#version 3.7;

global_settings {
  assumed_gamma 1.0
  max_trace_level 7
  radiosity {
    pretrace_start 0.08
    pretrace_end   0.01
    count 40
    nearest_count 5
    error_bound 0.6
    recursion_limit 1
    low_error_factor 0.5
    gray_threshold 0.0
    minimum_reuse 0.015
    brightness 0.75
  }
}

background { color rgb <0.012, 0.018, 0.040> }

fog {
  fog_type 2
  distance 55
  color rgb <0.04, 0.06, 0.11>
  fog_offset 0.0
  fog_alt 3.5
  turbulence 0.4
}

camera {
  location  <0, 2.2, -9>
  look_at   <0, 0.55, 0.3>
  angle 35
}

light_source { <300, 400, -300> color rgb <1.0, 1.0, 1.0>*0.55 }
light_source { <-40, 20, -30>  color rgb <0.35, 0.45, 0.9>*0.55 }
light_source { <0, 5, -8>      color rgb <0.25, 0.25, 0.28>*0.50 shadowless }

// A soft rim/kicker to reveal paneling (dimmed)
light_source {
  <8, 5, -2>
  color rgb <0.55, 0.60, 0.75>*0.16
  area_light <1.2,0,0>, <0,0,1.2>, 3, 3 adaptive 1 jitter
}

#declare R1 = seed(12345);
#declare R2 = seed(67890);
#declare R3 = seed(24680);
#declare R4 = seed(13579);

// --- Textures (improved, procedural) ---

#declare HullPaint_White =
texture {
  pigment {
    average
    pigment_map {
      [0.72 color rgb <0.90, 0.92, 0.96>]
      [0.18 color rgb <0.86, 0.88, 0.92>]
      [0.10 granite color_map { [0 rgb <0.90,0.92,0.96>] [1 rgb <0.78,0.80,0.84>] } scale 0.35]
    }
  }
  normal {
    average
    normal_map {
      [0.65 bumps 0.25 scale 0.12]
      [0.35 wrinkles 0.20 scale 0.20]
    }
  }
  finish {
    diffuse 0.55
    specular 0.75 roughness 0.02
    reflection 0.07
    metallic 0.05
  }
}

#declare HullPanelLines =
texture {
  pigment {
    function { abs(sin(x*10)) + abs(sin(z*10)) }
    color_map {
      [0.00 color rgbt <0.10,0.12,0.16, 0.55>]
      [0.08 color rgbt <0.10,0.12,0.16, 1.00>]
      [1.00 color rgbt <0.10,0.12,0.16, 1.00>]
    }
    scale 0.55
  }
  finish { diffuse 0 specular 0 reflection 0 }
}

#declare HullGrime =
texture {
  pigment {
    bozo
    color_map {
      [0.00 color rgbt <0.08,0.07,0.06, 1.00>]
      [0.35 color rgbt <0.12,0.11,0.10, 0.92>]
      [0.60 color rgbt <0.18,0.17,0.16, 0.75>]
      [1.00 color rgbt <0.22,0.21,0.20, 0.65>]
    }
    scale 0.9
    translate <0.2, 0.0, -0.1>
  }
  finish { diffuse 0.2 specular 0.0 reflection 0 }
}

#declare HullWhite =
texture {
  average
  texture_map {
    [0.78 HullPaint_White]
    [0.12 HullPanelLines]
    [0.10 HullGrime]
  }
}

#declare HullDarkMetal =
texture {
  pigment {
    granite
    color_map {
      [0.00 rgb <0.10, 0.11, 0.14>]
      [0.55 rgb <0.14, 0.15, 0.18>]
      [1.00 rgb <0.06, 0.07, 0.09>]
    }
    scale 0.35
  }
  normal { bumps 0.35 scale 0.08 }
  finish {
    diffuse 0.45
    specular 0.55 roughness 0.03
    reflection 0.10
    metallic 0.35
  }
}

#declare StripeBluePaint =
texture {
  pigment {
    bozo
    color_map {
      [0.00 rgb <0.10, 0.35, 0.88>]
      [0.65 rgb <0.15, 0.45, 0.95>]
      [1.00 rgb <0.18, 0.55, 1.00>]
    }
    scale 0.25
  }
  normal { bumps 0.20 scale 0.10 }
  finish { diffuse 0.45 specular 0.85 roughness 0.015 reflection 0.06 }
}

#declare Glass =
texture {
  pigment { color rgbt <0.55, 0.75, 1.0, 0.78> }
  normal { bumps 0.12 scale 0.05 }
  finish {
    diffuse 0.05
    specular 0.95 roughness 0.008
    reflection 0.14
    conserve_energy
  }
}

#declare GlowCyan =
texture {
  pigment { color rgb <0.2, 0.9, 1.0> }
  finish  { emission 0.85 diffuse 0 }
}

#declare EngineCore =
texture {
  pigment { color rgb <0.35, 1.0, 1.0> }
  finish  { emission 1.20 diffuse 0 }
}

#declare EngineHalo =
texture {
  pigment { color rgbt <0.25, 0.95, 1.0, 0.88> }
  finish  { emission 0.55 diffuse 0 }
}

// --- Starfield (use consistent seeds; avoid reseeding per star) ---
#declare StarField =
union {
  #declare I = 0;
  #while (I < 420)
    #declare sx = (rand(R1)*2-1)*140;
    #declare sy = (rand(R2)*2-1)*90;
    #declare sz = 60 + rand(R3)*140;
    #declare sr = 0.10 + rand(R4)*0.22;
    #declare si = (0.30 + rand(R1)*0.65);
    sphere {
      <sx, sy, sz>, sr
      texture {
        pigment { color rgb <0.80, 0.86, 0.98>*si }
        finish { emission 0.95 diffuse 0 }
      }
      no_shadow
    }
    #declare I = I + 1;
  #end
}

object { StarField }

// --- Ship ---
#declare Ship =
union {
  // Main fuselage
  union {
    cylinder { <0, 0.55, -1.6>, <0, 0.55, 1.8>, 0.55 texture { HullWhite } }
    sphere   { <0, 0.55, 1.8>, 0.55 texture { HullWhite } }
    sphere   { <0, 0.55, -1.6>, 0.55 texture { HullWhite } }

    // Slight top spine
    cylinder { <0, 0.92, -1.2>, <0, 0.92, 1.5>, 0.14 texture { HullDarkMetal } }

    // Nose cone
    cone { <0, 0.55, 2.25>, 0.40, <0, 0.55, 3.2>, 0.02 texture { HullWhite } }

    // Cockpit glass
    intersection {
      sphere { <0, 0.78, 2.15>, 0.55 }
      box    { <-1, 0.72, 1.7>, <1, 1.35, 3.0> }
      texture { Glass }
      interior { ior 1.45 }
    }

    // Blue stripe
    box { <-0.55, 0.47, -1.4>, <0.55, 0.54, 2.9> texture { StripeBluePaint } }

    // Side dark panels
    box { <-0.62, 0.18, -0.8>, <-0.42, 0.70, 1.5> texture { HullDarkMetal } }
    box { <0.42, 0.18, -0.8>, <0.62, 0.70, 1.5> texture { HullDarkMetal } }
  }

  // Wings
  union {
    intersection {
      box { <-3.2, 0.38, -0.4>, <-0.55, 0.50, 1.55> }
      plane { <0.25, 0, 1>, 0.95 }
      plane { <-0.4, 0, 1>, 1.8 }
      texture { HullWhite }
    }
    intersection {
      box { <0.55, 0.38, -0.4>, <3.2, 0.50, 1.55> }
      plane { <-0.25, 0, 1>, 0.95 }
      plane { <0.4, 0, 1>, 1.8 }
      texture { HullWhite }
    }

    // Wingtip caps
    box { <-3.2, 0.38, 0.9>, <-2.85, 0.52, 1.55> texture { HullDarkMetal } }
    box { <2.85, 0.38, 0.9>, <3.2, 0.52, 1.55> texture { HullDarkMetal } }

    // A small blue accent on wings (thin stripe)
    box { <-3.2, 0.495, 0.15>, <-0.62, 0.505, 0.22> texture { StripeBluePaint } }
    box { <0.62, 0.495, 0.15>, <3.2, 0.505, 0.22> texture { StripeBluePaint } }
  }

  // Engine nacelles
  union {
    union {
      cylinder { <-1.55, 0.25, -1.2>, <-1.55, 0.25, 0.9>, 0.28 texture { HullDarkMetal } }
      sphere   { <-1.55, 0.25, 0.9>, 0.28 texture { HullDarkMetal } }
      cone     { <-1.55, 0.25, -1.2>, 0.28, <-1.55, 0.25, -1.7>, 0.18 texture { HullDarkMetal } }

      torus { 0.22, 0.04 rotate <90,0,0> translate <-1.55, 0.25, 0.95> texture { StripeBluePaint } }

      // Exhaust core + halo
      cone { <-1.55, 0.25, -1.70>, 0.16, <-1.55, 0.25, -2.25>, 0.02 texture { EngineCore } no_shadow }
      cone { <-1.55, 0.25, -1.65>, 0.22, <-1.55, 0.25, -2.55>, 0.02 texture { EngineHalo } no_shadow }
    }

    union {
      cylinder { <1.55, 0.25, -1.2>, <1.55, 0.25, 0.9>, 0.28 texture { HullDarkMetal } }
      sphere   { <1.55, 0.25, 0.9>, 0.28 texture { HullDarkMetal } }
      cone     { <1.55, 0.25, -1.2>, 0.28, <1.55, 0.25, -1.7>, 0.18 texture { HullDarkMetal } }

      torus { 0.22, 0.04 rotate <90,0,0> translate <1.55, 0.25, 0.95> texture { StripeBluePaint } }

      cone { <1.55, 0.25, -1.70>, 0.16, <1.55, 0.25, -2.25>, 0.02 texture { EngineCore } no_shadow }
      cone { <1.55, 0.25, -1.65>, 0.22, <1.55, 0.25, -2.55>, 0.02 texture { EngineHalo } no_shadow }
    }
  }

  // Small window lights
  union {
    #declare W = -0.35;
    #while (W <= 0.35)
      sphere { <W, 0.62, 1.3>, 0.05 texture { GlowCyan } no_shadow }
      #declare W = W + 0.175;
    #end
  }

  // Subtle bottom fin
  intersection {
    box { <-0.12, 0.05, -0.5>, <0.12, 0.55, 0.7> }
    plane { <0, 1, 0>, 0.22 }
    texture { HullDarkMetal }
  }

  rotate <0, -18, 0>
  rotate <6, 0, 0>
  translate <0, 0, 0>
}

object { Ship }

// Keep a non-rendering catcher plane, but invisible
plane {
  y, -20
  texture { pigment { color rgb <0,0,0> } finish { ambient 0 diffuse 0 } }
  no_image
}