[vtkusers] Comput the area contained by a contour (VTK C++)

[Rodrigo Lovera]

Hi Bouba,

I was checking on the method you propose, but I don't get to set the input
correctly for the triangle filter, considering i'm defining the 2D contour
using the vtkContourWidget, so there is where im stucked atm.

Checking vtkMassProperties I think surfacearea 'd suit well for computing
area contained by the contour, hope you could give me an idea on how to
connect the pipe between the contour widget and the triangle filter so I
could test the rest.

Thx in advance,

Regards,
Rodrigo


2012/11/29 Belaroussi, Boubakeur <Boubakeur.Belaroussi at bioclinica.com>

>   Hi Rodrigo,****
>
> ** **
>
> For 2D contours, you can use the following pipeline:****
>
> ** **
>
> 1. Transform your contour points into triangles, using vtkTriangleFilter,
> which creates triangle polygons from input polygons and triangle strips***
> *
>
> 2. Then, to get the area of your contour, among other features, you can
> use the vtkMassProperties filter, which estimates volume, area, shape index
> of triangle mesh.****
>
> ** **
>
> Hope it helps****
>
> Regards,****
>
> Bouba****
>
> ** **
>
> *From:* vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] *On
> Behalf Of *Rodrigo Lovera
> *Sent:* jeudi 29 novembre 2012 18:01
> *To:* VTK Users
> *Subject:* [vtkusers] Comput the area contained by a contour (VTK C++)****
>
> ** **
>
> Hello everyone,
>
> I was wondering if any of you know a method to compute the area cointained
> by a figure or maybe something like the contourwidget which shape can be
> changed at will.
>
> What I need -d be some kind of implementation or code or guide on how to
> perform that math operation, similar to the distance widget but what I need
> to compute now is area.
>
> Id really appreciate any kind of help
>
> --
> *Rodrigo*****
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>



-- 
*Rodrigo aka WarHearT*
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