[vtkusers] Area of Intersection between a volume and a surface

[Cory Quammen]

Hedieh,

You could try to use vtkBoxClipDataSet [1] to clip parts of your finite
plane away and then compute the area of the plane with vtkMassProperties.
vtkBoxClipDataSet produces an unstructured grid, so you'll likely need a
vtkDataSetSurfaceFilter between it and vtkMassProperties.

HTH,
Cory

[1] http://www.vtk.org/doc/nightly/html/classvtkBoxClipDataSet.html

On Tue, Jul 21, 2015 at 3:09 AM, Hedieh Ebrahimi <hemla21 at gmail.com> wrote:

> Hi Cory,
>
> Thanks for your reply. I was looking at the Python Bindings for VTK where
> I came across the following example.
>
>
> http://www.vtk.org/Wiki/VTK/Examples/Python/GeometricObjects/Display/PolygonIntersection
>
> The example above returns the intersection point of a line with a polygon
> if it exists.
>
> Im my case I need to know if a finite plane intersects with a volume (
> hexahedron) and if so I will need to calculate the intersectional area.  I
> was wondering if this is possible using VTK.
>
> I came across this example regarding Planes Intersection:
>
>
> http://www.vtk.org/Wiki/VTK/Examples/Python/GeometricObjects/Display/PlanesIntersection
>
> But still it is not what I exactly need.  Does anybody know of any classes
> that will calculate the intersectional area.
>
> Please find attached an image I am sending with this email.
>
> Thank you very much in advance for your help.
>
> Best Regards,
> Hedieh
>
>
>
> On Mon, Jul 20, 2015 at 11:24 PM, Cory Quammen <cory.quammen at kitware.com>
> wrote:
>
>> Hi Hedieh,
>>
>> I'm not clear on what you are trying to compute. Do you have an image to
>> illustrate?
>>
>> Thanks,
>> Cory
>>
>> On Mon, Jul 20, 2015 at 10:40 AM, Hedieh Ebrahimi <hemla21 at gmail.com>
>> wrote:
>>
>>> Dear all,
>>>
>>> I have a question. I am trying to calculate the intersection area
>>> between a hexahedron volume and a triangle surface.
>>>
>>> I came across the Python Bindings for VTK. I am wondering if there is
>>> any way to get the cross section between a hexahedron volume and a triangle
>>> surface.
>>>
>>> Second is there any way to calculate this cross-sectional area?
>>>
>>> I would really appreciate if you could please refer me to any classes or
>>> sample code to do this?
>>>
>>> Thank you very much in Advance for your help.
>>>
>>> Best Regards,
>>> Hedieh
>>>
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>>
>> --
>> Cory Quammen
>> R&D Engineer
>> Kitware, Inc.
>>
>
>


-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
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