VTKをwxWidgetsの上に張り付ける

// https://docs.wxwidgets.org/3.0/overview_helloworld.html

// プリプロセッサに以下二つを追加
// __WXMSW__
// WXUSINGDLL

// サブシステムをWindowsに設定(WinMainで呼び出すので)
// Windows (/SUBSYSTEM:WINDOWS)

#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif

#include <wx/gdicmn.h> // wxPointに必要
#include <wx/frame.h>  // wxFrameに必要

#ifdef _DEBUG
#pragma comment(lib,"wxbase32ud.lib")
#pragma comment(lib,"wxbase32ud_net.lib")
#pragma comment(lib,"wxbase32ud_xml.lib")
#pragma comment(lib,"wxmsw32ud_adv.lib")
#pragma comment(lib,"wxmsw32ud_aui.lib")
#pragma comment(lib,"wxmsw32ud_core.lib")
#pragma comment(lib,"wxmsw32ud_gl.lib")
#pragma comment(lib,"wxmsw32ud_html.lib")
#pragma comment(lib,"wxmsw32ud_media.lib")
#pragma comment(lib,"wxmsw32ud_propgrid.lib")
#pragma comment(lib,"wxmsw32ud_qa.lib")
#pragma comment(lib,"wxmsw32ud_ribbon.lib")
#pragma comment(lib,"wxmsw32ud_richtext.lib")
#pragma comment(lib,"wxmsw32ud_stc.lib")
#pragma comment(lib,"wxmsw32ud_webview.lib")
#pragma comment(lib,"wxmsw32ud_xrc.lib")

#else

#pragma comment(lib,"wxbase32u.lib")
#pragma comment(lib,"wxbase32u_net.lib")
#pragma comment(lib,"wxbase32u_xml.lib")
#pragma comment(lib,"wxmsw32u_adv.lib")
#pragma comment(lib,"wxmsw32u_aui.lib")
#pragma comment(lib,"wxmsw32u_core.lib")
#pragma comment(lib,"wxmsw32u_gl.lib")
#pragma comment(lib,"wxmsw32u_html.lib")
#pragma comment(lib,"wxmsw32u_media.lib")
#pragma comment(lib,"wxmsw32u_propgrid.lib")
#pragma comment(lib,"wxmsw32u_qa.lib")
#pragma comment(lib,"wxmsw32u_ribbon.lib")
#pragma comment(lib,"wxmsw32u_richtext.lib")
#pragma comment(lib,"wxmsw32u_stc.lib")
#pragma comment(lib,"wxmsw32u_webview.lib")
#pragma comment(lib,"wxmsw32u_xrc.lib")

#endif

#include <vtkCylinderSource.h>
#include <vtkPolyDataMapper.h>

/////////////////////////////////////
/////////////////////////////////////
/////////////////////////////////////

#include <string>
#include <wx/wx.h>
#include <wx/window.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkAutoInit.h>

#pragma comment(lib,"opengl32.lib")
#pragma comment(lib, "crypt32")
#pragma comment(lib, "ws2_32.lib")
#pragma comment(lib, "Psapi.Lib")
#pragma comment(lib, "winmm.lib")
#pragma comment(lib, "shlwapi.lib")
#pragma comment(lib, "dbghelp.lib")

VTK_MODULE_INIT(vtkRenderingOpenGL2); // VTK 8 以降で必要
VTK_MODULE_INIT(vtkInteractionStyle);

// VTKを表示するwxPanelを表示する
class MyVTKPanel : public wxPanel {
    vtkSmartPointer<vtkRenderWindow> renderWindow;
    vtkSmartPointer<vtkRenderer> renderer;
public:

    vtkSmartPointer<vtkRenderer> getRenderer() {return renderer;}
    vtkSmartPointer<vtkRenderWindow> getRenderWindow(){return renderWindow;}

    MyVTKPanel(wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size) : wxPanel(parent, id, pos, size)
    {
        renderer = vtkSmartPointer<vtkRenderer>::New();
        renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
        renderWindow->AddRenderer(renderer);
        renderWindow->SetParentId(reinterpret_cast<void*>(this->GetHandle()));// PanelにVTKを設定
        renderWindow->SetSize(this->GetSize().GetWidth(), this->GetSize().GetHeight());

        // 背景を黒に設定
        renderer->SetBackground(0.0, 0.0, 0.0);

        // wxWidgets ウィンドウの背景色を設定
        // これは表示されないので黄色が出てきたらVTK表示が失敗している証拠
        this->SetBackgroundColour(*wxYELLOW);


        // ペイントイベントのハンドラを設定
        this->Bind(wxEVT_PAINT, &MyVTKPanel::OnPaint, this);

        // サイズ変更イベントのハンドラを設定
        this->Bind(wxEVT_SIZE, &MyVTKPanel::OnSize, this);

        this->Layout();
    }


    // 描画イベントのハンドラ
    void OnPaint(wxPaintEvent& event) {
        wxPaintDC dc(this);
        renderWindow->Render();
    }

    // サイズ変更イベントのハンドラ
    void OnSize(wxSizeEvent& event) {
        renderWindow->SetSize(this->GetSize().GetWidth(), this->GetSize().GetHeight());
        renderWindow->Render();
    }

};

// マウスで回転・拡大縮小・平行移動を行う設定
void interactor(vtkSmartPointer<vtkRenderWindow> rendererwindow) {
    vtkSmartPointer<vtkRenderWindowInteractor>renderWindowInteractor;
    renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
    renderWindowInteractor->SetRenderWindow(rendererwindow);
}

// 表示するアイテムを追加
void setitem(vtkSmartPointer<vtkRenderer> renderer) {
    // Create a vtkCylinderSource
    vtkSmartPointer<vtkCylinderSource> cylinderSource = vtkSmartPointer<vtkCylinderSource>::New();
    cylinderSource->SetCenter(0.0, 0.0, 0.0);
    cylinderSource->SetRadius(5.0);
    cylinderSource->SetHeight(7.0);
    cylinderSource->SetResolution(100);

    // Create a mapper and actor
    vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    mapper->SetInputConnection(cylinderSource->GetOutputPort());
    vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
    actor->SetMapper(mapper);

    renderer->AddActor(actor);
}

/////////////////////////////////////
class MyFrame : public wxFrame
{
public:

    MyFrame() : wxFrame(NULL, wxID_ANY, "VTK wx サンプル", wxDefaultPosition, wxSize(400, 300))
    {
        Centre();// ウィンドウを画面中央に表示

        // VTKを張り付け
        MyVTKPanel* vtkpanel = new MyVTKPanel(this, wxID_ANY, wxDefaultPosition, wxSize(300, 300));
        
        // マウスイベントを有効にする
        interactor(vtkpanel->getRenderWindow());

        // アイテムを追加
        setitem(vtkpanel->getRenderer());

        // ウィンドウをセンタリング
        wxBoxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
        sizer->Add(0, 0, 1, wxEXPAND, 5);
        sizer->Add(vtkpanel, 0, wxALIGN_CENTER | wxALL, 5);
        sizer->Add(0, 0, 1, wxEXPAND, 5);
        this->SetSizer(sizer);

    }
};

class MyApp : public wxApp
{
public:
    virtual bool OnInit()
    {
        MyFrame* frame = new MyFrame();

        // ウィンドウサイズを600x600
        frame->SetSize(600, 600);

        frame->Show(true);


        return true;
    }
};

/////////////////////////////////////
/////////////////////////////////////
/////////////////////////////////////

// WinMainをマクロで定義
wxIMPLEMENT_APP(MyApp);