from utils import lerp, sq, constrain
from math import sqrt
if __name__ == "__main__":
D = 0.9
SIZE = 16
data = []
pal = []
for i in range(8):
c = int(lerp(0, 255, float(i) / 7))
pal.extend([c, c, c])
im = Image.new('L', (SIZE, SIZE * 8))
im.putpalette(pal)
pix = im.load()
for size in range(8, 16):
r = lerp(2.0, 1.0, float(size - 8) / 7)
for i in range(SIZE):
for j in range(SIZE):
u = lerp(-r, r, float(i) / (SIZE - 1))
v = lerp(-r, r, float(j) / (SIZE - 1))
d = sq(1.4 - constrain(sqrt(sq(u) + sq(v)), 0.0, 1.4))
pix[i, j + (size - 8) * SIZE] = int(constrain(d, 0.0, 1.0) * 7)
im.save("plotter-flares.png", "PNG")
for i in range(8):
pal.extend([0, 0, 0])
for i in range(16):
c = int(lerp(0, 255, float(i + 1) / 16))
pal.extend([c, c, c])
for i in range(4):
pal.extend([255, 255, 255])
for i in range(4):
c = int(lerp(255, 0, float(i + 1) / 4))
pal.extend([c, c, c])
for i in range(size[0]):
for j in range(size[1]):
x = lerp(-D, D, float(i) / size[0])
y = lerp(-D, D, float(j) / size[1])
d = dist(x, y, 0, 0)
if d < D:
p = constrain(int(sq(1.0 - d) * 128), 0, 31)
else:
p = 0
data.append(int(p))
im = Image.new('L', size)
im.putdata(data)
im.putpalette(pal)
im.save(sys.argv[1], "PNG")
from utils import lerp, sq, constrain
from math import sqrt
if __name__ == "__main__":
D = 0.9
SIZE = 16
data = []
pal = []
for i in range(8):
c = int(lerp(0, 255, float(i) / 7))
pal.extend([c, c, c])
im = Image.new('L', (SIZE, SIZE * 8))
im.putpalette(pal)
pix = im.load()
for size in range(8, 16):
r = lerp(2.0, 1.0, float(size - 8) / 7)
for i in range(SIZE):
for j in range(SIZE):
u = lerp(-r, r, float(i) / (SIZE - 1))
v = lerp(-r, r, float(j) / (SIZE - 1))
d = sq(1.4 - constrain(sqrt(sq(u) + sq(v)), 0.0, 1.4))
pix[i, j + (size - 8) * SIZE] = int(constrain(d, 0.0, 1.0) * 7)
im.save("plotter-flares.png", "PNG")
for i in range(8):
pal.extend([0, 0, 0])
for i in range(16):
c = int(lerp(0, 255, float(i + 1) / 16))
pal.extend([c, c, c])
for i in range(4):
pal.extend([255, 255, 255])
for i in range(4):
c = int(lerp(255, 0, float(i + 1) / 4))
pal.extend([c, c, c])
for i in range(size[0]):
for j in range(size[1]):
x = lerp(-D, D, float(i) / size[0])
y = lerp(-D, D, float(j) / size[1])
d = dist(x, y, 0, 0);
if d < D:
p = constrain(int(sq(1.0 - d) * 128), 0, 31)
else:
p = 0
data.append(int(p))
im = Image.new('L', size)
im.putdata(data)
im.putpalette(pal)
im.save("metaball.png", "PNG")
