The hue() function in p5.js is used to extract the HSB and HSL hue value from a color or pixel array.
Syntax:
hue(c)
Parameters: This function accepts single parameter c which stores the p5.Color object, color components, or CSS color.
Below programs illustrate the hue() function in p5.js:
Example 1: This example uses hue() function to extract the HSB and HSL hue value from a color or pixel array.
function setup() {
// Create Canvas of size 300*80
createCanvas(300, 80);
} function draw() {
// Set background color
background(220);
// Initialize color mode to HSB
colorMode(HSB, 255);
// Initialize the parameter
let c = color(0, 126, 100);
// Sets 'value' to 0
let value = hue(c);
// Set font size
textSize(16);
// Set font color
fill(color( 'red' ));
// Display result
text( "Hue Value is : " + value, 50, 30);
} |
Output:
Example 2: This example uses hue() function to extract the HSB and HSL hue value from a color and fill color value as grayscale integer value.
function setup() {
// Create Canvas of size 300*180
createCanvas(300, 180);
} function draw() {
// Set background color
background(220);
// Initialize color mode to HSB
colorMode(HSB, 255);
// Initialize the parameter
let c = color(56, 126, 10);
// Sets 'value' to 56
let value = hue(c);
// Fill the hue value as grayscale
fill(value);
// Create rectangle
rect(50, 15, 35, 70);
// Display result
text( "Value of Hue is : " + value, 22, 110);
} |
Output:
Reference: https://p5js.org/reference/#/p5/hue