xen32os/gen/logogen.py
2024-02-07 19:33:35 +01:00

74 lines
1.6 KiB
Python

import struct
import math
import random
random.seed(0)
LOGO = '''
BBBB BBBB BB B
B B B
BB BBBB B B
B B B
BBBB BBBB B BB
WWWW WWWW
W W
WWWW WWWW
W W
WWWW WWWW
'''[1:-1]
LOGO = '''
RRRR RRRR RR R BBBB BBBB
R R R B B
RR RRRR R R BBBB BBBB
R R R B B
RRRR RRRR R RR BBBB BBBB
WWWW WWWW
W W W
W W WWWW
W W W
WWWW WWWW
'''[1:-1]
LOGO = LOGO.split("\n")
print(LOGO)
width = max(len(row) for row in LOGO)
height = len(LOGO)
print("width =", width)
print("height =", height)
with open("xenrom/data/logo.dat", "wb") as data_out, open("xenrom/data/logo.inc", "w") as inc:
for y in range(height):
row = LOGO[y]
for x in range(width):
c = row[x] if x < len(row) else ' '
data_out.write(b'\x00' if c == ' ' else b'\x01' if c == 'B' else b'\x02' if c == 'W' else b'\x03')
inc.write(f"const LOGO_WIDTH: {hex(width)}\n")
inc.write(f"const LOGO_HEIGHT: {hex(height)}\n")
with open("xenrom/data/logo_cycle.dat", "wb") as data, open("xenrom/data/logo_cycle.inc", "w") as inc:
T = 60
N = T * 4
r = 0
for i in range(N):
if i < T or i > 3 * T:
f = 0.5 - (1/2 * math.cos((i/T) * math.pi))
elif i < 180:
f = 0.75 - (1/4 * math.cos((i/T) * math.pi))
if i == 3 * T - 10:
r = 1
if i == 3 * T:
r = 2
if i == 3 * T + 10:
r = 0
data.write(struct.pack("BB", min(255, int(256 * f)), r))
inc.write(f"const LOGO_LENGTH: {N}")