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2020/sketch_2020_01_15a/particula.py

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+# Author: Berin
+# Sketches repo: https://github.com/berinhard/sketches
+# berin lib: https://github.com/berinhard/berin/
+class Particula(object):
+
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+        self.raio = random(50, 60)
+        self.angulo = random(TWO_PI)
+        self.angulo_inc = random(TWO_PI / 36)
+        self.raio_inc = random(1, 6)
+
+    def atualize(self):
+        self.color = color(250, random(50, 100), 50)
+        self.raio -= self.raio_inc
+        self.angulo += self.angulo_inc
+        self.x += random(-5, 2)
+        self.y += random(-2, 5)
+        
+    def desenha(self):
+        if self.raio > 0:
+            with pushMatrix():
+                translate(self.x, self.y)
+                rotate(self.angulo)
+                fill(self.color)
+                ellipse(0, 0, self.raio, self.raio)

2020/sketch_2020_01_15a/sketch_2020_01_15a.pyde

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+from random import choice, shuffle
+from particula import Particula
+
+NODE_SIZE = 5
+
+
+def setup():
+    size(500, 500)
+    global grid, f
+    f = createFont("Free Sans Bold", 100)
+    strokeWeight(1)
+
+    imagem = draw_text('PCD', 250, 225, text_size=225)
+    grid = make_grid(imagem, width, height, 25, margin=10)
+    background(100, 100, 200)
+
+def draw():
+    for particula in grid.values():
+        particula.atualize()
+        particula.desenha()
+
+
+def keyPressed():
+    if key == 's':
+        saveFrame("s####.png")
+
+
+def draw_text(txt, x, y, text_size=120):
+    img = createGraphics(width, height)
+    img.beginDraw()
+    img.textFont(f)
+    img.textAlign(CENTER, CENTER)
+    img.textSize(text_size)
+    # img.textFont(f)
+    img.text(txt, x, y)
+    img.endDraw()
+    return img
+
+
+def make_grid(p_graphics, w, h, s, margin=None):
+    off = s / 2
+    margin = off if margin is None else margin
+    cols, rows = (w - margin * 2) // s, (h - margin * 2) // s
+    points = dict()
+    for i in range(cols):
+        x = off + i * s + margin
+        for j in range(rows):
+            y = off + j * s + margin
+            bc = p_graphics.get(x, y)
+            if bc != 0:
+                points[(i, j)] = Particula(x, y)
+
+    return points