#include "colors.inc" 
#include "stones.inc"

//  Ediçao do exercicio da quarta aula 
//           Propaganda

background{ color rgb < 1.0, 1.0, 1.0> }
light_source{
        < 8.0, 9.0, 7.0 >
        color rgb < 1.0, 0.6, 0.7 >
} 

light_source{
        < 0, -9.0, 0 >
        color rgb < 1.0, 0.6, 0.7 >
}

camera {
        location < 1.0, 20, 3.0 >
	sky <0,0,1>
        look_at < 5, 0, 0 >
}                                   


#declare azul = 
  texture {
  	pigment { color Blue }
  }


#declare amarelo = 
  texture {
      pigment {
	wood
        color_map {
          [0.0 color White]
          [0.9 color Yellow]
          [1.0 color Black]
        }
        turbulence 0.05
        scale <0.2, 0.3, 1>
      }
      finish { phong 1 }
    }


#declare logo =
	 text { ttf "arial.ttf" "LSM" 1, 0
	 	texture { azul }
		scale < 1.5, 1.5, 1.5 >
		rotate < 90, 0, 0>
		translate < 0, 0, -1.0>
	  }

#declare prisma1 =
    prism {
linear_sweep
       linear_spline
	1,
        0.5,
        4
	<0,0>, <4,0>, <2,1.2>,<0,0>
       texture { amarelo }
}   

#declare prisma2 =
    prism {
       linear_sweep
       linear_spline
       2.5,
       0.5,
       4
       <0,0>, <4,0>, <2,1.2>,<0,0>
       texture { amarelo }
    }

#declare prisma =
	difference{
		object { prisma1 }
		object { prisma2 
			scale < 0.6, 1.0, 0.6 >
			translate < 0.8, -0.2, 0.4 >
		}
	}

#declare logotipo =
	union {
	     object {prisma}  

		object{logo
        		translate < 0.4, 1, 0.0 >
		}	 
	}

#declare f = mod( clock*4,1 )

#declare altura = ( f<0.5 ? 10*f : 10*(1-f) )

// desenhando meu logotipo dançante

object { logotipo
	scale ( clock>0.8 ? 10*(clock-0.8) : (3+altura)/8 )
	translate <10*clock,0,f>
}