C++ 在同一UI中使用QVTKWidget和QOpenGLWidget?
我正在做一个项目,它使用一个自定义子类C++ 在同一UI中使用QVTKWidget和QOpenGLWidget?,c++,qt,opengl,user-interface,vtk,C++,Qt,Opengl,User Interface,Vtk,我正在做一个项目,它使用一个自定义子类QOpenGLWidget来显示一些渲染。在paintGL()方法的末尾,它调用小部件的update()方法来触发一个重绘事件(如果它是可见的)。 现在,我想在我的Ui中添加一个额外的QVTKWidget,我可以使用如下方法: QVBoxLayout* layout = findChild<QVBoxLayout*>("layout_simulation"); QVTKWidget* widget = new QVTKWidget(); //
QOpenGLWidget
来显示一些渲染。在paintGL()
方法的末尾,它调用小部件的update()
方法来触发一个重绘事件(如果它是可见的)。
现在,我想在我的Ui中添加一个额外的QVTKWidget
,我可以使用如下方法:
QVBoxLayout* layout = findChild<QVBoxLayout*>("layout_simulation");
QVTKWidget* widget = new QVTKWidget();
// Setup arrow
vtkSmartPointer<vtkArrowSource> arrowSource = vtkSmartPointer<vtkArrowSource>::New();
[more VTK stuff...]
widget->GetRenderWindow()->AddRenderer(renderer);
renderer->AddActor(arrowActor);
renderer->ResetCamera();
// Add widget to ui
layout->addWidget(widget);
QVBoxLayout*layout=findChild(“布局模拟”);
QVTKWidget*小部件=新的QVTKWidget();
//设置箭头
vtkSmartPointer arrowSource=vtkSmartPointer::New();
[更多VTK内容…]
小部件->GetRenderWindow()->添加渲染器(渲染器);
渲染器->AddActor(arrowcactor);
渲染器->重置摄影机();
//将小部件添加到ui
布局->添加小部件(小部件);
VTK小部件被添加到ui中,并按预期工作。问题是,只要我使用layout->addWidget()
method我的所有其他QOpenGLWidget
对象就会变成黑色,并且不显示任何内容。此外,此黑色不是vtkrender
的背景色,因为即使我更改了VTK小部件的背景色,其他小部件仍然是黑色的。我检查后,paintGL()。我很确定在我的小部件子类中没有使用任何不好的OpenGL代码,所以我猜这与QOpenGLWidget
和QVTKWidget
的内部初始化有关。如果省略所有VTK调用,只添加新创建的QVTKWidget
,也会发生同样的情况
有趣的是,如果我省略layout->addWidget()
调用,VTK会在一个单独的窗口中打开渲染器,所有OpenGL小部件都会正常工作。但我当然想在我的ui中嵌入渲染器
有没有人有过这样的经历,或者你知道我可能会遇到什么陷阱,或者有什么共同的问题可能导致这种情况
顺便说一句:我为我的QOpenGLWidget
子类使用带有自定义着色器的OpenGL 3.3核心概要文件
编辑:我删除了对3.3核心配置文件的请求,现在它使用了4.4兼容配置文件。我猜它现在使用的是与vtkrender
相同的配置文件,因此可以排除这是错误的来源。因此我不知道问题的确切原因,但我解决了它。起初,我发现VTK有第二个小部件类,名为QVTKWidget2
,但不幸的是,它与Qt5.4不完全兼容,因为它使用了旧的QGL类(比如QGLWidget
而不是QOpenGLWidget
)。因此,我开始将其重新实现为QOpenGLWidget
的子类,这非常简单。下面是我的类QVTKWidget3
的源文件,适用于Qt5.4,任何感兴趣的人都可以使用。我只做了有限的测试(因为我仍在学习VTK),但做了一些简单的示例,比如显示一个球体
同样:这只适用于Qt5.4(beta版),因为较旧版本的QOpenGLWidget不提供QOpenGLWidget类
头文件:qvtkwidget3.h
\ifndef QVTKWIDGET3\u H
#定义QVTKWIDGET3_H
#包括“vtkSmartPointer.h”
#包括“vtkGenericOpenGLRenderWindow.h”
#包括“vtkEventQtSlotConnect.h”
#包括“QVTKInteratorAdapter.h”
#包括“QVTKInteractor.h”
#包括
#包括
QVTKWidget3类:公共QOpenGLWidget
{
Q_对象
公众:
QVTKWidget3(QWidget*parent=NULL,Qt::WindowFlags f=0,QSurfaceFormat=QSurfaceFormat::defaultFormat());
虚拟的~QVTKWidget3();
//!设置自定义渲染窗口
虚拟void SetRenderWindow(vtkgenericopengelrenderwindow*);
//!返回当前渲染窗口(如果不存在,则创建一个)
虚拟vtkGenericOpenGLRenderWindow*GetRenderWindow();
//!返回当前渲染窗口的交互器
虚拟QVTKInteractor*GetInteractor();
公众时段:
//!使此vtk渲染窗口成为当前窗口的插槽
虚拟void MakeCurrent();
//!当vtk想知道上下文是否为当前上下文时调用插槽
虚拟void是当前的(vtkObject*调用者、未签名的长vtk_事件、void*客户端_数据、void*调用_数据);
//!vtk要框装窗口时调用插槽
虚空框架();
//!vtk要开始渲染时调用插槽
虚拟void Start();
//!vtk要结束渲染时调用插槽
虚空结束();
//!当vtk想知道窗口是否为直接窗口时调用插槽
虚拟void是直接的(vtkObject*调用者、未签名的长vtk_事件、void*客户端_数据、void*调用_数据);
//!vtk想知道窗口是否支持OpenGL时调用的插槽
虚拟void SupportsOpenGL(vtkObject*调用者、未签名的长vtk_事件、void*客户端数据、void*调用数据);
受保护的:
//!初始化处理程序
虚空初始化egl();
//!油漆处理工
虚空paintGL();
//!调整处理程序的大小
虚空重设gl(int,int);
//!移动处理程序
虚拟void moveEvent(QMoveEvent*事件);
虚拟无效MousePresseEvent(QMouseEvent*事件);
虚拟void mouseMoveEvent(QMouseEvent*事件);
虚拟无效mouseReleaseEvent(QMouseEvent*事件);
虚拟无效按键事件(QKeyEvent*事件);
虚拟作废keyReleaseEvent(QKeyEvent*事件);
虚拟无效事件(QEvent*);
虚拟事件(QEvent*);
虚拟无效wheelEvent(QWheelEvent*);
虚拟void contextMenuEvent(QContextMenuEvent*);
虚拟无效dragEnterEvent(QDragEnterEvent*);
虚拟无效dragMoveEvent(QDragMoveEvent*);
虚拟无效dragLeaveEvent(QDragLeaveEvent*);
虚拟void dropEvent(QDropEvent*);
虚拟bool-focusNextPrevChild(bool);
//成员
vtkGenericOpenGLRenderWindow*m_renWin;
qvtkinteratoradapter*m_irenAdapter;
VTKSmart指针m_连接;
私人:
//!未实现运算符=
QVTKWidget3常量和运算符=(QVTKWidget3常量和);
//!未执行
#ifndef QVTKWIDGET3_H
#define QVTKWIDGET3_H
#include "vtkSmartPointer.h"
#include "vtkGenericOpenGLRenderWindow.h"
#include "vtkEventQtSlotConnect.h"
#include "QVTKInteractorAdapter.h"
#include "QVTKInteractor.h"
#include <QOpenGLWidget>
#include <QSurfaceFormat>
class QVTKWidget3 : public QOpenGLWidget
{
Q_OBJECT
public:
QVTKWidget3(QWidget *parent = NULL, Qt::WindowFlags f = 0, QSurfaceFormat format = QSurfaceFormat::defaultFormat());
virtual ~QVTKWidget3();
//! Set a custom render window
virtual void SetRenderWindow(vtkGenericOpenGLRenderWindow*);
//! Returns the curren render window (creates one if none exists)
virtual vtkGenericOpenGLRenderWindow* GetRenderWindow();
//! Returns interactor of the current render window
virtual QVTKInteractor* GetInteractor();
public slots:
//! Slot to make this vtk render window current
virtual void MakeCurrent();
//! Slot called when vtk wants to know if the context is current
virtual void IsCurrent(vtkObject* caller, unsigned long vtk_event, void* client_data, void* call_data);
//! Slot called when vtk wants to frame the window
virtual void Frame();
//! Slot called when vtk wants to start the render
virtual void Start();
//! Slot called when vtk wants to end the render
virtual void End();
//! Slot called when vtk wants to know if a window is direct
virtual void IsDirect(vtkObject* caller, unsigned long vtk_event, void* client_data, void* call_data);
//! Slot called when vtk wants to know if a window supports OpenGL
virtual void SupportsOpenGL(vtkObject* caller, unsigned long vtk_event, void* client_data, void* call_data);
protected:
//! Initialize handler
virtual void initializeGL();
//! Paint handler
virtual void paintGL();
//! Resize handler
virtual void resizeGL(int, int);
//! Move handler
virtual void moveEvent(QMoveEvent* event);
virtual void mousePressEvent(QMouseEvent* event);
virtual void mouseMoveEvent(QMouseEvent* event);
virtual void mouseReleaseEvent(QMouseEvent* event);
virtual void keyPressEvent(QKeyEvent* event);
virtual void keyReleaseEvent(QKeyEvent* event);
virtual void enterEvent(QEvent*);
virtual void leaveEvent(QEvent*);
virtual void wheelEvent(QWheelEvent*);
virtual void contextMenuEvent(QContextMenuEvent*);
virtual void dragEnterEvent(QDragEnterEvent*);
virtual void dragMoveEvent(QDragMoveEvent*);
virtual void dragLeaveEvent(QDragLeaveEvent*);
virtual void dropEvent(QDropEvent*);
virtual bool focusNextPrevChild(bool);
// Members
vtkGenericOpenGLRenderWindow* m_renWin;
QVTKInteractorAdapter* m_irenAdapter;
vtkSmartPointer<vtkEventQtSlotConnect> m_connect;
private:
//! unimplemented operator=
QVTKWidget3 const& operator=(QVTKWidget3 const&);
//! unimplemented copy
QVTKWidget3(const QVTKWidget3&);
};
#endif // QVTKWIDGET3_H
#include "qvtkwidget3.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkInteractorStyle.h"
#include "vtkInteractorStyleTrackballCamera.h"
#include <QResizeEvent>
QVTKWidget3::QVTKWidget3(QWidget *parent, Qt::WindowFlags f, QSurfaceFormat format)
: QOpenGLWidget(parent, f)
, m_renWin(nullptr)
{
// VTK requires a compatibility profile
format.setProfile(QSurfaceFormat::CompatibilityProfile);
setFormat(format);
// Initialize interactors
m_irenAdapter = new QVTKInteractorAdapter(this);
m_connect = vtkSmartPointer<vtkEventQtSlotConnect>::New();
}
// Destructor
QVTKWidget3::~QVTKWidget3()
{
// Following line is not needed.
// get rid of the VTK window
// this->SetRenderWindow(NULL);
}
// GetRenderWindow
vtkGenericOpenGLRenderWindow* QVTKWidget3::GetRenderWindow()
{
if (this->m_renWin == nullptr)
{
// create a default vtk window
vtkGenericOpenGLRenderWindow* win = vtkGenericOpenGLRenderWindow::New();
this->SetRenderWindow(win);
}
return this->m_renWin;
}
// SetRenderWindow
void QVTKWidget3::SetRenderWindow(vtkGenericOpenGLRenderWindow* w)
{
// do nothing if we don't have to
if(w == this->m_renWin) {
return;
}
// unregister previous window
if(this->m_renWin != nullptr) {
this->m_renWin->Finalize();
this->m_renWin->SetMapped(0);
m_connect->Disconnect(m_renWin, vtkCommand::WindowMakeCurrentEvent, this, SLOT(MakeCurrent()));
m_connect->Disconnect(m_renWin, vtkCommand::WindowIsCurrentEvent, this, SLOT(IsCurrent(vtkObject*, unsigned long, void*, void*)));
m_connect->Disconnect(m_renWin, vtkCommand::WindowFrameEvent, this, SLOT(Frame()));
m_connect->Disconnect(m_renWin, vtkCommand::StartEvent, this, SLOT(Start()));
m_connect->Disconnect(m_renWin, vtkCommand::EndEvent, this, SLOT(End()));
m_connect->Disconnect(m_renWin, vtkCommand::WindowIsDirectEvent, this, SLOT(IsDirect(vtkObject*, unsigned long, void*, void*)));
m_connect->Disconnect(m_renWin, vtkCommand::WindowSupportsOpenGLEvent, this, SLOT(SupportsOpenGL(vtkObject*, unsigned long, void*, void*)));
}
// now set the window
this->m_renWin = w;
if(this->m_renWin != nullptr) {
// if it is mapped somewhere else, unmap it
this->m_renWin->Finalize();
this->m_renWin->SetMapped(1);
// tell the vtk window what the size of this window is
this->m_renWin->SetSize(this->width(), this->height());
this->m_renWin->SetPosition(this->x(), this->y());
// if an interactor wasn't provided, we'll make one by default
if(this->m_renWin->GetInteractor() == NULL)
{
// create a default interactor
QVTKInteractor* iren = QVTKInteractor::New();
iren->SetUseTDx(false);
this->m_renWin->SetInteractor(iren);
iren->Initialize();
// now set the default style
vtkInteractorStyle* s = vtkInteractorStyleTrackballCamera::New();
iren->SetInteractorStyle(s);
iren->Delete();
s->Delete();
}
// tell the interactor the size of this window
this->m_renWin->GetInteractor()->SetSize(this->width(), this->height());
m_connect->Connect(m_renWin, vtkCommand::WindowMakeCurrentEvent, this, SLOT(MakeCurrent()));
m_connect->Connect(m_renWin, vtkCommand::WindowIsCurrentEvent, this, SLOT(IsCurrent(vtkObject*, unsigned long, void*, void*)));
m_connect->Connect(m_renWin, vtkCommand::WindowFrameEvent, this, SLOT(Frame()));
m_connect->Connect(m_renWin, vtkCommand::StartEvent, this, SLOT(Start()));
m_connect->Connect(m_renWin, vtkCommand::EndEvent, this, SLOT(End()));
m_connect->Connect(m_renWin, vtkCommand::WindowIsDirectEvent, this, SLOT(IsDirect(vtkObject*, unsigned long, void*, void*)));
m_connect->Connect(m_renWin, vtkCommand::WindowSupportsOpenGLEvent, this, SLOT(SupportsOpenGL(vtkObject*, unsigned long, void*, void*)));
}
}
// GetInteractor
QVTKInteractor* QVTKWidget3::GetInteractor()
{
return QVTKInteractor::SafeDownCast(this->GetRenderWindow()->GetInteractor());
}
// Initialize
void QVTKWidget3::initializeGL()
{
if(this->m_renWin == nullptr) {
return;
}
this->m_renWin->OpenGLInitContext();
}
// Paint
void QVTKWidget3::paintGL()
{
vtkRenderWindowInteractor* iren = nullptr;
if(this->m_renWin != nullptr) {
iren = this->m_renWin->GetInteractor();
}
if(iren == nullptr || !iren->GetEnabled()) {
return;
}
iren->Render();
}
// Resize
void QVTKWidget3::resizeGL(int w, int h)
{
if(this->m_renWin == nullptr) {
return;
}
this->m_renWin->SetSize(w,h);
// and update the interactor
if(this->m_renWin->GetInteractor() != NULL) {
QResizeEvent e(QSize(w,h), QSize());
m_irenAdapter->ProcessEvent(&e, this->m_renWin->GetInteractor());
}
}
// Move
void QVTKWidget3::moveEvent(QMoveEvent* e)
{
QWidget::moveEvent(e);
if(this->m_renWin == nullptr) {
return;
}
this->m_renWin->SetPosition(this->x(), this->y());
}
// --------
// Slots
// --------
void QVTKWidget3::Start()
{
makeCurrent();
m_renWin->PushState();
m_renWin->OpenGLInitState();
}
void QVTKWidget3::End()
{
m_renWin->PopState();
}
void QVTKWidget3::MakeCurrent()
{
return;
// Automaticly handled by QOpenGLWidget
// this->makeCurrent();
}
void QVTKWidget3::IsCurrent(vtkObject*, unsigned long, void*, void* call_data)
{
bool* ptr = reinterpret_cast<bool*>(call_data);
*ptr = (int)true;
}
void QVTKWidget3::IsDirect(vtkObject*, unsigned long, void*, void* call_data)
{
int* ptr = reinterpret_cast<int*>(call_data);
*ptr = (int)true;
}
void QVTKWidget3::SupportsOpenGL(vtkObject*, unsigned long, void*, void* call_data)
{
int* ptr = reinterpret_cast<int*>(call_data);
*ptr = (int)true;
}
void QVTKWidget3::Frame()
{
if(m_renWin->GetSwapBuffers()) {
this->update();
}
// This callback will call swapBuffers() for us
// because sometimes VTK does a render without coming through this paintGL()
// FOLLOWING NOT TESTED FOR QOPENGLWIDGET
// if you want paintGL to always be called for each time VTK renders
// 1. turn off EnableRender on the interactor,
// 2. turn off SwapBuffers on the render window,
// 3. add an observer for the RenderEvent coming from the interactor
// 4. implement the callback on the observer to call updateGL() on this widget
// 5. overload QVTKWidget3::paintGL() to call m_renWin->Render() instead iren->Render()
}
// ----------------------
// Interaction handlers
// ----------------------
/*! handle mouse press event
*/
void QVTKWidget3::mousePressEvent(QMouseEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
/*! handle mouse move event
*/
void QVTKWidget3::mouseMoveEvent(QMouseEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
/*! handle enter event
*/
void QVTKWidget3::enterEvent(QEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
/*! handle leave event
*/
void QVTKWidget3::leaveEvent(QEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
/*! handle mouse release event
*/
void QVTKWidget3::mouseReleaseEvent(QMouseEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
/*! handle key press event
*/
void QVTKWidget3::keyPressEvent(QKeyEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
/*! handle key release event
*/
void QVTKWidget3::keyReleaseEvent(QKeyEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
void QVTKWidget3::wheelEvent(QWheelEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
void QVTKWidget3::contextMenuEvent(QContextMenuEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
void QVTKWidget3::dragEnterEvent(QDragEnterEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
void QVTKWidget3::dragMoveEvent(QDragMoveEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
void QVTKWidget3::dragLeaveEvent(QDragLeaveEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
void QVTKWidget3::dropEvent(QDropEvent* e)
{
if(this->m_renWin)
{
m_irenAdapter->ProcessEvent(e, this->m_renWin->GetInteractor());
}
}
bool QVTKWidget3::focusNextPrevChild(bool)
{
return false;
}