[Interest] [QT3D] Has anyone figured out how to use a QSkyboxEntity?

[Igor Mironchik]

Hi,


On 19.11.2017 01:00, Pierre Chicoine wrote:
> This is the only place I found on the Internet that Igor sent me.https://github.com/igormironchik/3Dtree 
> <https://github.com/igormironchik/3Dtree>
> Thank Igor.
> Strange to note. It only works in his program in Kubuntu. When I try it, using his program with Android,
> or mine, in Kubuntu or Android, I get this message, which repeats over and over again:

It works on Windows too, I guess that it will work on MacOS. But I guess 
that it won't work on any mobile platform because 3Dtree mixes Qt 
widgets with Qt3D, I embed Qt3DExtras::Qt3DWindow to Qt widget based 
application...

I tested simplest example on Android 4.2.2 and it works...

int main( int argc, char ** argv )
{
     QApplication app( argc, argv );

     QScopedPointer< Qt3DExtras::Qt3DWindow > view( new 
Qt3DExtras::Qt3DWindow );

     QScopedPointer< Qt3DCore::QEntity > root( new Qt3DCore::QEntity );

     // Camera
     Qt3DRender::QCamera * cameraEntity = view->camera();

     cameraEntity->lens()->setPerspectiveProjection(
         45.0f, 16.0f / 9.0f, 0.1f, 1000.0f );
     cameraEntity->setPosition( QVector3D( 0.0f, 5.0f, 20.0f ) );
     cameraEntity->setUpVector( QVector3D( 0.0f, 1.0f, 0.0f ) );
     cameraEntity->setViewCenter( QVector3D( 0.0f, 5.0f, 0.0f ) );

     Qt3DCore::QEntity * lightEntity = new Qt3DCore::QEntity( root.data() );

     Qt3DRender::QPointLight * light = new Qt3DRender::QPointLight( 
lightEntity );
     light->setColor( Qt::white );
     light->setIntensity( 1.0f );
     lightEntity->addComponent( light );

     Qt3DCore::QTransform * lightTransform = new Qt3DCore::QTransform(
         lightEntity );
     lightTransform->setTranslation( cameraEntity->position() );
     lightEntity->addComponent( lightTransform );

     Qt3DExtras::QSkyboxEntity * skyBox = new Qt3DExtras::QSkyboxEntity( 
root.data() );
     skyBox->setBaseName( QStringLiteral( "qrc:/res/skybox" ) );
     skyBox->setExtension( QStringLiteral( ".tga" ) );

     const float baseScale = 0.1f;

     Qt3DCore::QTransform * skyTransform = new Qt3DCore::QTransform( 
skyBox );
     skyTransform->setTranslation( QVector3D( 0.0f, baseScale / 8.0f - 
0.001f, 0.0f ) );
     skyTransform->setScale3D( QVector3D( baseScale, baseScale / 4.0f, 
baseScale ) );
     skyBox->addComponent( skyTransform );

     view->setRootEntity( root.take() );

     view->show();

     return app.exec();
}

> [Qt3DRender::GLTexture] No QTextureImageData generated from functor yet, texture will be invalid for this frame.
> There a fixed bug In Qt's bug list that shows that this message has been fixed. So obviously, I don't understand
> what I'm doing wrong or it's a real bug.
> So I'm asking once more. Has anyone figured out how to properly use QSkyboxEntity? Any input would be appreciated.
> Thanks
> pQSkyboxEntity=newQt3DExtras::QSkyboxEntity(pQEntity);
> pQSkyboxEntity->setBaseName(:/media/Skyboxes/skybox);
> pQSkyboxEntity->setExtension("tga");
> constfloatbaseScale=0.1f;
>      Qt3DCore::QTransform*skyTransform=newQt3DCore::QTransform();
> skyTransform->setTranslation(QVector3D(0.0f,baseScale/8.0f-0.001f,0.0f));
> skyTransform->setScale3D(QVector3D(baseScale,baseScale/4.0f,baseScale));
>      pQSkyboxEntity->addComponent(skyTransform);
> }
>
>
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