; Tutorial 6: Segments

; An animation can have "segments."  For example, the command
; "animate 30 50" creates an animation with a segment that
; contains 31 frames, followed by a segment that contains
; 51 frames.  The segments are "spliced" together because
; the final frame of the first segment is the same as
; the first frame of the second segment.  This file defines
; an animation with four segments.

animate 90 90 90 90

define flap [
   square scale 5 3
          xtranslate 5
 ]
 
define paddles [
   hsb 0 1 1  ; Gives a color by hue, saturation, brightness.
   flap yrotate 0:0:0:0:360
   hsb 0.125 1 1
   flap yrotate 0:45:45:45:360      ; Eight flaps rotate
   hsb 0.25 1 1                     ; into position during
   flap yrotate 0:90:90:90:360      ; the first segment of
   hsb 0.375 1 1                    ; the animation.  After
   flap yrotate 0:135:135:135:360   ; that, the y-rotation of
   hsb 0.5 1 1                      ; each flap remains
   flap yrotate 0:180:180:180:360   ; constant for the next
   hsb 0.625 1 1                    ; two segments.  Then
   flap yrotate 0:225:225:225:360   ; all the flaps rotate back
   hsb 0.75 1 1                     ; to their original
   flap yrotate 0:270:270:270:360   ; positions.
   hsb 0.875 1 1
   flap yrotate 0:305:305:305:360
]   
 
 
background black
 
paddles 
   yrotate 0:0:360:720:720
   xrotate 15:15:15:375:375
; The entire paddles object rotates around the y-axis
; during each of the second and third segments.  In the
; third segment, the object is ALSO rotating about the
; x-axis.  (There is an extra, constant 15 degree rotation
; about the x-axis to make the object easiest to view.