// Simple Noah's Ark (fast iteration, simple shading) - fixed syntax
#version 3.7;
global_settings { assumed_gamma 1.0 }

background { color rgb <0.92, 0.96, 1.0> }

// Camera
camera {
  location <0, 6.2, -18>
  look_at  <0, 2.3, 0>
  angle 34
}

// Warm soft lights
light_source {
  <-10, 14, -14>
  color rgb <1.00, 0.90, 0.75>
  area_light <4,0,0>, <0,0,4>, 5, 5 adaptive 1 jitter
}
light_source {
  <10, 10, -10>
  color rgb <1.00, 0.92, 0.80>
  area_light <3,0,0>, <0,0,3>, 4, 4 adaptive 1 jitter
}
light_source { <0, 18, 6> color rgb <0.60, 0.55, 0.50> }

// Ground (subtle)
plane {
  y, 0
  pigment { color rgb <0.95,0.97,1.0> }
  finish  { diffuse 0.6 ambient 0.2 }
}

// Colors (simple)
#declare WoodCol   = color rgb <0.74, 0.55, 0.34>;
#declare TrimCol   = color rgb <0.25, 0.18, 0.12>;
#declare CabinCol  = color rgb <0.80, 0.62, 0.40>;
#declare RoofCol   = color rgb <0.35, 0.23, 0.16>;
#declare GlassCol  = color rgb <0.70, 0.85, 0.95>;

#declare MatteFinish = finish { diffuse 0.85 ambient 0.12 specular 0.10 roughness 0.06 }
#declare GlassFinish = finish { diffuse 0.30 ambient 0.12 specular 0.25 roughness 0.03 }

// -----------------------------
// Dimensions
// -----------------------------
#declare L     = 16.0;   // hull length along X
#declare Rx    = L/2;
#declare Rz    = 2.8;    // half width-ish (Z)
#declare DeckY = 3.45;

// -----------------------------
// Reusable roof prism (closed!)
// Note: prism points are in 2D and must be closed for linear_spline.
// We'll extrude along prism's sweep axis, then rotate to align along X.
// -----------------------------
#declare RoofPrism =
prism {
  linear_sweep
  linear_spline
  -2.55, 2.55,
  6,
  <-2.20, 0.00>,
  <-1.75, -1.70>,
  < 1.75, -1.70>,
  < 2.20, 0.00>,
  < 0.00, 1.25>,
  <-2.20, 0.00>   // close
  rotate <0,90,0>
  translate <0, 5.10, 0>
};

// -----------------------------
// Part geometry as separate declares (avoids union/texture scoping issues)
// -----------------------------

// Hull body (wood)
#declare HullBody =
difference {
  union {
    // Main capsule
    cylinder { <-Rx, 1.55, 0>, <Rx, 1.55, 0>, Rz }
    sphere   { <-Rx, 1.55, 0>, Rz }
    sphere   { < Rx, 1.55, 0>, Rz }

    // Lower belly
    cylinder { <-Rx+0.4, 0.95, 0>, <Rx-0.4, 0.95, 0>, Rz*0.92 }
    sphere   { <-Rx+0.4, 0.95, 0>, Rz*0.92 }
    sphere   { < Rx-0.4, 0.95, 0>, Rz*0.92 }

    // Slight vertical scaling for profile
    scale <1, 1.05, 1>
  }
  // Deck cut (flat top)
  box { <-Rx-2, DeckY, -6>, <Rx+2, 20, 6> }
};

// Rim / rail (trim) as a thin shell near deck line
#declare DeckRim =
difference {
  // Outer ring section above deck
  difference {
    union {
      cylinder { <-Rx, 1.55, 0>, <Rx, 1.55, 0>, Rz*0.98 }
      sphere   { <-Rx, 1.55, 0>, Rz*0.98 }
      sphere   { < Rx, 1.55, 0>, Rz*0.98 }
      scale <1, 1.05, 1>
    }
    box { <-Rx-2, DeckY-0.05, -6>, <Rx+2, 20, 6> }
  }
  // Inner cut to make it a rim
  difference {
    union {
      cylinder { <-Rx, 1.55, 0>, <Rx, 1.55, 0>, Rz*0.88 }
      sphere   { <-Rx, 1.55, 0>, Rz*0.88 }
      sphere   { < Rx, 1.55, 0>, Rz*0.88 }
      scale <1, 1.05, 1>
    }
    box { <-Rx-2, DeckY-0.10, -6>, <Rx+2, 20, 6> }
  }
};

// Cabin solid (used for coloring)
#declare CabinBox = box { <-2.4, DeckY, -1.55>, <2.4, 5.10, 1.55> };

// Cabin with window cutouts (a separate "shell" so the holes exist)
#declare CabinWithWindows =
difference {
  object { CabinBox }
  // cut windows on left side (negative X face)
  box { <-2.401, 4.10, -1.10>, <-2.10, 4.70, -0.20> }
  box { <-2.401, 4.10,  0.20>, <-2.10, 4.70,  1.10> }
};

// Glass panes
#declare Glass1 = box { <-2.11, 4.11, -1.09>, <-2.095, 4.69, -0.21> };
#declare Glass2 = box { <-2.11, 4.11,  0.21>, <-2.095, 4.69,  1.09> };

// Bow band accent (trim)
#declare BowBand =
intersection {
  difference {
    cylinder { <Rx-0.4, 2.05, 0>, <Rx+2.0, 2.05, 0>, Rz*1.10 }
    cylinder { <Rx-0.4, 2.05, 0>, <Rx+2.0, 2.05, 0>, Rz*0.94 }
  }
  box { <Rx-0.9, 0.0, -Rz*1.30>, <Rx+0.8, 4.3, Rz*1.30> }
};

// -----------------------------
// Assemble ark
// -----------------------------
union {
  // Hull
  object {
    HullBody
    texture { pigment { WoodCol } finish { MatteFinish } }
  }

  // Rim
  object {
    DeckRim
    texture { pigment { TrimCol } finish { MatteFinish } }
  }

  // Cabin (with windows already cut)
  object {
    CabinWithWindows
    texture { pigment { CabinCol } finish { MatteFinish } }
  }

  // Roof
  object {
    RoofPrism
    texture { pigment { RoofCol } finish { MatteFinish } }
  }

  // Glass
  object {
    Glass1
    texture { pigment { GlassCol } finish { GlassFinish } }
  }
  object {
    Glass2
    texture { pigment { GlassCol } finish { GlassFinish } }
  }

  // Bow band
  object {
    BowBand
    texture { pigment { TrimCol } finish { MatteFinish } }
  }

  translate <0, 0, 0>
}