Created
February 23, 2023 07:34
-
-
Save zvodd/e6ca7554f46c79ff0cec2a16262f31a1 to your computer and use it in GitHub Desktop.
pygame spiral markov chain pixels
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import pygame | |
import numpy as np | |
SCREEN_X = 256 | |
SCREEN_Y = 256 | |
GRID_SIZE = SCREEN_X //6 | |
CELL_W = SCREEN_X // GRID_SIZE | |
CELL_H = SCREEN_Y // GRID_SIZE | |
CALLWIDTH = min(CELL_H // 4,CELL_W // 4) #int(GRID_SIZE ** 0.5) | |
ANIM_TICK_EVENT = pygame.USEREVENT + 0 | |
SELF_CHANCE = 0.9 | |
def gen_1d_probs(i,n,self_chance=0.5): | |
for j in range(n): | |
if i == j: | |
yield 0 + self_chance | |
else: | |
yield (1 - self_chance) / (n - 1) | |
def spiral_indices_outward(n): | |
X = Y = n | |
x = y = 0 | |
dx = 0 | |
dy = -1 | |
inds = [] | |
for _ in range(max(X, Y)**2): | |
if (-X/2 < x <= X/2) and (-Y/2 < y <= Y/2): | |
inds.append((x, y)) | |
if x == y or (x < 0 and x == -y) or (x > 0 and x == 1-y): | |
dx, dy = -dy, dx | |
x, y = x+dx, y+dy | |
return [(x+n//2, y+n//2) for x,y in inds] | |
def draw_spiral(indices, canvas, pallet=[(237,106,90), (126,132,107)]): | |
lastcol = 0 | |
plen = len(pallet) | |
for i, (x, y) in enumerate(indices): | |
colndx = np.random.choice(plen, p=[*gen_1d_probs(lastcol,plen,self_chance=SELF_CHANCE)]) | |
colour = pallet[colndx] | |
lastcol = colndx | |
pygame.draw.rect(canvas, colour, (x * CELL_W, y * CELL_H, CELL_W, CELL_H), 0) | |
yield | |
def main(): | |
pygame.init() | |
pygame.display.set_caption("Wave") | |
screen = pygame.display.set_mode((SCREEN_X, SCREEN_Y)) | |
clock = pygame.time.Clock() | |
canvas = pygame.Surface((SCREEN_X, SCREEN_Y)) | |
pallet = [(237,106,90), (126,132,107), (61,49,74), (244,241,187)]#, (255,255,255)] | |
pygame.time.set_timer(ANIM_TICK_EVENT, 10) | |
indices = spiral_indices_outward(GRID_SIZE) | |
gen = (x for x in []) # generator that fires StopIteration immidiately | |
while True: | |
clock.tick(60) | |
for event in pygame.event.get(): | |
if event.type == pygame.QUIT: | |
pygame.quit() | |
return | |
if event.type == ANIM_TICK_EVENT: | |
try: | |
gen.__next__() | |
except StopIteration: | |
canvas.fill((0, 0, 0)) | |
gen = draw_spiral(indices, canvas, pallet=pallet) | |
gen.__next__() | |
screen.fill((0, 0, 0)) | |
screen.blit(canvas, (0, 0)) | |
pygame.display.update() | |
if __name__ == "__main__": | |
main() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment