p5.js | nfp() Function

The nfp() function in p5.js is used to format the input numbers (integers or floats) into strings as well as it gives positive (+) and negative (-) sign according to the sign of input numbers.

Syntax:

nfp(Num, Left, Right)

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

  • Num: This is the input positive number or an array of numbers which are to be formatted.
  • Left: This is the positive number which says the number of digits should be on the left side of the decimal point.
  • Right: This is the positive number which says the number of digits should be on the right side of the decimal point.

Return Value: It returns the formatted string.

Below programs illustrate the nfp() function in p5.js:



Example 1: This example uses nfp() function to format the input numbers.

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function setup() { 
   
    // Creating Canvas size
    createCanvas(450, 200); 
  
function draw() { 
       
    // Set the background color 
    background(220); 
     
    // Initializing the Numbers
    let num1 = 345; 
    let num2 = -12.3; 
    let num3 = .5; 
    let num4 = .05; 
    let num5 = 0; 
    let num6 = -0.7; 
      
    // Calling to nfp() function.
    let A = nfp(num1, 4, 3);
    let B = nfp(num2, 4, 2);
    let C = nfp(num3, 5, 3);
    let D = nfp(num4, 2, 3);
    let E = nfp(num5, 2, 2);
    let F = nfp(num6, 4, 3);
      
    // Set the size of text 
    textSize(16); 
       
    // Set the text color 
    fill(color('red')); 
     
    // Getting formatted String
    text("Formatted String is: " + A, 50, 30);
    text("Formatted String is: " + B, 50, 60);
    text("Formatted String is: " + C, 50, 90);
    text("Formatted String is: " + D, 50, 110);
    text("Formatted String is: " + E, 50, 140);
    text("Formatted String is: " + F, 50, 170);

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Output:

Example 2: This example uses nfp() function to format the input numbers.

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function setup() { 
   
    // Creating Canvas size
    createCanvas(450, 90); 
  
function draw() { 
       
    // Set the background color 
    background(220); 
     
    // Initializing the array of numbers
    let num1 = [-345, 0, 2]; 
    let num2 = [-12.3, .4, -2.0]; 
      
    // Calling to nfp() function.
    let A = nfp(num1, 4, 3);
    let B = nfp(num2, 4, 2);
      
    // Set the size of text 
    textSize(16); 
       
    // Set the text color 
    fill(color('red')); 
     
    // Getting formatted String
    text("Formatted String is: " + A, 50, 30);
    text("Formatted String is: " + B, 50, 60);

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Output:

Reference: https://p5js.org/reference/#/p5/nfp



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