#declare DISPLACEMENT = 0.5 - 0.5 * cos(radians(clock));
// #declare DISPLACEMENT = 0.5 - 0.5 * cos(radians(180));
#declare HUB  = cylinder { <0,1.02,0>, <0,0.96,0>, 0.05 }
#declare LEFT =
 prism {
  cubic_spline -0.01, 0.5, 6,
  <-6,2> <6,2> <0,-0.6> /// middle coord on this line must match...
  <-6,2> <6,2> <0,-0.6> /// middle coord on this line
  scale     0.048
  rotate    <90,0,-5 - 65 * DISPLACEMENT>
  translate <0,1  -  0.53 * DISPLACEMENT,0>
 }
#declare RIGHT = 
union {
 object { LEFT scale <-0.999,0.999,-0.9> }
 object { LEFT scale <-1,1,-1> pigment { rgbt <0,0,0,0.75> } }
}
#declare SCISSOR =
 union {
  object { LEFT }
  object { RIGHT }
  cylinder { <0,1,0.025>, <0,1,-0.025>, 0.02 pigment { rgbt <0,0,0,0.75> }
             translate <0,-0.54 * DISPLACEMENT,0> }
  object { HUB pigment { rgb 0.0 } translate <0,      - 0.25 * DISPLACEMENT,0> rotate <0,0,18> }
  object { HUB pigment { rgb 0.3 } translate <0,-0.07 - 0.77 * DISPLACEMENT,0> rotate <0,0,18> }
  no_shadow
 }
#declare HALF =
 union {
  object { SCISSOR }
  object { SCISSOR rotate <0,0,36> }
  object { SCISSOR rotate <0,0,72> }
  object { SCISSOR rotate <0,0,108> }
  object { SCISSOR rotate <0,0,144> }
 }
#declare RING =
 union {
  object { HALF }
  object { HALF rotate <0,0,180> }
 }
#declare OBLIQUE = object { RING rotate <degrees(atan(-2)),0,0> }
object { OBLIQUE rotate <0,0,  0> pigment { rgb <0.8,0.5,1.0> } }
object { OBLIQUE rotate <0,0, 72> pigment { rgb <1.0,0.3,0.3> } }
object { OBLIQUE rotate <0,0,144> pigment { rgb <0.8,0.8,0.0> } }
object { OBLIQUE rotate <0,0,216> pigment { rgb <0.0,0.8,0.5> } }
object { OBLIQUE rotate <0,0,288> pigment { rgb <0.3,0.5,1.0> } }
object { RING pigment { rgb 0.7 } }
plane  { <0,0,1>, 0.02 pigment { rgbt <2,2,2,0.7> } }

background      { rgbt <1,1,1,0> }
global_settings { ambient_light 8 }
light_source    { <0,1,1> color 0.5 parallel
                  area_light <5,0,0>, <0,0,5>, 5, 5 adaptive 1 jitter }
camera {
 orthographic
 right    x * image_width / image_height
 sky      <0,1,0>
 location <0,0,5.5>
 look_at  <0,0,0>
 angle    21.5
}