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p5.js | rect() Function
  • Difficulty Level : Medium
  • Last Updated : 17 Jan, 2020

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 descibed 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:






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:




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:




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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