199

s199/gif_export_wrapper.py

@@ -0,0 +1,38 @@
+"""
+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=128,          # quality range 0 - 255
+               delay=170,            # this is quick
+               finish=False):            # 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 finish:
+        gifExporter.finish()
+        print("gif saved")
+        del(gifExporter)
+

s199/s199.pyde

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+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME = "s199"  # 20180713
+OUTPUT = ".gif"
+
+from gif_export_wrapper import *
+add_library('gifAnimation')
+
+cycles = 5
+hatches = []
+global_rot = 0
+noise_scale = 0.04
+
+def setup():
+    print_text_for_readme(SKETCH_NAME, OUTPUT)
+    size(500, 500, P2D)
+    blendMode(MULTIPLY)
+    noStroke()
+
+    hatches.append(Hatch(color(0, 255, 255),  # cian
+                         radians(275)))
+    hatches.append(Hatch(color(255, 0, 255),  # magenta
+                         radians(45)))
+    hatches.append(Hatch(color(255, 255, 0),  # yellow
+                         radians(00)))
+
+def draw():
+    global global_rot
+    background(200)
+
+    for i, h in enumerate(hatches):
+        h.plot()
+
+    global_rot += 0.0314 * 2
+
+    if not frameCount % 2:
+        gif_export(GifMaker, filename=SKETCH_NAME)
+
+    if global_rot > TWO_PI:
+        gif_export(GifMaker, finish=True)
+        noLoop()
+
+
+class Hatch():
+
+    def __init__(self, c, rot):
+        self.n = width / 6
+        self.space = 10
+        l = self.n * self.space
+        self.x = width / 2
+        self.y = height / 2
+        self.rot = rot
+        self.c = c
+        #println((self.x, self.y, s))
+
+    def plot(self):
+        with pushMatrix():
+            translate(self.x, self.y)
+            rotate(self.rot)
+            s, l = self.space, self.n * self.space
+            for i in range(1, self.n):
+                for j in range(1, self.n):
+                    x = s / 2 + s * i - l / 2.
+                    y = s / 2 + s * j - l / 2.
+                    w = dist(mouseX - width / 2, mouseY - height / 2, x, y)
+                    #wy = sin(global_rot )
+                    d = s * map(w, 0, width / 2, 0, 1)
+                    fill(self.c)
+                    ellipse(x, y, d, d)
+
+
+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)
+    )