p5.js deviceMoved()用法及代碼示例

// Set value to zero
let value = 0;
  
// Set the draw function
function draw() {
  
    // When the device is moved
    // in the all direction then
    // the colour fill filled
    fill(value);
  
    // Set the shape of thr Graphics
    triangle(45, 100, 54, 5, 100, 100);
}
  
// Apply the deviceMoved function
function deviceMoved() {
  
    // Increment the value everytime by 10
    value = value + 10;
  
    // If the value become grater than 255
    // then reset the value to zero.
    if (value > 255) {
        value = 0;
    }
}

// Set the variable as 0
var value = 0;
  
// Set the function
function setup() {
    createCanvas(windowWidth, windowHeight);
  
    // Set the background as value which
    // will be dynamic
    background(value);
}
  
// Set the draw function
function draw() {
  
    // Set the properties of text
    background(value);
    fill(0, 0, 255);
    textAlign(CENTER, CENTER);
    textSize(25);
  
    // Set the limit for value
    value = constrain(value - 2, 0, 200)
  
    // If the value is greater than 10
    if (value > 10) {
        text("Moving Device", width / 2, height / 2);
    } else {
        text("Device is Relaxed ", width / 2, height / 2);
    }
}
  
function deviceMoved() {
  
    // Now increase the value.
    value = constrain(value + 5, 0, 255)
}