Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Fractals and L-Systems/Pentigree/LSystem.pde

@@ -0,0 +1,76 @@
+class LSystem {
+
+  int steps = 0;
+
+  String axiom;
+  String rule;
+  String production;
+
+  float startLength;
+  float drawLength;
+  float theta;
+
+  int generations;
+
+  LSystem() {
+
+    axiom = "F";
+    rule = "F+F-F";
+    startLength = 90.0;
+    theta = radians(120.0);
+    reset();
+  }
+
+  void reset() {
+    production = axiom;
+    drawLength = startLength;
+    generations = 0;
+  }
+
+  int getAge() {
+    return generations;
+  }
+  
+  void render() {
+    translate(width/2, height/2);
+    steps += 5;          
+    if (steps > production.length()) {
+      steps = production.length();
+    }
+    for (int i = 0; i < steps; i++) {
+      char step = production.charAt(i);
+      if (step == 'F') {
+        rect(0, 0, -drawLength, -drawLength);
+        noFill();
+        translate(0, -drawLength);
+      } 
+      else if (step == '+') {
+        rotate(theta);
+      } 
+      else if (step == '-') {
+        rotate(-theta);
+      } 
+      else if (step == '[') {
+        pushMatrix();
+      } 
+      else if (step == ']') {
+        popMatrix();            
+      }
+    }
+  }
+  
+  void simulate(int gen) {
+    while (getAge() < gen) {
+      production = iterate(production, rule);
+    }
+  }
+
+  String iterate(String prod_, String rule_) {
+    drawLength = drawLength * 0.6;
+    generations++;
+    String newProduction = prod_;          
+    newProduction = newProduction.replaceAll("F", rule_);
+    return newProduction;
+  }
+}
+

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Fractals and L-Systems/Pentigree/Pentigree.pde

@@ -0,0 +1,21 @@
+/** 
+ * Pentigree L-System 
+ * by Geraldine Sarmiento. 
+ * 
+ * This code was based on Patrick Dwyer's L-System class. 
+ */
+ 
+
+PentigreeLSystem ps;
+
+void setup() {
+  size(640, 360);
+  ps = new PentigreeLSystem();
+  ps.simulate(3);
+}
+
+void draw() {
+  background(0);
+  ps.render();
+}
+

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Fractals and L-Systems/Pentigree/PentigreeLSystem.pde

@@ -0,0 +1,71 @@
+class PentigreeLSystem extends LSystem {
+
+  int steps = 0;
+  float somestep = 0.1;
+  float xoff = 0.01;
+
+  PentigreeLSystem() {
+    axiom = "F-F-F-F-F";
+    rule = "F-F++F+F-F-F";
+    startLength = 60.0;
+    theta = radians(72);  
+    reset();
+  }
+
+  void useRule(String r_) {
+    rule = r_;
+  }
+
+  void useAxiom(String a_) {
+    axiom = a_;
+  }
+
+  void useLength(float l_) {
+    startLength = l_;
+  }
+
+  void useTheta(float t_) {
+    theta = radians(t_);
+  }
+
+  void reset() {
+    production = axiom;
+    drawLength = startLength;
+    generations = 0;
+  }
+
+  int getAge() {
+    return generations;
+  }
+
+  void render() {
+    translate(width/4, height/2);
+    steps += 3;          
+    if (steps > production.length()) {
+      steps = production.length();
+    }
+
+    for (int i = 0; i < steps; i++) {
+      char step = production.charAt(i);
+      if (step == 'F') {
+        noFill();
+        stroke(255);
+        line(0, 0, 0, -drawLength);
+        translate(0, -drawLength);
+      } 
+      else if (step == '+') {
+        rotate(theta);
+      } 
+      else if (step == '-') {
+        rotate(-theta);
+      } 
+      else if (step == '[') {
+        pushMatrix();
+      } 
+      else if (step == ']') {
+        popMatrix();
+      }
+    }
+  }
+
+}