#include "ruins.inc"

#declare landsize = 200
#declare landheight = 100

#declare lightpos = <-250, 100, 50>
#declare moonpos = <-450, 200, 800>
#declare ruinspos = <0, -42,-75>
#declare camerapos = <10, -12, -130>

#declare Brown = color rgb <.247, .165, .165>
#declare MarsRed = color rgb <.31, .185 .185>
#declare White = color rgb <1, 1, 1>
#declare Black = color rgb <0, 0, 0>
#declare Gray = color rgb <.5, .5, .5>

#declare MountainT =
texture {
  pigment {
    bozo
    turbulence .25
    color_map {
      [0, 1  color Brown
             color MarsRed ]
    }
  }
  normal { bumps 1 }
  finish { crand .05 }
} 

#declare PlainsT =
texture {
  MountainT
  normal { bumps 1 }
  normal { dents 1 }
  scale 1/5
}

#declare SkyT =
texture {
  pigment {
    granite
    turbulence 1
    color_map {
      [0, .01 color White color White]
      [.01, .5 color Black color Black]
      [.5, .501 color Gray color Gray]
      [.501, 1.01 color Black color Black]
    }
  }
  finish { ambient 1 }
}

#declare MoonT = 
texture {
  pigment { color rgb <.3, .32, .3> }
  normal { dents .5 }
  normal { bumps .5 }
}

camera {
  location camerapos
  look_at camerapos * <0, 1, 0>
}

/*fog {
  color rgb <.05, .05, .05>
  distance 1000
}*/

light_source { lightpos color White }
light_source { lightpos + <1, 0, 0> color White }
light_source { lightpos - <1, 0, 0>  color White }
light_source {
  lightpos + <0, 1, 0>
  color White
  spotlight
  point_at moonpos - <20, 0, 0>
  radius 5
  falloff 10
  tightness 10
}
/*light_source {
  lightpos - <0, 1, 0>
  color White
  spotlight
  point_at moonpos - <20, 0, 0>
  radius 5
  falloff 10
  tightness 10
}*/

// mountain range
height_field {
  pot "marsmnt.pot"
  smooth
  water_level .08
  scale <landsize, landheight, landsize>
  translate <-landsize/2, -landheight/2, -landsize/2>
  texture { MountainT scale 10 }
}

// sky
sphere {
  <0, 0, 0>, 1000
  texture { SkyT scale 250 }
  no_shadow
}

// plains
disc {
  <0, 0, 0>, <0, 1, 0>, 180
  texture { PlainsT scale 10 }
  translate <0, -42, 0>
}

// moon
sphere {
  moonpos, 100
  texture { MoonT scale 10 }
  no_shadow
}

// ruins
object {
  Ruins
  scale .25
  translate ruinspos
}

//light_source { camerapos + <0, 1, 0> color White }
//light_source { camerapos - <0, 1, 0> color White }