//Nome: Rodrigo de Sousa Serafim da Silva
//RA: 118607
//Laboratório 3

// ======================================================================
// CORES E TEXTURAS

background{ color rgb < 0.75, 0.80, 0.85 > }

#declare tx_plastico = 
  texture{
    pigment{ color rgb < 0.10, 0.80, 1.00 > }
    finish{ diffuse 0.8 ambient 0.1 specular 0.5 roughness 0.005 }
  }

#declare tx_fosca = 
  texture{
    pigment{ color rgb < 1.00, 0.80, 0.10 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

#declare tx_espelho = 
  texture{
    pigment{ color rgb < 1.00, 0.85, 0.30 > }
    finish{ diffuse 0.2 reflection 0.7*< 1.00, 0.85, 0.30 > ambient 0.1 }
  }

#declare tx_vidro = 
  texture{
    pigment{ color rgb < 0.85, 0.95, 1.00 > filter 0.70 }
    finish{ diffuse 0.03 reflection 0.25 ambient 0.02 specular 0.25 roughness 0.005 }
  }


#declare tx_xadrez =
  texture{
    pigment{ checker color rgb < 0.10, 0.32, 0.60 >, color rgb < 1.00, 0.97, 0.90 > }
    finish{ diffuse 0.9 ambient 0.1 }
    scale 2.0
  }



	

// ======================================================================
// DESCRIÇÃO DA CENA 

#declare raio = 2.000;

// Partes da cena:
  
#declare bolinha = 
  sphere{ < 0,0,0 >, 0.60 }
 
#declare bolota = 
  sphere{ < 0,0,0 >, 1.50 }
 
#declare bola =
  sphere{
    < 0.00, 0.00, 0.00 >, raio 
    texture{ tx_plastico }
  }
  
#declare pino = 
  cylinder{
    < -2.00, +2.00, -1.00 >,
    < +2.00, -2.00, +1.00 >,
    0.75
    texture{ tx_fosca }
  }
  
#declare furo = 
  cylinder{
    < -1.00, -2.00, -2.00 >,
    < +1.00, +2.00, +2.00 >,
    0.75*raio
    texture{ tx_fosca }
  }



#include "eixos.inc"

#declare CC = 6.2832; // = 2pi

#macro interpolalin(t0,v0,t1,v1,tt)

	#local r = (tt-t0)/(t1-t0);
	#local s = 1-r;
	#local vv= s*v0 + r*v1;
	vv
#end

#macro arcobezier(t0,t1,A,B,C,D,tt)
	#local AB = interpolalin(t0,A,t1,B,tt);
	#local BC = interpolalin(t0,B,t1,C,tt);
	#local CD = interpolalin(t0,C,t1,D,tt);

	#local ABC = interpolalin(t0,AB,t1,BC,tt);
	#local BCD = interpolalin(t0,BC,t1,CD,tt);

	#local ABCD = interpolalin(t0,ABC,t1,BCD,tt);
	ABCD
#end

#macro esfera_quadrado2(nn,rr,dd)
union{

	#local a = sphere{<0,0,0>,rr texture {tx_fosca}}

	#local tt=0;
	#while (tt<1)
      #if(tt< 0.25)
         object{a translate interpolalin(0,<0,0,0>,0.25,<0,10,0>,tt)}
      #else
      #if(tt<0.5)
         object{a translate interpolalin(0.25,<0,10,0>,0.5,<0,10,10>,tt)}
      #else
      #if(tt<0.75)
         object{a translate interpolalin(0.5,<0,10,10>,0.75,<0,0,10>,tt)}
      #else
         object{a translate interpolalin(0.75,<0,0,10>,1,<0,0,0>,tt)}
      #end
      #end
      #end
      #local tt = tt + 1/dd;
  #end
}
#end

//poligono regular de n lados onde cada lado é alterado pelo arco de bezier
#macro esfera_poligono(nn,rr,dd)
union{

	#local a = sphere{<0,0,0>,rr texture {tx_fosca}}

	#local tt=0;
	#while (tt<1)
		#local t1 = int(tt*nn)/nn;
		#local t2 = (int(tt*nn)+1)/nn;
		#local tt1 = <0,10*cos(CC*t1),10*sin(CC*t1)>;
		#local tt2 = <0,10*cos(CC*t2),10*sin(CC*t2)>;
      //object{a translate arcobezier(t1,t2,tt1,<0,5*cos(CC*tt),0>,<0,0,5*sin(CC*tt)>,tt2,tt)}
		//B e C escolhidos ao acaso
		object{a translate arcobezier(t1,t2,tt1,<0,0,5*sin(CC*tt)>,<0,5*cos(CC*tt),0>,tt2,tt)}
		//object{a translate arcobezier(0,0.25,<0,0,0>,<0,0,5>,<0,5,5>,<0,10,0>,tt)}

      #local tt = tt + 1/dd;
  #end
}
#end

#macro esfera_poligono_suave(nn,rr,dd)
union{

	#local a = sphere{<0,0,0>,rr texture {tx_fosca}}

	#local tt=0;
	#while (tt<1)
		#local t1 = int(tt*nn)/nn;
		#local t2 = (int(tt*nn)+1)/nn;
		#local t0 = (int(tt*nn)-1)/nn;
		#local tt1 = <10*sin(2*CC*tt),10*cos(CC*t1),10*sin(CC*t1)>;
		#local tt2 = <10*sin(2*CC*tt),10*cos(CC*t2),10*sin(CC*t2)>;

		#local A1 = t1;
		//#local VEA = <0,-2,2>;
		//#local A2 = <0,

      //object{a translate arcobezier(t1,t2,tt1,<0,5*cos(CC*tt),0>,<0,0,5*sin(CC*tt)>,tt2,tt)}
		//B e C escolhidos ao acaso
		object{a translate arcobezier(t1,t2,tt1,<10*sin(2*CC*tt),0,5*sin(CC*tt)>,<10*sin(2*CC*tt),5*cos(CC*tt),0>,tt2,tt)}
		//object{a translate arcobezier(0,0.25,<0,0,0>,<0,0,5>,<0,5,5>,<0,10,0>,tt)}

      #local tt = tt + 1/dd;
  #end
}
#end

//object{esfera_quadrado2(1,0.2,1000)}
//object{esfera_poligono_suave(9,0.2,2000)}
object{esfera_poligono(9,0.2,2000)}

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 0.00 >;
#declare raio_cena = 30;
#declare dir_camera = < 14.00, 7.00, 4.00 >;
#declare dist_camera = 5*raio_cena;
#declare intens_luz = 1.20;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)