2020_05_08a

2020/sketch_2020_5_08a/gif_animation_helper.py

@@ -0,0 +1,44 @@
+"""
+Alexandre B A Villares http://abav.lugaralgum.com - GPL v3 
+
+A helper for the Processing gifAnimation library https://github.com/extrapixel/gif-animation/tree/3.0
+Download from https://github.com/villares/processing-play/blob/master/export_GIF/unzip_and_move_to_libraries_GifAnimation.zip
+This helper was inspired by an example by Art Simon https://github.com/APCSPrinciples/AnimatedGIF/
+
+v2019_09_23
+
+# add at the start of your sketch:
+  add_library('gifAnimation')
+  from gif_animation_helper import gif_export
+# add at the end of draw():
+  gif_export(GifMaker, "filename")
+"""
+
+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=32,          # quality range 0 - 255
+               delay=200,            # this is quick
+               frames=0,             # 0 will stop on keyPressed or frameCount >= 100000
+               finish=False):        # force stop
+    global gifExporter
+    try:
+        gifExporter
+    except NameError:
+        gifExporter = GifMaker(this, filename + ".gif")
+        gifExporter.setRepeat(repeat)
+        gifExporter.setQuality(quality)
+        gifExporter.setDelay(delay)
+        print("gif recording started")
+
+
+    gifExporter.addFrame()
+
+    if (frames == 0 and keyPressed and key == "e" or
+        frames != 0 and frameCount >= frames):
+        finish = True
+                
+    if finish:
+        gifExporter.finish()
+        print("gif saved, exit")
+        exit()

2020/sketch_2020_5_08a/sketch_2020_5_08a.pyde

@@ -0,0 +1,79 @@
+"""
+Yet another noise fielf
+"""
+
+add_library('GifAnimation')
+from gif_animation_helper import gif_export
+sketch_name = 'sketch_2020_05_7a'
+
+escala = 0.002
+xo = yo = zo = 0 
+s_len = 30
+def setup():
+    size(500, 500)
+    strokeWeight(2)
+    
+def draw():
+    background(240)
+    for x in range(-10, width + 10, 10):
+        for y in range(-10, height + 10, 10):
+            n = noise(x * escala,
+                     y * escala,
+                     zo * escala)
+            pushMatrix()
+            translate(x, y)
+            rotate(TWO_PI * n)
+            s = s_len * n
+            stroke(0, 200, 0)
+            line(-s, 0, s, 0)
+            popMatrix()
+            n = noise(x * escala,
+                     y * escala,
+                     (zo + yo)* escala)
+            pushMatrix()
+            translate(x, y)
+            rotate(TWO_PI * n)
+            s = s_len * n
+            stroke(0, 0, 200)
+            line(-s, 0, s, 0)
+            popMatrix()
+            n = noise(x * escala,
+                     y * escala,
+                     (zo + xo)* escala)
+            pushMatrix()
+            translate(x, y)
+            rotate(TWO_PI * n)
+            s = s_len * n
+            stroke(0)
+            line(-s, 0, s, 0)
+            popMatrix()
+        
+                                        
+def keyPressed():
+    gif_export(GifMaker, "animation", quality=10, delay=120)
+
+    global xo, yo, zo, s_len, escala
+    if key == 'd':
+        escala += 0.001
+    if key == 'c':
+        escala -= 0.001
+    if key == 's':
+        s_len +=1
+    if key == 'x':
+        s_len -=1
+    if key == 'a':
+        zo +=10
+    if key == 'z':
+        zo -=10
+    if keyCode == UP:
+        yo -=10
+    if keyCode == DOWN:
+        yo +=10
+    if keyCode == RIGHT:
+        xo +=10
+    if keyCode == LEFT:
+        xo -=10
+        
+    if key == 'q':
+        gif_export(GifMaker, "animation", finish=True)
+        

README.md

@@ -16,6 +16,13 @@ You may also support my artistic work, open educational resources and research u
 
 ## 2020
 
+---
+
+![sketch_2020_05_08a](2020/sketch_2020_05_08a/sketch_2020_05_08a.gif)
+
+[sketch_2020_05_08a](https://github.com/villares/sketch-a-day/tree/master/2020/sketch_2020_05_08a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+
+
 ---
 
 ![sketch_2020_05_07a](2020/sketch_2020_05_07a/sketch_2020_05_07a.gif)