334

s334/s334.pyde

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+
+# Alexandre B A Villares - https://abav.lugaralgum.com/sketch-a-day
+SKETCH_NAME = "s334"  # 20181128
+OUTPUT = ".png"
+NUM = 5
+BORDER = 50
+
+#add_library('pdf')
+# add_library('gifAnimation')
+# from gif_exporter import gif_export
+
+def setup():
+    size(500, 500)
+    smooth(8)
+    init_points(NUM, BORDER)
+    background(200)
+    #print edges(points)
+    #beginRecord(PDF, SKETCH_NAME + ".pdf")
+    
+def draw():
+    #background(200)
+    stroke(0, 100)
+    strokeWeight(0.1)
+    for pair in edges(points):
+        l = Line(*pair)
+        l.plot()
+    strokeWeight(0.5)
+    noFill()
+    for p in points:
+        pass
+        #ellipse(p.x, p.y, 7, 7)    
+    
+        
+def keyPressed():
+    if key == "n" or key == CODED:
+        init_points(NUM, BORDER)
+        background(200)
+        #saveFrame("###.png")
+    if key == "s": saveFrame(SKETCH_NAME + ".png")
+    if key == "z":
+        new_points = [] 
+        for pair in edges(points):
+            p = PVector.lerp(pair[0], pair[1], random(0, 1))
+            new_points.append(p)
+            # l = Line(*pair)
+            # l.plot()
+            points[:] = new_points
+                       
+
+def init_points(grid_size, border=0):
+    global points
+    #points = create_points(grid_size, border) 
+    points = [PVector(random(border, width - border), 
+                      random(border, height - border))
+              for _ in range(grid_size)]
+
+class Line():
+    """ I should change this to a named tuple... """
+    def __init__(self, p1, p2):
+        self.p1 = p1
+        self.p2 = p2
+        
+    def plot(self):
+        line(self.p1.x, self.p1.y, self.p2.x, self.p2.y)
+    
+    def lerp(self, other, t):
+        p1 = PVector.lerp(self.p1, other.p1, t)
+        p2 = PVector.lerp(self.p2, other.p2, t)
+        return Line(p1, p2)
+
+def edges(poly_points):
+    return pairwise(poly_points) + [(poly_points[-1], poly_points[0])]   
+
+def pairwise(iterable):
+    import itertools
+    "s -> (s0,s1), (s1,s2), (s2, s3), ..."
+    a, b = itertools.tee(iterable)
+    next(b, None)
+    return zip(a, b) 
+                        
+                                    
+# print text to add to the project's README.md             
+def settings():
+    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(SKETCH_NAME, SKETCH_NAME[1:], OUTPUT)
+    )