处理中基于时间的事件 [英] Timing based events in Processing

问题描述

我想创建一个音乐可视化器，并为此创建一个数组，该数组可以按音乐中出现的顺序保护指令.然后，我想构建一个函数，以设定的速度解析数组并执行指令.

I want to create a music visualizer, and to do this I want to build an array which safes instructions in order of occurrence in the music. I then want to build a function that parses through the array at a set speed and performs the instructions.

因此，例如，我有一个包含{a，b，a，b，a}的数组，并且对于每一个a，屏幕都会变成红色，而对于每b，屏幕都会变成黑色.

So for example I have an array with {a,b,a,b,a} and for every a the screen turns red for every b the screen turns black.

我尝试使用Threads和sleep()函数，但不会再次唤醒.坦白地说，我对下一步的工作一无所知.

I tried using Threads and the sleep() function but it wouldn't wake up again. I'm frankly at a loss as to what to do next.

推荐答案

您可以使用 modulo 运算符以及 frameCount 变量每隔 X 帧做某事.

You could use the modulo operator along with the frameCount variable to do something every X frames.

下面是一个小示例，它每 60 帧或每秒一次更改背景:

Here's a little example that changes the background every 60 frames, or once per second:

void draw() {
  if (frameCount % 60 == 0) {
    background(random(255), random(255), random(255));
  }
}

这使用硬编码的 60 每秒更改一次背景，但是您可以从数组中获取该数字.

This uses hard-coded 60 to change the background once per second, but you could get that number from an array instead.

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