// Setimo exercicio de MP004
// Last edited on 2001-06-30 16:09:00 by Marcus Macedo 

background{ color rgb < 0.9, 0.9, 0.9 > }

light_source {
  < 0.00, 6.00, 6.00 >
  color rgb < 1.00, 1.00, 1.00 >
} 

camera {
  location  < 21.00, 7.00, 6.50 >
  right     < -0.60, 0.00, 0.00 >
  up        <  0.00, 0.00, 0.80 >
  sky       <  0.00, 0.00, 1.00 >
  look_at   <  3.00, -2.7, 1.00 >
} 

#declare A01 = <0.2, 2.5, 0>;
#declare A02 = <0, 2.0, 0>;
#declare A03 = <0, 1.3, 0>;
#declare A04 = <0, 0, 0>;

#declare A05 = <0.7, 2.7, 0>;
#declare A06 = <0.7, 2.0, 8>;
#declare A07 = <0.7, 1.3, 1.0>;
#declare A08 = <0.7, 0, 1.0>;

#declare A09 = <2.0, 2.7, 0>;
#declare A10 = <2.0, 2.0, 1.0>;
#declare A11 = <2.0, 1.3, 1.0>;
#declare A12 = <2.0, 0, 1.0>;

#declare A13 = <3.0, 2.7, 0>;
#declare A14 = <3.0, 2.0, 1.0>;
#declare A15 = <3.0, 1.3, 1.0>;
#declare A16 = <3.0, 0, 1.0>;


#declare B01 = <5.8, 2.5, 0>;
#declare B02 = <6.0, 2.0, 0>;
#declare B03 = <6.0, 1.3, 0>;
#declare B04 = <6.0, 0, 0>;

#declare B05 = <5.0, 2.7, 0>;
#declare B06 = <5.0, 2.0, 6>;
#declare B07 = <5.0, 1.3, 1.0>;
#declare B08 = <5.0, 0, 1.0>;

#declare B09 = <4.0, 2.7, 0>;
#declare B10 = <4.0, 2.0, 1.0>;
#declare B11 = <4.0, 1.3, 1.0>;
#declare B12 = <4.0, 0, 1.0>;

#declare B13 = <3.0, 2.7, 0>;
#declare B14 = <3.0, 2.0, 1.0>;
#declare B15 = <3.0, 1.3, 1.0>;
#declare B16 = <3.0, 0, 1.0>;


#declare C01 = <0.2, -2.5, 0>;
#declare C02 = <0, -2.0, 0>;
#declare C03 = <0, -1.3, 0>;
#declare C04 = <0, 0, 0>;

#declare C05 = <0.7, -2.7, 0>;
#declare C06 = <0.7, -2.0, 8>;
#declare C07 = <0.7, -1.3, 1.0>;
#declare C08 = <0.7, 0, 1.0>;

#declare C09 = <2.0, -2.7, 0>;
#declare C10 = <2.0, -2.0, 1.0>;
#declare C11 = <2.0, -1.3, 1.0>;
#declare C12 = <2.0, 0, 1.0>;

#declare C13 = <3.0, -2.7, 0>;
#declare C14 = <3.0, -2.0, 1.0>;
#declare C15 = <3.0, -1.3, 1.0>;
#declare C16 = <3.0, 0, 1.0>;


#declare D01 = <5.8, -2.5, 0>;
#declare D02 = <6.0, -2.0, 0>;
#declare D03 = <6.0, -1.3, 0>;
#declare D04 = <6.0, 0, 0>;

#declare D05 = <5.0, -2.7, 0>;
#declare D06 = <5.0, -2.0, 6>;
#declare D07 = <5.0, -1.3, 1.0>;
#declare D08 = <5.0, 0, 1.0>;

#declare D09 = <4.0, -2.7, 0>;
#declare D10 = <4.0, -2.0, 1.0>;
#declare D11 = <4.0, -1.3, 1.0>;
#declare D12 = <4.0, 0, 1.0>;

#declare D13 = <3.0, -2.7, 0>;
#declare D14 = <3.0, -2.0, 1.0>;
#declare D15 = <3.0, -1.3, 1.0>;
#declare D16 = <3.0, 0, 1.0>;

#declare branco = < 0.90, 0.90, 0.90 >
 
#declare tx_prata =
  texture {
    pigment { rgb branco }
    finish { 
      ambient 0.05 diffuse 0.05
      reflection 0.85*branco
      specular 0.20 roughness 0.05
    }
  }

#declare chao_xadrez =
  plane { z, -1 pigment { checker < 0, 0, 0 >, < 1, 1, 1 > } }

#declare patchA =
  bicubic_patch {
    type 1
    flatness 0.001
    u_steps 5
    v_steps 5
    A01, A02, A03, A04,
    A05, A06, A07, A08,
    A09, A10, A11, A12,
    A13, A14, A15, A16
    texture { tx_prata }
  }

#declare patchB =
  bicubic_patch {
    type 1
    flatness 0.001
    u_steps 5
    v_steps 5
    B01, B02, B03, B04,
    B05, B06, B07, B08,
    B09, B10, B11, B12,
    B13, B14, B15, B16
    texture { tx_prata }
  }

#declare patchC =
  bicubic_patch {
    type 1
    flatness 0.001
    u_steps 5
    v_steps 5
    C01, C02, C03, C04,
    C05, C06, C07, C08,
    C09, C10, C11, C12,
    C13, C14, C15, C16
    texture { tx_prata }
  }

#declare patchD =
  bicubic_patch {
    type 1
    flatness 0.001
    u_steps 5
    v_steps 5
    D01, D02, D03, D04,
    D05, D06, D07, D08,
    D09, D10, D11, D12,
    D13, D14, D15, D16
    texture { tx_prata }
  }

#declare cockpitch =
  sphere{ <3.5, 0, 1.0>, 0.6 texture{ pigment{ color rgb <0, 0, 0> }}}

// Aqui está a cena, finalmente:

object { chao_xadrez }
object {
  difference {
    union {
      object { patchA }
      object { patchB }
      object { patchC }
      object { patchD }
    }
    object { cockpitch }
  }
  scale <2, 1, 1>
}

//object {
//union{
//sphere{ A01, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A02, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A03, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A04, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A05, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A06, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A07, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A08, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A09, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A10, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A11, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A12, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A13, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A14, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A15, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ A16, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
// 
//sphere{ B01, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B02, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B03, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B04, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B05, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B06, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B07, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B08, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B09, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B10, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B11, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B12, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B13, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B14, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B15, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ B16, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
// 
//sphere{ C01, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C02, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C03, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C04, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C05, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C06, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C07, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}  
//sphere{ C08, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C09, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C10, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C11, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C12, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C13, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C14, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C15, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ C16, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
// 
//sphere{ D01, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D02, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D03, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D04, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D05, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D06, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D07, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D08, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D09, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D10, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D11, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D12, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D13, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D14, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D15, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//sphere{ D16, 0.1 texture{ pigment{ color rgb <1, 0, 0> }}}
//}
//}