My uni project is to create some music visualizations using processing, which is going well. Until now.
If I run my 2D sketches in P3D they cause the sketch to crash (outside of the PDE).
Strangely this is only happening when I hit 'esc'



An example of my code:

//graph
void graph()
{
  if (isPlaying) //if music is "playing" and not paused
  {
    lastPosition = player.position()/1000; //remember position
    colorMode(RGB); //set color mode
   
    //set up FFT and drawing modes
    fftLog.forward(player.mix);
   
    smooth(); //for smooth drawing
    noStroke();
    colorMode(HSB, 100);
    rectMode(CORNER);
   
    for(int i = 0; i < fftLog.avgSize(); i++)
    {        
      if(i < fftLog.avgSize() - 29)
      {
        background(0); //refresh screen
      } 
      float amp = sqrt(sqrt(fftLog.getAvg(i)))*150; //set amp according to fft
      float h = i * 100/fftLog.avgSize() + 20; //set colour according to band (add 20 to shift colours over)
      h = 100 - h;    //reverse colour spectrum, blues for bass, reds for treble.
      float s = 80;   //saturation of colour
      float b = amp/3 * 100; //for fading of drawings
      float alp = 90; //opacity
     
      fill(color(h,s,b,alp)); //set colours according to band and amp
      stroke(color(h,s,b,alp)); //set colours according to band and amp
     
      float x = canvasW/30 * i + 30; //set location to draw according to band
      float y = canvasH - amp-60; //set drawing height according to amp and canvas size
      int z = 10;
      //change drawing mode for fft drawings
      rectMode(CENTER);
      ellipseMode(CENTER);
      //draw
      if (rectOn == true && lineGrOn == false) //user choice of rec or elip or line
      {
        translate(x,y,10);
        box(sizew, sizeh, z);
        translate(-x,-y,-10);
      }
      else if (rectOn == false && lineGrOn == false)
      {
        sphereDetail(25);
        translate(x,y,10);
        sphere(sizew/2);
        translate(-x,-y,-10);
      }
       
      else if (rectOn == false && lineGrOn == true)
        line(x-sizew/2,y,z,x+sizew/2,y,z);
    }//for
  }
}//graph

if I run the sketch and default to the box or sphere method, it works fine, but as soon as I default or switch to the line method and hit 'esc' it crashes.

I have another sketch which involves drawing fireworks which acts the same way.

here's my stop():

//stop
void stop() //stop function
{
  if (hasOpened == true && !cancelled)
  {
    player.close(); //must stop player and minim before close
    minim.stop();
  }
  super.stop();
}//stop



Any ideas on where this bug is would be great.

Thanks in advance to anyone who finds the time to help with this.

Joni