day 50

README.md

@@ -8,6 +8,14 @@ If you enjoy this, make a small donation [here](https://www.paypal.com/cgi-bin/w
 
 ----
 
+![s050](s050/s050.gif)
+
+050: [code](https://github.com/villares/sketch-a-day/tree/master/s050)  [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)] 
+
+Arrows now...
+
+----
+
 ![s049](s049/s049.gif)
 
 049: [code](https://github.com/villares/sketch-a-day/tree/master/s049)  [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)] 

s050/s050.pyde

@@ -1,36 +1,23 @@
+add_library('pdf')
 import random as rnd
 
 LISTA = []
-MARGIN = 25
+MARGIN = 100
 
 def setup():
-    size(500, 500)
-    background(200)
+    size(712, 712)
     noFill()
-    smooth(12)
+    nova_lista()
+    println("'s' to save, and 'n' for a new drawing")
 
-def draw():
-    for x, y, s, w, arrow, sub_list in LISTA:
-        strokeWeight(w)
-        for n in sub_list:
-            if arrow:
-                stroke(0)
-                seta(x, y, n[0], n[1], s, w*5)
-            else:
-                stroke(255)
-                line(x, y, n[0], n[1])
-        ellipse(x, y, s, s)
-
-
-def keyPressed():
-    background(200)
+def nova_lista():
     LISTA[:] = []
-    for _ in range(20):
+    for _ in range(30):
         LISTA.append((
             random(MARGIN, width - MARGIN),  # x
             random(MARGIN, height - MARGIN),  # y
             rnd.choice([10, 20, 30]),  # size
-            rnd.choice([2, 3, 5]),  # strokeW
+            rnd.choice([2, 4, 6]),  # strokeWeight
             rnd.choice([True, False]),  # arrow
             list()  # other nodes
         ))
@@ -40,13 +27,33 @@ def keyPressed():
             node[-1].append(random_node)
 
 
-def seta(x1, y1, x2, y2, encurta=12, head=12):
-    d = dist(x1, y1, x2, y2)
+def seta(x1, y1, x2, y2, shorter=12, head=12):
+    """ draws an arrow """
+    L = dist(x1, y1, x2, y2)
     with pushMatrix():
         translate(x2, y2)
         angle = atan2(x1 - x2, y2 - y1)
         rotate(angle)
-        offset = -encurta * .6
-        line(0, offset, 0, -d - offset)
+        offset = -shorter * .6
+        line(0, offset, 0, -L - offset)
         line(0, offset, -head / 3, -head + offset)
         line(0, offset, head / 3, -head + offset)
+
+def draw():
+    background(200)
+    for x, y, s, w, arrow, sub_lista in LISTA:
+        strokeWeight(w)
+        for n in sub_lista:
+            if arrow:
+                stroke(0)
+                seta(x, y, n[0], n[1], s, w * 5)
+            else:
+                stroke(255)
+                line(x, y, n[0], n[1])
+        ellipse(x, y, s, s)
+        
+def keyPressed():
+    if key == 's':
+        saveFrame("####.png")
+    if key == 'n':
+        nova_lista()