#declare SpikyBall = merge {

    #local Spike = cone {
        <-0.4, 0, 0>, 0.125
        <-0.8, 0, 0>, 0
    }
    #local ThetaT = 52.9054739861;
    #local ThetaB = 11.5665682674;

    #local HemisphereOfSpikes = merge {
        object { Spike rotate -ThetaT*z }
        object { Spike rotate -ThetaT*z rotate 120*y }
        object { Spike rotate -ThetaT*z rotate 240*y }

        object { Spike rotate -ThetaB*z rotate  60*y }
        object { Spike rotate -ThetaB*z rotate 180*y }
        object { Spike rotate -ThetaB*z rotate 300*y }
    }

    sphere { <0, 0, 0>, 0.5 }
    object { HemisphereOfSpikes }
    object { HemisphereOfSpikes rotate 180*z}
}