# mental ray scene file from "Writing mental ray shaders"
# http://www.writingshaders.com/scene_catalog.html

verbose on

link "lambert.so"
$include "lambert.mi"
link "texture_uv.so"
$include "texture_uv.mi"
link "parameter_volume.so"
$include "parameter_volume.mi"
link "voxel_density.so"
$include "voxel_density.mi"
link "point_light_shadow.so"
$include "point_light_shadow.mi"

options "opt"
    object space
    contrast .1 .1 .1 1
    samples 0 2
    volume on
    trace on
    shadow segments
    autovolume on
end options

camera "cam"
    output "rgba" "tif"
        "volume_6.tif"
    focal 1.5
    aperture 1
    aspect 1
    resolution 300 300
end camera

instance "camera-instance" "cam"
    transform 
        1.0 0.0 0.0 0.0 
        0.0 1.0 0.0 0.0 
        0.0 0.0 1.0 0.0 
        0.0 0.0 -4.0 1.0 
end instance

 

light "light1"
    "point_light_shadow" (
        "light_color" .7 .7 .3 1
    )
    origin 1 5 0
end light

instance "light1-i" "light1" end instance

light "light2"
    "point_light_shadow" (
        "light_color" .3 .3 .7 1
    )
    origin -1 5 0
end light

instance "light2-i" "light2" end instance

shader "spheres"
    "voxel_density" ( 
	"filename" "three_over_one.vol"
    )

material "sphere_volume"
    volume "parameter_volume" (
	"density_shader" "spheres",
	"unit_density" 1,
        "march_increment" .01,
	"lights" ["light1-i", "light2-i"]
    )
end material

color texture "diamond" "diamond.tif"

shader "grid"
    "texture_uv" (
        "tex" "diamond",
        "u_scale" 20,
	"v_scale" 20
    )

material "gray"
    "lambert" (
	"lights" ["light1-i", "light2-i"],
        "diffuse" = "grid"
    )
end material

instance "cube-1"
    geometry "bw_cube" ("name" "cube")
    material "sphere_volume"
    transform 
        0.50 0.0 0.0 0.0 
        0.0 0.50 0.0 0.0 
        0.0 0.0 0.50 0.0 
        0.0 -0.20 0.0 1.0 
    tag 1
    globillum on
    globillum 3
end instance

instance "cube-2"
    geometry "bw_cube" ("name" "cube")
    material "gray"
    transform 
        0.10 0.0 0.0 0.0 
        0.0 100.0 0.0 0.0 
        0.0 0.0 0.10 0.0 
        0.0 100.0 0.010 1.0 
    tag 2
    globillum on
    globillum 3
end instance

instance "cube-3"
    geometry "bw_cube" ("name" "cube")
    material "gray"
    transform 
        0.10 0.0 0.0 0.0 
        0.0 -0.000004 -0.10 0.0 
        0.0 100.0 -0.0 0.0 
        0.0 110.0 -0.0 1.0 
    tag 3
    globillum on
    globillum 3
end instance

instgroup "root"
    "camera-instance"
    "light1-i" "light2-i"    "cube-1" "cube-2" "cube-3" 
end instgroup

render "root" "camera-instance" "opt"