changes to simulate examples

java/examples/Topics/Simulate/SmokeParticleSystem/SmokeParticleSystem.pde

@@ -8,48 +8,42 @@
 
 // @pjs preload must be used to preload media if the program is 
 // running with Processing.js
-/* @pjs preload="texture.gif"; */  
+/* @pjs preload="texture.png"; */  
 
 ParticleSystem ps;
 Random generator;
 
 void setup() {
-  size(640, 360);
-  colorMode(RGB, 255, 255, 255, 100);
-
-  // Using a Java random number generator for Gaussian random numbers
+  size(640,360);
   generator = new Random();
-
-  // Create an alpha masked image to be applied as the particle's texture
-  PImage msk = loadImage("texture.gif");
-  PImage img = createImage(msk.width, msk.height, RGB);
-  for (int i = 0; i < img.pixels.length; i++) {
-    img.pixels[i] = color(255);
-  }
-  img.mask(msk);
-  ps = new ParticleSystem(0, new PVector(width/2, height-20), img);
-
+  PImage img = loadImage("texture.png");
+  ps = new ParticleSystem(0,new PVector(width/2,height-60),img);
+  smooth();
 }
 
 void draw() {
-  background(75);
-
+  background(0);
+  
   // Calculate a "wind" force based on mouse horizontal position
-  float dx = (mouseX - width/2) / 1000.0;
-  PVector wind = new PVector(dx,0,0);
-  displayVector(wind,width/2,50,500);
-  ps.add_force(wind);
+  float dx = map(mouseX,0,width,-0.2,0.2);
+  PVector wind = new PVector(dx,0);
+  ps.applyForce(wind);
   ps.run();
   for (int i = 0; i < 2; i++) {
     ps.addParticle();
   }
+  
+  // Draw an arrow representing the wind force
+  drawVector(wind, new PVector(width/2,50,0),500);
+
 }
 
-void displayVector(PVector v, float x, float y, float scayl) {
+// Renders a vector object 'v' as an arrow and a location 'loc'
+void drawVector(PVector v, PVector loc, float scayl) {
   pushMatrix();
   float arrowsize = 4;
   // Translate to location to render vector
-  translate(x,y);
+  translate(loc.x,loc.y);
   stroke(255);
   // Call vector heading function to get direction (note that pointing up is a heading of 0) and rotate
   rotate(v.heading2D());