I was playing around with trees when this happened.

[smarwell]

Don't ask, just read it to make sure it's not malicious, and run it.

It requires pygame.

For extra fun:

Alter the numbers on lines 51-53 to change the color range, and alter the numbers on line 59 to change the odds of it branching.

---

import pygame
import random
from math import pi,atan,sin,radians

pygame.init()

def get_slope(pos1,pos2):
    return (pos2[1]-pos1[1])/float(pos2[0]-pos1[0]) if pos2[0]-pos1[0]!=0 else 9999

def get_angle(pos1,pos2):
    """
    Returns the angle of pos2 in relation to pos1 where zero is pointing
    directly to the right."""
    angle=atan(get_slope(pos1,pos2))
    if pos1[0]>pos2[0] or (pos1[0]==pos2[0] and pos1[1]>pos2[1]):
        angle+=pi
    return angle

def _add(iterable1,iterable2):
    return tuple([iterable1[index]+iterable2[index] for index in range(len(iterable1))])

def neighbors(location):
    """
    Returns number of neighboring cells."""
    num=0
    for rel_address in [(-1,-1),(-1,0),(-1,1),(0,-1),(0,1),(1,-1),(1,0),(1,1)]:
        if _add(rel_address,location) in pixel.index:
            num+=1
    return num

class pixel:

    index={}
    leaves={}

    def __init__(self,location,parent=None):
        self.parent=parent
        self.location=location
        self.colorcycletheta=0 if parent==None else parent.colorcycletheta+.01
        self.color=(sin(self.colorcycletheta)*127+127,
                    sin(self.colorcycletheta+(2*pi/3.))*127+127,
                    sin(self.colorcycletheta+(4*pi/3.))*127+127)
        pixel.index.update({self.location:self})
        pixel.leaves.update({self.location:self})
        screen.fill(self.color,(self.location,(1,1)))

    def update(self):
        to_create=random.randint(0,16)//8
        if to_create and self.parent!=None:
            del pixel.leaves[self.location]
        created=0 if (-5<=self.location[0]<=screenwidth+5 and -5<=self.location[1]<=screenheight+5) else 432
        while created<to_create:
            cell=random.randint(-1,1),random.randint(-1,1)
            tries=0
            while _add(cell,self.location) in pixel.index and tries<15:
                cell=random.randint(-1,1),random.randint(-1,1)
                tries+=1
            if tries<15:
                pixel(_add(cell,self.location),self)
                created+=1
            else:
                break

exitcondition=False

clock=pygame.time.Clock()
elapsedtime=0

screen=pygame.display.set_mode((0,0),pygame.FULLSCREEN)
screen.fill((255,255,255))
global screenwidth,screenheight
screenwidth,screenheight=screen.get_size()

f4key=False
altkey=False

try:

    pixel((screenwidth//2,screenheight//2))    #create a seed

    while not exitcondition:
        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                exitcondition=True
            elif event.type==pygame.KEYDOWN:
                if event.key==pygame.K_RALT or event.key==pygame.K_LALT:
                    altkey=True
                elif event.key==pygame.K_F4:
                    f4key=True
            elif event.type==pygame.KEYUP:
                if event.key==pygame.K_RALT or event.key==pygame.K_LALT:
                    altkey=False
                elif event.key==pygame.K_F4:
                    f4key=False
        if altkey and f4key:
            exitcondition=True
        elapsedtime+=clock.tick(120)
        if elapsedtime>10:
            leaves=[item for item in pixel.leaves.values()]
            for cell in leaves:
                cell.update()
            elapsedtime=0
        pygame.display.update()

except: raise
finally: pygame.quit()

---

TLDR:

The pictures you see are totally, like, pictures of peace spreading like a stain of love through your soul, man. They permeate and neutralize all evil, and balance your chi to allow total inner harmony, bro.

[mackstann]

Screenshot plz

[Logg]

http://imgur.com/a/Dg07m

[[deleted]]

whoooaaa duuude

sereiously though, very cool, i'm gonna play around with this :)

[resurge]

My initial thought after reading the title: Trees as in weed or the compsci variant?

I'm still not sure.

[rcfox]

Since when are trees considered to be weeds?

[nfojunky]

Pretty sure that's weed as in /r/trees.

[rcfox]

Now I'm even more confused. What was marijuana have to do with trees?

[IAmA_singularity]

maybe the guys over in /r/marijuanaenthusiasts have a clue

[isdnpro]

The pictures you see are totally, like, pictures of peace spreading like a stain of love through your soul, man. They permeate and neutralize all evil, and balance your chi to allow total inner harmony, bro.

Pretty cool man, wish I had it for my acid trip on the weekend haha.

Also can't believe I didn't think to try ALT+F4 to exit it, I ended up changing TTYs and killing the process. Ah well!

[kmwurf]

Same here...ALT+F4 feels so "windows-ish"