Processing II - PowerPoint Presentation

Slide1

Processing II

Electric BoogalooSlide2

Processing Basics – Audio

Processing has a built-in audio library known as

Minim

Import it by using import ddf.minim.*, then create a Minim object (Minim minim;)There are two types of objects that Minim uses that will be focused on: AudioPlayer and AudioSample.

AudioPlayer

is used primarily for background music, while AudioSample is best used for sound effects that are triggered. Slide3

Processing Basics – Audio (cont’d)

Just like with Images, you need to load your music files to actually get them to play

First, put your music file in your project folder like you’d do for a picture

Accepted formats include .mp3, .wav, .aiff, .au, & .sndLoading files is different for whether you want to use the Player or the Sample, see the syntax belowSlide4

Processing Basics – Audio (cont’d)

Now that the files are loaded, all that’s left is to play them when desired. You can do this in either the

setup()

or the draw() functionsAudioSamples can be used as triggered sounds, like when a button is pressed like below, note that keyPressed is kept within it’s own function, not in draw() or setup()Slide5

Processing Basics – Audio (cont’d)

There are many more functions that can be used within the minim library, all can be found in the reference library on their website at:

http://code.compartmental.net/minim

/:^)Slide6

Processing Basics – Key Input

Sometimes, you want to have actions go on the press of a key instead of the click of a mouse

Processing has a very easy function:

void keyPressed(),that allows you to do just thatTo have an event occur off of an ASCII-applicable key, you can set the reserved word ‘key’ equal to a char of the letterSlide7

Processing Basics – Key Input

To do something with a “special”

key,

such as the arrow keys, you need to put an extra if statement if (key == CODED) within your keyPressed function. This will allow you to refer to the key presses by certain key words like UP, DOWN, etc.Use the processing reference library for other keyCodes:https://processing.org/reference/