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oil slic.py
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import math
import time
import random
from math import floor
from ctypes import c_int64
import numpy as np
import pygame
import pygame.gfxdraw
import numba
GRADIENTS2 = np.array([
5, 2, 2, 5,
-5, 2, -2, 5,
5, -2, 2, -5,
-5, -2, -2, -5,
], dtype=np.int64)
GRADIENTS3 = np.array([
-11, 4, 4, -4, 11, 4, -4, 4, 11,
11, 4, 4, 4, 11, 4, 4, 4, 11,
-11, -4, 4, -4, -11, 4, -4, -4, 11,
11, -4, 4, 4, -11, 4, 4, -4, 11,
-11, 4, -4, -4, 11, -4, -4, 4, -11,
11, 4, -4, 4, 11, -4, 4, 4, -11,
-11, -4, -4, -4, -11, -4, -4, -4, -11,
11, -4, -4, 4, -11, -4, 4, -4, -11,
], dtype=np.int64)
GRADIENTS4 = np.array([
3, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3,
-3, 1, 1, 1, -1, 3, 1, 1, -1, 1, 3, 1, -1, 1, 1, 3,
3, -1, 1, 1, 1, -3, 1, 1, 1, -1, 3, 1, 1, -1, 1, 3,
-3, -1, 1, 1, -1, -3, 1, 1, -1, -1, 3, 1, -1, -1, 1, 3,
3, 1, -1, 1, 1, 3, -1, 1, 1, 1, -3, 1, 1, 1, -1, 3,
-3, 1, -1, 1, -1, 3, -1, 1, -1, 1, -3, 1, -1, 1, -1, 3,
3, -1, -1, 1, 1, -3, -1, 1, 1, -1, -3, 1, 1, -1, -1, 3,
-3, -1, -1, 1, -1, -3, -1, 1, -1, -1, -3, 1, -1, -1, -1, 3,
3, 1, 1, -1, 1, 3, 1, -1, 1, 1, 3, -1, 1, 1, 1, -3,
-3, 1, 1, -1, -1, 3, 1, -1, -1, 1, 3, -1, -1, 1, 1, -3,
3, -1, 1, -1, 1, -3, 1, -1, 1, -1, 3, -1, 1, -1, 1, -3,
-3, -1, 1, -1, -1, -3, 1, -1, -1, -1, 3, -1, -1, -1, 1, -3,
3, 1, -1, -1, 1, 3, -1, -1, 1, 1, -3, -1, 1, 1, -1, -3,
-3, 1, -1, -1, -1, 3, -1, -1, -1, 1, -3, -1, -1, 1, -1, -3,
3, -1, -1, -1, 1, -3, -1, -1, 1, -1, -3, -1, 1, -1, -1, -3,
-3, -1, -1, -1, -1, -3, -1, -1, -1, -1, -3, -1, -1, -1, -1, -3,
], dtype=np.int64)
STRETCH_CONSTANT2 = -0.211324865405187
SQUISH_CONSTANT2 = 0.366025403784439
STRETCH_CONSTANT3 = -1.0 / 6
SQUISH_CONSTANT3 = 1.0 / 3
STRETCH_CONSTANT4 = -0.138196601125011
SQUISH_CONSTANT4 = 0.309016994374947
NORM_CONSTANT2 = 47
NORM_CONSTANT3 = 103
NORM_CONSTANT4 = 30
@numba.njit(cache=True)
def extrapolate2(perm, xsb, ysb, dx, dy):
index = perm[(perm[xsb & 0xFF] + ysb) & 0xFF] & 0x0E
g1, g2 = GRADIENTS2[index : index + 2]
return g1 * dx + g2 * dy
@numba.njit(cache=True)
def generatekey(x, y, perm):
stretch_offset = (x + y) * STRETCH_CONSTANT2
xs = x + stretch_offset
ys = y + stretch_offset
xsb = floor(xs)
ysb = floor(ys)
squish_offset = (xsb + ysb) * SQUISH_CONSTANT2
xb = xsb + squish_offset
yb = ysb + squish_offset
xins = xs - xsb
yins = ys - ysb
in_sum = xins + yins
dx0 = x - xb
dy0 = y - yb
value = 0
dx1 = dx0 - 1 - SQUISH_CONSTANT2
dy1 = dy0 - 0 - SQUISH_CONSTANT2
attn1 = 2 - dx1 * dx1 - dy1 * dy1
if attn1 > 0:
attn1 *= attn1
value += attn1 * attn1 * extrapolate2(perm, xsb + 1, ysb + 0, dx1, dy1)
dx2 = dx0 - 0 - SQUISH_CONSTANT2
dy2 = dy0 - 1 - SQUISH_CONSTANT2
attn2 = 2 - dx2 * dx2 - dy2 * dy2
if attn2 > 0:
attn2 *= attn2
value += attn2 * attn2 * extrapolate2(perm, xsb + 0, ysb + 1, dx2, dy2)
if in_sum <= 1:
zins = 1 - in_sum
if zins > xins or zins > yins:
if xins > yins:
xsv_ext = xsb + 1
ysv_ext = ysb - 1
dx_ext = dx0 - 1
dy_ext = dy0 + 1
else:
xsv_ext = xsb - 1
ysv_ext = ysb + 1
dx_ext = dx0 + 1
dy_ext = dy0 - 1
else:
xsv_ext = xsb + 1
ysv_ext = ysb + 1
dx_ext = dx0 - 1 - 2 * SQUISH_CONSTANT2
dy_ext = dy0 - 1 - 2 * SQUISH_CONSTANT2
else:
zins = 2 - in_sum
if zins < xins or zins < yins:
if xins > yins:
xsv_ext = xsb + 2
ysv_ext = ysb + 0
dx_ext = dx0 - 2 - 2 * SQUISH_CONSTANT2
dy_ext = dy0 + 0 - 2 * SQUISH_CONSTANT2
else:
xsv_ext = xsb + 0
ysv_ext = ysb + 2
dx_ext = dx0 + 0 - 2 * SQUISH_CONSTANT2
dy_ext = dy0 - 2 - 2 * SQUISH_CONSTANT2
else:
dx_ext = dx0
dy_ext = dy0
xsv_ext = xsb
ysv_ext = ysb
xsb += 1
ysb += 1
dx0 = dx0 - 1 - 2 * SQUISH_CONSTANT2
dy0 = dy0 - 1 - 2 * SQUISH_CONSTANT2
attn0 = 2 - dx0 * dx0 - dy0 * dy0
if attn0 > 0:
attn0 *= attn0
value += attn0 * attn0 * extrapolate2(perm, xsb, ysb, dx0, dy0)
attn_ext = 2 - dx_ext * dx_ext - dy_ext * dy_ext
if attn_ext > 0:
attn_ext *= attn_ext
value += attn_ext * attn_ext * extrapolate2(perm, xsv_ext, ysv_ext, dx_ext, dy_ext)
return value / NORM_CONSTANT2
def overflow(x):
return c_int64(x).value
def getseed(seed):
perm = np.zeros(256, dtype=np.int64)
perm_grad_index3 = np.zeros(256, dtype=np.int64)
source = np.arange(256)
seed = overflow(seed * 6364136223846793005 + 1442695040888963407)
seed = overflow(seed * 6364136223846793005 + 1442695040888963407)
seed = overflow(seed * 6364136223846793005 + 1442695040888963407)
for i in range(255, -1, -1):
seed = overflow(seed * 6364136223846793005 + 1442695040888963407)
r = int((seed + 31) % (i + 1))
if r < 0:
r += i + 1
perm[i] = source[r]
perm_grad_index3[i] = int((perm[i] % (len(GRADIENTS3) / 3)) * 3)
source[r] = source[i]
return perm
pygame.init()
display = pygame.display.set_mode((1920, 1080), pygame.FULLSCREEN, vsync=1)
display.convert()
clock = pygame.time.Clock()
start = time.perf_counter()
now_time = 0
window_x, window_y = display.get_size()
dsc = ((window_x**2) + (window_y**2))**0.5
o = int((dsc*math.cos(1/4 * math.pi)))
rseed = getseed(random.randint(0, 999999))
gseed = getseed(random.randint(0, 999999))
bseed = getseed(random.randint(0, 999999))
seed = getseed(random.randint(0, 999999))
mask = pygame.Surface((window_x, window_y))
mask.fill([0, 0, 0])
c = window_x/2, window_y/2
pygame.draw.circle(mask, (255, 0, 0), c, window_y/2)
mask.set_colorkey([255, 0, 0])
mask = mask.convert_alpha()
while True:
window_x, window_y = display.get_size()
display.fill([0, 0, 0])
x = (window_x/2) + math.sin(now_time)*(window_y/2)
y = (window_y/2) + math.cos(now_time)*(window_y/2)
J = 15 # 25 or 50
msc = 3
for k in range(-window_y, window_y, J):
x1 = k+o
x2 = k
y = 0
for x in range(x1, x2, -1):
if x > 410 and x < 1510:
if not generatekey(x/100, (now_time+k)/150, seed) > 0 or generatekey(-(now_time-x)/15, (now_time+k)/15, seed) > 0:
r = (255/2)*(1+generatekey(x/150, (now_time+k)/150, rseed))
g = (255/2)*(1+generatekey((now_time+x)/150, k/150, gseed))
b = (255/2)*(1+generatekey(x/150, (now_time+k)/150, bseed))
pygame.gfxdraw.pixel(display, x, y, (int(r), int(g), int(b)))
y += 1
display.blit(mask, (0, 0))
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
pygame.quit()
quit()
if event.key == pygame.K_SPACE:
display.fill([0, 0, 0])
pygame.display.flip()
clock.tick(75)
now_time = time.perf_counter()-start