#declare antigrav =
    union {
	blob {
	    threshold 0.5625
	    sphere {
		<0, 0, 0>, 1, strength 1
		scale <50, 40, 10>
		translate <0, 40, 20>
	    }
	    sphere {
		<0, 0, 0>, 1, strength 1
		scale <50, 80, 10>
		translate <0, 40, 10>
	    }
	    sphere {
		<0, 0, 0>, 1, strength 1
		scale <50, 100, 10>
		translate <10, 50,  0>
	    }
	    sphere {
		<0, 0, 0>, 1, strength 1
		scale <50, 80, 10>
		translate <0, 40, -10>
	    }
	    sphere {
		<0, 0, 0>, 1, strength 1
		scale <50, 40, 10>
		translate <0, 40, -20>
	    }
	    sphere {
		<0, 0, 0>, 1, strength 1
		scale <50, 10, 50>
		translate <0, 40,  0>
		texture { pigment { color White }}
	    }
	    texture { pigment { color White }}
	}
	difference {
	    box {
		<40, 0, -30>
		<0, 100, 30>
	    }
	    cone {
		<0, 0, -30.1>, 1
		<0, 0,  30.1>, 1
		scale <40, 100, 1>
		translate <40, 100, 0>
	    }
	    texture { pigment { color Blue }}
	}
    }

