 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
A glas marble with a planet earth texture.
Using photons and an area light (without photon option enabled).
Sebastian
P.S.: Related to thread 'Pure white bg WITH shadow' in p.general.
Post a reply to this message
Attachments:
Download 'glaserde_02_1024x576.jpg' (60 KB)
Preview of image 'glaserde_02_1024x576.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
That projection is cool. ;-) What is the ior of the interior?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Sebastian H." <van### [at] gmx de> wrote:
> A glas marble with a planet earth texture.
> Using photons and an area light (without photon option enabled).
The Big Blue Marble! Cleverly done, and looks cool.
The land masses have a thin dark strip around them, probably from the
selection technique you used in your graphics app to make the land mass
alpha-channel image. If you wanted to get rid of them, you could: select
all the ocean areas, "expand" them all by 1 or 2 pixels, feather them by
the same amount, then delete all the areas (back to transparent again.)
This give a much smoother transition between opague and transparent areas.
(I use Photoshop for this, but I imagine the same tools are available in
most good graphics apps.) I learned about this technique in Deke
McClellan's book, "Photohop Bible."
Ken W.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Am Sat, 23 Sep 2006 15:13:45 -0400 schrieb Halbert:
> That projection is cool. ;-) What is the ior of the interior?
Thanks, indeed the caustics are quite nice. The ior of the interior
is 1.5.
I made the scene arangement some month but I remember that
the earth/light position was chosen so that much light can
pass through the oceans and will not get cought by solid earth.
Actually it is two spheres. One for the soil and one refractive for the
water. Using just one sphere produced problems with photons and shadows
then. So I took two seperate spheres with the soil sphere beeing the
slightly larger one.
Sebastian
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> The Big Blue Marble! Cleverly done, and looks cool.
Thanks. Indeed, it was inspiered by the blue marble image that
has been removed from the NASA-Blue-Marble web-site some time ago.
> The land masses have a thin dark strip around them, probably from the
> selection technique you used in your graphics app to make the land mass
> alpha-channel image. If you wanted to get rid of them, you could: select
> all the ocean areas, "expand" them all by 1 or 2 pixels, feather them by
> the same amount, then delete all the areas (back to transparent again.)
I tried some similar techniques in the gimp but they all had the
problem that samaller islands and island groups disappeared so I
chose this 'bordered' version as a compromise.
Sebastian
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
