[worldKit-dev] annotation precision

[wri-ano]

Hi,

I would like to submit 2 bugs, can't find my way through "trac"

1.Unprecise positionning of points
2.Moving polygons

1.
it doesn't show on large scale application like those
"advertised" in the example section, but annotations
positionning is a bit unprecise. the offset is 0.05 degrees or
so. both lat and lon.
I'm using wms on nasa'JPL as explained in the documentation.
It's like the WMS tiling is somehow shifted to the NorthEast
by that offset. it may depend on lattitude.
coordinates are verified.


2.
The polygons and lines are affected. if you try to draw 2
polygons side by side, you will still see a small gap between
them. this gap is about 0.03 degrees, but whhen you multiply
the number of polygons and/or their edges, this gap may or may
not be present, so the polygons are shifted in any direction.
for example, adding a point to a polygon can make it stick to
its neighbour at the other end of it. Quite erratic.

Sorry I cannot explain this behavior correctly. The best thing
is to check the example on front page, and zoom in on a
country border, between saudi arabia and Yemen for example.
You will see what I mean, in some places, there is a
no-man's-land, elsewhere it's overlaying. (btw, publishing the
source of this example would be great)

Once again, those problem does not show for large scale apps,
but for small scale ones, it makes worldkit unusable.

If you need any more info, just ask me. besides that, worldkit
would fit so well for my application, I would be happy to help.

it occurs with worldkit 3.3.

Thanks

jean marc