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- //
- // Persistence Of Vision raytracer version 3.0 sample scene by Dieter Bayer.
- //
- // This scene shows the effect of solid vs. hollow objects.
- //
- // Both spheres in this scene are enclosed by a halo container object.
- //
- // The left sphere is solid, i.e. it's not filled with the halo.
- // The right sphere is hollow, i.e. it's filled with the halo.
- //
- // Note that you can see some discontinuities in the halo of the
- // right sphere. This is caused be the refraction. After the rays
- // are bent they travel through the halo on a different path
- // resulting in a different result than that for an unbend ray,
- // which would show no discontinuities.
- //
-
- #global_settings { assumed_gamma 2.2 }
-
- #include "colors.inc"
-
- camera {
- location <0, 20, -100>
- direction <0, 0, 1>
- up <0, 1, 0>
- right <4/3, 0, 0>
- }
-
- //
- // Put down the beloved famous raytrace blue/green checkered floor
- //
-
- plane { y, -10
- pigment {
- checker colour Blue colour Green
- scale 20
- }
- finish {
- ambient 0.2
- diffuse 0.8
- }
- hollow
- }
-
- //
- // Use beloved famous raytrace blue/green checkered wall
- //
-
- plane { z, 50
- pigment {
- checker colour Blue colour Green
- scale 20
- }
- finish {
- ambient 0.2
- diffuse 0.8
- }
- hollow
- }
-
- //
- // Declare halo.
- //
-
- #declare Halo = texture {
- pigment { colour Clear }
- halo {
- emitting
- spherical_mapping
- linear
- turbulence 0.1
- colour_map {
- [ 0 color rgbt <1, 0, 0, 1> ]
- [ 1 color rgbt <1, 1, 0, -10> ]
- }
- samples 5
- }
- }
-
- //
- // Solid, translucent sphere enclosed by halo.
- //
-
- sphere { <-29, 20, 0>, 25
- pigment { rgbt<1, 1, 1, 0.9> }
- finish {
- ambient 0.0
- diffuse 0.0
- phong 1.0
- phong_size 200
- refraction 1
- ior 1.1
- }
- hollow no
- }
-
- sphere { 0, 1 texture { Halo } scale 28 translate <-29, 20, 0> hollow }
-
- //
- // Hollow, translucent sphere enclosed by halo.
- //
-
- sphere { <29, 20, 0>, 25
- pigment { rgbt<1, 1, 1, 0.9> }
- finish {
- ambient 0.0
- diffuse 0.0
- phong 1.0
- phong_size 200
- refraction 1
- ior 1.1
- }
- hollow yes
- }
-
- sphere { 0, 1 texture { Halo } scale 28 translate <29, 20, 0> hollow }
-
- //
- // Cast some light.
- //
-
- light_source {
- <500, 600, -200>
- colour White
- }
-
-