Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Create Shapes/PolygonPShapeOOP2/Polygon.pde

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+// A class to describe a Polygon (with a PShape)
+
+class Polygon {
+  // The PShape object
+  PShape s;
+  // The location where we will draw the shape
+  float x, y;
+  // Variable for simple motion
+  float speed;
+
+  Polygon(PShape s_) {
+    x = random(width);
+    y = random(-500, -100); 
+    s = s_;
+    speed = random(2, 6);
+  }
+  
+  // Simple motion
+  void move() {
+    y += speed;
+    if (y > height+100) {
+      y = -100;
+    }
+  }
+  
+  // Draw the object
+  void display() {
+    pushMatrix();
+    translate(x, y);
+    shape(s);
+    popMatrix();
+  }
+}
+

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Create Shapes/PolygonPShapeOOP2/PolygonPShapeOOP2.pde

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+/**
+ * PolygonPShapeOOP. 
+ * 
+ * Wrapping a PShape inside a custom class 
+ * and demonstrating how we can have a multiple objects each
+ * using the same PShape.
+ */
+
+
+// A list of objects
+ArrayList<Polygon> polygons;
+
+void setup() {
+  size(640, 360, P2D);
+
+  // Make a PShape
+  PShape star = createShape();
+  star.beginShape();
+  star.noStroke();
+  star.fill(0, 127);
+  star.vertex(0, -50);
+  star.vertex(14, -20);
+  star.vertex(47, -15);
+  star.vertex(23, 7);
+  star.vertex(29, 40);
+  star.vertex(0, 25);
+  star.vertex(-29, 40);
+  star.vertex(-23, 7);
+  star.vertex(-47, -15);
+  star.vertex(-14, -20);
+  star.endShape(CLOSE);
+  
+  // Make an ArrayList
+  polygons = new ArrayList<Polygon>();
+  
+  // Add a bunch of objects to the ArrayList
+  // Pass in reference to the PShape
+  // We coud make polygons with different PShapes
+  for (int i = 0; i < 25; i++) {
+    polygons.add(new Polygon(star));
+  }
+}
+
+void draw() {
+  background(255);
+
+  // Display and move them all
+  for (Polygon poly : polygons) {
+    poly.display();
+    poly.move();
+  }
+}
+