p5.js Touch | touchMoved()

The touchMoved() function in p5.js is called when a touch move is registered. If no touchMoved() function is defined, the mouseDragged() function will be called instead if it is defined.

Syntax:

touchMoved([Event])

Below program illustrates the touchMoved() function in p5.js:
Example-1:

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let valueX;
let valueY;
  
function setup() {
    
    // Create Canvas of size 500*500
    createCanvas(500, 500);
}
  
function draw() {
    
    // set background color
    background(200);
    
    fill('green');
    // set text and text size
    textSize(25);
    
    text('Hold and Move to change color', 30, 30);
    // fill color according to touchStarted() 
    fill(valueX, 255 - valueY, 255 - valueX);
    
    // draw ellipse  
    ellipse(mouseX, mouseY, 115, 115);
  
}
  
function touchMoved() {
    valueX = mouseX % 255;
    valueY = mouseY % 255;
}

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Output:

Example-2:

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let valueX;
let valueY;
  
function setup() {
    
    // Create Canvas of size 500*500
    createCanvas(500, 500);
}
  
function draw() {
    // set background color
    background(200);
    
    fill('green');
    // set text and text size
    textSize(25);
    
    text('Touch and Move to change color', 30, 30);
    // fill color according to mouseMoved() 
    fill(valueX, 255 - valueY, 255 - valueX);
    
    // draw rectangle 
    rect(mouseX, mouseY, 115, 115);
    fill(valueY, 255 - valueX, 255 - valueX);
  
    rect(mouseX, mouseY + 115, 115, 115);
    fill(255 - valueY, 255 - valueX, 255 - valueY);
  
    rect(mouseX - 115, mouseY, 115, 115);
    fill(255 - valueY, 255 - valueY, 255 - valueY);
  
    rect(mouseX - 115, mouseY + 115, 115, 115);
}
  
function touchMoved() {
    valueX = mouseX % 255;
    valueY = mouseY % 255;
}

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Output:

Reference: https://p5js.org/reference/#/p5/touchMoved

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