Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Create Shapes/WigglePShape/WigglePShape.pde

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+/**
+ * WigglePShape. 
+ * 
+ * How to move the individual vertices of a PShape
+ */
+
+
+// A "Wiggler" object
+Wiggler w;
+
+void setup() {
+  size(640, 360, P2D);
+  w = new Wiggler();
+}
+
+void draw() {
+  background(255);
+  w.display();
+  w.wiggle();
+}
+
+

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Create Shapes/WigglePShape/Wiggler.pde

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+// An object that wraps the PShape
+
+class Wiggler {
+  
+  // The PShape to be "wiggled"
+  PShape s;
+  // Its location
+  float x, y;
+  
+  // For 2D Perlin noise
+  float yoff = 0;
+  
+  // We are using an ArrayList to keep a duplicate copy
+  // of vertices original locations.
+  ArrayList<PVector> original;
+
+  Wiggler() {
+    x = width/2;
+    y = height/2; 
+
+    // The "original" locations of the vertices make up a circle
+    original = new ArrayList<PVector>();
+    for (float a = 0; a < TWO_PI; a+=0.2) {
+      PVector v = PVector.fromAngle(a);
+      v.mult(100);
+      original.add(v);
+    }
+    
+    // Now make the PShape with those vertices
+    s = createShape();
+    s.beginShape();
+    s.fill(127);
+    s.stroke(0);
+    s.strokeWeight(2);
+    for (PVector v : original) {
+      s.vertex(v.x, v.y);
+    }
+    s.endShape(CLOSE);
+  }
+
+  void wiggle() {
+    float xoff = 0;
+    // Apply an offset to each vertex
+    for (int i = 0; i < s.getVertexCount(); i++) {
+      // Calculate a new vertex location based on noise around "original" location
+      PVector pos = original.get(i);
+      float a = TWO_PI*noise(xoff,yoff);
+      PVector r = PVector.fromAngle(a);
+      r.mult(4);
+      r.add(pos);
+      // Set the location of each vertex to the new one
+      s.setVertex(i, r.x, r.y);
+      // increment perlin noise x value
+      xoff+= 0.5;
+    }
+    // Increment perlin noise y value
+    yoff += 0.02;
+  }
+
+  void display() {
+    pushMatrix();
+    translate(x, y);
+    shape(s);
+    popMatrix();
+  }
+}
+