// Exemplo de arquivo de descricao de cena para POV-ray
// Last edited on 2010-03-04 15:44:01 by stolfi

// ======================================================================
// 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 


#macro interpola(t0,v0,t1,v1,tt)
    #local ss= (tt-t0)/(t1-t0);
    #local rr= 1-ss;
    (rr*v0 + ss*v1)
#end

#macro interpola4(t0,v0,v1,v2,v3,t3,tt)
    #local v01 = interpola(t0,v0,t3,v1,tt);
    #local v12 = interpola(t0,v1,t3,v2,tt);
    #local v23 = interpola(t0,v2,t3,v3,tt);
    #local v012 = interpola(t0,v01,t3,v12,tt);
    #local v123 = interpola(t0,v12,t3,v23,tt);
    interpola(t0,v012,t3,v123,tt)
   // <tt,interpola(t0,v012,t3,v123,tt),0>
#end

#macro grafico(x0,y0,y1,y2,y3,x3,n)
    union {

    #local i = 0;
    #local xx = x0;
    #local delta = (x3-x0)/n ;
    
    #while (i < n)
        
        //#local yy = interpola4(x0,y0,y1,y2,y3,x3,xx);
        object { 
            sphere{
            
                interpola4(x0,y0,y1,y2,y3,x3,xx),0.03
                //< xx, yy, 0 >, 0.03
                
            } 
            texture{ tx_plastico}
        }
        #local xx = xx + delta;
        #local i = i+1;
    #end
    
    }
#end

#macro graficos(y0,y1,y2,y3,y4,y5,y6,y7,y8,x0,x1,x2,x3,x4,n)
 
    union {
        object{ grafico(x0,(y1+y8)/2,y1,y2,(y2+y3)/2,x1,n) }
        object{ grafico(x1,(y2+y3)/2,y3,y4,(y4+y6)/2,x2,n) }
        object{ grafico(x2,(y4+y6)/2,y5,y6,(y6+y7)/2,x3,n) }
        object{ grafico(x3,(y6+y7)/2,y7,y8,(y8+y1)/2,x0,n) }
    }
  
#end
        

#include "eixos.inc"
#include "retalho.inc"

union {
    object{eixos(3.00)}
    
    #local p1 = <0,0,0>;
    #local p2 = <0,0,1>;
    #local p3 = <0,1,0>;
    #local p4 = <0,1,1>;
    #local p5 = <1,1,1>;
    #local p6 = <0,0,-1>;
    #local p7 = <0,-1,0>;
    #local p8 = <-1,0,0>;
    #local p9 = <-1,0,-1>;
    
    object { graficos (p1,p2,p3,p4,p5,p6,p7,p8,p9,0,5,10,15,20,100) translate<0,0,2>}
    
    #local pt1 = (p1+p8)/2; //11
    #local pt2 = p1; //12
    #local pt3 = p2; //13
    #local pt4 = (p2+p3)/2; //14
    #local pt5 = (p2+p3)/2; //21
    #local pt6 = p3; //22
    #local pt7 = p4; //23
    #local pt8 = (p4+p5)/2; //24
    #local pt9 = (p4+p5)/2; //31
    #local pt10 = p5; //32
    #local pt11 = p6; //33
    #local pt12 = (p6+p7)/2; //34
    #local pt13 = (p6+p7)/2;
    #local pt14 = p7;
    #local pt15 = p8;
    #local pt16 = (p1+p8)/2;
    
    #local p1 = <0,2,0>;
    #local p2 = <2,0,1>;
    #local p3 = <2,1,0>;
    #local p4 = <2,1,1>;
    #local p5 = <1,1,1>;
    #local p6 = <2,0,-1>;
    #local p7 = <2,-1,0>;
    #local p8 = <2,0,0>;
    #local p9 = <2,0,-1>;
    
    #local apt1 = (p1+p8)/2;
    #local apt2 = p1;
    #local apt3 = p2;
    #local apt4 = (p2+p3)/2;
    #local apt5 = (p2+p3)/2;
    #local apt6 = p3;
    #local apt7 = p4;
    #local apt8 = (p4+p5)/2;
    #local apt9 = (p4+p5)/2;
    #local apt10 = p5;
    #local apt11 = p6;
    #local apt12 = (p6+p7)/2;
    #local apt13 = (p6+p7)/2;
    #local apt14 = p7;
    #local apt15 = p8;
    #local apt16 = (p1+p8)/2;
    
    #local pt4 = (pt4 + apt4) / 2;
    #local apt4 = pt4;
    #local pt8 = (pt8 + apt8)/2;
    #local apt8 = pt8;
    #local pt12 = (pt12 + apt12)/2;
    #local pt16 = (pt16 + apt16)/2;
    
    object {retalho(pt1,pt2,pt3,pt4,pt5,pt6,pt7,pt8,pt9,pt10,pt11,pt12,pt13,pt14,pt15,pt16,0.0000001,tx_plastico,tx_plastico)}
    object {retalho(apt1,apt2,apt3,apt4,apt5,apt6,apt7,apt8,apt9,apt10,apt11,apt12,apt13,apt14,apt15,apt16,0.0000001,tx_plastico,tx_plastico)}
    

    //object { graficos( 1,1,-1,2,3,1,1,-1,2,3,1,1,-1,2,3,1,100 ) }

    //object{ grafico(1,1,-1,4,2,5,100) }
    
    //object{ grafico(0,<0,1,1>,<0,-10,-5>,<0,4,0>,<0,2,0>,15,100) }
}

#include "camlight.inc"
#declare centro_cena = < 0.00, 0.00, 1.00 >;
#declare raio_cena = 5.0;
#declare dir_camera = < 14.00, 7.00, 4.00 >;
#declare dist_camera = 10.0;
#declare intens_luz = 1.00;
camlight(<0,0,1*clock>, raio_cena, dir_camera, dist_camera , z, intens_luz)