03

2020/sketch_2020_11_03_LSystem/sketch_2020_11_03_LSystem.pyde

@@ -0,0 +1,104 @@
+# Other L-System
+
+count = 0
+iterations = 8
+stroke_len = 1100
+angle_deg = 135
+axiom = 'L'
+sentence = axiom
+rules = {
+    'L': '+RF[-LFL]+',
+    'R': '[-LF]+RFR-',
+}
+
+def setup():
+    size(600, 600)
+    global xo, yo, png
+    png = createGraphics(width * 5, height * 5)
+    xo, yo = 160, 460  # width / 2, height / 2 - 20
+    generate(iterations)
+
+def draw():
+    beginRecord(png)
+    smooth(4)
+    noFill()
+    colorMode(HSB)
+    png.scale(5)
+    strokeWeight(.2)
+    background(0)
+    translate(xo, yo)
+    plot(radians(angle_deg))
+    endRecord()
+
+def generate(n):
+    global stroke_len, sentence
+    for _ in range(n):
+        stroke_len *= 0.5
+        next_sentence = ''
+        for c in sentence:
+            next_sentence += rules.get(c, c)
+        sentence = next_sentence
+
+def plot(angle):
+    s = 0
+    for i, c in enumerate(sentence):
+        stroke(s % 256, 255, 255)
+        if c == 'F':
+            # stroke(255)
+            line(0, 0, 0, -stroke_len)
+            translate(0, -stroke_len)
+        elif c == '+':
+            rotate(angle)
+            s += 5
+        elif c == '-':
+            rotate(-angle)
+            s -= 5
+        elif c == '[':
+            pushMatrix()
+        elif c == ']':
+            popMatrix()
+        elif c == 'L':
+            circle(0, 0, stroke_len / 10.0)
+        elif c == 'R':
+            circle(0, 0, stroke_len / 5.0)
+
+def keyPressed():
+    # global count
+    # count += 1
+    # png.save('{:0>4}.png'.format(count))
+    # print count
+    global angle_deg, xo, yo, stroke_len, iterations, sentence
+    if key == '-':
+        angle_deg -= 1.
+        print("angle:" + str(angle_deg))
+    if str(key) in "=+":
+        angle_deg += 1
+        print("angle:" + str(angle_deg))
+    if key == 's':
+        global count
+        count += 1
+        png.save('{}-{}.png'.format(angle_deg, iterations))
+        print count
+    if key == '.':
+        iterations += 1
+        sentence = axiom
+        generate(iterations)
+        print("iterations:" + str(iterations))
+    if key == ',':
+        iterations -= 1
+        sentence = axiom
+        generate(iterations)
+        print("iterations:" + str(iterations))
+    if key == 'x':
+        stroke_len *= 1.5
+    if key == 'z':
+        stroke_len /= 1.5
+    if keyCode == LEFT:
+        xo -= 50
+    if keyCode == RIGHT:
+        xo += 50
+    if keyCode == UP:
+        yo -= 50
+    if keyCode == DOWN:
+        yo += 50
+    print(xo, yo, stroke_len)

README.md

@@ -26,6 +26,12 @@ Here are listed some of the tools I have been using:
 
 ---
 
+![sketch_2020_11_03_LSystem](2020/sketch_2020_11_03_LSystem/sketch_2020_11_03_LSystem.gif)
+
+[sketch_2020_11_03_LSystem](https://github.com/villares/sketch-a-day/tree/master/2020/sketch_2020_11_03_LSystem) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+
+---
+
 ![sketch_2020_11_02polys](2020/sketch_2020_11_02polys/sketch_2020_11_02polys.jpeg)
 
 [sketch_2020_11_02polys](https://github.com/villares/sketch-a-day/tree/master/2020/sketch_2020_11_02polys) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]