The red() function in p5.js is used to extract the red value from a color or pixel array.
Syntax:
red(c)
Parameters: This function accepts single parameter c which stores the p5.Color object, color components, or CSS color.
Below programs illustrates the red() function in p5.js:
Example 1: This example uses red() function to extract the red value from the pixel array.
function setup() { // Create Canvas of size 300*80 createCanvas(300, 80); } function draw() { // Set background color background(220); // Initialize the parameter let c = color(67, 126, 255, 102); // Extract the red value let y = red(c); // Set the font size textSize(16); // Set the font color fill(color('red')); // Display result text("Red Value is : " + y, 50, 30); } |
Output:
Example 2: This example uses red() function to extract the red value from the pixel array and used as fill color.
function setup() { // Create Canvas of size 300*180 createCanvas(160, 180); } function draw() { // Set background color background(220); // Initialize the parameter let c = color(80, 126, 100, 34); // Sets 'value' to 80 let value = red(c); // Fill the color fill(value, 0, 0); // Create rectangle rect(50, 15, 35, 70); // Display result text("Value of red is : " + value, 22, 110); } |
Output:
Reference: https://p5js.org/reference/#/p5/red
Whether you’re preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, neveropen Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we’ve already empowered, and we’re here to do the same for you. Don’t miss out – check it out now!
