// Persistence of Vision Ray Tracer Scene Description File
// File: sunset.pov
// Vers: 3.1
// Desc:sunset gradient skysphere 
// Date: 10/10/98
// Auth: ArfGrafix

// ==== Standard POV-Ray Includes ====
#include "colors.inc"	// Standard Color definitions
#include "textures.inc"	// Standard Texture definitions 

// Comments for povray sunset sketch. The main light source in this graphic is a sphere of radius 863,891
// 'miles' set at a distance of 92,977,000 'miles'. Initially I had the light source defined as an area 
// light based on the surface area of the sphere using the 'sun size' parameters, but got a memory over
//flow error so the size of the area light had to be significantly reduced. The plane in this sketch is 
//reference as a horizon.

#declare Sun_source = sphere { <0,0,92977000>, 863891   pigment{ color rgb<1,.25,0> }
                              finish { ambient 1 } } 
                              
#declare Sun = light_source { <0,0,92977000>, color Orange                              
                           area_light <7.50,0,0>, <0,7.50,0>, 7.50, 7.50
                           looks_like { Sun_source }
                           }     

#declare xtralite = light_source
{
  0*x // light's position (translated below)
  color red 1.0  green 1.0  blue 1.0  // light's color
  translate <-20, 40, -20>
}

#declare Rplane = plane
{ y, 0 pigment {  color rgb<1,1,1> } finish { ambient .8} }

#declare cam1 = camera
{
  location  <0.0,10,-20>
  look_at   <0.0,2,5>
}
#declare cmap1 = color_map { [0.0 color rgb <  0.184314  0.184314 0.309804>]//dblue
                [0.25 color rgb <0.258824  0.258824  0.435294>]//lblue
                [.45 color rgb<.85,.85,1>]//BrightGold 
                [.75 color rgbt<1, .5, 0,1>]//orange
                [1.0 color rgb <1, .25, 0>] }
                
#declare sky1 = sky_sphere { pigment {gradient y color_map { cmap1 } }rotate -90*x }               
                


          
                          

         




camera { cam1 }

background { Cyan }

object { Sun }
object { Rplane }
/*
sky_sphere { sky1}
*/


  

sphere { <0,2,5>, 10 pigment { color rgb<1,1,0> } }