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Bob Hughes wrote:
> Have you seen that new space age material (I know no name)? This image
> reminded me of it. The stuff is almost as light as air (no quotes) and
> has a smokey appearance. What I saw of it was in cubes like the media
> boxes here.
Its called Areogell (no sure about the spelling). It is the lightest solid yet known
to man. It has some pretty amazing uses
including superior insulation and is being used in a space mission to capture pieces
of a comet.
>
> Nifty image by itself, btw.
>
> Peter Popov wrote:
> >
> > (Sorry I had accidentally posted this in p.b.utilities... canceled it)
> >
> > This is what a voxel would look like on a 3D Hi-Black Trinitron :)
> >
> > Source is attached, media02.pov. Also attached is a tweaked version of
> > it (media_photons.pov) designed to make use of photon mapping... but
> > it doesn't. Can anybody help me? As the light sources are quite
> > distant their rays are practically parallel, so I am expecting this
> > normal pattern to produce some focused caustics in the scattering
> > media... but it doesn't. Why?
> >
> > Any help appreciated.
> >
> > ---------
> > Peter Popov
> > ICQ: 15002700
> >
> > [Image]
> >
> > #include "colors.inc"
> >
> > global_settings
> > {
> > photons
> > {
> > gather 20, 100
> > radius 0.5, 3, 0.5
> > }
> >
> > max_trace_level 25
> > }
> >
> > sphere
> > {
> > 0, 0.75
> > texture
> > {
> > pigment { Gray90 }
> > finish { ambient 0.1 diffuse 0.9 brilliance 1.5 reflection 0.5 specular 0.5
roughness 0.005 phong 0.25 phong_size 8 }
> > normal { leopard sine_wave frequency 0.25 phase 0.5 scale 0.05 }
> > }
> > no_shadow
> > photons
> > {
> > reflection on
> > density 0.02
> > }
> > }
> >
> > union
> > {
> > box { 0, .99 }
> > box { <-0.99,0,-0.99>, <0,0.99,0> }
> > box { <0,-0.99,-.99>, <0.99,0,0> }
> > interior
> > {
> > media
> > {
> > absorption 1
> > intervals 10
> > samples 1, 10
> > variance 1/255
> > confidence 0.999
> > scattering { 1, 2 extinction 0}
> > }
> > }
> > hollow
> > pigment { Clear }
> > photons { photons_pass_through }
> > }
> >
> > camera
> > {
> > location <1.0 , 2.0 ,-3.0>*.85
> > right x
> > look_at <-.15 , -.3 , 0.0>
> > }
> >
> > light_source
> > {
> > <10,10,10> color Red
> > spotlight
> > point_at 0
> > radius 2
> > falloff 5
> > photons { reflection on }
> > }
> >
> > light_source
> > {
> > <-10,10,-10> color Blue
> > spotlight
> > point_at 0
> > radius 2
> > falloff 5
> > photons { reflection on }
> > }
> >
> > light_source
> > {
> > <10,-10,-10> color Green
> > spotlight
> > point_at 0
> > radius 2
> > falloff 5
> > photons { reflection on }
> > }
> >
> > #include "colors.inc"
> >
> > sphere
> > {
> > 0, 0.75
> > texture
> > {
> > pigment { Gray90 }
> > finish { ambient 0.1 diffuse 0.9 brilliance 1.5 reflection 0.5 specular 0.5
roughness 0.005 phong 0.25 phong_size 8 }
> > normal { quilted 0.3 scale 0.2 }
> > }
> > no_shadow
> > }
> >
> > union
> > {
> > box { 0, .99 }
> > box { <-0.99,0,-0.99>, <0,0.99,0> }
> > box { <0,-0.99,-.99>, <0.99,0,0> }
> > interior
> > {
> > media
> > {
> > emission 1
> > absorption 1
> > intervals 30
> > samples 1, 10
> > variance 1/255
> > confidence 0.999
> > scattering { 1, 2 extinction 1}
> > }
> > }
> >
> > hollow
> > pigment { Clear }
> > }
> >
> > camera
> > {
> > location <1.0 , 2.0 ,-3.0>*.85
> > right x
> > look_at <-.15 , -.3 , 0.0>
> > }
> >
> > light_source
> > {
> > <10,10,10> color Red
> > spotlight
> > point_at 0
> > radius 2
> > falloff 5
> > photons { reflection on }
> > }
> >
> > light_source
> > {
> > <-10,10,-10> color Blue
> > spotlight
> > point_at 0
> > radius 2
> > falloff 5
> > photons { reflection on }
> > }
> >
> > light_source
> > {
> > <10,-10,-10> color Green
> > spotlight
> > point_at 0
> > radius 2
> > falloff 5
> > photons { reflection on }
> > }
>
> --
> omniVERSE: beyond the universe
> http://members.aol.com/inversez/homepage.htm
> mailto:inv### [at] aol com?Subject=PoV-News
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