> Hi(gh)!
>
> As I mentioned in my posting before, with my Earth model I now use a
> separate sphere for the cloud-only texture. The original cloud-only
> testure bitmap was black to white; to get the cloud-free portions
> transparent, I used the GIMP's Layer/Transparency/Colour to Transparency
> feature.
>
> But obviously, the eastern hemisphere of that bitmap seems to be
> somewhat lighter than the western one; however, when I render a view of
> the North Pole (see below), the clouds-only texture covering the eastern
> hemisphere is not entirely transparent even in its cloud-free parts.
> And, very strangely, this effect does not disappear when I darken the
> eastern portion of the original map!
>
> Here is the code:
>
> union
> {
> sphere // Earth, surface
> {
> 0, 1
> texture
> {
> pigment
> {
> image_map
> {
> png "solarsys/ev5826_land_ocean_ice_lights_8192.png"
> map_type 1
> interpolate 2
> }
> }
> finish
> {
> ambient 1
> diffuse 0
> }
> }
> texture
> {
> pigment
> {
> image_map
> {
> png "solarsys/ev11612_land_ocean_ice_8192_POV.png"
> map_type 1
> interpolate 2
> }
> }
> finish { F_Standard_Planetary_Surface }
> }
> }
> sphere // Earth, clouds
> {
> 0, 1.000783928 // clouds 5 kms above surface
> texture
> {
> pigment
> {
> image_map
> {
> png "solarsys/cloud_combined_8192a_alpha.png"
> map_type 1
> interpolate 2
> }
> }
> finish { F_Standard_Planetary_Surface }
> }
> }
> rotate -y*clock
> SetAxis(bodies[3][10], bodies[3][11])
> scale <bodies[3][1], bodies[3][2], bodies[3][3]>/sc
> translate Pos_Earth/sc
> }
>
>
> What went wrong?
>
> See you in Khyberspace!
>
> Yadgar

Hi, that looks really good, where did you get the high res image maps from??

Cheers Dre

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