处理 - 根据 mousePressed 播放不同的音频答案

【问题标题】：Processing - playing different audio depending on mousePressed处理 - 根据 mousePressed 播放不同的音频
【发布时间】：2016-11-25 18:34:11
【问题描述】：

我正在尝试根据单击我的Processing 草图的哪个“区域”来播放不同的音频文件。我在使用 soundFile 时遇到问题，即使在单击第一个区域时只能播放一个文件。

我已经导入了sound library，但一定有语法或目录错误。这是我不断收到的信息：

Error: Soundfile doesn't exist. Pleae check path
Could not run the sketch (Target VM failed to initialize).
For more information, read revisions.txt and Help → Troubleshooting.

首先，是否可以加载5个不同的声音文件作为if语句的条件？

代码在这里：

PImage img;  // Declare variable "a" of type PImage    
import processing.sound.*;
    SoundFile file;


void setup() {
  size(1475, 995);
  // The image file must be in the data folder of the current sketch 
  // to load successfully
  img = loadImage("PaceTaker.jpg");  // Load the image into the program
}

void draw() {
  // Displays the image at its actual size at point (0,0)
  image(img, 0, 0);
}
void mousePressed() {
  if (mouseX>105 && mouseX<337 && mouseY>696 && mouseY<714) {
     // Load a soundfile from the /data folder of the sketch and play it back
    file = new SoundFile(this, "Heartbeatreg.mp3");
    file.play();
    stroke(0);
  } 
  else if (mouseX>410 && mouseX<584 && mouseY>696 && mouseY<714) {
    println("yikes2");
    stroke(0);
  }
  else if (mouseX>659 && mouseX<837 && mouseY>696 && mouseY<714) {
    println("yikes3");
    stroke(0);
  }
  else if (mouseX>928 && mouseX<1065 && mouseY>696 && mouseY<714) {
    println("yikes4");
    stroke(0);
  }
  else if (mouseX>1123 && mouseX<1397 && mouseY>696 && mouseY<714) {
    println("yikes5");
    stroke(0);
  }
   else {
    println("hello");
  }
}

【问题讨论】：

标签： java if-statement audio processing

【解决方案1】：

用minim 解决了这个问题。代码如下：

PImage img;  // Declare variable "a" of type PImage
import ddf.minim.*;
AudioPlayer player;
Minim minim;

void setup() {
  size(1475, 995);
  // The image file must be in the data folder of the current sketch 
  // to load successfully
  img = loadImage("PaceTaker.jpg");  // Load the image into the program
  minim = new Minim(this);
  player = minim.loadFile("Heartbeatreg.mp3");
}

void draw() {
  // Displays the image at its actual size at point (0,0)
  image(img, 0, 0);
}
void mousePressed() {
  if (mouseX>105 && mouseX<337 && mouseY>696 && mouseY<714){
    if (player.isPlaying()) {
      player.close();}
   player = minim.loadFile("Heartbeatreg.mp3");
   player.play();
    stroke(0);
  } 
  else if (mouseX>410 && mouseX<584 && mouseY>696 && mouseY<714) {
    if (player.isPlaying()) {
      player.close();}
    player = minim.loadFile("Heartbeatflatline.mp3");
    player.play();
    stroke(0);
  }
  else if (mouseX>659 && mouseX<837 && mouseY>696 && mouseY<714) {
    if (player.isPlaying()) {
      player.close();}
    player = minim.loadFile("Heartbeatsuperfast.mp3");
    player.play();
    stroke(0);
  }
  else if (mouseX>928 && mouseX<1065 && mouseY>696 && mouseY<714) {
    if (player.isPlaying()) {
      player.close();}
    player = minim.loadFile("Heartbeatslow.mp3");
    player.play();
    stroke(0);
  }
  else if (mouseX>1123 && mouseX<1397 && mouseY>696 && mouseY<714) {
    if (player.isPlaying()) {
      player.close();}
    player = minim.loadFile("Heartbeatfast.mp3");
    player.play();
    stroke(0);
  }
   else {
    println("void click");
  }
}

【讨论】：

【解决方案2】：

你真的不应该像那样加载mousePressed() 中的文件。相反，将它们全部加载到setup() 中，然后在需要时引用它们。这是一个例子：

Minim minim;
AudioPlayer songOne;
AudioPlayer songTwo;

void setup() {
  size(1475, 995);
  minim = new Minim(this);
  songOne = minim.loadFile("SongOne.mp3");
  songTwo = minim.loadFile("SongTwo.mp3");
}

void draw() {
}

void mousePressed() {
  if (mouseX < width/2) {
    songOne.rewind();
    songOne.play();
  } 
  else {
    songTwo.rewind();
    songTwo.play();
  }
}

【讨论】：