//Sphere by Aero

global_settings {
	max_trace_level 20
	assumed_gamma 2.2
	radiosity {
		pretrace_start		0.08
		pretrace_end		0.04
		count			35

		nearest_count		2
		error_bound		0.8
		recursion_limit		4
		low_error_factor	0.5
		gray_threshold		0.0
		minimum_reuse		0.015
		brightness		1

		adc_bailout		0.01/2
	}
	photons {
		count 100000
		autostop 0
		jitter .2
		media 200
	}
	ambient_light 0
}

#include	"colors.inc"

camera {
	location	<0,5,-10>
	right		x*image_width/image_height
	look_at		<0,2,0>
}

light_source {
	<0,10,0>
	color rgb <1,1,1>
	fade_distance 11
	fade_power 1
}

plane {
	y,0
	texture {
		checker
		  texture {
		  	checker
			  texture {pigment { color Gray70 } }
			  texture {pigment { color Black  } }
			scale -0.5
		  }
		  texture {
		  	checker
			  texture {pigment { color Gray30} }
			  texture {pigment { color White } }
			scale -0.5
		  }
	}
}
difference {
	sphere {
		<0,3,0>
		2.5
	}
	sphere {
		<0,3,0>
		2.3
	}
	texture {
		checker
		texture {
		  	checker
			  texture {
			  	pigment { color Clear }
				finish {
					ambient 0.0
					diffuse 0.2
					reflection 0.7
					specular 0.5
					roughness 0.003
					phong 1
					phong_size 400
				}
  
			  
			  } 
			  texture {pigment { color Clear  } }
			scale -0.5
		  }
		  texture {
		  	checker
			  texture {pigment { color rgbf<1,1,1,0.3>} }
			  texture {
			  	pigment { color rgbf<1,1,1,0.3> } 
				finish {
					ambient 0.0
					diffuse 0.2
					reflection 0.7
					specular 0.5
					roughness 0.003
					phong 1
					phong_size 400
				}
			  }
			scale -0.5
		  }
	}
}