[vtkusers] vtk surface render so slow

[Bill Lorensen]

The default locator should be fine.

Do you compile your program Release? If you compile Debug, you may see
performance drop.

On Wed, Oct 27, 2010 at 3:50 AM,  <ruan_cpp at sohu.com> wrote:
> I'm sorry, I don't know how to send images to this mail list. .But I found
> that vtkMarchingCubes and use ComputeNormalsOn ,the image quality is quite
> good, there is no need to use vtkPolyDataNormals to compute normal .maybe
> the vtkSmoothPolyDataFilter can make image more good, but it takes too much
> .So do you have any ideas about
> thevtkMarchingCubes::SetLocator(vtkPointLocator *locator) , I'm curious
> about this, can it accelerate MarchingCubes.
>
> ----- 原文 -----
> 发件人: Bill Lorensen
> 主　题: Re: [vtkusers] vtk surface render so slow
> 时　间: 2010年10月27日 09:06:34
> 抄　送: vtkusers,
>
> The quality of the image should be better with just MarchingCubes
> (without DecimatePro and SmoothPolyData). Can you post an image of the
> poor quality result?
>
> On Tue, Oct 26, 2010 at 8:33 PM, <ruan_cpp at sohu.com> wrote:
>
>> Hi all,
>> I nead to  accelerate surface render
>> Now I use vtkImageReder--> vtkMarchingCubes --> vtkDecimatePro -->
>> vtkSmoothPolyDataFilter  to render
>> isosurface from some CT dataset. But it's too slow. If I only use
>> vtkImageReder--> vtkMarchingCubes , it's fast,
>> but the quality of image is not so good. vtkDecimatePro  and
>> vtkSmoothPolyDataFilter fliters takes too much time,
>> does anyone can help me to accelerate rendering while not lose image
>> quality.
>> Another question, what does  vtkMarchingCubes::SetLocator(vtkPointLocator
>> *locator)  do,
>> does it accelerate marchingCubes ???
>> I'm foreigner, maybe not describe the detail problem.
>>
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>