s-estay

var sketch = function(p){

  p.setup = function(){
    p.createCanvas(p.windowWidth*0.8, 100);
  }

  p.draw = function(){
    p.background(0);
  }

s-estay

<script src = "{{site.baseurl}}/assets/js/instance-mode-example-one.js"></script>
<script src = "{{site.baseurl}}/assets/js/instance-mode-example-two.js"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/p5.min.js"></script>

<div class = "p5js-script-div" id = "script-1"></div>
<div class = "p5js-script-div" id = "script-2"></div>

s-estay

//instance mode
//map and random functions

var sketch = function(p){
  var bcol = 0;

  //objects
  //in c++ this would be a struct
  var spot = {
    x : 100,

s-estay

let bubble1, bubble2; //global variables

function setup(){
  createCanvas(640, 200);
  bubble1 = new Bubble(320, 50, 20, 'red', 2); //start at the center of the canvas
  bubble2 = new Bubble(160, 50, 10, 'blue', 1); //new bubble2 to the left of bubble1
  //print(bubble.x, bubble.y);
}

function draw(){

s-estay

//instance mode

//template for creating a p5 sketch (kind of)
var sketch = function(p){
  //RGB rainbow colors
  p.rainbowR = [248, 255, 255, 254, 208, 105, 18, 68, 59];
  p.rainbowG = [12, 51, 102, 174, 195, 208, 189, 68, 12];
  p.rainbowB = [18, 17, 68, 45, 16, 37, 185, 221, 189];

  var i;

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//RGB rainbow colors
var rainbowR = [248, 255, 255, 254, 208, 105, 18, 68, 59];
var rainbowG = [12, 51, 102, 174, 195, 208, 189, 68, 12];
var rainbowB = [18, 17, 68, 45, 16, 37, 185, 221, 189];

var i;
var canvas;
var t = rainbowR.length;

function setup() {

s-estay

<script src = "https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.0/p5.min.js"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.0/addons/p5.dom.min.js"></script>

<div id = "script-holder">
  <script src = "{{site.baseurl}}/js/this-is-a-test.js"></script>
</div>

s-estay

// PWM signal through pin 3
// what's a PWM signal? read here: https://en.wikipedia.org/wiki/Pulse-width_modulation
// 8 bits PWM: 0 (0% or GND) to 255 (100% or VCC)
// PWM signal is controlled by a potentiometer connected to pin A2
// the potentiometer have 3 leads: 1 (or 3) connects to GND, 2 to A2 and 3 (or 1) to VCC
// the potentiometer input signal is an analog signal
// the microcontroller converts this analog signal into digital using a 10 bits ADC
// ADC: analog to digital converter
// a 10 bits ADC signal ranges between 0 - 1023
// the ADC signal is equivalent to the input analog voltage where 0 is GND and 1023 is VCC (5V)

s-estay

// PWM signal through pin 3
// 8 bits PWM: 0 (0% or GND) to 255 (100% or VCC)
// what's a PWM signal? read here: https://en.wikipedia.org/wiki/Pulse-width_modulation
// pin 3 will source current to the LED
// refer to source_current.ino file to see how to connect the LED
// code executed on Arduino Leonardo

void setup(){
  pinMode(3, OUTPUT); // observe that only pins preceded by ~ in the board can output a PWM signal
}

s-estay

// turn LED ON and OFF using switch
// we read the state of the switch through pin 7
// switch is connected between pin 7 and GND
// we use the microcontroller's internal 20k pullup resistor
// why do we use a pullup resistor? read here: https://learn.sparkfun.com/tutorials/pull-up-resistors
// you can choose between LED ON or LED OFF when switch is pressed
// pin 8 will source current to the LED
// refer to source_current.ino file to see how to connect the LED
// code executed on Arduino Leonardo