processing实现圆形频谱图

帮基友做的作业里的一部分，写完以后她说用不到这个就发出来了（）
大概就是监听了一下麦克风然后转角度，写的很傻
有参考openprocessing上的代码
对没错搜到的所有代码都是p5.js(……) java模式表示死亡xxx

import ddf.minim.*;
import ddf.minim.analysis.*;

Minim minim;
AudioInput in;
FFT fft;

int h,m,s;
float[] fftReal;
void setup() {
  //窗口大小
  size(800, 600);
  minim = new Minim(this);
  in = minim.getLineIn();
  //FFT(int timeSize, float sampleRate) 
  //通过一个timeSize大小并且采样速率为sampleRate的缓冲区构造FFT 
  fft = new FFT(in.bufferSize(), in.sampleRate());
}
void draw(){
  background(0);
  fft.forward(in.mix);
  //时钟的部分
  //显示时间
  //textFont(createFont("Helvetica", 65));
  textFont(createFont("lcdD", 65));
  textAlign(CENTER);
  fill(255);
  h=hour();
  m=minute();
  s=second();
  if(m<10 && s<10){text(h+":"+"0"+m+":"+"0"+s,width/2,height/2+100/3-3);}
  else if(m<10 && s>=10){text(h+":"+"0"+m+":"+s,width/2,height/2+100/3-3);}
  else if(m>=10 && s<10){text(h+":"+m+":"+"0"+s,width/2,height/2+100/3-3);}
  else if(m>=10 && s>=10){text(h+":"+m+":"+s,width/2,height/2+100/3-3);}
  textAlign(LEFT);
  textFont(createFont("Helvetica", 11));

  //显示圆形频谱
  fftReal = fft.getSpectrumReal();
  //fftImag = fft.getSpectrumImaginary();
  float ang=0;
  float angle=PI/40;
  int circRad = 180;
  int circThick = 5;
  int maxSpectrum = 80;
  for(int i = 0; i < maxSpectrum; i+=1) {
    float dist = fftReal[i];
    //float dist2 = fftReal[i+1];
    stroke(fftReal[i], 125, 186);
    //stroke(255, 236, 149);
    strokeWeight(3);
    line(width/2 - cos(ang)*(circRad+dist+circThick), height/2 + sin(ang)*(circRad+dist+circThick), width/2 - cos(ang)*(circRad-dist-circThick), height/2 + sin(ang)*(circRad-dist-circThick));
    //line(width/2 - cos(ang)*(circRad+dist+circThick), height/2 + sin(ang)*(circRad+dist+circThick), width/2 - cos(ang+angle)*(circRad+dist2+circThick), height/2 + sin(ang+angle)*(circRad+dist2+circThick));
    //line(width/2 - cos(ang)*(circRad-dist-circThick), height/2 + sin(ang)*(circRad-dist-circThick), width/2 - cos(ang+angle)*(circRad-dist2-circThick), height/2 + sin(ang+angle)*(circRad-dist2-circThick));
    ang+=angle;  
  }  
  strokeWeight(1);
}

……并没有背景，因为懒直接截了作业的图（