# fractal images
################################################################################
import fractal
pixels = fractal.mandelbrot(448, 256)
print(pixels)
import bmp
bmp.write_grayscale('mandel.bmp', pixels)
################################################################################
'''
@author: Steven
'''
import fractal
import math
import math.pi as pi
#iteration= 400,points = 1920, prec=.0000002,x=-1.711114+.5,y=-0.002468
sides = 360
for i in range(sides):
name = str(i) + "mandel360.png"
zoom = 2*10 ** -5
cx = math.cos(2*pi * i/sides)*.25
cy = math.sin(2*pi * i /sides)*.25
fractal.mandelbrot(iteration = 400, points = 500, prec = zoom ,x=-.5+cx,y=cy, picname= name)
"""Determine the dimensions in pixels of a BMP image.
Args:
filename: The filename of a BMP file.
Returns:
A tuple containing two integers with the width
and height in pixels.
Raises:
ValueError: If the file was not a BMP file.
OSError: If there was a problem reading the file.
"""
with open(filename, 'rb') as f:
magic = f.read(2)
if magic != b'BM':
raise ValueError("{} is not a BMP file".format(filename))
f.seek(18)
width_bytes = f.read(4)
height_bytes = f.read(4)
return (_bytes_to_int32(width_bytes), _bytes_to_int32(height_bytes))
from fractal import mandelbrot
if __name__ == "__main__":
pixels = mandelbrot(448, 256)
write_grayscale("mandel.bmp", pixels)
for c in range(256):
bmp.write(bytes((c, c, c, 0))) # Blue, Green, Red, Zero
# Pixel data
pixel_data_bookmark = bmp.tell()
for row in reversed(pixels): # BMP files are bottom to top
row_data = bytes(row)
bmp.write(row_data)
padding = b'\x00' * (
(4 - (len(row) % 4)) % 4) # Pad row to multiple of four bytes
bmp.write(padding)
# End of file
eof_bookmark = bmp.tell()
# Fill in file size placeholder
bmp.seek(size_bookmark)
bmp.write(_int32_to_bytes(eof_bookmark))
# Fill in pixel offset placeholder
bmp.seek(pixel_offset_bookmark)
bmp.write(_int32_to_bytes(pixel_data_bookmark))
def _int32_to_bytes(i):
"Convert an integer to four bytes in little-endian format."
return bytes((i & 0xff, i >> 8 & 0xff, i >> 16 & 0xff, i >> 24 & 0xff))
write_grayscale('test1.bmp', mandelbrot(640, 430))