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

verbose on

link "square.so"
$include "square.mi"
link "lambert.so"
$include "lambert.mi"
link "hair_geo_row.so"
$include "hair_geo_row.mi"
link "hair_color_light.so"
$include "hair_color_light.mi"
link "sinusoid_soft_spotlight.so"
$include "sinusoid_soft_spotlight.mi"

options "opt"
    object space
    contrast .1 .1 .1 1
    scanline rapid
    shadow on
    shadowmap detail
    samples collect 5
    filter mitchell
end options
 


light "light"
  "sinusoid_soft_spotlight" (
	"light_color"  1 1 1,
	"inner_spread" .93
    )
    origin 2 2 -2
    direction -2 -2 2
    spread .75
    shadowmap detail
    shadowmap samples 16
    shadowmap detail samples 4
    shadowmap resolution 1024
    shadowmap softness .01
end light

instance "light-inst" "light" end instance

material "diffuse"
    "lambert" ( 
	"diffuse" .95 .95 1,
        "lights" ["light-inst"]
    )
end material

material "hair_light"
    "hair_color_light" (
        "lights" ["light-inst"],
        "diffuse" .55 .3 .05,
	"specular" .65 .65 .65,
	"root_opacity" .2,
        "tip_opacity" .2,
	"exponent" 80
    )
    shadow "hair_color_light" (
        "diffuse" .55 .3 .05,
	"root_opacity" .05,
        "tip_opacity" .05,
    )
end material

instance "hair-instance"
    geometry 
        "hair_geo_row" (
	    "name" "::hair-1",
            "radius" .0025,
	    "count" 4000,
	    "bbox_min" -.7 -.5 -2.5,
	    "bbox_max"  .7 1.5 0,
	    "y_offset_max" .1,
	    "z_offset_max" .1,
        )
    material "hair_light"
end instance


camera "cam"
    output "rgba" "tif"
        "geometry_12A.tif"
    focal 1.5
    aperture 1
    aspect 1
    resolution 350 350
end camera

instance "camera-instance" "cam"
    transform 
        0.937749 0.006431 -0.347255 0.0 
        -0.0 0.999829 0.018515 0.0 
        0.347314 -0.017363 0.937588 0.0 
        0.069463 -0.250111 -2.696779 1.0 
end instance

instance "square-1"
    geometry "bw_square" ()
    material "diffuse"
    transform 
        0.010 0.0 0.0 0.0 
        0.0 -0.0 -1.0 0.0 
        0.0 0.010 -0.0 0.0 
        0.0 -0.0 -0.50 1.0 
    tag 1
    globillum on
    globillum 3
end instance

instgroup "root"
    "camera-instance"
    "light-inst" "hair-instance"    "square-1" 
end instgroup

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