[vtkusers] RE: Quadratic triangle + linear edge - cell scalars incorrect (vtk 4.5)

[John Platt]

Hi Mathieu,

Much better with version 1.35 - I can enjoy the quadratic pyramid as
well!

Thanks for your help.

John.

-----Original Message-----
From: Mathieu Malaterre [mailto:mathieu.malaterre at kitware.com] 
Sent: 25 May 2004 13:51
To: John Platt
Subject: Re: Quadratic triangle + linear edge - cell scalars incorrect
(vtk 4.5)

John,

	Can you check your version of vtkDataSetSurfaceFilter, make sure
it is 
at least 1.35 . Sorry about the VC++6 for scope, I thought this was the 
problem...

Anyway enjoy your nice triangle now, and sorry for trouble
Mathieu

John Platt wrote:
> Hi Mathieu,
> 
> Please find attached the .vtk file. I had a quick look at it using
> ParaView 1.2.1 and it displays a red centre triangle surrounded by
blue
> triangles and a blue edge (the inverse). I'm wondering whether there
may
> have been a fix for this or it's my setup here?
> 
> Thanks for all your help.
> 
> John.
> 
> -----Original Message-----
> From: Mathieu Malaterre [mailto:mathieu.malaterre at kitware.com] 
> Sent: 24 May 2004 22:26
> To: John Platt
> Subject: Re: Quadratic triangle + linear edge - cell scalars incorrect
> (vtk 4.5)
> 
> John Platt wrote:
> 
>>Hi Mathieu,
>>
>>Hope the direct post is not too much of an intrusion but there appears
>>to be some problem with the list at the moment.
> 
> 
> Yes, Andy is having a *really* bad time trying to back up everything 
> here, sorry for trouble.
> 
> 
>>I tried your suggestion but it did not affect the output. To remove
> 
> any
> 
>>doubt on the scoping issue, I replaced 
>>
>>   topology->InsertNextId( ptId++ );
>>   topology->InsertNextId( ptId );
>>by
>>   topology->InsertNextId( 6 );
>>   topology->InsertNextId( 7 );
>>
>>but still no change.
> 
> 
> Ok I have to say: are you sure? I try both ideas and I get the correct

> result. cf picture. Could you try something like 'rebuild all', delete

> your previous exe, remove your old image ...
> 
> If I remember well you already  had some weird issue with an opengl 
> driver, but this one, I don't believe those guys would make such a
> mistake.
> 
> Could you please change your snapshot for a vtkUnstructuredGridWriter,

> and send me the vtk file ? Thanks
> 
> 
>>As for the suitability of VC++6 for real development, OK, I admit that
>>ParaView does cause it to crash if you double click
>>ParaviewComplete.dsw. Perhaps I should send the report to MS next this
>>happens? - or maybe you just need a multiprocessor machine (I did get
> 
> it
> 
>>to build) :-).
> 
> 
> Are you using cvs ParaViewComplete ? You shouldn't use
ParaViewComplete,
> 
> can you grab ParaView-1.4.zip, and let us know if you still have soime

> problem. 'Cause it shouldn't crash at all. (BTW, please wait until the

> list are back fro sending your bug report)
> 
> 
>>Many thanks for your suggestions and continued help.
> 
> 
> My pleasure,
> 
> Mathieu
> 
> 
> 
>>John.
>>
>>
>>
>>-----Original Message-----
>>From: Mathieu Malaterre [mailto:mathieu.malaterre at kitware.com] 
>>Sent: 24 May 2004 20:50
>>To: John Platt
>>Cc: vtkusers at vtk.org
>>Subject: Re: Quadratic triangle + linear edge - cell scalars incorrect
>>(vtk 4.5)
>>
>>John,
>>
>>	This is the problem with using VC++6 for real development :)
>>
>>	More seriously, VC++6 does not respect scoping for 'for', and
>>thus lead 
>>people to make errors. Could you change your code :
>>
>>    for ( int ptId = 0; ptId < 6; ptId++ )
>>
>>into
>>
>>    int ptId;
>>    for ( ptId = 0; ptId < 6; ptId++ )
>>
>>Only then you can later reuse ptId.
>>
>>HTH
>>Mathieu
>>
>>
>>John Platt wrote:
>>
>>
>>>Hi Users,
>>>
>>>
>>>
>>>When I add a linear edge to an unstructured grid consisting of a
>>
>>single 
>>
>>
>>>quadratic triangle, the centre linear triangle of the triangulated 
>>>quadratic triangle and the edge have swapped cell scalars - see 
>>>attachment (triangle should be all red & edge blue).
>>>
>>>
>>>
>>>When either of the cells is drawn in isolation there is no problem.
>>>
>>>
>>>
>>>The cell scalars coming out of 
>>>vtkDataSetSurfaceFilter::UnstructuredGridExecute() appear OK.
>>>
>>>
>>>
>>>Does anybody else have this problem? I have attached the c++ code
just
>>
>>
>>>in case it is a fault on my part.
>>>
>>>
>>>
>>>Many thanks for your help.
>>>
>>>
>>>
>>>John.
>>>
>>>
>>>
>>
>>
>
------------------------------------------------------------------------
> 
>>
>>
>>
>>
>>
>>
>