# p5.js | rect() Function

• Difficulty Level : Medium
• Last Updated : 23 Aug, 2021

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:

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`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

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