/*
	Persistence of Vision Ray Tracer Scene Description File
	File: Solar.pov
	Vers: 3.6
	Desc: Experimenting with media to create a star.	Date: 05/05/2005
	Auth: Anthony D. Baye
//	Note: kolors.inc can be safely replaced by colors.inc, I use an 
extended color include file, though I can't remember where I got it.
*/

#include "kolors.inc"
#include "textures.inc"

#declare ft = 12 ;
#declare mi = 5280*ft;
#declare cm = ft/2.54;
#declare km = mi*2.54;

/* !--- Global Switches ---! */
#declare RAD	= off	;
#declare PHO	= on	;
/* -------------------------------- */

global_settings {
#if(RAD)
	radiosity {
		pretrace_start 0.08
		pretrace_end   0.01
		count 35

		nearest_count 5
		error_bound 0.2
		recursion_limit 2

		low_error_factor 0.2
		gray_threshold 0.2
		minimum_reuse 0.015
		brightness 0.57

		adc_bailout 0.01/2
	   }
#end

#if (PHO)
	photons {
		count 20000
		autostop 0
		jitter 0.4
		media 50, 30
		}
#end
	}

#default { pigment { rgb 0.71875 } finish { ambient 0.3 diffuse 0.5 } }

#declare Orbit = 5.0 ;


camera {
	location <Orbit*sin(radians(72)), Orbit*tan(radians(18)), 
Orbit*cos(radians(72))>
	look_at <Orbit*sin(radians(144)), Orbit*tan(radians(18)), 
Orbit*cos(radians(144))>
	}

/*
camera {
	location <4.0, 2.175, -15.0>
	look_at <-4.35, 1.0375, 0.0>
	}
*/

light_source { <0.0, 0.0, 0.0> color 1 photons { reflection on 
refraction on } media_interaction off }

#declare Corona =
	density {
		bozo
		sine_wave
		turbulence 1.5
		octaves 6
		lambda 0.2
		phase 0.75
		color_map {
			[0.0 color rgbf <0.0, 0.0, 0.0> ]
			[0.4375 color rgbf <0.0, 0.0, 0.0> ]
			[0.5625 color rgbf <0.0, 0.0, 0.5> ]
			[0.625 color rgbf <0.0, 0.3125, 0.75> ]
			[0.71875 color rgbf <0.0, 0.625, 1.0> ]
			[0.75 color rgbf <0.0, 0.875, 1.0> ]
			[0.8125 color rgbf <0.0, 0.0, 0.5> ]
			[0.875 color rgbf <0.0, 0.0, 0.0> ]
			[1.0 color rgbf <0.0, 0.0, 0.0> ]
			}
			scale 1/3
		}

object {
	sphere { 0.0, 4.5 hollow on }
		pigment { Clear }
		finish { ambient 1 diffuse 0 }
		interior {
			media {
				method 3
				intervals 1
				scattering { 3, White }
				samples 30, 50
				emission rgb 2
				density {
					spherical
					color_map {
						[0.0 color rgb <0.125, 0.125, 0.0> ]
						[0.00390625 color rgb <1.0, 1.0, 0.0> ]
						[0.0078125 color rgb 0.0 ]
						[0.03125 color rgb 0.15625 ]
						[0.09375 color rgb 0.25 ]
						[0.1875 color rgb 0.375 ]
						[1.0 color rgb 1.00 ]
						}
						scale 4.17
					}
				}
			media {
				method 3
				intervals 1
				scattering { 3, White }
				samples 30, 50
				emission rgb 2
				density {
					bozo
					sine_wave
					turbulence 1.5
					octaves 6
					lambda 0.2
					phase 0.75
					color_map {
						[0.0 color rgbf 0.0 ]
						[0.4375 color rgbf 0.0 ]
						[0.5625 color rgbf 0.5 ]
						[0.625 color rgbf 0.6875 ]
						[0.71875 color rgbf 0.75 ]
						[0.75 color rgbf 0.75 ]
						[0.8125 color rgbf 0.5 ]
						[0.875 color rgbf 0.0 ]
						[1.0 color rgbf 0.0 ]
						}
						scale 1/3
					}
				}
			}
			photons { pass_through reflection on refraction on }
	}

media {
	method 3
	intervals 1
	scattering { 3, White }
	samples 30, 50
	density {
		bozo
		sine_wave
		turbulence 1.5
		octaves 6
		lambda 0.2
		phase 0.75
		color_map {
			[0.0 color rgbf <0.0, 0.0, 0.0> ]
			[0.4375 color rgbf <0.0, 0.0, 0.0> ]
			[0.5625 color rgbf <0.0, 0.0, 0.5> ]
			[0.625 color rgbf <0.0, 0.21875, 0.75> ]
			[0.71875 color rgbf <0.0, 0.46875, 1.0> ]
			[0.75 color rgbf <0.0, 0.71875, 1.0> ]
			[0.8125 color rgbf <0.0, 0.0, 0.5> ]
			[0.875 color rgbf <0.0, 0.0, 0.0> ]
			[1.0 color rgbf <0.0, 0.0, 0.0> ]
			}
			scale 1/3
		}
	}


plane { z, -1e5
	texture { Starfield }
	}