Re: [Algorithms] Maximum Distance Point To AABB

[Gil G. <gg...@ma...>]

I don't see why you would need the maximum distance for a texture
synthesizer. You will always need mip levels down to 1x1, since the slope of
the polygon has an effect on the mip level used. Edge-on polygons will
always use the 1x1 mip-level.

Anyway, an overestimate of the maximum distance is just the minimum distance
plus the length of a "diagonal" of the bbox. By diagonal I mean a line
segment joining opposite corners of the bbox.
-Gil



> Hi,
>
> For my terrain engine texture synthesizer, I want to dynamically load the
> mipmap levels only when they are needed and delete them when they are not
> needed anymore.
> The terrain is subdivided into little chunks which all have their own
> texture. So I would like to find out the minimum and maximum Distance from
a
> point to the AABB enclosing the terrain chunk.
>
> The minimum distance was easy, but how do I get the maximum distance to
the
> AABB?
>
> Thanks in advance.
> bye joe
>
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