|
|
Spiders are always right, they are insects!
//Spider
Bob Hughes wrote:
>
> I see you're keeping the tilted lighthouse though ;)
> Spiders may be right, and maybe not. The beam crosses nearly
> perpendicular, I would suppose, to the observer due to the perspective
> camera angle. This would be seen as a much diminished beam at such a
> point. Are you using 'scattering' type 5? If not, you might want to try
> it out, and set 'eccentricity' to greater than 0.
>
> Mark Palmquist wrote:
> >
> > I was inspired by your post to start playing with media, I came up
> > with the following scene (very sparce) with what I think the beam
> > should look like.
> >
> > Would anyone like to comment on the beam effect? any ideas are
> > welcome.
> >
> > [Image]
> >
> > the source:
> >
> > //begin*******************************
> >
> > // Persistence of Vision Ray Tracer Scene Description File
> > // File: lighthouse.pov
> > // Vers: 3.1
> > // Desc: spotlight/media interaction test
> > // Date: 02/07/99
> > // Auth: Mark Palmquist
> > // uses bricks.inc by Jeff Lee
> > //
> > #include "colors.inc"
> > #include "metals.inc"
> > #include "glass.inc"
> >
> >
> > camera {location < 0, 16, -600>
> > right 4/3*x
> > up y
> > direction z
> > angle 65
> > look_at <0, 105, 0>
> > }
> >
> > light_source { <150, 500, 500>
> > color rgb 2
> > media_interaction off
> > //shadowless
> > }
> >
> > #declare Lightbulb = union {
> > merge {
> > sphere { <0,0,0>,1 }
> > cylinder { <0,0,1>, <0,0,0>, 1
> > scale <0.35, 0.35, 1.0>
> > translate 0.5*z
> > }
> > texture {
> > pigment {color rgb <1, 1, 1>}
> > finish {ambient .8 diffuse .6}
> > }
> > }
> > cylinder { <0,0,1>, <0,0,0>, 1
> > scale <0.4, 0.4, 0.5>
> > texture { T_Brass_1A }
> > translate 1.5*z
> > }
> > //rotate -90*x
> > scale 2
> > }
> > #declare beam=
> > union{
> > light_source { <0, .1, 0> color rgb<1, 1, 1>*4
> > spotlight
> > point_at <0, 10, 0>
> > radius 1
> > falloff 8
> > media_attenuation on
> > looks_like {Lightbulb}
> > }
> > cone {<0,0,0>, 0, <0,1000,0>, 360 open hollow interior {media
> > {
> > intervals 43
> > absorption .01
> > scattering {1, rgb 0.02}
> > samples 1, 10
> > confidence 0.9999
> > variance 1/1000
> > ratio 0.9
> > }
> > }
> > pigment{Clear}
> > }
> > rotate <0,0,-93>
> > }
> >
> > #declare newBrickMidtone=colour rgb <0.60,0.60,0.60>
> > #declare newBrickHighlight=colour rgb <0.75,0.70,0.70>
> > #declare newBrickLowlight=colour rgb <0.35,0.35,0.35>
> > #include "bricks.inc" //Author: Jeff Lee
> >
> > #declare lighthouse=
> > union{
> > object { beam translate <12.1,110,0>}
> > cone {<0,0,0>, 20, <0,100,0>, 15 texture { T_newBrick scale
> > <1,2,18>}}
> > merge{
> > cylinder{ 100*y, 120*y, 12 texture {T_Glass3}}
> > difference {
> > sphere { 120*y, 12}
> > box { <-15,100,-15> <-15,120,-15>}
> > texture {T_Brass_3C}
> > }
> > }
> > }
> >
> > object {lighthouse translate <-200,0,0>}
> >
> > //end*******************************
> >
> > Darcy Johnston wrote:
> >
> > > Well, some time ago, I posted an image depicting my model of the
> > > Hatteras
> > > lighthouse. Here it is again in a scene.
> > >
> > > Please let me know what you think of it.
> > > Thanks,
> > > Darcy
> > > djo### [at] inamecomNOSPAM
> > > http://www.geocities.com/SiliconValley/Sector/4317
> >
> >
>
> --
> omniVERSE: beyond the universe
> http://members.aol.com/inversez/POVring.htm
> =Bob
Post a reply to this message
|
|