How to use updateGL method qith QGLView
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UpdateGL method is found in QGLWidget class. Since, QGLView is an extension of QGLWidget, it should contain a method to update. I need to put my update code somewhere. One option is to use the QTimer but is there any other possibility? Some reference on this question is here.
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Hi,
I've corrected that, but anyway, if you plan to use Qt3D you should rather take a look at the dev branch which is the future of Qt3D
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Hello, thanks for the reply. Is there any way to explicitly call the paintgl method in QT?
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Just call update, that should be enough
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Is the update() method present in the QGLView class. Because, whenever I write update, I get an error saying identifier not found
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It's the only slot of QGLView. What version of Qt3D are you using ?
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I am using qt3d for QT5.3.2.
https://qt.gitorious.org/qt/qt3d/source/8a9723d7420829a2ba0141a9f7d8dc8cd11d8331:It worked for me. My QGLview was ingheriting the QWindow class earlier. I changed it to inherit the Qwidget class instead and I could find the update() function.
However, when you say QGLview slot. I tried it without the QWidget class and it did not work for me. But, with Qwidget it works as you mentioned.Thank you for your support. I hope you could clarify on the update slot for QGLview without inheriting the QWidget?
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I tried this way. But , I am still getting the same error.
C:\Qt\qt-qt3d\tutorials\qt3d\cube4\cubeview.cpp:128: error: undefined reference to `CubeView::update()'cubeview.h
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#ifndef CUBEVIEW_H
#define CUBEVIEW_H#include "qglview.h"
#include "qgltexture2d.h"QT_BEGIN_NAMESPACE
class QGLSceneNode;
QT_END_NAMESPACE//! [1]
class CubeView : public QGLView
{
//! [1]
Q_OBJECT
public:CubeView(QWindow *parent = 0); ~CubeView();public slots:
void update_action();
public Q_SLOTS:
void update();protected:
void paintGL(QGLPainter *painter);//! [2]private:
QGLSceneNode *cube;
QGLSceneNode cursor;
QGLTexture2D logo;
QGLTexture2D texture;
QGLTexture2D handcursor;};
//! [2]#endif
@cubeview.cpp
@
#include "cubeview.h"
#include "qglbuilder.h"
#include "qglcube.h"
#include "haptics.h"
#include <iostream>
#include <QThread>
#include <QTimer>
#include <QDebug>
#include "qglpainter.h"
#include "qgraphicstranslation3d.h"//! [1] constructor, initialize the cube, cursor and camera
CubeView::CubeView(QWindow *parent)
{
//! [1]
QGLBuilder builder1;
builder1 << QGL::Faceted;
builder1 << QGLCube(2);
cube = builder1.finalizedSceneNode();QGLBuilder cursor_builder; cursor_builder <<QGL::Faceted; cursor_builder <<QGLCube(0.5); cursor=cursor_builder.finalizedSceneNode(); //camera setup camera()->setFieldOfView(35); camera()->setNearPlane(1); camera()->setFarPlane(15);//! [2] set texture for cube and cursor
logo.setImage(QImage(QLatin1String(":/blackcircle.jpg")));
handcursor.setImage(QImage(QLatin1String(":/hand.jpg")));//timer to call the update action slot QTimer *timer = new QTimer(this); connect(timer, SIGNAL(timeout()), this, SLOT(update_action())); timer->start(50);}
//! [2] update the cursor based on the haptic position
void CubeView::update_action()
{
QVector3D *p2=new QVector3D(1,1,1--);
cursor->setPosition(*p2);
update();
}CubeView::~CubeView()
{
logo.cleanupResources();
delete cube;
delete cursor;
}
//! [3]
void CubeView::paintGL(QGLPainter *painter)
{
painter->setStandardEffect(QGL::LitDecalTexture2D);
painter->setFaceColor(QGL::AllFaces, QColor(170, 202, 0));
logo.bind();cube->draw(painter); handcursor.bind(); cursor->draw(painter);}
@
