// The celtic symbol 'Triquetra' as an object for the Raytracer POV-Ray.
//
// $Id$
//

#declare Leg1 = difference {
  torus {
    0.95, 0.05  rotate -x*90
    rotate -90.0*x
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <1.0, 0.05, 1.0>
    translate  -0.75*z
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <0.05, 0.05, 0.1>
    rotate 60.0*y
    translate  <-0.857, 0.0, 0.257>
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <0.05, 0.05, 0.1>
    rotate -60.0*y
    translate  <0.857, 0.0, 0.256>
  }
  translate  -0.81*z
}

#declare Leg2 = difference {
  torus {
    0.95, 0.05  rotate -x*90
    rotate -90.0*x
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <1.0, 0.05, 1.0>
    translate  -0.75*z
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <0.05, 0.05, 0.1>
    rotate 60.0*y
    translate  <-0.857, 0.0, 0.257>
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <0.05, 0.05, 0.1>
    rotate -60.0*y
    translate  <0.857, 0.0, 0.256>
  }
  translate  -0.81*z
  rotate <-180.0, 60.0, -180.0>
}

#declare Leg3 = difference {
  torus {
    0.95, 0.05  rotate -x*90
    rotate -90.0*x
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <1.0, 0.05, 1.0>
    translate  -0.75*z
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <0.05, 0.05, 0.1>
    rotate 60.0*y
    translate  <-0.857, 0.0, 0.257>
  }
  box {
    <-1, -1, -1>, <1, 1, 1>
    scale <0.05, 0.05, 0.1>
    rotate -60.0*y
    translate  <0.857, 0.0, 0.256>
  }
  translate  -0.81*z
  rotate <-180.0, -60.0, -180.0>
}

//The circle around the legs
#declare OuterCircle = torus {
    0.6, 0.05  rotate -x*90
    rotate -90.0*x
}

//The final object
#declare Triquetra = merge {
  object { Leg1 }
  object { Leg2 }
  object { Leg3 }
  object { OuterCircle }
  rotate -90*x -1*y
}