我正在试验以下代码：
//3D Spectrogram with Microphone Input
//Modified by kylejanzen 2011 - https://kylejanzen.wordpress.com
//Based on script written by John Locke 2011 - http://gracefulspoon.com
//Output .DXF file at any time by pressing "r" on the keyboard
import processing.dxf.*;
import ddf.minim.analysis.*;
import ddf.minim.*;
import peasy.*;
PeasyCam cam;
FFT fftLin;
FFT fftLog;
Waveform audio3D;
Minim minim;
AudioInput microphone;
boolean record;
PFont font;
float camzoom;
float maxX = 0;float maxY = 0;float maxZ = 0;
float minX = 0;float minY = 0;float minZ = 0; …