
我唯一要补充的是 vtkActor 是一个抽象 class。所以实际上并没有实现几个功能。所以当我试图显示我的 vtkActor 时，它是不可见的。这是通过 subclassing vtkOpenGlActor 而不是 vtkActor 或实现缺失的函数来解决的。

如何继承 vtkActor？

how to subclass vtkActor?

c++

oop

vtk

c++11