The setRed() function in p5.js is used to set the red color value in RGB color mode. It sets the first value of RGB format.
Syntax:
setRed(red)
Parameters: The function accepts single parameter as mentioned above and described below:
- red: This parameter stores the new red value.
Below programs illustrate the setRed() function in p5.js:
Example- 1: This example uses setRed() function to set red value of RGB color format.
/* declare a variable to store the value of color*/
let backgroundColor; function setup() {
/* initialise the variable
with RGB color format*/
backgroundColor = color(0, 50, 150);
} function draw() {
// Create Canvas of a given size
createCanvas(500, 500);
// Use of setRed function
backgroundColor.setRed(
0 + 128 * cos(millis() / 1000));
/* Pass the initialized
variable to background function*/
background(backgroundColor);
// Set text size
textSize(30);
// Set text color
fill( "white" );
// set text
text( "GeeksForGeeks" , 125, 125);
} |
Output:
Example-2: This example uses setRed() function to set red value of RGB color format.
/* declare a variable to store the value of color*/ let backgroundColor; function setup() {
/* initialise the variable
with RGB color format*/
backgroundColor = color(0, 0, 0);
} function draw() {
// Create Canvas of a given size
createCanvas(540, 500);
/* Use of setRed function
and initialise it to maximum*/
backgroundColor.setRed(255);
/* Pass the initialised
variable to background function*/
background(backgroundColor);
// Set text size
textSize(30);
// Set text color
fill( "white" );
// set text
text( "GeeksForGeeks\n " , 135, 125);
text(
"A Computer Science Portal For Geeks" ,
10, 155);
} |
Output:
Reference:https://p5js.org/reference/#/p5.Color/setRed