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PFC #2: Dancing Man
08-23-2017, 06:08 PM
Post: #1
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PFC #2: Dancing Man
Code Snippet: [Select]
' Pentacle Flux Capacitor 2.bas SmallBASIC 0.12.9 (B+=MGA) 2017-08-23
'Pentacle Flux Capacitor 2.bas for QB64 fork 2017-08-23
'translated from: Pentacle Flux Capacitor 2.txt for JB (B+=MGA) 2017-08-23

'Some dancing music for the Dancing figure

'Electric Light Orchestra (ELO) It's a Livin' Thing...
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'  https://www.youtube.com/watch?v=i2d45tOgBl0&index=1&list=RDi2d45tOgBl0
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

RANDOMIZE TIMER
'COMMON SHARED xc, yc, dist, tp(), tp2()
xc = xmax / 2
yc = ymax / 2 + 20
DIM tp(4, 1), tp2(4, 1)

drawPFC
PFC = image(0, 0, xmax, ymax)
while 1
  PFC.show(0, 0)
  DELAY 35  '<< adjust time as needed for your system
  CLS
  DELAY 10
  Lightning xc, yc - 90, xc, yc + 10, 135
  FOR i = 0 TO 4
    xe = tp2(i, 0)
    ye = tp2(i, 1)
    d = rand(.1 * dist, .7 * dist)
    SELECT CASE i
    CASE 0
      Lightning xc, yc - 90, xe, ye, d
      Lightning xc, yc - 90, xe, ye, d
    CASE 1, 4
      Lightning xc, yc - 70, xe, ye, d
    CASE 2, 3
      Lightning xc, yc + 10, xe, ye, d
    END SELECT
  NEXT
  DELAY 30
WEND

SUB drawPFC
  local pRadius, cRadius, a3, r, ao, a, rr, i, xx, yy, dGray, dis, pnt, midx, midy
  'keep global tp(), tp2(), xc, yc, dist
  '3 main points for array tp()
  pRadius = 40: cRadius = 1.5 * pRadius
  a3 = PI * (2 / 5): r = ymax / 2 - cRadius
  ao = PI* (-1 / 2): a = ao
  FOR rr = r TO 0 STEP -10
    midInk 255, 255, 255, 0, 0, 128, rr / r
    Circle xc, yc, rr filled
  NEXT
  FOR i = 0 TO 4
    tp(i, 0) = xc + r * COS(a)
    tp(i, 1) = yc + r * SIN(a)
    FOR rr = cRadius TO pRadius STEP -1
      COLOR RGB((rr - pRadius) / (cRadius - pRadius) * 255 * (cRadius - rr + pRadius) / cRadius, 0, 0)
      xx = tp(i, 0): yy = tp(i, 1)
      Circle xx, yy, rr filled
    NEXT
    a = a + a3
  NEXT
  xx = tp(0, 0): yy = tp(0, 1)
  dist = distance(xx, yy, xc, yc) 'global
  FOR pnt = 0 TO 4
    FOR dis = 0 TO .5 * dist STEP 10
      dGray = 255 * dis / dist
      xx = tp(pnt, 0): yy = tp(pnt, 1)
      midpoint xx, yy, xc, yc, dis / dist, midx, midy
      FOR r = pRadius * (dist - dis) / dist TO 0 STEP -1
        midInk dGray, dGray, dGray, 255, 255, 255, (pRadius - r) / pRadius
        Circle midx, midy, r filled
      NEXT
    NEXT
    tp2(pnt, 0) = midx
    tp2(pnt, 1) = midy
  NEXT
END SUB

SUB Lightning (x1, y1, x2, y2, d)
  local mx, my
  IF d < 5 THEN
    COLOR RGB(225, 225, 245)
    LINE x1, y1, x2, y2
  ELSE
    mx = (x2 + x1) / 2
    my = (y2 + y1) / 2
    mx = mx + -.5 * RND * d * .4 * rand(-2, 2)
    my = my + -.5 * RND * d * .4 * rand(-2, 2)
    Lightning x1, y1, mx, my, d / 2
    Lightning x2, y2, mx, my, d / 2
  END IF
END SUB

SUB midpoint (x1, y1, x2, y2, fraction, byref midx, byref midy)
  midx = (x2 - x1) * fraction + x1
  midy = (y2 - y1) * fraction + y1
END SUB

SUB midInk (r1, g1, b1, r2, g2, b2, fr)
  COLOR RGB(r1 + (r2 - r1) * fr, g1 + (g2 - g1) * fr, b1 + (b2 - b1) * fr)
END SUB

FUNC distance(x1, y1, x2, y2)
  distance = ((x1 - x2) ^ 2 + (y1 - y2) ^ 2) ^ .5
END

FUNC rand(lo, hi)
  rand = INT(RND * (hi - lo + 1)) + lo
END

B += _
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