// Persistence of Vision Ray Tracer Scene Description File
// File: .pov
// Vers: 3.8
// Desc: demo pigment_pattern
// Date: January 2021
// Auth: TdeG


//These are the image_maps used for the pattern:
#declare p_map2a = pigment {image_map {jpeg "C:/.../DirtRoad_01.jpg" gamma srgb interpolate 2 transmit all 0 } }
#declare p_map2b = pigment {image_map {jpeg "C:/.../DirtRoad_02.jpg" gamma srgb interpolate 2 transmit all 0 } }
#declare p_map2c = pigment {image_map {jpeg "C:/.../DirtRoad_03.jpg" gamma srgb interpolate 2 transmit all 0 } }
#declare p_map2d = pigment {image_map {jpeg "C:/.../DirtRoad_04.jpg" gamma srgb interpolate 2 transmit all 0 } }
#declare n_map2a = normal {bump_map {jpeg "C:/.../DirtRoad_01_bw.jpg" gamma 1 interpolate 2 } }
#declare n_map2b = normal {bump_map {jpeg "C:/.../DirtRoad_02_bw.jpg" gamma 1 interpolate 2 } }
#declare n_map2c = normal {bump_map {jpeg "C:/.../DirtRoad_03_bw.jpg" gamma 1 interpolate 2 } }
#declare n_map2d = normal {bump_map {jpeg "C:/.../DirtRoad_04_bw.jpg" gamma 1 interpolate 2 } }
 
//-----------------------------------------------------------------
//pigments
#declare P_roada = pigment {p_map2a}
#declare P_roadb = pigment {p_map2b}
#declare P_roadc = pigment {p_map2c}

#declare P_roadd = 
pigment {
  average 
  warp {turbulence 2.0}
  pigment_map {
    [0.3 p_map2a scale 10 rotate 10]
    [1.0 p_map2c scale 10]
    [0.7 p_map2d scale 20]
  }
}

//-----------------------------------------------------------------
//normals
#declare N_roada = normal {n_map2a bump_size 15}
#declare N_roadb = normal {n_map2b bump_size 15}
#declare N_roadc = normal {n_map2c bump_size 15}

//-----------------------------------------------------------------
//finish
#declare F_road =
finish {
  specular 0.1
  roughness 0.001
  diffuse  0.3 
  conserve_energy
}

//-----------------------------------------------------------------
//texture
#declare T_road =
texture {uv_mapping
  pigment_pattern {P_roadd scale 0.3 warp {turbulence <0.1, 1.0, 0.1>} }
  texture_map {
    [0.2 pigment {P_roadc scale 0.2} finish {F_road} normal {N_roadc scale 0.2}]
    [0.5 pigment {P_roada scale 0.4 warp {turbulence 0.1}} finish {F_road} normal {N_roada scale 0.4 warp {turbulence 0.1}}]
    [0.8 pigment {P_roadb scale 0.2 warp {turbulence 0.1}} finish {F_road} normal {N_roadb scale 0.2 warp {turbulence 0.1}}]
  }
  scale 1/50
  warp {turbulence <0, 0.2, 0>}
  scale 50
  scale 0.5
}

//-----------------------------------------------------------------
//material
#declare RoadSurf_=
material {
  texture {
    T_road
  }
}