Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Basics/Structure/Recursion/Recursion.pde

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+/**
+ * Recursion. 
+ * 
+ * A demonstration of recursion, which means functions call themselves. 
+ * Notice how the drawCircle() function calls itself at the end of its block. 
+ * It continues to do this until the variable "level" is equal to 1. 
+ */
+ 
+void setup() {
+  size(640, 360);
+  noStroke();
+  noLoop();
+}
+
+void draw() {
+  drawCircle(width/2, 280, 6);
+}
+
+void drawCircle(int x, int radius, int level) {                    
+  float tt = 126 * level/4.0;
+  fill(tt);
+  ellipse(x, height/2, radius*2, radius*2);      
+  if(level > 1) {
+    level = level - 1;
+    drawCircle(x - radius/2, radius/2, level);
+    drawCircle(x + radius/2, radius/2, level);
+  }
+}