emodWiggles.2dpy

def Init():
   # --- author : rickb
   STR.SetFParam0Name("Fade")
   STR.SetFParam1Name("Width")
   STR.SetFParam2Name("Length")
   # --- accent : In Circle
   # --- trigger : Offset

   GLB.xmode = 0
   GLB.slots = STR.GetMaxSlots()

   # mode is used to just return the calculated values so we can run again sorted


def Render(cr):
   # ---- clear screen
   GLB.f0 = STR.F0mix(0,1)
   GLB.f1 = STR.F1mix(1,10)
   GLB.f2 = STR.F2mix(0,60.0)

   GLB.time = STR.FT() + float(STR.IT())
   

   trig = STR.CheckTrigger()
   if trig:
      GLB.xmode = 1 if GLB.xmode==0 else 0
   GLB.acc = STR.CheckAccent()

   # - blank the screen
   cr.set_source_rgba(0,0,0,GLB.f0)
   cr.rectangle(0,0,320,240)
   cr.fill()

   notes = []

   slots = GLB.slots
   if slots == 24:
      tslots=24
      slots=12
      step=4
   else:
      tslots=9
      slots=9
      step=3


   hbuff = 60
   vbuff = 40

   cr.set_line_width(GLB.f1)
   f = 0
   for i in range(tslots):
      (ids,note,velo) = STR.GetSlotData(i)
      if ids != 0:
         cr.save()
         note = note%12
         r = int(note/step)
         c = note%step
         m=1
         if GLB.acc:
            if f == 0:
               x = 160
               y = 120
               m = 10
               f = 1
            else:
               x = 160+80*cos(2*pi*note/11)
               y = 120+80*sin(2*pi*note/11)
         else:
            x = hbuff+c*(320-hbuff*2)/(step-1)
            y = vbuff+r*(240-vbuff*2)/((slots/step)-1)
         
         v = velo/127.

         d = 1 if note%2 else -1

         r,g,b = hsv_to_rgb(v+note/11.,1,1)
         cr.set_source_rgba(b,g,r,1)

         cr.translate(x,y)
         cr.rotate(GLB.time*v*16*d)

         oy = 20 if GLB.xmode else 0


         for i in range(3):
            cr.rotate(2*pi/3.)
            cr.move_to(-20*m,oy)
            cr.curve_to(0,-40*sin(40*GLB.time*v)+oy,0,40*sin(40*GLB.time*v)+oy,m*(GLB.f2+20*v),oy)
            cr.stroke()

         cr.restore()