java/examples/Basics/Transform/TriangleFlower/applet/TriangleFlower.java

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+import processing.core.*; 
+
+import java.applet.*; 
+import java.awt.*; 
+import java.awt.image.*; 
+import java.awt.event.*; 
+import java.io.*; 
+import java.net.*; 
+import java.text.*; 
+import java.util.*; 
+import java.util.zip.*; 
+import java.util.regex.*; 
+
+public class TriangleFlower extends PApplet {
+
+/**
+ * Triangle Flower 
+ * by Ira Greenberg. 
+ * 
+ * Using rotate() and triangle() functions generate a pretty 
+ * flower. Uncomment the line "// rotate(rot+=radians(spin));"
+ * in the triBlur() function for a nice variation.
+ */
+
+Point[]p = new Point[3];
+float shift = 1.0f;
+float fade = 0;
+float fillCol = 0;
+float rot = 0;
+float spin = 0;
+
+public void setup(){
+  size(200, 200);
+  background(0);
+  smooth();
+  fade = 255.0f/(width/2.0f/shift);
+  spin = 360.0f/(width/2.0f/shift);
+  p[0] = new Point(-width/2, height/2);
+  p[1] = new Point(width/2, height/2);
+  p[2] = new Point(0, -height/2);
+  noStroke();
+  translate(width/2, height/2);
+  triBlur();
+}
+
+public void triBlur(){
+  fill(fillCol);
+  fillCol+=fade;
+  rotate(spin);
+  // another interesting variation: uncomment the line below 
+  // rotate(rot+=radians(spin));
+  triangle(p[0].x+=shift, p[0].y-=shift/2, p[1].x-=shift, p[1].y-=shift/2, p[2].x, p[2].y+=shift); 
+  if(p[0].x<0){
+    // recursive call
+    triBlur();
+  }
+}
+
+
+  static public void main(String args[]) {
+    PApplet.main(new String[] { "TriangleFlower" });
+  }
+}