def line(x, y, xx, yy): # (x,y) to (xx,yy)
if x > xx:
t = x # Swap co-ordinates if necessary
x = xx
xx = t
t = y
y = yy
yy = t
if xx - x == 0: # Avoid div by zero if vertical
vert(x, min(y, yy), max(y, yy))
else: # Draw line one dot at a time L to R
n = xx - x + 1
grad = float((yy - y) / (xx - x)) # Calculate gradient
for i in range(n):
y3 = y + int(grad * i)
display.pixel(x + i, y3) # One dot at a time
RealStart = -2 * zoom
RealEnd= 1 * zoom
ImaginaryStart = -1 * zoom
ImaginaryEnd = 1 * zoom
display.clear()
#One of the issues on the video was it was displaying the old images whilst generating the new one
#So added the update below to send a clear screen to the display
display.update()
go = True
while go:
for x in range(0, width):
for y in range(0, height):
c = complex(RealStart + (x / width) * (RealEnd - RealStart),ImaginaryStart + (y / height) * (ImaginaryEnd - ImaginaryStart))
m = mandelbrot(c)
colour = 255 - int(m * 255 / iterations)
display.set_pen(colour,0,155)
display.pixel(x, y)
#uncomment this line if you want to see the progress the plot has made if you are not updating the screen every x
#print(x)
#if you put the display update here it will update every x line
display.update()
#if you put the display update here it will update at the end of processing (maybe 2 to 3 minutes in)
#display.update()
go = False
def horiz(l, t, r): # left, top, right
n = r - l + 1 # Horizontal line
for i in range(n):
display.pixel(l + i, t)
def vert(l, t, b): # left, top, bottom
n = b - t + 1 # Vertical line
for i in range(n):
display.pixel(l, t + i)
def display_pixel(self, x, y):
display.pixel(x, y)