p5.js Constants HALF_PI

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The HALF_PI is a mathematical constant and its value is 1.57079632679489661923. The HALF_PI is the half ratio of the circumference of a circle to its diameter.

Syntax:

HALF_PI

Below program illustrates the usage of HALF_PI in p5.js:

Example:

function setup() { 
  
    // Create Canvas of size 300*200 
    createCanvas(300, 200); 
} 
  
function draw() { 
      
    // Set the background Color 
    background(220); 
      
    // Set the stroke color 
    stroke(255, 204, 0); 
      
    // Set the stroke weight 
    strokeWeight(4); 
      
    // Use of constant HALF_PI 
    arc(50, 50, 280, 280, 0, HALF_PI/2);  
      
    noStroke(); 
      
    // Set the font size 
    textSize(20); 
      
    // Display result 
    text("Value of HALF_PI is "
            + HALF_PI, 30, 180); 
} 

Output:

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

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