motionPressure

Just started with book today (Jan 6 , 2013), seems you are aware of this, but for other readers

motionPressure no longer support in P2b7.

This breaks many examples in Chapter 2, minor frustration so early on—especially since this is such a great resource.

Based on one of the chapter footnotes and this link -
http://wiki.processing.org/w/Android#Mouse.2C_M…

can get functionality back with mod to mousePressed() (or other mouse calls)

void mousePressed() {
  println( "pressed x: " + mouseX + " y: " + mouseY);

// add folowing lines
  MotionEvent me = (MotionEvent) mouseEvent.getNative();
  float mPres = me.getPressure();
  println (mPres);  // can do stuff with this float now -- mine ranges .4 - 3.6 -- not 0 -1

}

Ah, thanks for this, I was wondering what I had missed.

1. the import: import android.view.MotionEvent;
2. a motionPressure global var that is set in the mousePressed event.
3. use the mouseDragged event to update the motionPressure variable so that it detects changes in pressure during the drag.
   

   
   import android.view.MotionEvent;
   
   float maxPressure;
   float motionPressure;
   
   void setup()
   {
     noStroke();
     background(0);
   }
   
   void draw()
   {
     fill(motionPressure/maxPressure * 255);
   
     ellipse(mouseX, mouseY, mouseX-pmouseX, mouseY-pmouseY);
   
     println(motionPressure);
   
     if(motionPressure > maxPressure)
       maxPressure = motionPressure;
   }
   
   void mouseDragged() {
     MotionEvent me = (MotionEvent) mouseEvent.getNative();
     motionPressure = me.getPressure();
     println (motionPressure);  // can do stuff with this float now -- mine ranges .4 - 3.6 -- not 0 -1
   }
   
   

Thanks for posting this fix.
The motionPressure constant is gone for good, so we need to do it this way.
Best,
Daniel