emodRadiate.2dpy

def Init():
   # --- author : rickb
   STR.SetFParam0Name("Fade")
   STR.SetFParam1Name("Bar Thickness")
   STR.SetFParam2Name("White Opacity")
   # --- accent : Full Rings
   # --- trigger : Auto Rotate

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

   # mode is used to just return the calculated values so we can run again sorted
   GLB.rot = 0

def Render(cr):
   # ---- clear screen
   GLB.f0 = STR.F0mix(0,1)
   GLB.f1 = int(STR.F1mix(1,30))
   GLB.f2 = STR.F2mix(0,.50)

   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
   tslots = slots
   if slots == 24:
      tslots=24
      slots=12


   hbuff = 60
   vbuff = 40

   cr.save()
   if GLB.xmode:
      GLB.rot = GLB.rot + .025
   cr.translate(160,120)
   cr.rotate(GLB.rot)
   cr.translate(-160,-120)

   for i in range(tslots):
      (ids,note,velo) = STR.GetSlotData(i)
      if ids != 0:
         note = note%12
         v = velo/127.
         a = 2*pi*note/(slots-1)
         
         cr.set_line_width(1)
         cr.set_source_rgba(1,1,1,GLB.f2)
         cr.move_to(160,120)
         cr.arc(160,120,110,a,a+2*pi/(slots-1))
         cr.close_path()
         cr.stroke()
         
         if slots == 12:
            d = 50+40*sin(5*v*GLB.time*2*pi)
         else:
            d = 10+80*v

         cr.set_line_width(GLB.f1)
         r,g,b = hsv_to_rgb(v+note/11.,1,1)
         cr.set_source_rgba(b,g,r,1)
         if GLB.acc:
            cr.arc(160,120,d,a,a+2*pi)
         else:
            cr.arc(160,120,d,a,a+2*pi/(slots-1))
         cr.stroke()


   cr.restore()