36 lines
741 B
Python
36 lines
741 B
Python
import numpy as np
|
|
|
|
|
|
def saveAsPrg(fn, address, data):
|
|
fo = open(fn, "wb")
|
|
header = np.array((address & 255, address / 256), np.uint8).tostring()
|
|
fo.write(header)
|
|
fo.write(data)
|
|
fo.close()
|
|
|
|
|
|
y, x = np.indices((200, 320))
|
|
yy = (y * 2 + 1 - 100) ** 2
|
|
xx = (x * 2 + 1 - 160) ** 2
|
|
r = (xx + yy) ** .5
|
|
bits = (r / 6).astype(np.int) % 2
|
|
|
|
bits = bits.reshape((25, 8, 40, 8))
|
|
bits = bits.transpose((0, 2, 1, 3))
|
|
bits = np.sum(bits * [128, 64, 32, 16, 8, 4, 2, 1], axis=3)
|
|
if 1:
|
|
bits[-1, -1, :] = [
|
|
0xe8,
|
|
0xd4,
|
|
0xb2,
|
|
0x71,
|
|
0x8e,
|
|
0x4d,
|
|
0x2b,
|
|
0x17,
|
|
]
|
|
|
|
data = bits.astype(np.uint8).tostring()
|
|
saveAsPrg("bmp.prg", 0x2000, data)
|
|
open("bmp.bin","wb").write(data)
|