[Interest] [Qt3D] Is it usable yet?

[Sean Harmer]

Hi,

On Wednesday 12 December 2012 02:46:54 Ramakanthreddy_Kesireddy wrote:
> Well I started my thread earlier with title as custom QQuick3D text but I
> couldnot get any response.

Apologies for the delay. I've been travelling to DevDays and back.

> Iam getting issues in drawItem() of below code that I tried so far:-

As for your specific issue, I am unable to help with it right now. This is 
part of the code I am not yet familiar with. Please be patient as we get up to 
speed with this code-base.

Have you tried debugging this yourself? What exact artefacts do you see when 
trying to use such items?

Cheers,

Sean

> 
> 
> 
> 
> Class TextItem3D: public QQuickItem3D
> {
> Q_OBJECT
> 
> Q_PROPERTY(qreal xPos READ xPos WRITE setXPos NOTIFY positionChanged)
> 
> Q_PROPERTY(qreal yPos READ yPos WRITE setYPos NOTIFY positionChanged)
> 
> Q_PROPERTY(QString textString READ textString WRITE setTextString NOTIFY
> textStringChanged)
> 
> Public:
> 
> Explicit TextItem3D(QObject *parent=0);
> ~TextItem3D() { }
> 
> qreal xPos() const { return x;}
> void setXPos(const qreal &xPos);
> 
> qreal yPos() const { return y;}
> void setYPos(const qreal &yPos)
> 
> qreal zPos() const { return z;}
> void setZPos(const qreal &zPos);
> 
> QString textString() const { return mTextString;}
> Void setTextString(const QString &);
> 
> Q_SIGNALS:
> void positionChanged();
> void textStringChanged();
> 
> protected:
> void drawItem(QGLPainter *painter)
> 
> private:
> qreal x,y,z;
> QString m_TextString;
> QGLSceneNode *m_geometry;
> bool m_ChangeFlag;
> };QML_DECLARE_TYPE(TextItem3D)
> 
> 
> void TextItem3D::setXPos(qreal xPosition)
> {
> If(x!=XPosition)
> {
>    x= XPosition ;
> m_ChangeFlag = true;
> emit PositionChanged();
> update();
> }
> 
> Void TextItem3D::drawItem(QGLPainter *painter)
> {
>     If(m_ChangeFlag || m_Geometry) {
>         If(m_Geometry) delete m_Geometry;
> 
> QGLBuilder builder;
> QGeometryData textCollection;
> 
> builder.newSection();
> 
> //INSERT Bitmap text OpenGL code like Points or Line
> builder.appendAttribute() //wrong….?
> builder.CurrentNode() ->setX(x);
> builder.CurrentNode() ->setY(y);
> builder.CurrentNode() ->setZ(z);
> 
> builder.CurrentNode() ->setDrawingMode();//wrong …?
> 
> 
> m_Geometry = builder.finalizedSceneNode();
> m_ChangeFlag = false;
> }
> m_Geomtery->draw(painter);
> }
> 
> 
> 
> Thanks and Regards,
> 
> Ramakanth
> 
> ________________________________
> From:
> interest-bounces+ramakanthreddy_kesireddy=mahindrasatyam.com at qt-project.org
> [interest-bounces+ramakanthreddy_kesireddy=mahindrasatyam.com at qt-project.or
> g] on behalf of BOUCARD Olivier [boucard_olivier at yahoo.fr] Sent: Tuesday,
> December 11, 2012 1:43 PM
> To: interest at qt-project.org
> Subject: Re: [Interest] [Qt3D] Is it usable yet?
> 
> Hi,
> 
> It would be preferable if you start your own thread.
> 
> I'm sorry but I cannot help. I still don't know how to create custom Item3D.
> 
> Olivier.
> 
> ________________________________
> De : Ramakanthreddy_Kesireddy <Ramakanthreddy_Kesireddy at mahindrasatyam.com>
> À : Sean Harmer <sean.harmer at kdab.com>; "interest at qt-project.org"
> <interest at qt-project.org>; BOUCARD Olivier <boucard_olivier at yahoo.fr>
> Envoyé le : Mardi 11 décembre 2012 5h03
> Objet : RE: [Interest] [Qt3D] Is it usable yet?
> 
> Hi,
> 
> I would like to see Text in 3D space as I had been trying hard for the last
> week to render text in 3D space using custom QQuickItem3D but somehow
> couldnot manage to render text.
> 
> Your help in this is greatly appreciated.
> 
> Best Regards,
> Ramakanth
> 
> ________________________________________
> From:
> interest-bounces+ramakanthreddy_kesireddy=mahindrasatyam.com at qt-project.org
> <mailto:mahindrasatyam.com at qt-project.org>
> [interest-bounces+ramakanthreddy_kesireddy=mahindrasatyam.com at qt-project.or
> g<mailto:mahindrasatyam.com at qt-project.org>] on behalf of Sean Harmer
> [sean.harmer at kdab.com<mailto:sean.harmer at kdab.com>] Sent: Monday, December
> 10, 2012 4:57 PM
> To: interest at qt-project.org<mailto:interest at qt-project.org>; BOUCARD Olivier
> Subject: Re: [Interest] [Qt3D] Is it usable yet?
> 
> Hi,
> 
> On Monday 10 December 2012 10:59:23 BOUCARD Olivier wrote:
> > Hello guys,
> > 
> > First, is this a good place to talk about Qt3D?
> 
> For use of it yes this is fine. For development of it development@ would be
> better.
> 
> > This weekend I was playing with Qt5 and Qt3D.
> 
> Glad to see there is interest in this module :)
> 
> > So I built Qt5 and Qt3D from Git using the official documentation.
> > And the result is that it is partially usable.
> 
> Yes that agrees with my experiences too.
> 
> > So my first question is: is Qt3D ready?
> 
> Short answer, no. As you say it is partially usable. However, there has been
> some bit-rot as other modules have developed and Qt3D has stagnated given
> the situation this year.
> 
> Longer answer is that we are discussing what we wish to do with Qt3d in the
> longer term. As a result I cannot promise that the API will not change at
> this stage.
> 
> If you have specific features you would like to see then please raise them
> in JIRA or on the mailing list.
> 
> One major idea that we have had is to provide integration between Qt5 and
> other scene graphs such as OpenSceneGraph and OGRE.
> 
> > I have two problems:
> >      * The big one is that when I try to use "Qt3D.Shapes 2.0" in my QML
> >      I've
> > 
> > got the error "module "Qt3D.Shapes" is not installed" at run time. The
> > module "Qt3D 2.0" is working.
> 
> There is a patch pending to fix this:
> 
> https://codereview.qt-project.org/#change,40458
> 
> However, some other stuff needs to go in first to allow the CI system to
> actually pass. There's a few other tidy-up's pending too. I will hopefully
> get these sorted out this week now that devdays is over.
> 
> > * The small one is that the QML editor does
> > not recognize the "import Qt3D 2.0" command (error "QML module not
> > found").
> > But the strange thing is that it recognizes the "import Qt3D.Shapes 2.0"
> > commands. Any help will be appreciated.
> 
> Not sure about this one off-hand. I'll take a look once the other patches
> are merged.
> 
> Kind regards,
> 
> Sean
> --
> Dr Sean Harmer | sean.harmer at kdab.com<mailto:sean.harmer at kdab.com> | Senior
> Software Engineer Klarälvdalens Datakonsult AB, a KDAB Group company
> Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322)
> KDAB - Qt Experts - Platform-independent software solutions
> _______________________________________________
> Interest mailing list
> Interest at qt-project.org<mailto:Interest at qt-project.org>
> http://lists.qt-project.org/mailman/listinfo/interest
> 
> ________________________________
> 
> DISCLAIMER:
> This email (including any attachments) is intended for the sole use of the
> intended recipient/s and may contain material that is CONFIDENTIAL AND
> PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or
> distribution or forwarding of any or all of the contents in this message is
> STRICTLY PROHIBITED. If you are not the intended recipient, please contact
> the sender by email and delete all copies; your cooperation in this regard
> is appreciated.
> 
> 
> 
> ________________________________
> 
> DISCLAIMER:
> This email (including any attachments) is intended for the sole use of the
> intended recipient/s and may contain material that is CONFIDENTIAL AND
> PRIVATE COMPANY INFORMATION. Any review or reliance by others or copying or
> distribution or forwarding of any or all of the contents in this message is
> STRICTLY PROHIBITED. If you are not the intended recipient, please contact
> the sender by email and delete all copies; your cooperation in this regard
> is appreciated.
--
Dr Sean Harmer | sean.harmer at kdab.com | Senior Software Engineer
Klarälvdalens Datakonsult AB, a KDAB Group company
Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322)
KDAB - Qt Experts - Platform-independent software solutions