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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.
<P>Would anyone like to comment on the beam effect? any ideas are
welcome.
<P><IMG SRC="cid:par### [at] earthlink net" HEIGHT=480 WIDTH=640>
<P>the source:
<P>//begin*******************************
<P>// Persistence of Vision Ray Tracer Scene Description File
<BR>// File: lighthouse.pov
<BR>// Vers: 3.1
<BR>// Desc: spotlight/media interaction test
<BR>// Date: 02/07/99
<BR>// Auth: Mark Palmquist
<BR>// uses bricks.inc by Jeff Lee
<BR>//
<BR>#include "colors.inc"
<BR>#include "metals.inc"
<BR>#include "glass.inc"
<BR>
<P>camera {location < 0, 16, -600>
<BR> right 4/3*x
<BR> up y
<BR> direction z
<BR> angle 65
<BR> look_at <0, 105, 0>
<BR>}
<P>light_source { <150, 500, 500>
<BR> color rgb 2
<BR> media_interaction off
<BR> //shadowless
<BR>}
<P>#declare Lightbulb = union {
<BR> merge {
<BR> sphere { <0,0,0>,1 }
<BR> cylinder { <0,0,1>, <0,0,0>, 1
<BR> scale <0.35, 0.35, 1.0>
<BR> translate 0.5*z
<BR> }
<BR> texture {
<BR> pigment {color rgb <1,
1, 1>}
<BR> finish {ambient .8 diffuse
.6}
<BR> }
<BR> }
<BR> cylinder { <0,0,1>, <0,0,0>, 1
<BR> scale <0.4, 0.4, 0.5>
<BR> texture { T_Brass_1A }
<BR> translate 1.5*z
<BR> }
<BR> //rotate -90*x
<BR> scale 2
<BR>}
<BR>#declare beam=
<BR>union{
<BR> light_source { <0, .1, 0> color rgb<1, 1, 1>*4
<BR> spotlight
<BR> point_at <0, 10, 0>
<BR> radius 1
<BR> falloff 8
<BR> media_attenuation on
<BR> looks_like {Lightbulb}
<BR> }
<BR> cone {<0,0,0>, 0, <0,1000,0>, 360 open hollow interior
{media
<BR> {
<BR> intervals 43
<BR> absorption .01
<BR> scattering {1, rgb 0.02}
<BR> samples 1, 10
<BR> confidence 0.9999
<BR> variance 1/1000
<BR> ratio 0.9
<BR> }
<BR> }
<BR> pigment{Clear}
<BR> }
<BR> rotate <0,0,-93>
<BR>}
<P>#declare newBrickMidtone=colour rgb <0.60,0.60,0.60>
<BR>#declare newBrickHighlight=colour rgb <0.75,0.70,0.70>
<BR>#declare newBrickLowlight=colour rgb <0.35,0.35,0.35>
<BR>#include "bricks.inc" //Author: Jeff Lee
<BR>
<BR>#declare lighthouse=
<BR>union{
<BR> object { beam translate <12.1,110,0>}
<BR> cone {<0,0,0>, 20, <0,100,0>, 15 texture { T_newBrick
scale <1,2,18>}}
<BR> merge{
<BR> cylinder{ 100*y, 120*y, 12 texture
{T_Glass3}}
<BR> difference {
<BR> sphere { 120*y, 12}
<BR> box { <-15,100,-15> <-15,120,-15>}
<BR> texture {T_Brass_3C}
<BR> }
<BR> }
<BR>}
<P>object {lighthouse translate <-200,0,0>}
<P>//end*******************************
<P>Darcy Johnston wrote:
<BLOCKQUOTE TYPE=CITE>Well, some time ago, I posted an image depicting
my model of the Hatteras
<BR>lighthouse. Here it is again in a scene.
<P>Please let me know what you think of it.
<BR>Thanks,
<BR>Darcy
<BR>djo### [at] inamecomNOSPAM
<BR><A
HREF="http://www.geocities.com/SiliconValley/Sector/4317">http://www.geocities.com/SiliconValley/Sector/4317</A></BLOCKQUOTE>
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