[vtkusers] Polygon Intersection with vtkPolyData

[Meisam Aliroteh]

Go to http://staff.science.uva.nl/~dshamoni/ and visit "My Projects >
Boolean". You can download its code from "Download > Boolean".

On 4/23/07, ѧ־ Ñî <shulo1978 at hotmail.com> wrote:
>
> Hi everyone, I am quite new to VTK. I am trying to do polygon intersection
> detection and extract the area which overlaps and reconstruct the
> overlapping part into a new polygon. The information of polygons is stored
> in vtkPolyData, I have written an algorithm to detect intersection and
> reconstruct new polygon. However, it doesn't work. Since I am quite new to
> vtk, I might make some mistakes. The question is as polygon infomation is
> stored in vtkPolyData, do I need to use vtkCutter to cut through with a
> vtkPlane to get 2D data? I didn't do this and straightaway extract the
> point(vtkPoints) in vtkPolyData and compare them. If I did this, can I
> still
> store the data in vtkPolyData just as the point z value is zero? I dun
> know
> whether I confuse you guys, if I didn't make myself clear, please let me
> know. Please do help me and I really appreciate. The main problem I have
> really is lack of information of VTK. The documentation is a bit hard for
> me
> to understand sometimes and not sufficient information : (... Thanks for
> everyone
>
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