POV-Ray : Newsgroups : povray.binaries.images : Re: Cloud Surface : Re: Cloud Surface Server Time
28 Jun 2024 21:16:10 EDT (-0400)
  Re: Cloud Surface  
From: Sven Littkowski
Date: 28 Nov 2017 06:35:45
Message: <5a1d4a11$1@news.povray.org>
CODE

--------------------------

#version 3.8;

#declare MyRadiosity = on;

global_settings
{
 assumed_gamma 1.4
 #if(MyRadiosity=on)
  radiosity { media on }
 #end
}

#default
{
 finish { ambient 0.0 diffuse 1.0 }
}

//------------------------------------------------------------------------
#include "colors.inc"
#include "textures.inc"
#include "glass.inc"
#include "metals.inc"
#include "golds.inc"
//------------------------------------------------------------------------

camera
{
 /*ultra_wide_angle*/ //angle 20
 location  < -35.0 , 11.0 , 0.0 >
 //right     x*image_width/image_height // not needed for v3.8
 look_at   < 0.0 , 5.0 , 0.0 >
}

// sun -------------------------------------------------------------------
light_source
{
 -z*9999.0//< 50, 100, -250 >*10e4
 color 1.0 * 1.4//< 1.0,  0.62353,  0.46667 >*2
 rotate < 20.0, 240.0, 0.0 > // altitude, azimuth, tilt
}

// sky -------------------------------------------------------------------
background { color rgb 0.0 }

disc
{
 0.0, y, 1.0, 0.0
 hollow on
 no_shadow
 pigment { rgb < 0.5, 0.75, 1.0 > }
 scale 100.0
 translate y*100.0
}

// ground -----------------------------------------------------------------


box
{
 < -1.0, -1.0, -1.0 > < 1.0, 1.0, 1.0 >
 pigment { color rgb 1.0 }
 scale < 555.0, 497.0, 555.0 >
 translate -y*494.0
}

//-------------------------------------------------------------------------
-
// Clouds
#local Scale = 5.0;

#declare Clouds = density
{
 ripples   // controls the cloud formation
 color_map
 {
  [ 0.33 rgb  10.0 ]
  [ 0.67 rgb 100.0 ]
 }
 scale < 3.0, 1.0, 10.0 >*0.5
 warp { turbulence < 2.5, 1.0, 1.6 > }
 rotate 45.0*y
}

//cloud layer:
box
{
 < -1.0, -1.0, -1.0 > < 1.0, 1.0, 1.0 >
 pigment { rgbt 1.0 }
 hollow
 interior
 {
  media
  {
   samples 20
   absorption < 3.0, 4.0, 0.5 >*1.0/(Scale*100.0)
   emission   < 1.0, 1.0, 1.0 >*0.5/(Scale*100.0)
   scattering
   {
    1
    < 0.5, 0.75, 1.5 >*3.0/(Scale*100.0)
    extinction 0.5
   }
   density
   {
    boxed
    density_map
    {
     [ 0.000 rgb 0.0 ]
     [ 0.001 Clouds scale 1.0/100.0 ]
    }
   }
  }
 }
 scale Scale*100.0
 translate -y*494.0
}

//-------------------------------------------------------------
//atmosphere:
sphere
{
 < 0.0, 0.0, 0.0 >, 1.0
 pigment { rgbt 1.0 }
 hollow
 interior
 {
  media
  {
   samples 20
   absorption 0.5
   scattering
   {
    5
    < 1.25, 1.0, 1.5 >*2.0/Scale
    extinction 0.67
    eccentricity 0.2
   }
   density
   {
    gradient y
    color_map
    {
/*
     [ 0.00 rgb 1.0 ]  //base ground fog
     [ 0.10 rgb < 9.0, 0.3, 0.10 > ]  //top ground fog
     [ 0.30 rgb < 0.9, 0.3, 0.10 > ]  //top ground fog
     [ 0.50 rgb < 0.5, 0.1, 0.09 >*0.100 ] //base atmospheric haze
     [ 0.67 rgb < 0.1, 0.2, 0.90 >*0.100 ] //top atmospheric haze
     [ 1.00 rgb < 0.1, 0.3, 0.90 >*0.001 ] //top atmospheric haze
*/
     [ 0.00 rgb < 1.0, 1.0, 1.00 >*1.000 ] //base ground fog
     [ 0.10 rgb < 3.0, 0.3, 0.10 >*1.000 ] //top ground fog
     [ 0.30 rgb < 0.3, 0.3, 0.10 >*1.000 ] //top ground fog
     [ 0.50 rgb < 0.5, 0.1, 0.09 >*0.100 ] //base atmospheric haze
     [ 0.67 rgb < 0.3, 0.7, 1.00 >*0.100 ] //top atmospheric haze
     [ 1.00 rgb < 0.3, 0.7, 1.00 >*0.001 ] //top atmospheric haze
    }
    rotate -x*15.0
    warp { spherical }
    scale Scale*2.0*y
   }
  }
 }
 scale Scale*111.0
 translate -y*535.0
}


//-------------------------------------------------------------
// Planet:

union
{
 sphere
 {
  < 0.0, 0.0, 0.0 > 7.0
  pigment
  {
   gradient y
   color_map
   {
    [ 0.00 rgb < 1.0, 1.0, 1.0 >*0.25 ]
    [ 0.10 rgb < 1.0, 1.0, 1.0 >*0.25 ]
    [ 0.12 rgb < 1.0, 1.0, 1.0 >*0.25 ]
    [ 0.15 rgb < 0.80392, 0.66275, 0.47059 >*0.25 ]
    [ 0.20 rgb < 0.80392, 0.66275, 0.47059 >*0.25 ]
    [ 0.22 rgb < 0.63922, 0.55686, 0.31373 >*0.25 ]
    [ 0.27 rgb < 0.63922, 0.55686, 0.31373 >*0.25 ]
    [ 0.40 rgb < 0.47451, 0.30980, 0.14118 >*0.25 ]
    [ 0.43 rgb < 0.47451, 0.30980, 0.14118 >*0.25 ]
    [ 0.45 rgb < 0.20392, 0.24314, 0.41176 >*0.25 ]
    [ 0.55 rgb < 0.20392, 0.24314, 0.41176 >*0.25 ]
    [ 0.57 rgb < 0.47451, 0.30980, 0.14118 >*0.25 ]
    [ 0.60 rgb < 0.47451, 0.30980, 0.14118 >*0.25 ]
    [ 0.73 rgb < 0.63922, 0.55686, 0.31373 >*0.25 ]
    [ 0.78 rgb < 0.63922, 0.55686, 0.31373 >*0.25 ]
    [ 0.80 rgb < 0.80392, 0.66275, 0.47059 >*0.25 ]
    [ 0.85 rgb < 0.80392, 0.66275, 0.47059 >*0.25 ]
    [ 0.88 rgb < 1.0, 1.0, 1.0 >*0.25 ]
    [ 0.90 rgb < 1.0, 1.0, 1.0 >*0.25 ]
    [ 1.00 rgb < 1.0, 1.0, 1.0 >*0.25 ]
   }
   turbulence 0.3
   translate < 0.0, -7.0, 0.0 >
   scale 14.0
  }
 }
 difference
 {
  cylinder { < 0.0, -0.00001, 0.0 > < 0.0, 0.00001, 0.0 > 16.0 }
  cylinder { < 0.0, -0.00002, 0.0 > < 0.0, 0.00002, 0.0 > 10.0 }
  pigment
  {
   onion
   color_map
   {
    [ 0.00 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.60 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.62 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.63 rgb < 0.80392, 0.66275, 0.47059 > ]
    [ 0.66 rgb < 0.80392, 0.66275, 0.47059 > ]
    [ 0.67 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.71 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.73 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.76 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.80 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.81 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.82 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.83 rgb < 0.47451, 0.30980, 0.14118 > ]
    [ 0.86 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.88 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.89 rgb < 0.80392, 0.66275, 0.47059 > ]
    [ 0.91 rgb < 0.80392, 0.66275, 0.47059 > ]
    [ 0.97 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 0.99 rgb < 0.63922, 0.55686, 0.31373 > ]
    [ 1.00 rgb < 0.63922, 0.55686, 0.31373 > ]
   }
   scale 16.0
  }
  finish { crand 1.0 emission 0.1 }
 }
 scale 250.0
 rotate < -10.0, -20.0, 50.0 >
 translate < 160.0, 50.0, -100.0 >*33.0
}

// Big Sun
sphere
{
 < 0.0, 0.0, 0.0 > 1.0
 pigment
 {
  gradient y
  color_map
  {
   [ 0.00 rgb < 0.0, 0.0, 0.0 > ]
   [ 0.50 rgb < 0.0, 0.0, 0.0 > ]
   [ 1.00 rgb < 3.0, 0.0, 0.1 >*5.0 ]
  }
  translate < 0.0, -0.5, 0.0 >
  scale 2.0
 }
 finish { emission 1.0 }
 scale 12.0
 scale 33.0
 translate < 80.0, -0.0, 35.0 >*33.0
}
// Small Sun
sphere
{
 < 0.0, 0.0, 0.0 > 1.0
 pigment { color rgb < 0.1, 0.3, 20.0 >*10.0 }
 finish { emission 2.0 }
 scale 33.0
 translate < 80.0, 12.0, 46.0 >*33.0
}

//-------------------------------------------------------------
//artefact:
#local S=seed(4132);
union
{
 #for (It,1.0,8.0,1.0)

  #local xR=rand(S);
  #local yR=rand(S);
  #local zR=rand(S);

  #local xR2=rand(S);
  #local yR2=rand(S);
  #local zR2=rand(S);

  box
  {
   0.0, 1.0
   scale < 1.0+xR, 8.0+yR*4, 1.0+zR >/2.0
   pigment
   {
    checker
    color rgb 0.1 color rgb 0.9 scale 0.5
   }
   translate (-< xR*20.0,0.0,zR*20.0 > + <xR2*40.0, 0.0, zR2*40.0 >)/2.0
  }
 #end
 rotate y*90.0
 translate < -20.0, 2.0, 5.0 >
}

---

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