p5.js displayDensity()用法及代碼示例

function setup() { 
      
    // Create canvas of given size 
    createCanvas(windowWidth, windowHeight); 
    
    // Call the displayDensity function 
    let density = displayDensity();  
    pixelDensity(density); 
} 
   
function draw() { 
  
    // Set the background color 
    background(0, 200, 0); 
      
    // Set text color 
    color("green"); 
      
    // Set font size 
    textSize(30); 
      
    // Set text alignment 
    textAlign(CENTER); 
      
    // Set text to be add 
    text("GeeksForGeeks!", windowWidth/2, windowHeight/2); 
      
    // Display pixelDensity on the screen 
    text("PixelDensity is " + pixelDensity(),  
            windowWidth/2, windowHeight/2+40); 
}