[vtkusers] About relationship between a point and a cube

[David Doria]

2012/4/19 Rong Xu <xurong1981 at gmail.com>

> Dear all:
>
> I am doing work on a judgement about relationship between a point and an
> arbitrary cube. I have known the 8 coordinates of  the cube vertex and have
> draw it out, and also I have known the coordinate of one point. Then I want
> to judge whether this point is inside the cube or outside the cube.
>
> One of my idea is first I rotate the arbitrary cube to make its three
> edges coincide with three axises (x, y, and z), and make one of its
> vertices on the origin of the coordinate system. But I don't know whether
> there are methods in VTK that can be used to realize this purpose ? Or does
> anyone have any other ideas on judging the relationship between the point
> and the cube ?
>
> Thank you very much for your ideas !
>
>
I'm not sure I followed completely, but it sounds like you might be looking
for a "point inside object" test?

http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/PointInsideObject

David
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