#Inventor V2.0 ascii
# Bush robot oscillating between left- and right-handed
# fractal surface fill, passing through tight clumping
# pose between fill poses   Level 6 bush.

BaseColor{ rgb 1 .85 .45 }

# set whichChild to 8 for level 6 bush, to 7 for level 5 twig

Switch { whichChild 8

DEF SPRIG-0  # Expensive cylindrical branch, with spherical end cap
  Separator {
    Separator {
      Transform { translation 0 -1 0 }
      Transform{ scaleFactor .1 1 .1}
      Cylinder{}
      }
    Transform { scaleFactor .1 .1 .1 }
    Sphere{}
  }

DEF SPRIG-0b  # Cheap hexagonal branch, with triangular open ends
  Separator {
    Coordinate3 {
        point [   0.15   -2.0    0.0,     # 0
                  0.075   0.0    0.13,   # 4
                 -0.075  -2.0    0.13,   # 1
                 -0.15    0.0    0.0,     # 3
                 -0.075  -2.0   -0.13,   # 2
                  0.075   0.0   -0.13,   # 5 
                  0.15   -2.0    0.0,     # 0
                  0.075   0.0    0.13,   # 4
               ]
    }
    TriangleStripSet {}    
  }

DEF SPRIG-0c  # Cheaper quadrilateral branch, with knife edges
  Separator {
    Coordinate3 {
        point [   .15   -2    0,   # 0
                   0    0   .15,   # 1
                 -.15   -2    0,   # 2
                   0    0  -.15,   # 3
                  .15   -2    0,   # 0
                   0    0   .15,   # 1
               ]
    }
    TriangleStripSet {}    
  }


DEF SPRIG-1
Separator {
  
  USE SPRIG-0c

  Pendulum { rotation0 0 1 0 1.57 rotation1 0 1 0 -1.57 speed .07 }

  Separator {
    Pendulum { rotation0 0 0 1 .6 rotation1 0 0 1 .3 speed .14 }  # Branch A
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-0c
    }
  
  Separator {
    Pendulum { rotation0 .866 0 -.5 .6 rotation1 .866 0 -.5 .3  speed .14 }  # Branch B
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-0c
    }
  
  Separator {
    Pendulum { rotation0 -.866 0 -.5 .6 rotation1 -.866 0 -.5 .3  speed .14 }  # Branch C
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-0c
    }
  }


DEF SPRIG-2
Separator {
  
  USE SPRIG-0b

  Pendulum { rotation0 0 1 0 1.57 rotation1 0 1 0 -1.57 speed .07 }

  Separator {
    Pendulum { rotation0 0 0 1 .5 rotation1 0 0 1 .4  speed .14 }  # Branch A
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-1
    }
  
  Separator {
    Pendulum { rotation0 .866 0 -.5 .5 rotation1 .866 0 -.5 .4  speed .14 }  # Branch B
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-1
    }
  
  Separator {
    Pendulum { rotation0 -.866 0 -.5 .5 rotation1 -.866 0 -.5 .4  speed .14 }  # Branch C
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-1
    }
  }

DEF SPRIG-3
Separator {
  
  USE SPRIG-0b

  Pendulum { rotation0 0 1 0 1.57 rotation1 0 1 0 -1.57 speed .07 }

  Separator {
    Pendulum { rotation0 0 0 1 .4 rotation1 0 0 1 .5  speed .14 }  # Branch A
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-2
    }
  
  Separator {
    Pendulum { rotation0 .866 0 -.5 .4 rotation1 .866 0 -.5 .5  speed .14 }  # Branch B
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-2
    }
  
  Separator {
    Pendulum { rotation0 -.866 0 -.5 .4 rotation1 -.866 0 -.5 .5  speed .14 }  # Branch C
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-2
    }
  }


DEF SPRIG-4
Separator {

  USE SPRIG-0

  Pendulum { rotation0 0 1 0 1.57 rotation1 0 1 0 -1.57 speed .07 }

  Separator {
    Pendulum { rotation0 0 0 1 .3 rotation1 0 0 1 .6  speed .14 }  # Branch A
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-3
    }
  
  Separator {
    Pendulum { rotation0 .866 0 -.5 .3 rotation1 .866 0 -.5 .6  speed .14 }  # Branch B
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-3
    }
  
  Separator {
    Pendulum { rotation0 -.866 0 -.5 .3 rotation1 -.866 0 -.5 .6  speed .14 }  # Branch C
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-3
    }
  }

DEF SPRIG-5
Separator {

   USE SPRIG-0

  Pendulum { rotation0 0 1 0 1.57 rotation1 0 1 0 -1.57 speed .07 }

  Separator {
    Pendulum { rotation0 0 0 1 .2 rotation1 0 0 1 .7  speed .14 }  # Branch A
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-4
    }
  
  Separator {
    Pendulum { rotation0 .866 0 -.5 .2 rotation1 .866 0 -.5 .7  speed .14 }  # Branch B
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-4
    }
  
  Separator {
    Pendulum { rotation0 -.866 0 -.5 .2 rotation1 -.866 0 -.5 .7  speed .14 }  # Branch C
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-4
    }
  }


DEF SPRIG-6
Separator {

  BaseColor{ rgb .85 1 .45 }

  Separator {
    Transform {scaleFactor .1 .1 .1}
    Sphere {}
    }

  Pendulum { rotation0 0 1 0 1.57 rotation1 0 1 0 -1.57 speed 0 }

  Separator {
    Pendulum { rotation0 0 0 1 .1 rotation1 0 0 1 .8  speed .14 }  # Branch A
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-5
    }
  
  Separator {
    Pendulum { rotation0 .866 0 -.5 .1 rotation1 .866 0 -.5 .8  speed .14 }  # Branch B
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-5
    }
  
  Separator {
    Pendulum { rotation0 -.866 0 -.5 .1 rotation1 -.866 0 -.5 .8  speed .14 }  # Branch C
    Transform { scaleFactor 0.577 0.577 0.577 }
    Transform { translation 0 2 0 }
    USE SPRIG-5
    }
  }

}