thank you .

but can you give me  the example code.

i tried it doesn't work.

this is my attempt.

Error messige is nullPointer Exeption

createShape(), or this particular variation of it, is not available with this renderer.
Exception in thread "Animation Thread" java.lang.NullPointerException
 at col.setup(col.java:45)
 at processing.core.PApplet.handleDraw(PApplet.java:2117)
 at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:193)
 at processing.core.PApplet.run(PApplet.java:2020)
 at java.lang.Thread.run(Thread.java:662)

and this is  code.

1. import processing.video.*;
   import krister.Ess.*;
   FFT myfft;
   AudioInput myinput;
   int bufferSize=512;
   import processing.video.*;
2. // Size of each cell in the grid
   int cellSize = 6;
   // Number of columns and rows in our system
   int cols, rows;
   // Variable for capture device
   Capture video;
3. PShape star;
4. int status = 0;
   int ready = 0;
   int count = 0;
5. void setup() {
      star = createShape();
      star.vertex(0, -16);
      star.vertex(4, -7);
      star.vertex(11, -5);
      star.vertex(5, 2);
      star.vertex(7, 10);
      star.vertex(0, 6);
      star.vertex(-7, 10);
      star.vertex(-5, 2);
      star.vertex(-11, -5);
      star.vertex(-4, -7);
      star.end(CLOSE);
           
     // Set up columns and rows
     cols = width/2 / cellSize;
     rows = height/2 / cellSize;
     colorMode(RGB, 255, 255, 255, 70);
    // Uses the default video input, see the reference if this causes an error
     video = new Capture(this, 640, 480);
     video.start();
     frameRate(45);
     filter(BLUR,30);
     smooth();
6.     Ess.start(this); 
     myinput=new AudioInput(bufferSize);
     myfft=new FFT(bufferSize*2);
     myinput.start();
7.   myfft.damp(.1);
     myfft.equalizer(true);
     myfft.limits(.005,.01);
   }
8. 
   void draw() { 
     
     
     float percent= myfft.averages[0];
    
9.    if (video.available()) {
       video.read();
       video.loadPixels();
       
      background(0,0,0);
10.     // Begin loop for columns
        for (int i = 0; i < cols;i++) {
          // Begin loop for rows
          for (int j = 0; j < rows;j++) {
11.         // Where are we, pixel-wise?
            int x = i*cellSize + cellSize/2;
            int y = j*cellSize + cellSize/2;
            int loc = (video.width - x - 1) + y*video.width; // Reversing x to mirror the image
           
            // Each rect is colored white with a size determined by brightness
            color c = video.pixels[loc];
            float sz = ((percent)*5000/ float(width)) * brightness(video.pixels[loc]) + 80.0;
            float sy = brightness(video.pixels[loc])+20.0;
            pushMatrix();
           translate(x , y , sz);
            fill(c); 
            noStroke();   
            shape(star);
            popMatrix();
12.           
          }
        }
      }
    }
    public void audioInputData(AudioInput theInput) {
      myfft.getSpectrum(myinput);
    }
    

Thank you.

It works now.

but there is another problem.

The half of the star has a gradation, looks black.

I want to fill colors on webcam,  fill(c); does not work perfectly.

This is how it looks like:

and this is my code:

Is there a way to fix this?

Is there problem in x, y axis of star or tanslate(x, y, sz);?

2. import processing.video.*;
   import krister.Ess.*;
   FFT myfft;
   AudioInput myinput;
   int bufferSize=512;
   import processing.video.*;
3. 
   // Size of each cell in the grid
   int cellSize = 10;
   // Number of columns and rows in our system
   int cols, rows;
   // Variable for capture device
   Capture video;
   PShape star;
4. void setup() {
     size(1024,768,P3D);
      background(0, 102, 153);
   
     // Set up columns and rows
     cols = width/2 / cellSize;
     rows = height/2 / cellSize;
     colorMode(RGB, 255, 255, 255, 70);
     ellipseMode(CENTER);
    
    // Uses the default video input, see the reference if this causes an error
     video = new Capture(this, 640, 480);
     video.start();
     frameRate(45);
     filter(BLUR,30);
     smooth();
5.     Ess.start(this); 
     myinput=new AudioInput(bufferSize);
     myfft=new FFT(bufferSize*2);
     myinput.start();
6.   myfft.damp(.5);
     myfft.equalizer(true);
     myfft.limits(.005,.01);
    
     star = createShape();
     star.noStroke();
   
       star.vertex(0, -10);
     star.vertex(2.8, -4);
     star.vertex(9.6, -3);
     star.vertex(4.6, 1.4);
     star.vertex(5.8, 8);
     star.vertex(0, 5);
     star.vertex(-5.8, 8);
     star.vertex(-4.6, 1.4);
     star.vertex(-9.6, -3);
     star.vertex(-2.8, -4);
     star.end(CLOSE);
   }
7. 
   void draw() { 
    
   
     float percent= myfft.averages[0];
    
8.    if (video.available()) {
       video.read();
       video.loadPixels();
      
9.     // Begin loop for columns
       for (int i = 0; i < cols;i++) {
         // Begin loop for rows
         for (int j = 0; j < rows;j++) {
10.         // Where are we, pixel-wise?
            int x = i*cellSize + cellSize/2;
            int y = j*cellSize + cellSize/2;
            int loc = (video.width - x - 1) + y*video.width; // Reversing x to mirror the image
           
            // Each rect is colored white with a size determined by brightness
            color c = video.pixels[loc];
            float sz = ((percent)*5000/ float(width)) * brightness(video.pixels[loc]) + 80.0;
            float sy = brightness(video.pixels[loc])+20.0;
            pushMatrix();
             
            noStroke();
          shapeMode(CENTER); 
          translate(x*2 , y*2 , sy);
          shape(star); 
          star.fill(c);
11. 
        popMatrix();          
          }
        }
      }
    }
    public void audioInputData(AudioInput theInput) {
      myfft.getSpectrum(myinput);
    }