147

s147/gif_export_wrapper.py

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+"""
+Alexandre B A Villares http://abav.lugaralgum.com - GPL v3 
+
+A helper for the Processing gifAnimation library (https://github.com/jordanorelli)
+ported to Processing 3 by 01010101 (https://github.com/01010101)
+Download the library from https://github.com/01010101/GifAnimation/archive/master.zip
+This helper was inspired by an example by Art Simon https://github.com/APCSPrinciples/AnimatedGIF/
+
+Put  at the start of your sketch:
+   add_library('gifAnimation')
+   from gif_exporter import gif_export
+and at the end of draw():
+    gif_export(GifMaker)
+"""
+
+def gif_export(GifMaker,             # gets a reference to the library
+               filename="exported",  # .gif will be added
+               repeat=0,             # 0 makes it an "endless" animation
+               quality=48,          # quality range 0 - 255
+               delay=170,            # this is quick
+               frames=0):            # 0 will stop on keyPressed or frameCount >= 100000
+    global gifExporter
+    try:
+        gifExporter
+    except NameError:
+        gifExporter = GifMaker(this, filename + ".gif")
+        gifExporter.setRepeat(repeat)
+        gifExporter.setQuality(quality)
+        gifExporter.setDelay(delay)
+        gif_export._frame = frameCount
+        print("gif start")
+
+    gifExporter.addFrame()
+
+    if (frames == 0 and keyPressed or frameCount - gif_export._frame >= 100000) \
+            or (frames != 0 and frameCount - gif_export._frame >= frames):
+        gifExporter.finish()
+        #background(255)
+        print("gif saved")
+        del(gifExporter)
+        noLoop()
+        return False
+    else:
+        return True

s147/s147.pyde

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+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME, OUTPUT = "s147", ".gif"  # 180527
+
+add_library('gifAnimation')
+from gif_export_wrapper import *
+
+GRID_SIZE = 50
+
+def setup():
+    size(500, 500)
+    print_text_for_readme(SKETCH_NAME, OUTPUT)
+    border = 20
+    spacing = (width - border * 2) / GRID_SIZE
+    Ponto.spacing = spacing
+    for j in range(GRID_SIZE):
+        for i in range(GRID_SIZE):
+            Ponto.PONTOS.append(Ponto(border + spacing / 2 + i * spacing,
+                                      border + spacing / 2 + j * spacing)
+                                )
+    for p in Ponto.PONTOS:
+        p.set_neighbours()
+            
+
+def draw():
+    background(0)
+    for p in Ponto.PONTOS:
+        p.update()
+        
+    if frameCount > 100 and not frameCount % 2:
+        gif_export(GifMaker, frames=200, filename=SKETCH_NAME)
+
+class Ponto():
+    PONTOS = []
+
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+        self.px = x
+        self.py = y
+        
+    def set_neighbours(self):
+        self.ort_ngb = [] # orthogonal neighbours
+        self.dia_ngb = [] # diagonal neighbours
+        for p in Ponto.PONTOS:
+            d = dist(p.px, p.py, self.px, self.py)
+            if  Ponto.spacing * 1.41 < d < Ponto.spacing * 1.42:
+                self.dia_ngb.append(p)
+            elif  d < Ponto.spacing * 1.41:
+                self.ort_ngb.append(p)
+
+    def update(self):
+        rx = random(-0.5, 0.5)
+        ry = random(-0.5, 0.5)
+        if abs(self.px + rx - self.x) < Ponto.spacing * 0.25:
+            self.px += rx
+        if abs(self.py + ry - self.y) < Ponto.spacing * 0.25:
+            self.py += ry
+        self.plot()
+
+    def plot(self):
+        for p in self.ort_ngb + self.dia_ngb:
+            d = dist(p.px, p.py, self.px, self.py)
+            if  Ponto.spacing * .9 < d <= Ponto.spacing * 1.2:
+                stroke(128, 0, 0)
+                line(p.px, p.py, self.px, self.py)
+            elif  d < Ponto.spacing * 0.9:
+                stroke(255)    
+                line(p.px, p.py, self.px, self.py)
+
+
+def print_text_for_readme(name, output):
+    println("""
+![{0}]({0}/{0}{2})
+
+{1}: [code](https://github.com/villares/sketch-a-day/tree/master/{0}) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+
+""".format(name, name[1:], output)
+    )