p5.js 加速X 变量
加速度X系统变量 负责设备(平板电脑或手机)沿 x 轴的加速。它可以与 draw()函数一起使用,以在坐标的 x 轴上加速设备。
它的值表示为米每秒平方。
句法:
accelerationX
示例 1:
Javascript
// Move a touchscreen device to register
// Acceleration changes.
function setup()
{
createCanvas(400,400)
}
function draw() {
background(0, 50);
fill('green');
textAlign(CENTER,CENTER);
textSize(50);
// Convert the acceleration into integer when
// device is moved along x axis.
text(int(accelerationX),windowWidth/2,windowHeight/2);
}
Javascript
// Move a touchscreen device to register
// Acceleration changes.
function draw() {
createCanvas(400,400);
background(220);
fill('green');
// Set the variable.
ellipse(width / 4, height / 4, accelerationX);
}
输出:
示例 2:
Javascript
// Move a touchscreen device to register
// Acceleration changes.
function draw() {
createCanvas(400,400);
background(220);
fill('green');
// Set the variable.
ellipse(width / 4, height / 4, accelerationX);
}
输出: