Processing en Python

Exemple 4

Simulation d'aquarium réalisée avec Skulpt-Processing et les images de Scratch.

from processing import *

IMG_URL = "https://diraison.github.io/GenPyExo/images/"
NB_POISSONS = 15
poissons = None
fond = None

################################################

class Poisson:

def __init__(self, image_path=None):
        self.x = random(0, environment.width)
        self.y = random(0, environment.height)
        self.n = 0
        self.dx = self.dy = 0
        self.taille = random(50, 70)
        self.img = loadImage(image_path)

def nager(self):
        if self.n <= 0:
            x0 = random(0, environment.width)
            y0 = random(0, environment.height)
            self.n = int(random(500, 700))
            self.dx = (x0 - self.x) / self.n
            self.dy = (y0 - self.y) / self.n
        self.x += self.dx
        self.y += self.dy
        self.n -= 1

def dessiner(self):
        #self.tracer_chemin()
        image(self.img, self.x, self.y, self.taille, self.taille)

def tracer_chemin(self):
        fill(0xffffffaa)
        x0 = self.x + self.n * self.dx
        y0 = self.y + self.n * self.dy
        ellipse(self.x, self.y, 10, 10)
        line(self.x, self.y, x0, y0)
        ellipse(x0, y0, 8, 8)

################################################

def setup():
    global fond, poissons
    size(640, 480)
    imageMode(CENTER)
    fond = loadImage(IMG_URL + "fond-corail.jpg")
    poissons = [ Poisson(IMG_URL + "poisson-{}.png".format(n % 6)) 
                for n in range(NB_POISSONS) ]

def draw():
    image(fond, environment.width/2, environment.height/2)
    #text(environment.frameRate, 5, 15)
    for poisson in poissons:
        poisson.nager()
        poisson.dessiner()

run()