I have similar problem, drawing a circle around a DOT3 textured
sphere, just a couple of pixels larger, the 'back' of the ring is not
hidden by the renderer. I also have tried various options, and none
seemed to help.

Mark

On Nov 17, 10:45 pm, Ralph B <[email protected]> wrote:
> I am updating a tutorial on latitude and longitude.  It has a sphere
> representing the earth with lines of latitude around it.  In Away3D
> 3.4.2 the lines would render correctly over the sphere if their radius
> was 1.03X the sphere radius.  But in 3.6, they need to be much further
> away: much further even than the size of the triangles; about an
> entire sphere radius away.  And the numbers of segments in the lines
> and sphere do not have any effect.
>
> Therefore it seems that the BASIC renderer in 3.6 is doing a worse job
> with Z-sorting than in 3.4.2.  In fact it seems like the Z-sorting
> algorithm is comparing the line segment in the ring with the entire
> Sphere primitive, not the triangles on the Sphere surface.
>
> Could that be true?
>
> I tried using CORRECT_Z_ORDER but it is painfully slow.  I see the
> same effect wrapping rings around a Cube, and if I make the ring with
> WireCircle or my own array of LineSegments.
>
> Forcing the z-sorting using pushfront, pushback etc. is not an easy
> solution because the latitude rings must be seen to wrap around the
> earth.
>
> Any suggestions?  Thanks!

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