mirror of
https://github.com/a2-4am/4cade.git
synced 2024-12-12 03:29:48 +00:00
58 lines
1.9 KiB
Python
Executable File
58 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
from math import sqrt, sin, cos, acos, pi
|
|
import util
|
|
|
|
# Graph is plotted across the entire HGR screen, but only coordinates
|
|
# - on every 3rd row
|
|
# - on even columns
|
|
# are included.
|
|
#
|
|
# X coordinates are converted to byte+bitmask (but see notes below).
|
|
# Y coordinates are flipped (so 0,0 ends up on the bottom left) then
|
|
# divided by 3.
|
|
#
|
|
# 6502 code will be responsible for plotting each of these coordinates
|
|
# in a 2x3 block. The bitmask usually includes 2 adjacent pixels;
|
|
# the code will also plot the same 2 adjacent pixels in the next two rows.
|
|
#
|
|
# Unfortunately, since bytes are 7 pixels across, some of the 2-pixel-wide
|
|
# blocks will cross a byte boundary. To simplify the 6502 code, these are
|
|
# simply listed as separate coordinate pairs, each with a bitmask that
|
|
# includes 1 pixel instead of 2.
|
|
|
|
max_x = 280
|
|
max_y = 192
|
|
|
|
def f(theta, k):
|
|
r = k*(5+2*cos(5*theta))
|
|
return r*cos(theta+(2*pi*k/50.0)),r*sin(theta+(2*pi*k/50.0))
|
|
|
|
coords = []
|
|
for k_mul in range(5000):
|
|
for t_mul in range(int(pi*1000+1)):
|
|
a, b = f(float(t_mul/100), float(k_mul)/100.0)
|
|
x = round(max_x//2+a*1.2)
|
|
y = round(max_y//2+b)
|
|
if (x % 2 != 0) or (y % 3 != 0):
|
|
continue
|
|
if x < 0 or x >= max_x or y < 0 or y >= max_y:
|
|
continue
|
|
coords.append((x,y))
|
|
|
|
unique_coords = util.unique(coords)
|
|
unique_vals = util.vals_3bit(unique_coords)
|
|
with open("../../../src/fx/fx.hgr.flower.radial.data.a", "w") as f:
|
|
for aval, bval in unique_vals:
|
|
f.write(" !byte %s,%s\n" % (aval, bval))
|
|
|
|
ripple_vals = util.ripple(unique_vals)
|
|
with open("../../../src/fx/fx.hgr.flower.radial.ripple.data.a", "w") as f:
|
|
for aval, bval in ripple_vals:
|
|
f.write(" !byte %s,%s\n" % (aval, bval))
|
|
|
|
unique_vals.reverse()
|
|
with open("../../../src/fx/fx.hgr.flower.radial.in.data.a", "w") as f:
|
|
for aval, bval in unique_vals:
|
|
f.write(" !byte %s,%s\n" % (aval, bval))
|