def basic_mandelbrot(x, y):
"""
Calculate and return the RGB colour for a given (x, y) pixel.
:param x: The X coordinate of the pixel.
:param y: The Y coordinate of the pixel.
:return: A tuple (R,G,B) of values 0-255.
"""
# Scale X and Y to the viewport bounded by (X1, Y1) and (X2, Y2).
x = scaled(x, 0, MAX_Y, X1, X2)
y = scaled(y, 0, MAX_Y, Y1, Y2)
# Set the initial value z0 and the constant c.
z = complex(0, 0)
c = complex(x, y)
# Count the number of iterations to escape an arbitrary "bound".
for i in range(MAX_ITERATION):
z = z*z + c
if abs(z) > 4:
break
else:
# We haven't escaped in time - return a default colour of black.
return 0, 0, 0
# Return a color based on this escape time.
return color(i)
def basic_mandelbrot(x, y):
"""
Calculate and return the RGB colour for a given (x, y) pixel.
:param x: The X coordinate of the pixel.
:param y: The Y coordinate of the pixel.
:return: A tuple (R,G,B) of values 0-255.
"""
# Scale X and Y to the viewport bounded by (X1, Y1) and (X2, Y2).
x = scaled(x, 0, MAX_Y, X1, X2)
y = scaled(y, 0, MAX_Y, Y1, Y2)
# Count the number of iterations to escape an arbitrary "bound".
i = count_its(x, y, MAX_ITERATION)
# Return a color based on this escape time.
if i == MAX_ITERATION:
return 0, 0, 0
return color(i)
