Hat Program in Python

[toml_12953]

Here's an example of the infamous Green Hat program I translate for and run on any calculator that has graphics. I also run this in HPPL but it's a lot faster in Python.

PHP Code:

#cas
def pyhat():
  t0 = ticks # Save the current clock count for timing program
  # Black out background
  rect_p(0,0,320,240,rgb(0,0,0))
  # Start program proper
  p=160; q=120
  xp=144; xr=1.5*3.1415927
  yp=56; yr=1; zp=64
  xf=xr/xp; yf=yp/yr; zf=xr/zp
  for zi in range(-q,q+1):
    if zi>=-zp and zi<=zp:
      zt=zi*xp/zp; zz=zi
      xl=int(.5+sqrt(xp*xp-zt*zt))
      # Draw one cross-section of figure
      for xi in range(-xl,xl+1):
        xt=sqrt(xi*xi+zt*zt)*xf; xx=xi
        yy=(sin(xt)+.4*sin(3*xt))*yf
        x1=xx+zz+p
        y1=yy-zz+q
        pixon_p(x1,230-y1,rgb(0,255,0))
        if y1!=0:
          Line_p(x1,230-y1+1,x1,230) # Erase points below current point
  t = ticks-t0
  # Wait for key and print elapsed time
  wait
  print(approx(t/1000)+" seconds")
#end 


[compsystems]

nice graphic, I have presented it to my students =). Although now I am teaching with SmallBasic

Similar image

Source: https://social.msdn.microsoft.com/Forums...smallbasic