#version 3.7;

global_settings {
  assumed_gamma 1.0
  max_trace_level 12
}

#include "colors.inc"
#include "textures.inc"
#include "finish.inc"

background { color srgb <0.94, 0.95, 0.98> }

// -------------------- Camera --------------------
#declare CamLoc  = <3.6, 2.25, -5.9>;
#declare CamLook = <0.0, 1.05, 0.15>;

camera {
  location CamLoc
  look_at  CamLook
  angle 36
  right x*image_width/image_height
  aperture 0.14
  blur_samples 9
  focal_point <0.0, 1.10, 0.15>
  confidence 0.90
  variance 1/256
}

// -------------------- Lighting (studio) --------------------
light_source {
  < 7.5, 9.0, -7.0>
  color srgb <1.00, 0.98, 0.95>*1.20
  area_light <2.2,0,0>, <0,0,2.2>, 6, 6
  adaptive 1 jitter
}

light_source {
  <-7.0, 5.5, -2.0>
  color srgb <0.75, 0.86, 1.00>*0.55
  area_light <1.8,0,0>, <0,1.4,0>, 5, 4
  adaptive 1 jitter
}

light_source {
  <0.0, 7.5, 6.0>
  color srgb <1,1,1>*0.30
  area_light <2.6,0,0>, <0,1.5,0>, 5, 4
  adaptive 1 jitter
}

light_source { <0, 10, 0> color srgb <1,1,1>*0.10 shadowless }

// -------------------- Atmosphere --------------------
fog {
  fog_type 2
  distance 22
  color srgb <0.94, 0.95, 0.98>
  fog_alt 1.20
  turbulence 0.0
}

// -------------------- Environment reflection dome --------------------
sphere {
  <0,1.2,0>, 80
  hollow
  no_shadow
  texture {
    pigment {
      gradient y
      color_map {
        [0.00 color srgb <0.88,0.90,0.95>]
        [0.45 color srgb <0.98,0.99,1.00>]
        [1.00 color srgb <0.92,0.94,0.98>]
      }
      scale 18
      translate <0,-4,0>
    }
    finish { diffuse 0 emission 0.85 }
  }
}

// -------------------- Finishes --------------------
#declare Fin_MatteRubber = finish {
  diffuse 0.92
  specular 0.10
  roughness 0.08
  reflection { 0.00, 0.04 fresnel on }
  conserve_energy
}

#declare Fin_SatinPaint = finish {
  diffuse 0.70
  specular 0.35
  roughness 0.030
  reflection { 0.03, 0.12 fresnel on }
  conserve_energy
}

#declare Fin_MetalBrushed = finish {
  diffuse 0.10
  metallic
  specular 0.85
  roughness 0.020
  reflection { 0.18, 0.58 fresnel on }
  conserve_energy
}

#declare Fin_StonePolish = finish {
  diffuse 0.82
  specular 0.22
  roughness 0.045
  reflection { 0.02, 0.12 fresnel on }
  conserve_energy
}

// -------------------- Textures / Materials --------------------
#declare Mat_MarblePlinth =
texture {
  pigment {
    marble
    color_map {
      [0.00 color srgb <0.94,0.94,0.95>]
      [0.30 color srgb <0.85,0.86,0.88>]
      [0.55 color srgb <0.98,0.98,0.99>]
      [0.78 color srgb <0.84,0.85,0.88>]
      [1.00 color srgb <0.97,0.97,0.98>]
    }
    scale 0.55
    turbulence 0.40
  }
  normal {
    average
    normal_map {
      [1 bumps 0.12 scale 0.010]
      [1 wrinkles 0.18 scale 0.040]
    }
  }
  finish { Fin_StonePolish }
}

#declare Mat_CharcoalRubber =
texture {
  pigment {
    bozo
    color_map {
      [0.00 color srgb <0.07, 0.08, 0.09>]
      [0.45 color srgb <0.10, 0.11, 0.13>]
      [1.00 color srgb <0.05, 0.06, 0.07>]
    }
    scale 0.28
  }
  normal {
    average
    normal_map {
      [1 ripples 0.10 scale 0.20]
      [1 bumps   0.40 scale 0.020]
    }
  }
  finish { Fin_MatteRubber }
}

#declare Mat_BrushedCopper =
texture {
  pigment { color srgb <0.87, 0.52, 0.30> }
  normal {
    average
    normal_map {
      [1 wrinkles 0.22 scale <0.030,0.010,0.030>]
      [1 bumps    0.12 scale 0.006]
      [1 ripples  0.08 scale <0.12,0.02,0.12>]
    }
  }
  finish { Fin_MetalBrushed }
}

#declare Mat_AnodizedRed =
texture {
  pigment {
    granite
    color_map {
      [0.00 color srgb <0.60, 0.10, 0.14>]
      [0.35 color srgb <0.86, 0.18, 0.23>]
      [0.70 color srgb <0.72, 0.14, 0.18>]
      [1.00 color srgb <0.92, 0.22, 0.26>]
    }
    scale 0.22
  }
  normal {
    average
    normal_map {
      [1 bumps 0.25 scale 0.012]
      [1 ripples 0.06 scale 0.18]
    }
  }
  finish { Fin_SatinPaint }
}

#declare Mat_GlassCool =
texture {
  pigment { color srgbt <0.72, 0.86, 0.99, 0.90> }
  normal {
    average
    normal_map {
      [1 bumps 0.05 scale 0.012]
      [1 wrinkles 0.04 scale 0.045]
    }
  }
  finish {
    diffuse 0.02
    specular 0.92
    roughness 0.004
    reflection { 0.10, 0.42 fresnel on }
    conserve_energy
  }
}

#declare Mat_Floor =
texture {
  pigment {
    pigment_pattern { crackle metric 2.0 offset 0.15 }
    color_map {
      [0.00 color srgb <0.93,0.94,0.97>]
      [0.70 color srgb <0.97,0.98,1.00>]
      [1.00 color srgb <0.90,0.92,0.95>]
    }
    scale 1.9
  }
  normal {
    average
    normal_map {
      [1 bumps 0.08 scale 0.020]
      [1 wrinkles 0.05 scale 0.10]
    }
  }
  finish {
    diffuse 0.86
    specular 0.12
    roughness 0.06
    reflection { 0.01, 0.07 fresnel on }
    conserve_energy
  }
}

#declare Mat_Backdrop =
texture {
  pigment {
    gradient y
    color_map {
      [0.00 color srgb <0.90,0.92,0.96>]
      [0.55 color srgb <0.98,0.99,1.00>]
      [1.00 color srgb <0.93,0.95,0.98>]
    }
    scale 6
    translate <0,-1.2,0>
  }
  normal { bumps 0.03 scale 0.20 }
  finish { diffuse 0.96 specular 0.04 roughness 0.12 }
}

// -------------------- Geometry (precise fits) --------------------
#declare PlinthW = 2.40;
#declare PlinthD = 2.00;
#declare PlinthH = 0.55;

#declare PlinthTopY = PlinthH;

#declare TopDiscR = 0.95;
#declare TopDiscH = 0.12;
#declare TopDiscBottomY = PlinthTopY;
#declare TopDiscTopY = TopDiscBottomY + TopDiscH;

#declare RingOuterR = 0.78;
#declare RingInnerR = 0.60;
#declare RingH = 0.14;
#declare RingBottomY = TopDiscTopY;
#declare RingTopY = RingBottomY + RingH;

#declare SphereR = 0.55;
#declare SphereCenter = <0, RingTopY + SphereR, 0>;

#declare CubeSize = 0.72;
#declare CubeHalf = CubeSize/2;
#declare CubeBottomY = RingTopY;
#declare CubeCenter = <0.0, CubeBottomY + CubeHalf, 0.95>;

#declare ArcOuterR = 1.55;
#declare ArcInnerR = 1.35;
#declare ArcThickness = 0.18;
#declare ArcCenter = <0, 1.35, 0.55>;

// -------------------- Floor --------------------
plane { y, 0 texture { Mat_Floor } }

// -------------------- Cyclorama backdrop (curved sweep) --------------------
union {
  // rear wall plane (for distant continuation)
  plane { z, 3.6 texture { Mat_Backdrop } }

  // curved sweep: a thin cylindrical section clipped to a vertical panel
  difference {
    cylinder { <0,0,3.6>, <0,3.0,3.6>, 2.2 }
    cylinder { <0,0,3.6>, <0,3.0,3.6>, 2.05 }
    plane { z, 3.6 inverse }
    plane { x,  2.6 }
    plane { x, -2.6 inverse }
    plane { y, 0 inverse } // remove below floor
  }
  texture { Mat_Backdrop }
}

// -------------------- Plinth (marble) --------------------
box {
  <-PlinthW/2, 0, -PlinthD/2>, <PlinthW/2, PlinthH, PlinthD/2>
  texture { Mat_MarblePlinth }
}

// -------------------- Top Disc (charcoal rubberized) --------------------
cylinder {
  <0, TopDiscBottomY, 0>, <0, TopDiscTopY, 0>, TopDiscR
  texture { Mat_CharcoalRubber }
}

// -------------------- Ring (brushed copper) --------------------
difference {
  cylinder { <0, RingBottomY, 0>, <0, RingTopY, 0>, RingOuterR }
  cylinder { <0, RingBottomY-0.001, 0>, <0, RingTopY+0.001, 0>, RingInnerR }
  texture { Mat_BrushedCopper }
}

// -------------------- Glass Sphere --------------------
sphere {
  SphereCenter, SphereR
  texture { Mat_GlassCool }
  interior { ior 1.48 caustics 0.6 }
}

// -------------------- Red Cube (anodized) --------------------
box {
  <-CubeHalf, CubeBottomY, 0.95-CubeHalf>, <CubeHalf, CubeBottomY+CubeSize, 0.95+CubeHalf>
  texture { Mat_AnodizedRed }
  rotate <0, 18, 0>
}

// -------------------- Large Arc (charcoal) --------------------
difference {
  torus { ArcOuterR, ArcThickness }
  torus { ArcInnerR, ArcThickness+0.001 }
  texture { Mat_CharcoalRubber }
  rotate <90, 0, 0>
  translate ArcCenter
}

// -------------------- Copper Frame (thin rods) --------------------
#declare RodR = 0.03;
#declare FrameZ = -0.85;
#declare FrameX = 1.15;
#declare FrameY0 = PlinthTopY;
#declare FrameY1 = 1.85;

cylinder { <-FrameX, FrameY0, FrameZ>, < FrameX, FrameY0, FrameZ>, RodR texture { Mat_BrushedCopper } }
cylinder { <-FrameX, FrameY0, FrameZ>, <-FrameX, FrameY1, FrameZ>, RodR texture { Mat_BrushedCopper } }
cylinder { < FrameX, FrameY0, FrameZ>, < FrameX, FrameY1, FrameZ>, RodR texture { Mat_BrushedCopper } }
cylinder { <-FrameX, FrameY1, FrameZ>, < FrameX, FrameY1, FrameZ>, RodR texture { Mat_BrushedCopper } }