[vtkusers] vtkPolygon::PointInPolygon 's parameters

[rashedk]

Hi, 

I am still having problems making the vtkPolygon::PointInPolygon work. Can
someone clarify the third parameter *pts for me? 

Are these the vertices of the polygon as x1, y1, z1, x2, y2, z2, and so on
... where (x1,y1,z1) is a vertex? 

Has anyone had issues with this function? It seems to return 0 for some
points which are inside the polygon. 

Thanks in advance 
Rashed



Goodwin Lawlor wrote:
> 
> Hi Rashed,
> 
> The bounds are indeed the "min-max of each x,y,z component". If you got 
> the polydata of the plane from your widget, you can try:
> 
> planeWidget->GetPolyData()->GetPoints()->GetBounds()
> 
> hth
> 
> Goodwin
> 
> 
> rashedk wrote:
>> Hi everyone, 
>> 
>> I cant find any reference in the documentation about the parameters of
>> the
>> static function vtkPolygon::PointInPolygon
>> 
>> Here is the signature: 
>> int 	PointInPolygon (float x[3], int numPts, float *pts, float bounds[6],
>> float n[3])
>> 
>> Especially with regards to the 4th parameter bounds[6]. If I have four
>> corner points of a polygon (i.e. plane) for example, how do I compute
>> bounds? Are these the min-max of each x,y,z component for the four corner
>> points? 
>> 
>> Thanks, 
>> Rashed
> 
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