// Warm lighthouse vignette with CONICAL light + soft shadows
// Single-file POV-Ray SDL, fast iteration, simple shading (no image textures)

#version 3.7;

global_settings {
    assumed_gamma 1.8 max_trace_level 16
    radiosity {
        pretrace_start 0.08
        pretrace_end   0.01
        count 200
        nearest_count 10
        error_bound 0.5
        recursion_limit 2
        low_error_factor 0.5
        gray_threshold 0.0
    }
}
	
#include "colors.inc"

background { color rgb <0.03, 0.07, 0.08> }

// ------------------------------------------------------------
// Camera / Background mood (teal foggy sky)
// ------------------------------------------------------------
camera {
  location <4.5, 8.4, -39.5>
  look_at  <0.0, 5.8, 0.0>
  angle 37
  up <0,9,0>
  right <16,0,0>  // right,up -> 16:9

}

sky_sphere {
  pigment {
    gradient y
    color_map {
      [0.00 color rgb <0.02, 0.06, 0.07>]
      [0.45 color rgb <0.05, 0.22, 0.24>]
      [0.78 color rgb <0.10, 0.38, 0.42>]
      [1.00 color rgb <0.35, 0.46, 0.42>]
    }
    scale 1.6
  }
}

fog {
  fog_type 2
  distance 55
  color rgb <0.18, 0.38, 0.36>
  fog_offset 0
  fog_alt 2.0
  turbulence 0.7
}

// ------------------------------------------------------------
// Simple finishes (no textures)
// ------------------------------------------------------------
#declare Fin_Matte = finish { diffuse 0.95 ambient 0 specular 0.05 roughness 0.14 }
#declare Fin_Satin = finish { diffuse 0.85 ambient 0 specular 0.18 roughness 0.08 }
#declare Fin_Metal = finish { diffuse 0.25 ambient 0 specular 0.60 roughness 0.03 }

#declare Col_Rock     = color rgb <0.03,0.04,0.06>;
#declare Col_Platform = color rgb <0.06,0.07,0.09>;
#declare Col_Paint    = color rgb <0.94,0.91,0.86>;
#declare Col_Metal    = color rgb <0.10,0.12,0.14>;

// ------------------------------------------------------------
// Lights: warm + soft shadows, plus conical lantern spotlight
// ------------------------------------------------------------

// Soft warm key (area)
light_source {
  <18, 20, -22>
  color rgb <1.00, 0.86, 0.68>*1.05
  area_light <4,0,0>, <0,0,4>, 7, 7
  adaptive 1
  jitter
}

// Soft warm fill (area)
light_source {
  <-12, 14, -12>
  color rgb <1.00, 0.78, 0.58>*0.45
  area_light <3,0,0>, <0,0,3>, 6, 6
  adaptive 1
  jitter
}

// Cool ambient lift (no shadows)
light_source {
  <0, 18, -6>
  color rgb <0.55, 0.85, 1.00>*0.16
  shadowless
}

// ------------------------------------------------------------
// Water plane (subtle)
// ------------------------------------------------------------
plane {
  y, -7.2
  pigment { color rgb <0.02,0.07,0.08> }
  finish { diffuse 0.18 specular 0.10 roughness 0.12 }
  normal { ripples 0.22 scale 0.9 }
}

// ------------------------------------------------------------
// Cliff / Platform (stylized silhouette, aligned)
// ------------------------------------------------------------
#declare CliffYShift = 1.0;
#declare PlatformTopY = 0.60 + CliffYShift;

#declare Cliff =
union {
  // Platform slab
  box { <-7.2, 0.0, -2.6>, <7.2, 0.60, 2.6>
    pigment { Col_Platform } finish { Fin_Matte }
  }

  // Main cliff blocks
  box { <-6.5, -2.8, -2.2>, <5.4, 0.0, 2.2>
    pigment { Col_Rock } finish { Fin_Matte }
  }
  box { <-5.4, -5.9, -1.85>, <4.4, -2.8, 1.85>
    pigment { Col_Rock } finish { Fin_Matte }
  }
  box { <-4.2, -8.5, -1.45>, <3.6, -5.9, 1.45>
    pigment { Col_Rock } finish { Fin_Matte }
  }

  // Right overhang
  box { <1.8, -2.4, -2.0>, <7.6, -0.3, 2.0>
    pigment { Col_Rock } finish { Fin_Matte }
  }
  box { <3.2, -5.1, -1.45>, <7.4, -2.4, 1.45>
    pigment { Col_Rock } finish { Fin_Matte }
  }

  // Cutouts to break silhouette
  difference {
    box { <-6.5, -8.5, -2.2>, <7.6, 0.60, 2.2>
      pigment { Col_Rock } finish { Fin_Matte }
    }
    box { <-7.8, -4.2, -3.4>, <-3.3, 1.6, 3.4> }
    box { <2.2, -7.5, -3.4>, <8.2, -3.1, 3.4> }
    box { <-2.2, -9.2, -3.4>, <1.7, -6.2, 3.4> }
  }

  translate <0, CliffYShift, 0>
}
object { Cliff }

// ------------------------------------------------------------
// Lighthouse (precisely stacked and centered)
// ------------------------------------------------------------
#declare BaseY   = PlatformTopY;
#declare TowerH  = 9.2;
#declare TowerR0 = 1.18;
#declare TowerR1 = 0.76;
#declare LightY  = BaseY + TowerH;

#declare Lighthouse =
union {
  // Tower body
  cone {
    <0, BaseY, 0>, TowerR0
    <0, BaseY + TowerH, 0>, TowerR1
    pigment { Col_Paint }
    finish  { Fin_Satin }
  }

  // Base ring (touching platform)
  cylinder {
    <0, BaseY-0.10, 0>, <0, BaseY+0.10, 0>, TowerR0*1.035
    pigment { Col_Metal }
    finish  { Fin_Metal }
  }

  // Simple window recess (front, negative Z)
  difference {
    box { <-0.24, BaseY+1.3, -1.02>, <0.24, BaseY+2.3, -0.62> }
    box { <-0.16, BaseY+1.42, -1.03>, <0.16, BaseY+2.18, -0.76> }
    pigment { Col_Metal }
    finish  { Fin_Metal }
  }

  // Lantern deck ring
  cylinder {
    <0, LightY-0.28, 0>, <0, LightY+0.12, 0>, 1.10
    pigment { Col_Metal }
    finish  { Fin_Metal }
  }

  // Railing posts
  #declare k = 0;
  #while (k < 14)
    #declare ang = radians(k*(360/14));
    cylinder {
      <0.98*cos(ang), LightY+0.12, 0.98*sin(ang)>,
      <0.98*cos(ang), LightY+0.58, 0.98*sin(ang)>,
      0.04
      pigment { Col_Metal }
      finish  { Fin_Metal }
    }
    #declare k = k + 1;
  #end

  // Lantern frame
  difference {
    cylinder { <0, LightY+0.12, 0>, <0, LightY+0.98, 0>, 0.92 }
    cylinder { <0, LightY+0.14, 0>, <0, LightY+0.96, 0>, 0.82 }
    pigment { Col_Metal }
    finish  { Fin_Metal }
  }

  // Lantern glass
  cylinder {
    <0, LightY+0.16, 0>, <0, LightY+0.94, 0>, 0.83
    pigment { color rgbt <1,1,1,0.88> }
    finish  { diffuse 0.05 ambient 0 specular 0.85 roughness 0.006 }
    no_shadow
  }

  // Inner warm glow (visible source)
  cylinder {
    <0, LightY+0.22, 0>, <0, LightY+0.88, 0>, 0.64
    pigment { color rgb <1.00, 0.92, 0.76>*1.3 }
    finish  { diffuse 0.10 ambient 1.25 specular 0 }
    no_shadow
  }

  // Roof cap
  cone {
    <0, LightY+0.98, 0>, 1.02,
    <0, LightY+1.54, 0>, 0.10
    pigment { Col_Metal }
    finish  { Fin_Metal }
  }
}
object { Lighthouse }

// ------------------------------------------------------------
// CONICAL spotlight from the lantern (requested) + soft shadows
// ------------------------------------------------------------
#declare BeamDir = <1, 0.02, 0>; // points to the right with slight upward tilt
#declare BeamPos = <0, LightY+0.62, 0>;

light_source {
  BeamPos
  color rgb <1.00, 0.92, 0.74>*2.15
  spotlight
  point_at (BeamPos + BeamDir*40)
  radius 8
  falloff 14
  tightness 8

  // soften spotlight shadows
  area_light <0.35,0,0>, <0,0.35,0>, 7, 7
  adaptive 1
  jitter
}

// Visible volumetric-ish beam (fast hollow cone)
#declare BeamLen   = 38;
#declare BeamAngle = 14;

cone {
  <0, 0, 0>, 0.22
  <BeamLen, 0, 0>, tan(radians(BeamAngle))*BeamLen
  hollow
  pigment { color rgbt <1.00, 0.95, 0.84, 0.86> }
  finish  { diffuse 0.05 ambient 0.90 specular 0 }
  no_shadow
  translate BeamPos
  rotate <0, -10, 0>
}

// ------------------------------------------------------------
// Simple silhouette figures (warm scene; minimal)
// ------------------------------------------------------------
#declare Tex_Silhouette = texture {
  pigment { color rgb <0.05,0.06,0.09> }
  finish  { Fin_Matte }
}

#macro Person(Pos, S)
union {
  cylinder { <0,0,0>, <0,1.25,0>, 0.22 }  // torso
  sphere   { <0,1.52,0>, 0.29 }           // head
  cylinder { <-0.11,0,0>, <-0.11,-0.70,0>, 0.10 }
  cylinder { < 0.11,0,0>, < 0.11,-0.70,0>, 0.10 }
  cylinder { <0.20,0.90,0>, <0.58,0.55,0>, 0.07 }
  texture { Tex_Silhouette }
  scale S
  translate Pos
}
#end

Person(<-1.35, BaseY+0.06, -0.35>, 0.90)
Person(< 2.05, BaseY+0.06, -0.12>, 1.18)
Person(<-2.55, BaseY+0.06, -0.05>, 0.72)

// ------------------------------------------------------------
// Zodiac-like faint arc behind lighthouse (simple points)
// ------------------------------------------------------------
#declare RingR = 6.0;
#declare RingY = LightY+0.95;
#declare RingZ = 0.8;
#declare DotN  = 48;

#declare i = 0;
#while (i < DotN)
  #declare a = radians(205 + (135*i/(DotN-1)));
  sphere {
    <RingR*cos(a), RingY + 0.10*sin(a*0.65), RingZ + RingR*sin(a)>
    0.075
    pigment { color rgbt <0.98, 1.00, 1.00, 0.55> }
    finish  { diffuse 0.05 ambient 0.80 specular 0 }
    no_shadow
  }
  #declare i = i + 1;
#end

// ------------------------------------------------------------
// Floating bokeh/snow particles (fast, deterministic seeds)
// ------------------------------------------------------------
#declare PCount = 85;
#declare j = 0;
#while (j < PCount)
  #declare s1 = seed(1000 + j*7);
  #declare s2 = seed(2000 + j*11);
  #declare s3 = seed(3000 + j*13);

  #declare px = -9 + 18*rand(s1);
  #declare py =  1 + 15*rand(s2);
  #declare pz = -10 + 26*rand(s3);

  #declare pr = 0.05 + 0.30*rand(s2);
  #declare tr = 0.60 + 0.34*rand(s1);

  sphere {
    <px, py, pz>, pr
    pigment { color rgbt <0.98, 0.98, 1.00, tr> }
    finish  { diffuse 0.03 ambient 0.92 specular 0 }
    no_shadow
  }
  #declare j = j + 1;
#end