p5.js rect() Function

The rect() function is an inbuilt function in p5.js which is used to draw the rectangle on the screen. A rectangle contains four sides and four angles. Each angle of the rectangle is 90 degree. The length of the opposite sides of rectangles are equal. 

Syntax:

rect( x, y, w, h, tl, tr, br, bl )

or 

rect( x, y, w, h, detailX, detailY ) 

Parameters: This function accepts many parameters as mentioned above and described below: 

• x: It is used to set the x-coordinate of rectangle.
• y: It is used to set the y-coordinate of rectangle.
• w: It is used to set the width of rectangle.
• h: It is used to set the height of rectangle.
• tl: It is optional parameter and used to set the radius of top-left corner.
• tr: It is optional parameter and used to set the radius of top-right corner.
• br: It is optional parameter and used to set the radius of bottom-right corner.
• bl: It is optional parameter and used to set the radius of bottom-left corner.
• detailX: It is used to set the number of segment in x-direction.
• detailY: It is used to set the number of segment in y-direction.

Example 1:

javascript

function setup() {

    // Create Canvas of given size
    createCanvas(400, 300);

}

function draw() {

    background(220);

    // Use color() function
    let c = color('green');

    // Use fill() function to fill color
    fill(c);

    // Draw a rectangle
    rect(50, 50, 300, 200);

}

Output:

Example 2:

javascript

function setup() {

    // Create Canvas of given size
    createCanvas(400, 300);

}

function draw() {

    background(220);

    // Use color() function
    let c = color('green');

    // Use fill() function to fill color
    fill(c);

    // Draw a rectangle
    rect(50, 50, 300, 200, 30);

}

Output:

Example 3:

javascript

function setup() {

    // Create Canvas of given size
    createCanvas(400, 300);

}

function draw() {

    background(220);

    // Use color() function
    let c = color('green');

    // Use fill() function to fill color
    fill(c);

    // Draw a rectangle
    rect(50, 50, 300, 200, 10, 20, 30, 40);

}

Output:

Online editor: https://editor.p5js.org/
Environment Setup: https://www.geeksforgeeks.org/p5-js-soundfile-object-installation-and-methods/
Reference: https://p5js.org/reference/#/p5/rect