[Paraview] Delaunay 3D filter too slow

[庞庆源]

My points are not Uniform distribution.They take from intersections of 89
wefts and 180 warps.So the points are intensive at poles and sparse at
equator.Is this the problem?


2013/9/25 Moreland, Kenneth <kmorel at sandia.gov>

>   That is strange. I cannot replicate your problem. I used a point source
> to create 16020 random points in a sphere, and the Delaunay triangulation
> took only about 2 seconds. My processor might be a bit better than yours,
> but not anywhere near enough to explain the difference.
>
>  What version of ParaView are you using? Are you a binary downloaded from
> paraview.org or did you build your own?
>
>  -Ken
>
>   From: 庞庆源 <pangqingyuan1991 at gmail.com>
> Date: Tuesday, September 24, 2013 10:29 PM
> To: Kenneth Moreland <kmorel at sandia.gov>
> Subject: [EXTERNAL] Re: [Paraview] Delaunay 3D filter too slow
>
>   in fact,I have only 16020 points for test.My cpu is AMD Athlon(tm) II
> P320 Dual-Core Processor with 2.1GHz.How long will it take in this case if
> I use one cpu to calculate?I have wait for more than 10 minutes before
> stopping it.
>
>
> 2013/9/24 Moreland, Kenneth <kmorel at sandia.gov>
>
>>   Your options are probably either to wait or do something else.
>> Delaunay triangulation is a pretty heavyweight operation and in general it
>> is not trivial to impose a topology on a collection of points.
>>
>>  You might rethink whether you really need to create a solid sphere in
>> the first place. I'm guessing you have at least around 100,000 points (or
>> else Delaunay probably would not be that slow). If you just render these
>> points as a cloud of points, you should get enough occlusion for it to look
>> pretty much like a sphere.
>>
>>  -Ken
>>
>>   From: 庞庆源 <pangqingyuan1991 at gmail.com>
>> Date: Tuesday, September 24, 2013 5:01 AM
>> To: paraview <paraview at paraview.org>
>> Subject: [EXTERNAL] [Paraview] Delaunay 3D filter too slow
>>
>>   I have a lot of points taking sample from a solid sphere.So I want to
>> use Delaunay 3D filter to render the shpere with known scalars of the
>> points.But it took me so much time.What should I do?
>>
>>  --
>> 庞庆源 <pangqingyuan1991 at gmail.com>
>>
>
>
>
>  --
> 庞庆源 <pangqingyuan1991 at gmail.com>
>



-- 
庞庆源 <pangqingyuan1991 at gmail.com>
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