pyopengl-users

[PyOpenGL-Users] Basic query regarding glSelectBuffer

[Abhijeet R. <abh...@gm...>]

Hi,

I am not clear as to how do we use glSelectBuffer in pyopengl.

So far, I have tried to convert it to python and my attempt is as follows:
*Python code:- http://sprunge.us/JPUj?python
C++ code:- http://sprunge.us/YPhU?c++*

*Corresponding C++ code is (If you want just the part required):-*
// Space for selection buffer
static GLuint selectBuff[BUFFER_LENGTH];
//Something else
//Setup selection buffer
glSelectBuffer(BUFFER_LENGTH, selectBuff);

//Some more stuff, and its now used in the code like
hits = glRenderMode(GL_RENDER);
//Other stuff..
if(hits > 0){ //something's been selected
        unsigned int choiche;

        // fi there's more than one figure (or control point) selected, take
the top one
        if (hits > 1)
          choiche = selectBuff[(hits*4)-1];
        else
          choiche = selectBuff[3];

        cpsel = false;
        if (win == 1) {
          selWin1(selectBuff);
        }
        else if (win == 2){
             sel = true;
             if (choiche < figureSet.size()) // figure selected
                selected = choiche;
             else{ // it's a control point
                cpsel = true;
                cp = choiche;
             }
        }
     }
___________________________________________________________




A quick reply will be highly appreciated as I have a deadline to submit a
project.
-- 
Regards,
Abhijeet Rastogi (shadyabhi)
http://www.google.com/profiles/abhijeet.1989

Re: [PyOpenGL-Users] Basic query regarding glSelectBuffer

[Abhijeet R. <abh...@gm...>]

Also, I have noticed that in python, *glSelectBuffer (size) → None *is the
specification. So, how am I supposed to use selectBuff. Because in C++, we
also pass selectBuff's reference to the function.

On Mon, Apr 18, 2011 at 5:33 PM, Abhijeet Rastogi
<abh...@gm...>wrote:

> Hi,
>
> I am not clear as to how do we use glSelectBuffer in pyopengl.
>
> So far, I have tried to convert it to python and my attempt is as follows:
> *Python code:- http://sprunge.us/JPUj?python
> C++ code:- http://sprunge.us/YPhU?c++*
>  **
>



-- 
Regards,
Abhijeet Rastogi (shadyabhi)
http://www.google.com/profiles/abhijeet.1989

Re: [PyOpenGL-Users] Basic query regarding glSelectBuffer

[Joshua R. D. <joshuardavis@q.com>]

You just pass in the buffer size. This is in the code I pointed you to.

selectionBufferCapacity = 64
glSelectBuffer(selectionBufferCapacity)

Josh

On 2011 Apr 18, at 7:06 AM, Abhijeet Rastogi wrote:

> Also, I have noticed that in python, glSelectBuffer (size) → None is the specification. So, how am I supposed to use selectBuff. Because in C++, we also pass selectBuff's reference to the function.
> 
> On Mon, Apr 18, 2011 at 5:33 PM, Abhijeet Rastogi <abh...@gm...> wrote:
> Hi,
> 
> I am not clear as to how do we use glSelectBuffer in pyopengl.
> 
> So far, I have tried to convert it to python and my attempt is as follows:
> Python code:- http://sprunge.us/JPUj?python
> C++ code:- http://sprunge.us/YPhU?c++
>  
> 
> 
> 
> -- 
> Regards,
> Abhijeet Rastogi (shadyabhi)
> http://www.google.com/profiles/abhijeet.1989
> ------------------------------------------------------------------------------
> Benefiting from Server Virtualization: Beyond Initial Workload 
> Consolidation -- Increasing the use of server virtualization is a top
> priority.Virtualization can reduce costs, simplify management, and improve 
> application availability and disaster protection. Learn more about boosting 
> the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev_______________________________________________
> PyOpenGL Homepage
> http://pyopengl.sourceforge.net
> _______________________________________________
> PyOpenGL-Users mailing list
> PyO...@li...
> https://lists.sourceforge.net/lists/listinfo/pyopengl-users

Joshua R. Davis    joshuardavis@q.com

Re: [PyOpenGL-Users] Basic query regarding glSelectBuffer

[Abhijeet R. <abh...@gm...>]

Thanks Davis for your reply.
But, then in C++ code, I have used it too... ( like in choiche =
selectBuff[(hits*4)-1];)... So, what will I do in python code?

On Mon, Apr 18, 2011 at 5:46 PM, Joshua R. Davis <joshuardavis@q.com> wrote:

> You just pass in the buffer size. This is in the code I pointed you to.
>
> selectionBufferCapacity = 64
> glSelectBuffer(selectionBufferCapacity)
>
> Josh
>
> On 2011 Apr 18, at 7:06 AM, Abhijeet Rastogi wrote:
>
> > Also, I have noticed that in python, glSelectBuffer (size) → None is the
> specification. So, how am I supposed to use selectBuff. Because in C++, we
> also pass selectBuff's reference to the function.
> >
> > On Mon, Apr 18, 2011 at 5:33 PM, Abhijeet Rastogi <
> abh...@gm...> wrote:
> > Hi,
> >
> > I am not clear as to how do we use glSelectBuffer in pyopengl.
> >
> > So far, I have tried to convert it to python and my attempt is as
> follows:
> > Python code:- http://sprunge.us/JPUj?python
> > C++ code:- http://sprunge.us/YPhU?c++
> >
> >
> >
> >
> > --
> > Regards,
> > Abhijeet Rastogi (shadyabhi)
> > http://www.google.com/profiles/abhijeet.1989
> >
> ------------------------------------------------------------------------------
> > Benefiting from Server Virtualization: Beyond Initial Workload
> > Consolidation -- Increasing the use of server virtualization is a top
> > priority.Virtualization can reduce costs, simplify management, and
> improve
> > application availability and disaster protection. Learn more about
> boosting
> > the value of server virtualization.
> http://p.sf.net/sfu/vmware-sfdev2dev_______________________________________________
> > PyOpenGL Homepage
> > http://pyopengl.sourceforge.net
> > _______________________________________________
> > PyOpenGL-Users mailing list
> > PyO...@li...
> > https://lists.sourceforge.net/lists/listinfo/pyopengl-users
>
> Joshua R. Davis    joshuardavis@q.com
>
>
>
>


-- 
Regards,
Abhijeet Rastogi (shadyabhi)
http://www.google.com/profiles/abhijeet.1989

Re: [PyOpenGL-Users] Basic query regarding glSelectBuffer

[Mike C. F. <mcf...@vr...>]

On 11-04-18 08:39 AM, Abhijeet Rastogi wrote:
> Thanks Davis for your reply.
> But, then in C++ code, I have used it too... ( like in choiche =
> selectBuff[(hits*4)-1];)... So, what will I do in python code?

See the PyOpenGL documentation for glSelectBuffer, in the section Sample
Code References you'll find a few links to sample code, including from
OpenGLContext.  Basically you get back a list from the glRenderMode()
call and you can iterate over the (near,far,names) records in that list:

   
http://pyopengl.sourceforge.net/documentation/manual-3.0/glSelectBuffer.xhtml

HTH,
Mike

>
> On Mon, Apr 18, 2011 at 5:46 PM, Joshua R. Davis <joshuardavis@q.com
> <mailto:joshuardavis@q.com>> wrote:
>
>     You just pass in the buffer size. This is in the code I pointed
>     you to.
>
>     selectionBufferCapacity = 64
>     glSelectBuffer(selectionBufferCapacity)
>
>     Josh
>
>     On 2011 Apr 18, at 7:06 AM, Abhijeet Rastogi wrote:
>
>     > Also, I have noticed that in python, glSelectBuffer (size) →
>     None is the specification. So, how am I supposed to use
>     selectBuff. Because in C++, we also pass selectBuff's reference to
>     the function.
>     >
>     > On Mon, Apr 18, 2011 at 5:33 PM, Abhijeet Rastogi
>     <abh...@gm... <mailto:abh...@gm...>> wrote:
>     > Hi,
>     >
>     > I am not clear as to how do we use glSelectBuffer in pyopengl.
>     >
>     > So far, I have tried to convert it to python and my attempt is
>     as follows:
>     > Python code:- http://sprunge.us/JPUj?python
>     > C++ code:- http://sprunge.us/YPhU?c++
>     >
>     >
>     >
>     >
>     > --
>     > Regards,
>     > Abhijeet Rastogi (shadyabhi)
>     > http://www.google.com/profiles/abhijeet.1989
>     >
>     ------------------------------------------------------------------------------
>     > Benefiting from Server Virtualization: Beyond Initial Workload
>     > Consolidation -- Increasing the use of server virtualization is
>     a top
>     > priority.Virtualization can reduce costs, simplify management,
>     and improve
>     > application availability and disaster protection. Learn more
>     about boosting
>     > the value of server virtualization.
>     http://p.sf.net/sfu/vmware-sfdev2dev_______________________________________________
>     > PyOpenGL Homepage
>     > http://pyopengl.sourceforge.net
>     > _______________________________________________
>     > PyOpenGL-Users mailing list
>     > PyO...@li...
>     <mailto:PyO...@li...>
>     > https://lists.sourceforge.net/lists/listinfo/pyopengl-users
>
>     Joshua R. Davis    joshuardavis@q.com <mailto:joshuardavis@q.com>
>
>
>
>
>
>
> -- 
> Regards,
> Abhijeet Rastogi (shadyabhi)
> http://www.google.com/profiles/abhijeet.1989
>
>
> ------------------------------------------------------------------------------
> Benefiting from Server Virtualization: Beyond Initial Workload 
> Consolidation -- Increasing the use of server virtualization is a top
> priority.Virtualization can reduce costs, simplify management, and improve 
> application availability and disaster protection. Learn more about boosting 
> the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
>
>
> _______________________________________________
> PyOpenGL Homepage
> http://pyopengl.sourceforge.net
> _______________________________________________
> PyOpenGL-Users mailing list
> PyO...@li...
> https://lists.sourceforge.net/lists/listinfo/pyopengl-users


-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com