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

background{ color rgb < 0.5, 0.5, 0.85 > }

#declare cor_bola = 
  texture{
    pigment{ color rgb < 0.50, 0.60, 0.40 > }
    finish{ diffuse 0.9 ambient 0.1 }
  }

// ======================================================================
// DESCRICAO DA CENA 

#declare passos = 100;

#declare vet = array[12];


// DECLARACAO DOS PONTOS NO ARRAY

#macro interpolin(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 = interpolin(t0, A, t1, B, tt);
	#local BC = interpolin(t0, B, t1, C, tt);
	#local CD = interpolin(t0, C, t1, D, tt);
	
	#local ABC = interpolin(t0, AB, t1, BC, tt);
	#local BCD = interpolin(t0, BC, t1, CD, tt);
	
	#local ACBD = interpolin(t0, ABC, t1, BCD, tt);
	
	ACBD
#end

#macro curva(p0, p1, v0, v1)
	#local i = 0;
	#while(i <= passos)
		#local p = arcobezier(0, passos, p0, v0, v1, p1, i);
		
		sphere{ p, 0.5 texture{cor_bola}}
		
		#declare i = i+1;
	#end
	//cylinder{ t0, t1, 0.5 texture{cor_bola}}
#end




// Cena final

union{
	curva(<0.5, 5, 0>, <13.5, 9.5, 0>, <3.5, 7, 0>, <11.5, 7, 0>)
	curva(<13.5, 9.5, 0>, <8.5, 6, 0>, <13, 11, 0>, <8, 9.5, 0>)
	curva(<8.5, 6, 0>, <6.5, 11, 0>, <7.5, 0, 0>, <6, 2, 0>)
	curva(<6.5, 11, 0>, <0.5, 5, 0>, <11, 8, 0>, <4, 0.5, 0>)
	
}
/*
#declare i = 0;
union{
	#while(i<11)
		#if (i+3 == 
		curva(vet[i],vet[i+3],vet[i+1],vet[i+2])
		#declare i=i+1;
*/

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 0.00 >;
#declare raio_cena = 20.0;
#declare dir_camera = < 7.00, 7.00, 5.0 >;
#declare dist_camera = 5*raio_cena;
#declare intens_luz = 1.20;
camlight(centro_cena, raio_cena, dir_camera, dist_camera , z, intens_luz)