// ==== Standard POV-Ray Includes ====
#include "colors.inc"	// Standard Color definitions
#include "textures.inc"	// Standard Texture definitions

#declare T_WhitePlastic =
	texture {
		pigment { color White }
		finish { ambient 0.2 diffuse 0.9 phong 0.8 phong_size 70 }
	}

#declare Base =
	union {
		box { < -10.0, -(20.3-11.7), -10.0>, < 10.0, 15.0, 10.0> }
		lathe {
			linear_spline
			4,
			< 0.0, -1.5>, < 11.5/2+0.2, -1.5>, < 13.63/2, 0.0>, < 0.0, 0.0>
			translate -(20.3-11.7)*y
		}
	}

#declare Cast1 =
	lathe {
		linear_spline
		6,
		< 0.0, -(20.3-11.7-2)>
		< 3.0, -(20.3-11.7-2)>, //< 2.0, -(20.3-11.7-1)>,
		< 8.5/2, -(20.3-11.7-1)>,
		< 8.5/2, -(20.3-11.7)>,	// If I chaged this Y value, the shadow 
disappeared.
		< 8.5/2+1 , -(20.3-11.7+1.5+1.0)>,
		< 0.0, -(20.3-11.7+1.5+1.0)>
	}


#declare Cast2_1 =
	prism {
		linear_sweep
		linear_spline
		-11, 11,
		5,
		< 1.0, 0.0>,
		< 2.0, -1.6>,
		< -2.0, -1.6>,
		< -1.0, 0.0>,
		< 1.0, 0.0>
		rotate -90*x
	}

#declare Cast2 =
	union {
		object { Cast2_1 }
		object { Cast2_1 rotate 90*y }
		translate -(20.3-11.7)*y
	}

#declare Object_A =
	difference {
		object { Base }
		object { Cast1 translate -0.001*y }	// I added 'traslate -0.001*y' to 
this line second. Then the shadoo appeared. ( The figure 3 )
		//object { Cast1 translate 0.001*y }	// Finally, I chaged translation 
value like this line in order to avoid appearing of the shadow. ( The 
figure 4 )
		object { Cast2 translate -0.001*y }	// At first I added 'translate 
-0.001*y' to this line. ( The figure 2 )
		texture { T_WhitePlastic }
	}

object { Object_A translate 3*y }

light_source { < -50, -120, -80> color White }

camera { location < -40, -60, -20> look_at -5*y angle 20 }