p5.js | setBlue() Function
The setBlue() function in p5.js is used to set the blue color value in RGB color mode. It sets the third value of RGB format.
Syntax:
setBlue(blue)
Parameters: The function accepts single parameter as mentioned above and described below:
- blue: This parameter stores the new blue value.
Below programs illustrate the setBlue() function in p5.js:
Example-1: This example uses setBlue() 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(13, 40, 0); } function draw() { // Create Canvas of a given size createCanvas(500, 500); // Use of setBlue function backgroundColor.setBlue( 0 + 128 * cos(millis() / 1000)); /* Pass the initialised variable to background function*/ background(backgroundColor); // Set text size textSize(30); // Set text color fill("white"); // set text text("w3wiki", 125, 125); } |
Output:
Example 2: This example uses setBlue() 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 setBlue function and initialise it to maximum*/ backgroundColor.setBlue(255); /* Pass the initialised variable to background function*/ background(backgroundColor); // Set text size textSize(30); // Set text color fill("white"); // set text text("w3wiki\n ", 135, 125); text( "A Computer Science Portal For Beginner" , 10, 155); } |
Output:
Reference:https://p5js.org/reference/#/p5.Color/setBlue
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