Stream




9B Do problem 9A, this time with a temporal display of the difference in display area.

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#
import math

def stream2 (y1): 
  for a in range (0, 200):
   y = 200-a-y1
   x1= 200-(int(a/2*math.sin(math.pi/30*a))+y)
   x2 = 200-(int(a/2*math.sin(math.pi/30*a))+y)+int(a/2)
   x3= 200-(int(a/2*math.sin(math.pi/30*a))+y)+int(a/3)
   g.setPixel(x1+1, y, 100)
   g.setPixel(x2, y, 100)
   g.setPixel(x3, y, 100)
   g.pause(1) 
  for a in range (0, 200):
   y = 200-a-y1
   x1= 200-(int(a/2*math.sin(math.pi/30*a))+y)
   x2 = 200-(int(a/2*math.sin(math.pi/30*a))+y)+int(a/2)
   x3= 200-(int(a/2*math.sin(math.pi/30*a))+y)+int(a/3)
   g.setPixel(x1+1, y, 0)
   g.setPixel(x2, y, 0)
   g.setPixel(x3, y, 0)
   g.pause(1)
 
def mountains():
 g.line(76, 200, 0, 114)
 for a in range (76, 200):
  x = a
  y = 200-abs((int(a/3*math.cos(math.pi/50*a))))
  g.setPixel(x, y, 100)
  
mountains ()

def snow (x1, x2, y1, color):
 for a in range(x1, x2):
  x=a
  y=y1-abs((int(8*math.cos(math.pi/14*a))))
  g.setPixel(x, y, color)
def snowmelt():
 snow(56, 88, 185,0)
 snow (112, 134, 180,0)
 snow (160, 188, 160,0)
 snow(66,86,190,100)
 snow(117,132,187,100)
 snow(165,185,175,100)
 g.pause(25)
 snow(66,86,190,0)
 snow(117,132,187,0)
 snow(165,185,175,0)
 snow(67,80,195, 100)
 snow(122,129,194, 100)
 snow(170,180,190,100)
 g.pause(25)
 snow(67,80,195, 0)
 snow(122,129,194, 0)
 snow(170,180,190,0)
 
snow(56, 88, 185,100)
snow (112, 134, 180,100)
snow (160, 188, 160,100)

snowmelt()

stream2 ( 40)