[Papervision3D] convert material coords to sphere 3d coords

[Makc]

On Tue, Dec 16, 2008 at 11:35 PM, den ivanov <cleoag at gmail.com> wrote:
> Also i need to draw 3D arcs between cityes. Maybe someone already do this
> and can share the code?

if you mean you need to draw arcs of great circles in texture
(lat/lon) coordinates, attached code may help you. if you mean to do
that in 3d, it is easier to rotate (or even interpolate + normalize)
vector between two cities and connect with 3d line.
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