Hello Christian,
On 2014-07-16 15:06, Christian Bar wrote:
> Hello! I am experiencing a problem with the QuadTreeTerrain rendering.
> With the test project everything works, but when I tried to implement it
> inside my project the terrain shows just some little parts of it (also
> with wrong triangles, this one seems like an indexing problem).
> After lot of trials, it seems to me that the quadtree algorithm does not
> work properly when the terrain is not in the origin of the world
> coordinates.
hmm, possible, it may never have been located anywhere but at the origin.
[snip]
> I also tried to use the 'terrain->setEyePoint()' and
> 'terrain->setEyePointValid()', but it works (again) only if the terrain
> is in the origin.
In which coordinate system did you specify the eye point? For example
was the eye point you set in the terrain's local coordinate system or in
world coordinates?
> What can I do to solve my problem? Thank you!
My guess would be that the camera position (either the one derived from
the active camera or the one set explicitly) are not transformed to
local coordinates. I don't have the code in front of me right now (can
take a look tomorrow), but my hope would be that the eye position is
calculate only in one (or very few) places and only needs to be
multiplied with the inverse transform of the current node.
Cheers,
Carsten
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